./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.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_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/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_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/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_ae1f9ac5-c803-4330-bd61-0645119bc4ff/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 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 ............................................................................................................................................................................................................................................................................................................................ 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_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/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_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/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_ae1f9ac5-c803-4330-bd61-0645119bc4ff/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 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:29:00,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:29:00,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:29:00,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:29:00,917 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:29:00,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:29:00,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:29:00,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:29:00,932 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:29:00,939 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:29:00,941 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:29:00,942 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:29:00,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:29:00,946 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:29:00,948 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:29:00,950 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:29:00,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:29:00,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:29:00,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:29:00,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:29:00,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:29:00,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:29:00,972 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:29:00,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:29:00,979 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:29:00,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:29:00,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:29:00,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:29:00,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:29:00,985 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:29:00,986 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:29:00,987 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:29:00,989 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:29:00,990 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:29:00,991 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:29:00,992 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:29:00,992 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:29:00,993 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:29:00,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:29:00,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:29:00,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:29:00,995 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:29:01,040 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:29:01,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:29:01,044 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:29:01,044 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:29:01,044 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:29:01,044 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:29:01,045 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:29:01,045 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:29:01,054 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:29:01,054 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:29:01,056 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:29:01,056 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:29:01,056 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:29:01,056 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:29:01,057 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:29:01,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:29:01,058 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:29:01,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:29:01,058 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:29:01,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:29:01,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:29:01,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:29:01,059 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:29:01,059 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:29:01,060 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:29:01,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:29:01,060 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:29:01,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:29:01,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:29:01,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:29:01,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:29:01,063 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:29:01,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:29:01,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:29:01,064 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:29:01,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:29:01,064 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:29:01,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:29:01,065 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:29:01,065 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_ae1f9ac5-c803-4330-bd61-0645119bc4ff/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 [2021-10-29 05:29:01,368 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:29:01,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:29:01,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:29:01,405 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:29:01,406 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:29:01,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-10-29 05:29:01,484 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/data/842607dae/417a923fc345462c8a02e0b5b803a8d2/FLAG899c412df [2021-10-29 05:29:01,940 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:29:01,942 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-10-29 05:29:01,951 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/data/842607dae/417a923fc345462c8a02e0b5b803a8d2/FLAG899c412df [2021-10-29 05:29:02,288 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/data/842607dae/417a923fc345462c8a02e0b5b803a8d2 [2021-10-29 05:29:02,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:29:02,291 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:29:02,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:29:02,297 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:29:02,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:29:02,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:29:02" (1/1) ... [2021-10-29 05:29:02,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@131d7359 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:02, skipping insertion in model container [2021-10-29 05:29:02,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:29:02" (1/1) ... [2021-10-29 05:29:02,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:29:02,326 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:29:02,519 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_ae1f9ac5-c803-4330-bd61-0645119bc4ff/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-10-29 05:29:02,523 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_ae1f9ac5-c803-4330-bd61-0645119bc4ff/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-10-29 05:29:02,524 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:29:02,531 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:29:02,553 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_ae1f9ac5-c803-4330-bd61-0645119bc4ff/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-10-29 05:29:02,555 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_ae1f9ac5-c803-4330-bd61-0645119bc4ff/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-10-29 05:29:02,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:29:02,570 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:29:02,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:02 WrapperNode [2021-10-29 05:29:02,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:29:02,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:29:02,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:29:02,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:29:02,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:02" (1/1) ... [2021-10-29 05:29:02,590 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:02" (1/1) ... [2021-10-29 05:29:02,617 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:29:02,618 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:29:02,619 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:29:02,619 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:29:02,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:02" (1/1) ... [2021-10-29 05:29:02,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:02" (1/1) ... [2021-10-29 05:29:02,630 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:02" (1/1) ... [2021-10-29 05:29:02,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:02" (1/1) ... [2021-10-29 05:29:02,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:02" (1/1) ... [2021-10-29 05:29:02,644 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:02" (1/1) ... [2021-10-29 05:29:02,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:02" (1/1) ... [2021-10-29 05:29:02,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:29:02,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:29:02,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:29:02,652 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:29:02,653 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:02" (1/1) ... [2021-10-29 05:29:02,678 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:29:02,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:29:02,732 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:29:02,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:29:02,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:29:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:29:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-29 05:29:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:29:02,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:29:02,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 05:29:02,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:29:03,664 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:29:03,665 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-29 05:29:03,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:29:03 BoogieIcfgContainer [2021-10-29 05:29:03,670 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:29:03,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:29:03,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:29:03,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:29:03,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:29:02" (1/3) ... [2021-10-29 05:29:03,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1d4957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:29:03, skipping insertion in model container [2021-10-29 05:29:03,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:02" (2/3) ... [2021-10-29 05:29:03,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1d4957 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:29:03, skipping insertion in model container [2021-10-29 05:29:03,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:29:03" (3/3) ... [2021-10-29 05:29:03,679 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2021-10-29 05:29:03,684 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:29:03,685 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-29 05:29:03,738 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:29:03,744 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 05:29:03,744 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-29 05:29:03,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 16 states have (on average 1.625) internal successors, (26), 18 states have internal predecessors, (26), 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 05:29:03,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:29:03,759 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:03,760 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:03,760 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:29:03,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:03,766 INFO L85 PathProgramCache]: Analyzing trace with hash -472833128, now seen corresponding path program 1 times [2021-10-29 05:29:03,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:29:03,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938464610] [2021-10-29 05:29:03,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:03,776 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:29:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:04,003 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 05:29:04,004 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:29:04,004 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938464610] [2021-10-29 05:29:04,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938464610] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:04,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:04,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-29 05:29:04,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997077512] [2021-10-29 05:29:04,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:29:04,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:29:04,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:29:04,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:29:04,029 INFO L87 Difference]: Start difference. First operand has 19 states, 16 states have (on average 1.625) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:29:04,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:04,044 INFO L93 Difference]: Finished difference Result 36 states and 49 transitions. [2021-10-29 05:29:04,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:29:04,046 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 05:29:04,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:04,053 INFO L225 Difference]: With dead ends: 36 [2021-10-29 05:29:04,053 INFO L226 Difference]: Without dead ends: 16 [2021-10-29 05:29:04,055 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:29:04,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-29 05:29:04,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-29 05:29:04,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 15 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 05:29:04,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-10-29 05:29:04,085 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 8 [2021-10-29 05:29:04,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:04,086 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-10-29 05:29:04,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:29:04,086 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-10-29 05:29:04,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:29:04,087 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:04,087 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:04,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:29:04,088 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:29:04,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:04,093 INFO L85 PathProgramCache]: Analyzing trace with hash 602078252, now seen corresponding path program 1 times [2021-10-29 05:29:04,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:29:04,094 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448917040] [2021-10-29 05:29:04,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:04,095 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:29:04,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:29:04,206 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:29:04,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:29:04,346 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:29:04,346 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:29:04,347 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:29:04,349 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:29:04,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:29:04,352 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-29 05:29:04,355 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:29:04,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:29:04 BoogieIcfgContainer [2021-10-29 05:29:04,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:29:04,380 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:29:04,380 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:29:04,380 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:29:04,381 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:29:03" (3/4) ... [2021-10-29 05:29:04,383 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:29:04,384 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:29:04,385 INFO L168 Benchmark]: Toolchain (without parser) took 2092.99 ms. Allocated memory is still 121.6 MB. Free memory was 83.0 MB in the beginning and 72.