./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 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/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_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS --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 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:51:54,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:51:54,683 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:51:54,729 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:51:54,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:51:54,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:51:54,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:51:54,741 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:51:54,742 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:51:54,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:51:54,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:51:54,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:51:54,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:51:54,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:51:54,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:51:54,750 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:51:54,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:51:54,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:51:54,762 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:51:54,765 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:51:54,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:51:54,772 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:51:54,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:51:54,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:51:54,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:51:54,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:51:54,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:51:54,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:51:54,781 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:51:54,782 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:51:54,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:51:54,793 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:51:54,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:51:54,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:51:54,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:51:54,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:51:54,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:51:54,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:51:54,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:51:54,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:51:54,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:51:54,802 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 06:51:54,827 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:51:54,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:51:54,828 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:51:54,828 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:51:54,829 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:51:54,829 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:51:54,829 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:51:54,830 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:51:54,830 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:51:54,830 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:51:54,830 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:51:54,831 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:51:54,831 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:51:54,831 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:51:54,831 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:51:54,831 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:51:54,832 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:51:54,832 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:51:54,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:51:54,833 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:51:54,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:51:54,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:51:54,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:51:54,834 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:51:54,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:51:54,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:51:54,834 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:51:54,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:51:54,835 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:51:54,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:51:54,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:51:54,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:51:54,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:51:54,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:51:54,836 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:51:54,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:51:54,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:51:54,837 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:51:54,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:51:54,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:51:54,837 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:51:54,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 [2022-11-19 06:51:55,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:51:55,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:51:55,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:51:55,159 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:51:55,160 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:51:55,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2022-11-19 06:51:55,255 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/data/738c3493d/fee0083a5af64a4ea8960c9969c67292/FLAGccdbb31fa [2022-11-19 06:51:55,734 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:51:55,734 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2022-11-19 06:51:55,746 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/data/738c3493d/fee0083a5af64a4ea8960c9969c67292/FLAGccdbb31fa [2022-11-19 06:51:56,100 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/data/738c3493d/fee0083a5af64a4ea8960c9969c67292 [2022-11-19 06:51:56,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:51:56,106 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:51:56,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:51:56,112 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:51:56,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:51:56,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:51:56" (1/1) ... [2022-11-19 06:51:56,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58ceba6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:56, skipping insertion in model container [2022-11-19 06:51:56,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:51:56" (1/1) ... [2022-11-19 06:51:56,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:51:56,147 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:51:56,382 WARN L234 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_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2022-11-19 06:51:56,387 WARN L234 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_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2022-11-19 06:51:56,388 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:51:56,396 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:51:56,420 WARN L234 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_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2022-11-19 06:51:56,421 WARN L234 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_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2022-11-19 06:51:56,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:51:56,436 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:51:56,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:56 WrapperNode [2022-11-19 06:51:56,436 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:51:56,437 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:51:56,438 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:51:56,438 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:51:56,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:56" (1/1) ... [2022-11-19 06:51:56,453 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:56" (1/1) ... [2022-11-19 06:51:56,472 INFO L138 Inliner]: procedures = 19, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 103 [2022-11-19 06:51:56,473 