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 9.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:29:04,386 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 121.6 MB. Free memory is still 100.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:29:04,387 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.61 ms. Allocated memory is still 121.6 MB. Free memory was 82.8 MB in the beginning and 95.6 MB in the end (delta: -12.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:29:04,387 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.52 ms. Allocated memory is still 121.6 MB. Free memory was 95.6 MB in the beginning and 93.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:29:04,388 INFO L168 Benchmark]: Boogie Preprocessor took 31.92 ms. Allocated memory is still 121.6 MB. Free memory was 93.5 MB in the beginning and 92.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:29:04,388 INFO L168 Benchmark]: RCFGBuilder took 1018.47 ms. Allocated memory is still 121.6 MB. Free memory was 92.0 MB in the beginning and 55.8 MB in the end (delta: 36.2 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:29:04,389 INFO L168 Benchmark]: TraceAbstraction took 708.09 ms. Allocated memory is still 121.6 MB. Free memory was 55.3 MB in the beginning and 73.6 MB in the end (delta: -18.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:29:04,390 INFO L168 Benchmark]: Witness Printer took 3.98 ms. Allocated memory is still 121.6 MB. Free memory was 73.6 MB in the beginning and 72.9 MB in the end (delta: 683.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:29:04,393 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 121.6 MB. Free memory is still 100.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 274.61 ms. Allocated memory is still 121.6 MB. Free memory was 82.8 MB in the beginning and 95.6 MB in the end (delta: -12.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.52 ms. Allocated memory is still 121.6 MB. Free memory was 95.6 MB in the beginning and 93.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.92 ms. Allocated memory is still 121.6 MB. Free memory was 93.5 MB in the beginning and 92.0 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1018.47 ms. Allocated memory is still 121.6 MB. Free memory was 92.0 MB in the beginning and 55.8 MB in the end (delta: 36.2 MB). Peak memory consumption was 37.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 708.09 ms. Allocated memory is still 121.6 MB. Free memory was 55.3 MB in the beginning and 73.6 MB in the end (delta: -18.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 3.98 ms. Allocated memory is still 121.6 MB. Free memory was 73.6 MB in the beginning and 72.9 MB in the end (delta: 683.6 kB). 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 - UnprovableResult [Line: 77]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 76. Possible FailurePath: [L68] float x = __VERIFIER_nondet_float(); [L69] float y = __VERIFIER_nondet_float(); [L59] return x != x; [L70] EXPR isnan_float(x) && !isnan_float(y) [L59] return x != x; [L70] EXPR isnan_float(x) && !isnan_float(y) [L70-L71] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L70-L71] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; [L73] float res = fmin_float(x, y); [L59] return x != x; [L76] EXPR isnan_float(x) && !isnan_float(y) [L59] return x != x; [L76] EXPR isnan_float(x) && !isnan_float(y) [L76] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L77] reach_error() - UnprovableResult [Line: 83]: 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, 19 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 05:29:04,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:29:06,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:29:06,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:29:06,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:29:06,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:29:06,938 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:29:06,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:29:06,947 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:29:06,950 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:29:06,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:29:06,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:29:06,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:29:06,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:29:06,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:29:06,966 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:29:06,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:29:06,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:29:06,973 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:29:06,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:29:06,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:29:06,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:29:06,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:29:06,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:29:06,990 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:29:06,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:29:06,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:29:07,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:29:07,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:29:07,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:29:07,004 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:29:07,005 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:29:07,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:29:07,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:29:07,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:29:07,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:29:07,010 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:29:07,011 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:29:07,011 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:29:07,011 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:29:07,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:29:07,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:29:07,019 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:29:07,058 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:29:07,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:29:07,059 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:29:07,060 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:29:07,060 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:29:07,060 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:29:07,060 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:29:07,060 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:29:07,061 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:29:07,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:29:07,062 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:29:07,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:29:07,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:29:07,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:29:07,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:29:07,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:29:07,063 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:29:07,063 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:29:07,063 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:29:07,063 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:29:07,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:29:07,064 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:29:07,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:29:07,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:29:07,064 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:29:07,064 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:29:07,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:29:07,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:29:07,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:29:07,065 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:29:07,065 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:29:07,066 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:29:07,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:29:07,066 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:29:07,066 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:29:07,066 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_ae1f9ac5-c803-4330-bd61-0645119bc4ff/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 [2021-10-29 05:29:07,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:29:07,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:29:07,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:29:07,520 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:29:07,521 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:29:07,522 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-10-29 05:29:07,594 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/data/b9e2d8ae6/c7552ef14b054c08a3034be8b23d4ec5/FLAG30750476c [2021-10-29 05:29:08,071 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:29:08,071 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2021-10-29 05:29:08,082 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/data/b9e2d8ae6/c7552ef14b054c08a3034be8b23d4ec5/FLAG30750476c [2021-10-29 05:29:08,440 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/data/b9e2d8ae6/c7552ef14b054c08a3034be8b23d4ec5 [2021-10-29 05:29:08,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:29:08,444 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:29:08,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:29:08,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:29:08,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:29:08,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:29:08" (1/1) ... [2021-10-29 05:29:08,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fc56eac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:08, skipping insertion in model container [2021-10-29 05:29:08,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:29:08" (1/1) ... [2021-10-29 05:29:08,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:29:08,477 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:29:08,625 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_ae1f9ac5-c803-4330-bd61-0645119bc4ff/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-10-29 05:29:08,629 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_ae1f9ac5-c803-4330-bd61-0645119bc4ff/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-10-29 05:29:08,630 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:29:08,644 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:29:08,688 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_ae1f9ac5-c803-4330-bd61-0645119bc4ff/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2021-10-29 05:29:08,689 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_ae1f9ac5-c803-4330-bd61-0645119bc4ff/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2021-10-29 05:29:08,707 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:29:08,723 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:29:08,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:08 WrapperNode [2021-10-29 05:29:08,724 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:29:08,725 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:29:08,725 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:29:08,725 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:29:08,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:08" (1/1) ... [2021-10-29 05:29:08,759 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:08" (1/1) ... [2021-10-29 05:29:08,803 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:29:08,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:29:08,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:29:08,805 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:29:08,813 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:08" (1/1) ... [2021-10-29 05:29:08,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:08" (1/1) ... [2021-10-29 05:29:08,818 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:08" (1/1) ... [2021-10-29 05:29:08,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:08" (1/1) ... [2021-10-29 05:29:08,828 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:08" (1/1) ... [2021-10-29 05:29:08,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:08" (1/1) ... [2021-10-29 05:29:08,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:08" (1/1) ... [2021-10-29 05:29:08,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:29:08,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:29:08,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:29:08,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:29:08,842 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:08" (1/1) ... [2021-10-29 05:29:08,850 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:29:08,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:29:08,901 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:29:08,913 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:29:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:29:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:29:08,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-29 05:29:08,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:29:08,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:29:08,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-29 05:29:08,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:29:09,442 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:29:09,442 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-29 05:29:09,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:29:09 BoogieIcfgContainer [2021-10-29 05:29:09,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:29:09,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:29:09,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:29:09,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:29:09,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:29:08" (1/3) ... [2021-10-29 05:29:09,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53259917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:29:09, skipping insertion in model container [2021-10-29 05:29:09,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:29:08" (2/3) ... [2021-10-29 05:29:09,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53259917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:29:09, skipping insertion in model container [2021-10-29 05:29:09,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:29:09" (3/3) ... [2021-10-29 05:29:09,458 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2021-10-29 05:29:09,463 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:29:09,464 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-29 05:29:09,529 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:29:09,540 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 05:29:09,540 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-29 05:29:09,558 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 46 states have internal predecessors, (69), 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 05:29:09,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 05:29:09,575 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:09,576 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:09,576 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:29:09,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:09,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1204154757, now seen corresponding path program 1 times [2021-10-29 05:29:09,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:09,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [535208172] [2021-10-29 05:29:09,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:09,596 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:09,596 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:09,601 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:09,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:29:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:09,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 05:29:09,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:09,834 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 05:29:09,835 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:09,908 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 05:29:09,909 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:09,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [535208172] [2021-10-29 05:29:09,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [535208172] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:09,911 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:09,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:29:09,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544642801] [2021-10-29 05:29:09,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:29:09,921 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:09,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:29:09,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:29:09,940 INFO L87 Difference]: Start difference. First operand has 47 states, 44 states have (on average 1.5681818181818181) internal successors, (69), 46 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 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 05:29:09,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:09,969 INFO L93 Difference]: Finished difference Result 82 states and 122 transitions. [2021-10-29 05:29:09,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:29:09,972 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 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) Word has length 16 [2021-10-29 05:29:09,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:09,980 INFO L225 Difference]: With dead ends: 82 [2021-10-29 05:29:09,981 INFO L226 Difference]: Without dead ends: 43 [2021-10-29 05:29:09,984 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:29:10,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-29 05:29:10,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2021-10-29 05:29:10,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.4146341463414633) internal successors, (58), 42 states have internal predecessors, (58), 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 05:29:10,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2021-10-29 05:29:10,033 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 16 [2021-10-29 05:29:10,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:10,033 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2021-10-29 05:29:10,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 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 05:29:10,035 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2021-10-29 05:29:10,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 05:29:10,037 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:10,038 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:10,055 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:10,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:10,251 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:29:10,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:10,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1262247077, now seen corresponding path program 1 times [2021-10-29 05:29:10,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:10,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369143692] [2021-10-29 05:29:10,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:10,254 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:10,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:10,255 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:10,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:29:10,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:10,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:29:10,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:10,421 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 05:29:10,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:10,465 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 05:29:10,465 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:10,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369143692] [2021-10-29 05:29:10,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369143692] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:10,466 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:10,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:29:10,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529017573] [2021-10-29 05:29:10,468 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:29:10,468 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:10,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:29:10,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:29:10,470 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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 05:29:10,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:10,515 INFO L93 Difference]: Finished difference Result 82 states and 111 transitions. [2021-10-29 05:29:10,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:29:10,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) Word has length 17 [2021-10-29 05:29:10,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:10,517 INFO L225 Difference]: With dead ends: 82 [2021-10-29 05:29:10,517 INFO L226 Difference]: Without dead ends: 50 [2021-10-29 05:29:10,518 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:29:10,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-10-29 05:29:10,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2021-10-29 05:29:10,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.3953488372093024) internal successors, (60), 44 states have internal predecessors, (60), 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 05:29:10,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2021-10-29 05:29:10,525 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 17 [2021-10-29 05:29:10,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:10,526 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2021-10-29 05:29:10,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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 05:29:10,526 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2021-10-29 05:29:10,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-29 05:29:10,527 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:10,528 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:10,544 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:10,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:10,740 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:29:10,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:10,741 INFO L85 PathProgramCache]: Analyzing trace with hash 44236684, now seen corresponding path program 1 times [2021-10-29 05:29:10,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:10,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1403081557] [2021-10-29 05:29:10,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:10,742 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:10,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:10,748 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:10,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-29 05:29:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:10,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:29:10,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:10,898 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 05:29:10,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:10,975 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 05:29:10,975 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:10,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1403081557] [2021-10-29 05:29:10,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1403081557] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:10,976 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:10,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 05:29:10,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438161113] [2021-10-29 05:29:10,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:29:10,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:10,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:29:10,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:29:10,979 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 05:29:11,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:11,090 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2021-10-29 05:29:11,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:29:11,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 18 [2021-10-29 05:29:11,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:11,107 INFO L225 Difference]: With dead ends: 96 [2021-10-29 05:29:11,107 INFO L226 Difference]: Without dead ends: 83 [2021-10-29 05:29:11,108 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:29:11,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-29 05:29:11,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 47. [2021-10-29 05:29:11,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.3777777777777778) internal successors, (62), 46 states have internal predecessors, (62), 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 05:29:11,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-10-29 05:29:11,117 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2021-10-29 05:29:11,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:11,117 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-10-29 05:29:11,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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 05:29:11,118 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-10-29 05:29:11,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-29 05:29:11,119 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:11,119 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:11,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:11,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:11,335 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:29:11,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:11,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1380709804, now seen corresponding path program 1 times [2021-10-29 05:29:11,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:11,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [410592415] [2021-10-29 05:29:11,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:11,336 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:11,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:11,338 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:11,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-29 05:29:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:11,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-29 05:29:11,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:11,764 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 05:29:11,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:11,919 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 05:29:11,921 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:11,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [410592415] [2021-10-29 05:29:11,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [410592415] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:11,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:11,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-10-29 05:29:11,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492734797] [2021-10-29 05:29:11,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 05:29:11,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:11,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 05:29:11,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:29:11,928 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 05:29:12,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:12,379 INFO L93 Difference]: Finished difference Result 149 states and 197 transitions. [2021-10-29 05:29:12,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 05:29:12,380 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 21 [2021-10-29 05:29:12,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:12,382 INFO L225 Difference]: With dead ends: 149 [2021-10-29 05:29:12,382 INFO L226 Difference]: Without dead ends: 140 [2021-10-29 05:29:12,383 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2021-10-29 05:29:12,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-10-29 05:29:12,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 75. [2021-10-29 05:29:12,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.3972602739726028) internal successors, (102), 74 states have internal predecessors, (102), 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 05:29:12,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2021-10-29 05:29:12,396 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 21 [2021-10-29 05:29:12,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:12,396 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2021-10-29 05:29:12,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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 05:29:12,397 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2021-10-29 05:29:12,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-29 