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:51:56,473 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:51:56,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:51:56,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:51:56,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:56" (1/1) ... [2022-11-19 06:51:56,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:56" (1/1) ... [2022-11-19 06:51:56,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:56" (1/1) ... [2022-11-19 06:51:56,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:56" (1/1) ... [2022-11-19 06:51:56,492 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:56" (1/1) ... [2022-11-19 06:51:56,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:56" (1/1) ... [2022-11-19 06:51:56,497 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:56" (1/1) ... [2022-11-19 06:51:56,498 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:56" (1/1) ... [2022-11-19 06:51:56,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:51:56,501 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:51:56,501 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:51:56,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:51:56,502 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:56" (1/1) ... [2022-11-19 06:51:56,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:51:56,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:51:56,540 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:51:56,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:51:56,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:51:56,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:51:56,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:51:56,590 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-11-19 06:51:56,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-11-19 06:51:56,590 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2022-11-19 06:51:56,590 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2022-11-19 06:51:56,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-19 06:51:56,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:51:56,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:51:56,591 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:51:56,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:51:56,703 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:51:56,705 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:51:57,030 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:51:57,093 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:51:57,094 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 06:51:57,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:51:57 BoogieIcfgContainer [2022-11-19 06:51:57,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:51:57,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:51:57,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:51:57,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:51:57,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:51:56" (1/3) ... [2022-11-19 06:51:57,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d98864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:51:57, skipping insertion in model container [2022-11-19 06:51:57,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:51:56" (2/3) ... [2022-11-19 06:51:57,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d98864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:51:57, skipping insertion in model container [2022-11-19 06:51:57,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:51:57" (3/3) ... [2022-11-19 06:51:57,107 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2022-11-19 06:51:57,126 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:51:57,126 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 06:51:57,195 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:51:57,202 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@f747eee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:51:57,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 06:51:57,206 INFO L276 IsEmpty]: Start isEmpty. Operand has 47 states, 32 states have (on average 1.40625) internal successors, (45), 34 states have internal predecessors, (45), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-19 06:51:57,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-19 06:51:57,215 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:57,216 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:57,217 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:57,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:57,224 INFO L85 PathProgramCache]: Analyzing trace with hash 92772046, now seen corresponding path program 1 times [2022-11-19 06:51:57,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:57,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466814035] [2022-11-19 06:51:57,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:57,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:57,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:57,571 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 06:51:57,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:57,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466814035] [2022-11-19 06:51:57,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466814035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:57,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:57,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:51:57,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665143654] [2022-11-19 06:51:57,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:57,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:51:57,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:57,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:51:57,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:51:57,619 INFO L87 Difference]: Start difference. First operand has 47 states, 32 states have (on average 1.40625) internal successors, (45), 34 states have internal predecessors, (45), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:51:57,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:57,740 INFO L93 Difference]: Finished difference Result 89 states and 125 transitions. [2022-11-19 06:51:57,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:51:57,743 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), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2022-11-19 06:51:57,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:57,750 INFO L225 Difference]: With dead ends: 89 [2022-11-19 06:51:57,750 INFO L226 Difference]: Without dead ends: 53 [2022-11-19 06:51:57,753 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:51:57,757 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 16 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:57,758 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 151 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:51:57,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-11-19 06:51:57,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 46. [2022-11-19 06:51:57,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.21875) internal successors, (39), 33 states have internal predecessors, (39), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-19 06:51:57,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 59 transitions. [2022-11-19 06:51:57,799 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 59 transitions. Word has length 24 [2022-11-19 06:51:57,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:57,799 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 59 transitions. [2022-11-19 06:51:57,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:51:57,800 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 59 transitions. [2022-11-19 06:51:57,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-19 06:51:57,801 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:57,802 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-19 06:51:57,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:51:57,802 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:57,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:57,803 INFO L85 PathProgramCache]: Analyzing trace with hash 291622722, now seen corresponding path program 1 times [2022-11-19 06:51:57,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:57,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130245238] [2022-11-19 06:51:57,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:57,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:57,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:57,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 06:51:57,918 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:57,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130245238] [2022-11-19 06:51:57,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130245238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:57,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:57,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:51:57,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507422664] [2022-11-19 06:51:57,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:57,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:57,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:57,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:57,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:57,930 INFO L87 Difference]: Start difference. First operand 46 states and 59 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-19 06:51:57,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:57,987 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2022-11-19 06:51:57,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:57,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 29 [2022-11-19 06:51:57,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:58,000 INFO L225 Difference]: With dead ends: 49 [2022-11-19 06:51:58,000 INFO L226 Difference]: Without dead ends: 47 [2022-11-19 06:51:58,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:58,002 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 0 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:58,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 99 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:51:58,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-19 06:51:58,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2022-11-19 06:51:58,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 33 states have (on average 1.2121212121212122) internal successors, (40), 34 states have internal predecessors, (40), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-19 06:51:58,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions. [2022-11-19 06:51:58,015 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 60 transitions. Word has length 29 [2022-11-19 06:51:58,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:58,021 INFO L495 AbstractCegarLoop]: Abstraction has 47 states and 60 transitions. [2022-11-19 06:51:58,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-19 06:51:58,021 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions. [2022-11-19 06:51:58,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-19 06:51:58,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:58,023 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-11-19 06:51:58,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:51:58,024 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:58,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:58,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1894378411, now seen corresponding path program 1 times [2022-11-19 06:51:58,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:58,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144135691] [2022-11-19 06:51:58,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:58,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:58,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:51:58,104 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 06:51:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 06:51:58,197 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 06:51:58,197 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 06:51:58,199 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-19 06:51:58,201 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-19 06:51:58,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 06:51:58,205 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-19 06:51:58,208 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:51:58,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:51:58 BoogieIcfgContainer [2022-11-19 06:51:58,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:51:58,238 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:51:58,238 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:51:58,238 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:51:58,239 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:51:57" (3/4) ... [2022-11-19 06:51:58,242 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 06:51:58,242 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:51:58,243 INFO L158 Benchmark]: Toolchain (without parser) took 2136.29ms. Allocated memory was 127.9MB in the beginning and 161.5MB in the end (delta: 33.6MB). Free memory was 90.6MB in the beginning and 122.1MB in the end (delta: -31.4MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. [2022-11-19 06:51:58,243 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 127.9MB. Free memory was 98.4MB in the beginning and 98.3MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:51:58,244 INFO L158 Benchmark]: CACSL2BoogieTranslator took 325.61ms. Allocated memory is still 127.9MB. Free memory was 90.2MB in the beginning and 101.2MB in the end (delta: -10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 06:51:58,244 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.38ms. Allocated memory is still 127.9MB. Free memory was 101.2MB in the beginning and 99.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:51:58,245 INFO L158 Benchmark]: Boogie Preprocessor took 27.19ms. Allocated memory is still 127.9MB. Free memory was 99.1MB in the beginning and 97.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:51:58,245 INFO L158 Benchmark]: RCFGBuilder took 595.59ms. Allocated memory is still 127.9MB. Free memory was 97.8MB in the beginning and 77.5MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-19 06:51:58,246 INFO L158 Benchmark]: TraceAbstraction took 1138.27ms. Allocated memory was 127.9MB in the beginning and 161.5MB in the end (delta: 33.6MB). Free memory was 76.8MB in the beginning and 123.1MB in the end (delta: -46.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:51:58,246 INFO L158 Benchmark]: Witness Printer took 4.14ms. Allocated memory is still 161.5MB. Free memory was 123.1MB in the beginning and 122.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:51:58,249 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 127.9MB. Free memory was 98.4MB in the beginning and 98.3MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 325.61ms. Allocated memory is still 127.9MB. Free memory was 90.2MB in the beginning and 101.2MB in the end (delta: -10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.38ms. Allocated memory is still 127.9MB. Free memory was 101.2MB in the beginning and 99.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.19ms. Allocated memory is still 127.9MB. Free memory was 99.1MB in the beginning and 97.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 595.59ms. Allocated memory is still 127.9MB. Free memory was 97.8MB in the beginning and 77.5MB in the end (delta: 20.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 1138.27ms. Allocated memory was 127.9MB in the beginning and 161.5MB in the end (delta: 33.6MB). Free memory was 76.8MB in the beginning and 123.1MB in the end (delta: -46.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.14ms. Allocated memory is still 161.5MB. Free memory was 123.1MB in the beginning and 122.