05:29:12,400 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:12,400 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:12,419 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:12,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:12,613 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:29:12,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:12,614 INFO L85 PathProgramCache]: Analyzing trace with hash 147544209, now seen corresponding path program 1 times [2021-10-29 05:29:12,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:12,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [834812267] [2021-10-29 05:29:12,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:12,615 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:12,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:12,616 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:12,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-29 05:29:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:12,727 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-29 05:29:12,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:13,397 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 05:29:13,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:13,588 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 05:29:13,588 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:13,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [834812267] [2021-10-29 05:29:13,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [834812267] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:13,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:13,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2021-10-29 05:29:13,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129737884] [2021-10-29 05:29:13,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-29 05:29:13,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:13,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-29 05:29:13,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-29 05:29:13,591 INFO L87 Difference]: Start difference. First operand 75 states and 102 transitions. Second operand has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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 05:29:14,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:14,738 INFO L93 Difference]: Finished difference Result 180 states and 237 transitions. [2021-10-29 05:29:14,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-29 05:29:14,738 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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 22 [2021-10-29 05:29:14,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:14,740 INFO L225 Difference]: With dead ends: 180 [2021-10-29 05:29:14,740 INFO L226 Difference]: Without dead ends: 178 [2021-10-29 05:29:14,741 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2021-10-29 05:29:14,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2021-10-29 05:29:14,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 89. [2021-10-29 05:29:14,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.3908045977011494) internal successors, (121), 88 states have internal predecessors, (121), 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 05:29:14,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2021-10-29 05:29:14,759 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 22 [2021-10-29 05:29:14,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:14,760 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2021-10-29 05:29:14,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.6666666666666665) internal successors, (40), 15 states have internal predecessors, (40), 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 05:29:14,760 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2021-10-29 05:29:14,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-29 05:29:14,763 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:14,763 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:14,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:14,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:14,983 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:29:14,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:14,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1845695531, now seen corresponding path program 1 times [2021-10-29 05:29:14,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:14,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1346988482] [2021-10-29 05:29:14,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:14,984 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:14,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:14,985 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:14,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-29 05:29:15,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:15,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-29 05:29:15,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:15,259 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 05:29:15,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:15,373 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 05:29:15,373 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:15,373 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1346988482] [2021-10-29 05:29:15,373 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1346988482] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:15,373 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:15,373 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-10-29 05:29:15,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652041257] [2021-10-29 05:29:15,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 05:29:15,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:15,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 05:29:15,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:29:15,377 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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 05:29:15,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:15,970 INFO L93 Difference]: Finished difference Result 166 states and 219 transitions. [2021-10-29 05:29:15,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-29 05:29:15,971 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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 23 [2021-10-29 05:29:15,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:15,972 INFO L225 Difference]: With dead ends: 166 [2021-10-29 05:29:15,972 INFO L226 Difference]: Without dead ends: 131 [2021-10-29 05:29:15,973 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-10-29 05:29:15,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2021-10-29 05:29:15,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 89. [2021-10-29 05:29:15,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.3793103448275863) internal successors, (120), 88 states have internal predecessors, (120), 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 05:29:15,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2021-10-29 05:29:15,984 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 23 [2021-10-29 05:29:15,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:15,984 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2021-10-29 05:29:15,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.888888888888889) internal successors, (26), 9 states have internal predecessors, (26), 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 05:29:15,984 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2021-10-29 05:29:15,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-29 05:29:15,986 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:15,986 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:15,999 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-10-29 05:29:16,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:16,195 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:29:16,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:16,195 INFO L85 PathProgramCache]: Analyzing trace with hash 156888005, now seen corresponding path program 1 times [2021-10-29 05:29:16,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:16,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1284858413] [2021-10-29 05:29:16,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:16,196 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:16,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:16,196 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:16,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-29 05:29:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:16,339 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:29:16,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:16,408 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 05:29:16,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:16,489 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 05:29:16,490 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:16,490 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1284858413] [2021-10-29 05:29:16,490 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1284858413] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:16,490 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:16,490 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-29 05:29:16,491 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788128637] [2021-10-29 05:29:16,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:29:16,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:16,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:29:16,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:29:16,494 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 05:29:16,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:16,564 INFO L93 Difference]: Finished difference Result 157 states and 199 transitions. [2021-10-29 05:29:16,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:29:16,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 24 [2021-10-29 05:29:16,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:16,569 INFO L225 Difference]: With dead ends: 157 [2021-10-29 05:29:16,569 INFO L226 Difference]: Without dead ends: 141 [2021-10-29 05:29:16,569 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:29:16,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-10-29 05:29:16,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 93. [2021-10-29 05:29:16,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 91 states have (on average 1.3626373626373627) internal successors, (124), 92 states have internal predecessors, (124), 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 05:29:16,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2021-10-29 05:29:16,581 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2021-10-29 05:29:16,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:16,582 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2021-10-29 05:29:16,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.5) internal successors, (27), 6 states have internal predecessors, (27), 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 05:29:16,582 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2021-10-29 05:29:16,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-29 05:29:16,583 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:16,584 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:16,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:16,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:16,808 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:29:16,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:16,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1621213116, now seen corresponding path program 1 times [2021-10-29 05:29:16,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:16,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [659027343] [2021-10-29 05:29:16,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:16,809 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:16,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:16,810 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:16,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-29 05:29:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:16,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-29 05:29:16,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:16,993 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 05:29:16,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:17,026 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 05:29:17,027 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:17,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [659027343] [2021-10-29 05:29:17,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [659027343] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:17,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:17,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-10-29 05:29:17,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005307841] [2021-10-29 05:29:17,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:29:17,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:17,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:29:17,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:29:17,030 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 05:29:17,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:17,067 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2021-10-29 05:29:17,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:29:17,068 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 24 [2021-10-29 05:29:17,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:17,069 INFO L225 Difference]: With dead ends: 96 [2021-10-29 05:29:17,069 INFO L226 Difference]: Without dead ends: 94 [2021-10-29 05:29:17,069 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:29:17,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2021-10-29 05:29:17,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2021-10-29 05:29:17,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 91 states have (on average 1.3626373626373627) internal successors, (124), 92 states have internal predecessors, (124), 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 05:29:17,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2021-10-29 05:29:17,078 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2021-10-29 05:29:17,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:17,079 INFO L470 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2021-10-29 05:29:17,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 05:29:17,079 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2021-10-29 05:29:17,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-29 05:29:17,080 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:17,080 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:17,098 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:17,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:17,294 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:29:17,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:17,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1741974657, now seen corresponding path program 1 times [2021-10-29 05:29:17,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:17,296 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1609870613] [2021-10-29 05:29:17,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:17,296 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:17,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:17,297 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:17,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-10-29 05:29:17,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:17,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-29 05:29:17,478 