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - 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(); [L70] CALL, EXPR isnan_float(x) VAL [\old(x)=4286578696] [L59] return x != x; [L70] RET, EXPR isnan_float(x) VAL [isnan_float(x)=1, x=4286578696] [L70] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, x=4286578696] [L70] CALL, EXPR isnan_float(y) VAL [\old(x)=4286578697] [L59] return x != x; [L70] RET, EXPR isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=4286578696, y=4286578697] [L70] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=4286578696, y=4286578697] [L70-L71] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) VAL [(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))=1, isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, x=4286578696, y=4286578697] [L70-L71] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L73] CALL, EXPR fmin_float(x, y) [L38] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578696] [L15] __uint32_t w; VAL [\old(x)=4286578696, x=4286578696] [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] RET, EXPR __fpclassify_float(x) VAL [\old(x)=4286578696, \old(y)=4286578697, __fpclassify_float(x)=0, x=4286578696, y=4286578697] [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; VAL [\old(x)=4286578696, \old(y)=4286578697, \result=4286578697, x=4286578696, y=4286578697] [L73] RET, EXPR fmin_float(x, y) [L73] float res = fmin_float(x, y); [L76] CALL, EXPR isnan_float(x) VAL [\old(x)=4286578696] [L59] return x != x; [L76] RET, EXPR isnan_float(x) VAL [isnan_float(x)=1, res=4286578697, x=4286578696, y=4286578697] [L76] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, res=4286578697, x=4286578696, y=4286578697] [L76] CALL, EXPR isnan_float(y) VAL [\old(x)=4286578697] [L59] return x != x; [L76] RET, EXPR isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, res=4286578697, x=4286578696, y=4286578697] [L76] EXPR isnan_float(x) && !isnan_float(y) VAL [isnan_float(x)=1, isnan_float(x) && !isnan_float(y)=1, isnan_float(y)=0, res=4286578697, x=4286578696, y=4286578697] [L76] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L77] reach_error() VAL [res=4286578697, x=4286578696, y=4286578697] - 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 3 procedures, 47 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16 mSDsluCounter, 250 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 140 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 110 mSDtfsCounter, 46 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 54 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 8/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-19 06:51:58,271 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/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_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS --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 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:52:00,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:52:00,401 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:52:00,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:52:00,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:52:00,427 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:52:00,429 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:52:00,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:52:00,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:52:00,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:52:00,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:52:00,436 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:52:00,436 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:52:00,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:52:00,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:52:00,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:52:00,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:52:00,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:52:00,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:52:00,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:52:00,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:52:00,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:52:00,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:52:00,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:52:00,453 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:52:00,454 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:52:00,454 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:52:00,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:52:00,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:52:00,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:52:00,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:52:00,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:52:00,459 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:52:00,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:52:00,461 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:52:00,461 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:52:00,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:52:00,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:52:00,462 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:52:00,463 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:52:00,464 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:52:00,465 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 06:52:00,488 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:52:00,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:52:00,489 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:52:00,490 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:52:00,490 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:52:00,491 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:52:00,491 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:52:00,491 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:52:00,492 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:52:00,492 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:52:00,492 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:52:00,492 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:52:00,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:52:00,493 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 06:52:00,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 06:52:00,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:52:00,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:52:00,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:52:00,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:52:00,495 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 06:52:00,495 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 06:52:00,495 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 06:52:00,495 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 06:52:00,496 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:52:00,496 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:52:00,496 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:52:00,496 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:52:00,497 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 06:52:00,497 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:52:00,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:52:00,497 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:52:00,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:52:00,498 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:52:00,498 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 06:52:00,498 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 06:52:00,498 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:52:00,499 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:52:00,499 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 06:52:00,499 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_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7acfe881669b731d03fc8aee9db955b71d947923db9c9de4e28fcb386b44b191 [2022-11-19 06:52:00,851 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:52:00,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:52:00,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:52:00,876 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:52:00,881 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:52:00,883 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2022-11-19 06:52:00,947 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/data/6a89c1b14/f8b4daea5177450bba14f642f614ad33/FLAG4fcb0fddc [2022-11-19 06:52:01,446 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:52:01,446 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/sv-benchmarks/c/float-newlib/float_req_bl_1231.c [2022-11-19 06:52:01,453 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/data/6a89c1b14/f8b4daea5177450bba14f642f614ad33/FLAG4fcb0fddc [2022-11-19 06:52:01,834 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/data/6a89c1b14/f8b4daea5177450bba14f642f614ad33 [2022-11-19 06:52:01,841 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:52:01,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:52:01,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:52:01,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:52:01,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:52:01,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:52:01" (1/1) ... [2022-11-19 06:52:01,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4baa3bba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:01, skipping insertion in model container [2022-11-19 06:52:01,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:52:01" (1/1) ... [2022-11-19 06:52:01,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:52:01,875 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:52:02,042 WARN L234 