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:17,678 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 05:29:17,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:17,802 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 05:29:17,802 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:17,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1609870613] [2021-10-29 05:29:17,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1609870613] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:17,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:17,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2021-10-29 05:29:17,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799353473] [2021-10-29 05:29:17,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 05:29:17,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:17,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 05:29:17,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:29:17,804 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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 05:29:18,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:18,127 INFO L93 Difference]: Finished difference Result 131 states and 173 transitions. [2021-10-29 05:29:18,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 05:29:18,128 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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 25 [2021-10-29 05:29:18,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:18,129 INFO L225 Difference]: With dead ends: 131 [2021-10-29 05:29:18,129 INFO L226 Difference]: Without dead ends: 118 [2021-10-29 05:29:18,130 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2021-10-29 05:29:18,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2021-10-29 05:29:18,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 89. [2021-10-29 05:29:18,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 87 states have (on average 1.3563218390804597) internal successors, (118), 88 states have internal predecessors, (118), 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 05:29:18,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 118 transitions. [2021-10-29 05:29:18,138 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 118 transitions. Word has length 25 [2021-10-29 05:29:18,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:18,139 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 118 transitions. [2021-10-29 05:29:18,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 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 05:29:18,139 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 118 transitions. [2021-10-29 05:29:18,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-29 05:29:18,140 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:18,140 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:18,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:18,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:18,353 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:29:18,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:18,354 INFO L85 PathProgramCache]: Analyzing trace with hash 839729769, now seen corresponding path program 1 times [2021-10-29 05:29:18,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:18,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [491730105] [2021-10-29 05:29:18,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:18,354 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:18,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:18,355 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:18,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-10-29 05:29:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:18,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-29 05:29:18,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:18,748 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 05:29:18,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:18,881 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 05:29:18,882 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:18,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [491730105] [2021-10-29 05:29:18,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [491730105] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:18,882 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:18,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 11 [2021-10-29 05:29:18,882 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664685958] [2021-10-29 05:29:18,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-29 05:29:18,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:18,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-29 05:29:18,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-10-29 05:29:18,884 INFO L87 Difference]: Start difference. First operand 89 states and 118 transitions. Second operand has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 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 05:29:19,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:19,360 INFO L93 Difference]: Finished difference Result 114 states and 147 transitions. [2021-10-29 05:29:19,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-29 05:29:19,360 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 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 25 [2021-10-29 05:29:19,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:19,361 INFO L225 Difference]: With dead ends: 114 [2021-10-29 05:29:19,361 INFO L226 Difference]: Without dead ends: 78 [2021-10-29 05:29:19,362 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-10-29 05:29:19,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-29 05:29:19,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-10-29 05:29:19,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 75 states have internal predecessors, (98), 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 05:29:19,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2021-10-29 05:29:19,368 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 25 [2021-10-29 05:29:19,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:19,369 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2021-10-29 05:29:19,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.727272727272727) internal successors, (30), 11 states have internal predecessors, (30), 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 05:29:19,369 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2021-10-29 05:29:19,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-29 05:29:19,370 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:19,370 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:19,382 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:19,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:19,578 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:29:19,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:19,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1281876129, now seen corresponding path program 1 times [2021-10-29 05:29:19,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:19,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571856686] [2021-10-29 05:29:19,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:19,579 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:19,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:19,580 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:19,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-10-29 05:29:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:19,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-29 05:29:19,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:19,987 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 05:29:19,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:20,094 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 05:29:20,094 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:20,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571856686] [2021-10-29 05:29:20,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571856686] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:20,095 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:20,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2021-10-29 05:29:20,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931015674] [2021-10-29 05:29:20,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-29 05:29:20,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:20,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-29 05:29:20,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:29:20,096 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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 05:29:20,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:20,331 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2021-10-29 05:29:20,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-29 05:29:20,332 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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 25 [2021-10-29 05:29:20,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:20,332 INFO L225 Difference]: With dead ends: 84 [2021-10-29 05:29:20,332 INFO L226 Difference]: Without dead ends: 74 [2021-10-29 05:29:20,333 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-10-29 05:29:20,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-29 05:29:20,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-29 05:29:20,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 72 states have (on average 1.3055555555555556) internal successors, (94), 73 states have internal predecessors, (94), 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 05:29:20,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2021-10-29 05:29:20,339 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 25 [2021-10-29 05:29:20,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:20,339 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2021-10-29 05:29:20,340 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 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 05:29:20,340 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2021-10-29 05:29:20,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-29 05:29:20,345 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:20,345 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:20,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:20,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:20,558 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:29:20,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:20,559 INFO L85 PathProgramCache]: Analyzing trace with hash -144403189, now seen corresponding path program 1 times [2021-10-29 05:29:20,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:20,559 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1109490738] [2021-10-29 05:29:20,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:20,559 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:20,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:20,560 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:20,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-10-29 05:29:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:20,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-29 05:29:20,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:20,922 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 05:29:20,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:21,369 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 05:29:21,370 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:21,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1109490738] [2021-10-29 05:29:21,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1109490738] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:21,370 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:21,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-29 05:29:21,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531698241] [2021-10-29 05:29:21,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 05:29:21,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:21,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 05:29:21,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:29:21,372 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 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 05:29:21,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:21,705 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2021-10-29 05:29:21,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-29 05:29:21,705 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 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 26 [2021-10-29 05:29:21,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:21,706 INFO L225 Difference]: With dead ends: 82 [2021-10-29 05:29:21,706 INFO L226 Difference]: Without dead ends: 74 [2021-10-29 05:29:21,707 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-10-29 05:29:21,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-10-29 05:29:21,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2021-10-29 05:29:21,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 72 states have (on average 1.2916666666666667) internal successors, (93), 73 states have internal predecessors, (93), 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 05:29:21,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2021-10-29 05:29:21,712 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 26 [2021-10-29 05:29:21,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:21,713 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2021-10-29 05:29:21,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.4) internal successors, (44), 10 states have internal predecessors, (44), 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 05:29:21,713 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2021-10-29 05:29:21,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-29 05:29:21,713 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:21,713 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:21,734 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:21,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:21,925 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:29:21,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:21,926 INFO L85 PathProgramCache]: Analyzing trace with hash -953749815, now seen corresponding path program 1 times [2021-10-29 05:29:21,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:21,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407182519] [2021-10-29 05:29:21,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:21,926 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:21,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:21,928 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:21,930 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-10-29 05:29:22,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:22,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-29 05:29:22,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:22,709 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 05:29:22,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:23,085 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 05:29:23,086 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:23,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407182519] [2021-10-29 05:29:23,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407182519] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:23,086 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:23,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2021-10-29 05:29:23,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378548078] [2021-10-29 05:29:23,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-29 05:29:23,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:23,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-29 05:29:23,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-10-29 05:29:23,088 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 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 05:29:24,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:24,680 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2021-10-29 05:29:24,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-29 05:29:24,681 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 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 26 [2021-10-29 05:29:24,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:24,682 INFO L225 Difference]: With dead ends: 154 [2021-10-29 05:29:24,682 INFO L226 Difference]: Without dead ends: 134 [2021-10-29 05:29:24,683 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2021-10-29 05:29:24,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-10-29 05:29:24,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 72. [2021-10-29 05:29:24,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 70 states have (on average 1.2428571428571429) internal successors, (87), 71 states have internal predecessors, (87), 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 05:29:24,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2021-10-29 05:29:24,690 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 26 [2021-10-29 05:29:24,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:24,690 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2021-10-29 05:29:24,690 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.75) internal successors, (44), 16 states have internal predecessors, (44), 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 05:29:24,690 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2021-10-29 05:29:24,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-29 05:29:24,691 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:24,691 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:24,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:24,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:24,903 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:29:24,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:24,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1548503636, now seen corresponding path program 1 times [2021-10-29 05:29:24,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:24,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [616858636] [2021-10-29 05:29:24,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:24,904 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:24,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:24,904 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:24,905 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-10-29 05:29:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:25,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-29 05:29:25,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:25,600 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 05:29:25,600 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:25,924 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 05:29:25,924 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:25,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [616858636] [2021-10-29 05:29:25,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [616858636] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:25,924 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:25,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 15 [2021-10-29 05:29:25,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642974935] [2021-10-29 05:29:25,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-29 05:29:25,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:25,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-29 05:29:25,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-10-29 05:29:25,926 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 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 05:29:27,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:27,708 INFO L93 Difference]: Finished difference Result 195 states and 205 transitions. [2021-10-29 05:29:27,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-10-29 05:29:27,708 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 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 27 [2021-10-29 05:29:27,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:27,709 INFO L225 Difference]: With dead ends: 195 [2021-10-29 05:29:27,709 INFO L226 Difference]: Without dead ends: 158 [2021-10-29 05:29:27,711 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=455, Invalid=1437, Unknown=0, NotChecked=0, Total=1892 [2021-10-29 05:29:27,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-10-29 05:29:27,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 43. [2021-10-29 05:29:27,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.2619047619047619) internal successors, (53), 42 states have internal predecessors, (53), 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 05:29:27,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2021-10-29 05:29:27,718 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 27 [2021-10-29 05:29:27,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:27,718 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2021-10-29 05:29:27,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.066666666666667) internal successors, (31), 15 states have internal predecessors, (31), 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 05:29:27,718 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2021-10-29 05:29:27,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-29 05:29:27,719 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:27,719 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:27,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:27,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:27,955 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:29:27,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:27,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1364791880, now seen corresponding path program 1 times [2021-10-29 05:29:27,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:27,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207603701] [2021-10-29 05:29:27,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:27,957 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:27,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:27,958 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:27,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-10-29 05:29:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:28,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-29 05:29:28,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:28,619 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 05:29:28,620 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:28,869 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 05:29:28,869 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:28,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207603701] [2021-10-29 05:29:28,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207603701] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:28,869 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:28,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2021-10-29 05:29:28,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208519039] [2021-10-29 05:29:28,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-29 05:29:28,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:28,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-29 05:29:28,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-29 05:29:28,871 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 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 05:29:29,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:29,676 INFO L93 Difference]: Finished difference Result 125 states and 140 transitions. [2021-10-29 05:29:29,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-29 05:29:29,677 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 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 28 [2021-10-29 05:29:29,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:29,678 INFO L225 Difference]: With dead ends: 125 [2021-10-29 05:29:29,678 INFO L226 Difference]: Without dead ends: 101 [2021-10-29 05:29:29,678 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2021-10-29 05:29:29,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-29 05:29:29,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 41. [2021-10-29 05:29:29,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.225) internal successors, (49), 40 states have internal predecessors, (49), 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 05:29:29,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2021-10-29 05:29:29,683 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2021-10-29 05:29:29,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:29,684 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2021-10-29 05:29:29,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 12 states have internal predecessors, (31), 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 05:29:29,684 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2021-10-29 05:29:29,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-29 05:29:29,684 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:29,685 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:29,702 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:29,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:29,895 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:29:29,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:29,896 INFO L85 PathProgramCache]: Analyzing trace with hash 430789518, now seen corresponding path program 1 times [2021-10-29 05:29:29,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:29,896 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472978283] [2021-10-29 05:29:29,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:29,896 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:29,897 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:29,898 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:29,937 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-10-29 05:29:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:30,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-29 05:29:30,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:30,397 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 05:29:30,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:30,839 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 05:29:30,839 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:30,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472978283] [2021-10-29 05:29:30,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472978283] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:30,840 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:30,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-10-29 05:29:30,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970412174] [2021-10-29 05:29:30,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-29 05:29:30,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:30,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-29 05:29:30,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-10-29 05:29:30,841 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 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 05:29:32,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:32,339 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-10-29 05:29:32,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 05:29:32,339 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 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 32 [2021-10-29 05:29:32,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:32,340 INFO L225 Difference]: With dead ends: 52 [2021-10-29 05:29:32,340 INFO L226 Difference]: Without dead ends: 41 [2021-10-29 05:29:32,340 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-10-29 05:29:32,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-29 05:29:32,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2021-10-29 05:29:32,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.2) internal successors, (48), 40 states have internal predecessors, (48), 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 05:29:32,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2021-10-29 05:29:32,346 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 32 [2021-10-29 05:29:32,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:32,346 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2021-10-29 05:29:32,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.7) internal successors, (47), 10 states have internal predecessors, (47), 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 05:29:32,349 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2021-10-29 05:29:32,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-29 05:29:32,350 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:32,350 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:32,370 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:32,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:32,564 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:29:32,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:32,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1131854096, now seen corresponding path program 1 times [2021-10-29 05:29:32,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:32,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [977491228] [2021-10-29 05:29:32,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:32,566 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:32,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:32,566 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:32,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-10-29 05:29:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:32,869 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-29 05:29:32,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:33,085 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 05:29:33,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:33,358 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 05:29:33,358 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:33,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [977491228] [2021-10-29 05:29:33,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [977491228] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:33,359 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:33,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2021-10-29 05:29:33,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298609580] [2021-10-29 05:29:33,359 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-29 05:29:33,359 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:33,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-29 05:29:33,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-10-29 05:29:33,360 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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 05:29:33,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:33,897 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2021-10-29 05:29:33,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-29 05:29:33,898 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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 32 [2021-10-29 05:29:33,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:33,898 INFO L225 Difference]: With dead ends: 55 [2021-10-29 05:29:33,898 INFO L226 Difference]: Without dead ends: 41 [2021-10-29 05:29:33,898 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-10-29 05:29:33,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-29 05:29:33,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2021-10-29 05:29:33,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.105263157894737) internal successors, (42), 38 states have internal predecessors, (42), 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 05:29:33,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2021-10-29 05:29:33,904 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2021-10-29 05:29:33,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:33,904 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2021-10-29 05:29:33,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 14 states have internal predecessors, (44), 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 05:29:33,905 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2021-10-29 05:29:33,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-29 05:29:33,905 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:33,905 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:33,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:34,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:34,110 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:29:34,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:34,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1713269395, now seen corresponding path program 1 times [2021-10-29 05:29:34,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:34,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1175168234] [2021-10-29 05:29:34,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:34,112 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:34,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:34,113 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:34,178 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-10-29 05:29:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:34,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-29 05:29:34,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:35,337 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 05:29:35,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:35,583 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 05:29:35,583 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:35,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1175168234] [2021-10-29 05:29:35,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1175168234] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:35,583 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:35,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-10-29 05:29:35,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483227060] [2021-10-29 05:29:35,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-29 05:29:35,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:35,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-29 05:29:35,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-29 05:29:35,585 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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 05:29:36,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:36,201 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2021-10-29 05:29:36,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-29 05:29:36,202 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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 33 [2021-10-29 05:29:36,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:36,203 INFO L225 Difference]: With dead ends: 79 [2021-10-29 05:29:36,203 INFO L226 Difference]: Without dead ends: 61 [2021-10-29 05:29:36,203 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2021-10-29 05:29:36,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-29 05:29:36,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 39. [2021-10-29 05:29:36,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0789473684210527) internal successors, (41), 38 states have internal predecessors, (41), 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 05:29:36,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2021-10-29 05:29:36,209 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 33 [2021-10-29 05:29:36,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:36,209 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2021-10-29 05:29:36,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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 05:29:36,210 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2021-10-29 05:29:36,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-29 05:29:36,210 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:29:36,210 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:36,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:36,435 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:36,436 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:29:36,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:29:36,436 INFO L85 PathProgramCache]: Analyzing trace with hash 739407273, now seen corresponding path program 1 times [2021-10-29 05:29:36,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:29:36,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [548752948] [2021-10-29 05:29:36,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:29:36,437 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:29:36,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:29:36,438 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:29:36,446 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-10-29 05:29:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:29:36,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-29 05:29:36,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:29:36,883 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 05:29:36,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:29:36,960 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 05:29:36,960 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:29:36,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [548752948] [2021-10-29 05:29:36,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [548752948] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:29:36,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:29:36,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-10-29 05:29:36,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508775283] [2021-10-29 05:29:36,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:29:36,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:29:36,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:29:36,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:29:36,964 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 05:29:37,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:29:37,010 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2021-10-29 05:29:37,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:29:37,010 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 35 [2021-10-29 05:29:37,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:29:37,011 INFO L225 Difference]: With dead ends: 39 [2021-10-29 05:29:37,011 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:29:37,011 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:29:37,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:29:37,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:29:37,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:29:37,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:29:37,012 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-10-29 05:29:37,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:29:37,012 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:29:37,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 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 05:29:37,012 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:29:37,012 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:29:37,015 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:29:37,015 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:29:37,031 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-10-29 05:29:37,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:29:37,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 05:29:37,219 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:29:37,330 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:29:37,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:29:37,477 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:29:37,500 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:29:37,589 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:29:37,595 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:29:37,689 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:29:37,691 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:29:37,772 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:29:37,777 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:29:37,865 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:29:37,868 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:29:37,888 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:29:44,100 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2021-10-29 05:29:44,100 INFO L857 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2021-10-29 05:29:44,100 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 05:29:44,100 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-29 05:29:44,100 INFO L857 garLoopResultBuilder]: For program point L28(lines 28 34) no Hoare annotation was computed. [2021-10-29 05:29:44,100 INFO L857 garLoopResultBuilder]: For program point L28-1(lines 28 34) no Hoare annotation was computed. [2021-10-29 05:29:44,100 INFO L857 garLoopResultBuilder]: For program point L70(line 70) no Hoare annotation was computed. [2021-10-29 05:29:44,101 INFO L857 garLoopResultBuilder]: For program point L70-2(line 70) no Hoare annotation was computed. [2021-10-29 05:29:44,102 INFO L857 garLoopResultBuilder]: For program point L70-3(lines 70 71) no Hoare annotation was computed. [2021-10-29 05:29:44,102 INFO L857 garLoopResultBuilder]: For program point L70-5(lines 70 86) no Hoare annotation was computed. [2021-10-29 05:29:44,102 INFO L857 garLoopResultBuilder]: For program point L70-7(lines 70 86) no Hoare annotation was computed. [2021-10-29 05:29:44,102 INFO L857 garLoopResultBuilder]: For program point L71(line 71) no Hoare annotation was computed. [2021-10-29 05:29:44,102 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 39) no Hoare annotation was computed. [2021-10-29 05:29:44,102 INFO L857 garLoopResultBuilder]: For program point L71-2(line 71) no Hoare annotation was computed. [2021-10-29 05:29:44,102 INFO L860 garLoopResultBuilder]: At program point L88(lines 61 89) the Hoare annotation is: true [2021-10-29 05:29:44,102 INFO L857 garLoopResultBuilder]: For program point L31(lines 31 34) no Hoare annotation was computed. [2021-10-29 05:29:44,102 INFO L857 garLoopResultBuilder]: For program point L31-1(lines 31 34) no Hoare annotation was computed. [2021-10-29 05:29:44,102 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 41) no Hoare annotation was computed. [2021-10-29 05:29:44,102 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-29 05:29:44,103 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 77) no Hoare annotation was computed. [2021-10-29 05:29:44,103 INFO L857 garLoopResultBuilder]: For program point L82(line 82) no Hoare annotation was computed. [2021-10-29 05:29:44,103 INFO L857 garLoopResultBuilder]: For program point L82-2(lines 82 85) no Hoare annotation was computed. [2021-10-29 05:29:44,103 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 05:29:44,103 INFO L857 garLoopResultBuilder]: For program point L25(lines 25 34) no Hoare annotation was computed. [2021-10-29 05:29:44,103 INFO L857 garLoopResultBuilder]: For program point L25-1(lines 25 34) no Hoare annotation was computed. [2021-10-29 05:29:44,103 INFO L857 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2021-10-29 05:29:44,104 INFO L857 garLoopResultBuilder]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2021-10-29 05:29:44,104 INFO L853 garLoopResultBuilder]: At program point L17-2(lines 17 21) the Hoare annotation is: (let ((.cse0 (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (.cse2 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) .cse0 (not .cse1) .cse2) (and (not .cse0) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) .cse2 .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)))) [2021-10-29 05:29:44,104 INFO L857 garLoopResultBuilder]: For program point L17-3(lines 14 35) no Hoare annotation was computed. [2021-10-29 05:29:44,104 INFO L857 garLoopResultBuilder]: For program point L17-5(lines 17 21) no Hoare annotation was computed. [2021-10-29 05:29:44,104 INFO L853 garLoopResultBuilder]: At program point L17-6(lines 17 21) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x)) (.cse1 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0 (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) .cse1) (and .cse0 (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)))) [2021-10-29 05:29:44,104 INFO L857 garLoopResultBuilder]: For program point L17-7(lines 14 35) no Hoare annotation was computed. [2021-10-29 05:29:44,104 INFO L853 garLoopResultBuilder]: At program point L34(lines 14 35) the Hoare annotation is: (let ((.cse0 (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (.cse2 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) .cse0 (not .cse1) .cse2) (and (not .cse0) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start___fpclassify_float_~x) (= ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) .cse2 .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= ULTIMATE.start_fmin_float_~x (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))))) [2021-10-29 05:29:44,104 INFO L853 garLoopResultBuilder]: At program point L34-1(lines 14 35) the Hoare annotation is: (let ((.cse1 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (let ((.cse2 (= ULTIMATE.start_fmin_float_~y .cse1)) (.cse3 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse0 (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|))) (or (and .cse0 (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (not (fp.eq .cse1 .cse1)) .cse2 .cse3 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) .cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) .cse3 (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0) (not .cse0))))) [2021-10-29 05:29:44,104 INFO L853 garLoopResultBuilder]: At program point L59(line 59) the Hoare annotation is: (let ((.cse0 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (not .cse0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)))) [2021-10-29 05:29:44,105 INFO L853 garLoopResultBuilder]: At program point L59-1(line 59) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short16| (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (not .cse0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0))) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) [2021-10-29 05:29:44,105 INFO L853 garLoopResultBuilder]: At program point L59-2(line 59) the Hoare annotation is: (let ((.cse0 (not |ULTIMATE.start_main_#t~short20|)) (.cse2 (not |ULTIMATE.start_main_#t~short16|)) (.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and .cse0 (not (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (not .cse1) .cse2 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and .cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse2 .cse1))) [2021-10-29 05:29:44,105 INFO L853 garLoopResultBuilder]: At program point L59-3(line 59) the Hoare annotation is: (and (not |ULTIMATE.start_main_#t~short20|) |ULTIMATE.start_main_#t~short19| (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (not .cse0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0))) (not |ULTIMATE.start_main_#t~short16|) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) [2021-10-29 05:29:44,105 INFO L853 garLoopResultBuilder]: At program point L59-4(line 59) the Hoare annotation is: (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (.cse1 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0)) (.cse3 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (not (fp.eq .cse0 .cse0)) .cse1 (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~x~0)) (and (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmin_float_#res|) .cse2 .cse1 .cse3) (and (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (= ULTIMATE.start_fmin_float_~y .cse0) .cse2 (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~y~0) .cse1 .cse3))) [2021-10-29 05:29:44,105 INFO L853 garLoopResultBuilder]: At program point L59-5(line 59) the Hoare annotation is: (let ((.cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|)) (.cse1 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (.cse2 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0))) (or (and |ULTIMATE.start_main_#t~short24| (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~y~0) .cse0 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (= ULTIMATE.start_fmin_float_~y (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) .cse1 (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~y~0) .cse2) (and |ULTIMATE.start_main_#t~short24| .cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmin_float_#res|) .cse1 .cse2))) [2021-10-29 05:29:44,106 INFO L853 garLoopResultBuilder]: At program point L59-6(line 59) the Hoare annotation is: (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (not (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse0 .cse0))) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0) (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~x~0)) (and (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|))) [2021-10-29 05:29:44,106 INFO L853 garLoopResultBuilder]: At program point L59-7(line 59) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (not (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse0 .cse0))) (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~x~0)) [2021-10-29 05:29:44,106 INFO L857 garLoopResultBuilder]: For program point L76(line 76) no Hoare annotation was computed. [2021-10-29 05:29:44,106 INFO L857 garLoopResultBuilder]: For program point L43(line 43) no Hoare annotation was computed. [2021-10-29 05:29:44,106 INFO L857 garLoopResultBuilder]: For program point L76-2(lines 76 79) no Hoare annotation was computed. [2021-10-29 05:29:44,106 INFO L857 garLoopResultBuilder]: For program point L43-2(line 43) no Hoare annotation was computed. [2021-10-29 05:29:44,107 INFO L853 garLoopResultBuilder]: At program point L43-3(lines 37 44) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (.cse2 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (.cse1 (= ULTIMATE.start_fmin_float_~y ULTIMATE.start_main_~y~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmin_float_#res|) .cse0 .cse1) (and (= ULTIMATE.start_fmin_float_~y ULTIMATE.start___fpclassify_float_~x) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x)) (= ULTIMATE.start_fmin_float_~y .cse2) .cse0 (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~y~0) .cse1) (and (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (not (fp.eq .cse2 .cse2)) .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq |ULTIMATE.start_fmin_float_#res| ULTIMATE.start_main_~x~0)))) [2021-10-29 05:29:44,110 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:29:44,111 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:29:44,138 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:29:44 BoogieIcfgContainer [2021-10-29 05:29:44,139 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:29:44,139 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:29:44,139 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:29:44,140 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:29:44,140 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:29:09" (3/4) ... [2021-10-29 05:29:44,143 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:29:44,156 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-10-29 05:29:44,157 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-10-29 05:29:44,158 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-29 05:29:44,158 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:29:44,182 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) [2021-10-29 05:29:44,183 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (aux-isnan_float(x) && !isnan_float(y)-aux && ((!~fp.eq~FLOAT(y, y) && 1bv32 == \result) || (0bv32 == \result && ~fp.eq~FLOAT(y, y)))) && !~fp.eq~FLOAT(x, x) [2021-10-29 05:29:44,183 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && !aux-isnan_float(x) && !isnan_float(y)-aux) && 1bv32 == \result) || (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && 0bv32 == \result) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x)) [2021-10-29 05:29:44,184 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && aux-!isnan_float(x) && isnan_float(y)-aux) && ((!~fp.eq~FLOAT(y, y) && 1bv32 == \result) || (0bv32 == \result && ~fp.eq~FLOAT(y, y)))) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x) [2021-10-29 05:29:44,184 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((0bv32 == \result && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == y) || (((((!~fp.eq~FLOAT(y, y) && x == x) && x == x) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) [2021-10-29 05:29:44,184 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((0bv32 == \result && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == y) || (((((((!~fp.eq~FLOAT(y, y) && x == x) && x == x) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !(0bv32 == \result)) && x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) [2021-10-29 05:29:44,185 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) && y == \result) && !~fp.eq~FLOAT(x, x)) && y == y) || (((((y == x && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y)) && y == y)) || ((((((!~fp.eq~FLOAT(y, y) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x)) [2021-10-29 05:29:44,185 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((0bv32 == \result && y == x) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == y) || ((((y == x && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && y == y) && 1bv32 == \result) [2021-10-29 05:29:44,185 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((0bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) && ~fp.eq~FLOAT(\result, x)) || (((((~fp.eq~FLOAT(y, y) && y == res) && y == \result) && !~fp.eq~FLOAT(x, x)) && y == y) && 1bv32 == \result)) || (((((((~fp.eq~FLOAT(res, y) && y == x) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y)) && y == y) && 1bv32 == \result) [2021-10-29 05:29:44,186 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((0bv32 == \result && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == y) && 1bv32 == \result) || ((((((y == x && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && y == y) && ~fp.eq~FLOAT(y, y)) && !(0bv32 == \result)) [2021-10-29 05:29:44,186 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((aux-isnan_float(x) && !isnan_float(y)-aux && ~fp.eq~FLOAT(res, y)) && 0bv32 == \result) && y == x) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y)) && y == y) || ((((((aux-isnan_float(x) && !isnan_float(y)-aux && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == res) && y == \result) && !~fp.eq~FLOAT(x, x)) && y == y) [2021-10-29 05:29:44,187 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((0bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) && ~fp.eq~FLOAT(\result, x)) || (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) [2021-10-29 05:29:44,187 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!~fp.eq~FLOAT(y, y) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x) [2021-10-29 05:29:44,211 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:29:44,211 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:29:44,213 INFO L168 Benchmark]: Toolchain (without parser) took 35768.06 ms. Allocated memory was 62.9 MB in the beginning and 113.2 MB in the end (delta: 50.3 MB). Free memory was 43.5 MB in the beginning and 67.9 MB in the end (delta: -24.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:29:44,213 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 62.9 MB. Free memory is still 44.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:29:44,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.06 ms. Allocated memory is still 62.9 MB. Free memory was 43.3 MB in the beginning and 45.6 MB in the end (delta: -2.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:29:44,214 INFO L168 Benchmark]: Boogie Procedure Inliner took 78.72 ms. Allocated memory is still 62.9 MB. Free memory was 45.6 MB in the beginning and 43.7 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:29:44,215 INFO L168 Benchmark]: Boogie Preprocessor took 36.22 ms. Allocated memory is still 62.9 MB. Free memory was 43.7 MB in the beginning and 42.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:29:44,215 INFO L168 Benchmark]: RCFGBuilder took 603.05 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 42.0 MB in the beginning and 59.0 MB in the end (delta: -17.1 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:29:44,216 INFO L168 Benchmark]: TraceAbstraction took 34693.03 ms. Allocated memory was 77.6 MB in the beginning and 113.2 MB in the end (delta: 35.7 MB). Free memory was 58.3 MB in the beginning and 73.2 MB in the end (delta: -14.8 MB). Peak memory consumption was 70.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:29:44,216 INFO L168 Benchmark]: Witness Printer took 71.98 ms. Allocated memory is still 113.2 MB. Free memory was 73.2 MB in the beginning and 67.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:29:44,218 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 62.9 MB. Free memory is still 44.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 279.06 ms. Allocated memory is still 62.9 MB. Free memory was 43.3 MB in the beginning and 45.6 MB in the end (delta: -2.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 78.72 ms. Allocated memory is still 62.9 MB. Free memory was 45.6 MB in the beginning and 43.7 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.22 ms. Allocated memory is still 62.9 MB. Free memory was 43.7 MB in the beginning and 42.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 603.05 ms. Allocated memory was 62.9 MB in the beginning and 77.6 MB in the end (delta: 14.7 MB). Free memory was 42.0 MB in the beginning and 59.0 MB in the end (delta: -17.1 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 34693.03 ms. Allocated memory was 77.6 MB in the beginning and 113.2 MB in the end (delta: 35.7 MB). Free memory was 58.3 MB in the beginning and 73.2 MB in the end (delta: -14.8 MB). Peak memory consumption was 70.4 MB. Max. memory is 16.1 GB. * Witness Printer took 71.98 ms. Allocated memory is still 113.2 MB. Free memory was 73.2 MB in the beginning and 67.9 MB in the end (delta: 5.2 MB). Peak memory consumption was 4.2 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 - PositiveResult [Line: 77]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 83]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 47 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 34.5s, OverallIterations: 19, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.8s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1146 SDtfs, 2600 SDslu, 4552 SDs, 0 SdLazy, 2015 SolverSat, 263 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1045 GetRequests, 774 SyntacticMatches, 6 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=7, InterpolantAutomatonStates: 211, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 19 MinimizatonAttempts, 578 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 14 PreInvPairs, 48 NumberOfFragments, 617 HoareAnnotationTreeSize, 14 FomulaSimplifications, 643151 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 14 FomulaSimplificationsInter, 19731 FormulaSimplificationTreeSizeReductionInter, 6.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 8.5s InterpolantComputationTime, 479 NumberOfCodeBlocks, 479 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 920 ConstructedInterpolants, 31 QuantifiedInterpolants, 3559 SizeOfPredicates, 145 NumberOfNonLiveVariables, 1646 ConjunctsInSsa, 188 ConjunctsInUnsatCore, 38 InterpolantComputations, 38 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((((0bv32 == \result && y == x) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == y) || ((((y == x && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && y == y) && 1bv32 == \result) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((((!~fp.eq~FLOAT(y, y) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((((((aux-isnan_float(x) && !isnan_float(y)-aux && ~fp.eq~FLOAT(res, y)) && 0bv32 == \result) && y == x) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y)) && y == y) || ((((((aux-isnan_float(x) && !isnan_float(y)-aux && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == res) && y == \result) && !~fp.eq~FLOAT(x, x)) && y == y) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && !aux-isnan_float(x) && !isnan_float(y)-aux) && 1bv32 == \result) || (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && 0bv32 == \result) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (((((((0bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) && ~fp.eq~FLOAT(\result, x)) || (!~fp.eq~FLOAT(x, x) && 1bv32 == \result) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: (((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) && y == \result) && !~fp.eq~FLOAT(x, x)) && y == y) || (((((y == x && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y)) && y == y)) || ((((((!~fp.eq~FLOAT(y, y) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x)) - InvariantResult [Line: 61]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: ((((((((0bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(res, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) && ~fp.eq~FLOAT(\result, x)) || (((((~fp.eq~FLOAT(y, y) && y == res) && y == \result) && !~fp.eq~FLOAT(x, x)) && y == y) && 1bv32 == \result)) || (((((((~fp.eq~FLOAT(res, y) && y == x) && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, y)) && y == y) && 1bv32 == \result) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: ((((0bv32 == \result && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == y) || (((((!~fp.eq~FLOAT(y, y) && x == x) && x == x) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((0bv32 == \result && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) && y == y) || (((((((!~fp.eq~FLOAT(y, y) && x == x) && x == x) && y == y) && ~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && !(0bv32 == \result)) && x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (aux-isnan_float(x) && !isnan_float(y)-aux && ((!~fp.eq~FLOAT(y, y) && 1bv32 == \result) || (0bv32 == \result && ~fp.eq~FLOAT(y, y)))) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((0bv32 == \result && ~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(x, x)) && !~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && y == y) && 1bv32 == \result) || ((((((y == x && !~fp.eq~FLOAT(x, x)) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && y == y) && ~fp.eq~FLOAT(y, y)) && !(0bv32 == \result)) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && aux-!isnan_float(x) && isnan_float(y)-aux) && ((!~fp.eq~FLOAT(y, y) && 1bv32 == \result) || (0bv32 == \result && ~fp.eq~FLOAT(y, y)))) && !aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(x, x) RESULT: Ultimate proved your program to be correct! [2021-10-29 05:29:44,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ae1f9ac5-c803-4330-bd61-0645119bc4ff/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...