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_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2022-11-19 06:52:02,051 WARN L234 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_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2022-11-19 06:52:02,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:52:02,075 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:52:02,135 WARN L234 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_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1835,1848] [2022-11-19 06:52:02,159 WARN L234 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_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/sv-benchmarks/c/float-newlib/float_req_bl_1231.c[1994,2007] [2022-11-19 06:52:02,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:52:02,189 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:52:02,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:02 WrapperNode [2022-11-19 06:52:02,189 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:52:02,190 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:52:02,191 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:52:02,191 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:52:02,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:02" (1/1) ... [2022-11-19 06:52:02,225 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:02" (1/1) ... [2022-11-19 06:52:02,242 INFO L138 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 94 [2022-11-19 06:52:02,243 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:52:02,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:52:02,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:52:02,244 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:52:02,252 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:02" (1/1) ... [2022-11-19 06:52:02,252 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:02" (1/1) ... [2022-11-19 06:52:02,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:02" (1/1) ... [2022-11-19 06:52:02,257 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:02" (1/1) ... [2022-11-19 06:52:02,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:02" (1/1) ... [2022-11-19 06:52:02,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:02" (1/1) ... [2022-11-19 06:52:02,272 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:02" (1/1) ... [2022-11-19 06:52:02,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:02" (1/1) ... [2022-11-19 06:52:02,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:52:02,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:52:02,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:52:02,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:52:02,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:02" (1/1) ... [2022-11-19 06:52:02,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:52:02,315 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:02,326 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:52:02,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:52:02,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:52:02,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 06:52:02,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:52:02,369 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-11-19 06:52:02,369 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-11-19 06:52:02,370 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2022-11-19 06:52:02,370 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2022-11-19 06:52:02,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-19 06:52:02,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:52:02,370 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:52:02,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-11-19 06:52:02,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:52:02,452 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:52:02,454 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:52:02,704 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:52:02,726 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:52:02,726 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-19 06:52:02,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:52:02 BoogieIcfgContainer [2022-11-19 06:52:02,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:52:02,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:52:02,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:52:02,735 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:52:02,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:52:01" (1/3) ... [2022-11-19 06:52:02,736 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7719cf64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:52:02, skipping insertion in model container [2022-11-19 06:52:02,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:52:02" (2/3) ... [2022-11-19 06:52:02,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7719cf64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:52:02, skipping insertion in model container [2022-11-19 06:52:02,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:52:02" (3/3) ... [2022-11-19 06:52:02,744 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1231.c [2022-11-19 06:52:02,779 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:52:02,783 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-19 06:52:02,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:52:02,887 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@508aced, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:52:02,887 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-19 06:52:02,893 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 40 states have internal predecessors, (56), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-19 06:52:02,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-11-19 06:52:02,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:02,905 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:02,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:02,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:02,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1842866032, now seen corresponding path program 1 times [2022-11-19 06:52:02,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:02,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1592848528] [2022-11-19 06:52:02,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:02,929 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:02,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:02,935 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:02,938 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-19 06:52:03,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:03,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 06:52:03,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:03,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:03,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:03,117 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:03,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1592848528] [2022-11-19 06:52:03,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1592848528] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:03,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:03,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:52:03,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395636414] [2022-11-19 06:52:03,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:03,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 06:52:03,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:03,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 06:52:03,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:52:03,165 INFO L87 Difference]: Start difference. First operand has 53 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 40 states have internal predecessors, (56), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:52:03,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:03,196 INFO L93 Difference]: Finished difference Result 89 states and 128 transitions. [2022-11-19 06:52:03,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 06:52:03,198 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 27 [2022-11-19 06:52:03,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:03,213 INFO L225 Difference]: With dead ends: 89 [2022-11-19 06:52:03,213 INFO L226 Difference]: Without dead ends: 49 [2022-11-19 06:52:03,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 06:52:03,231 INFO L413 NwaCegarLoop]: 72 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:03,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:52:03,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-19 06:52:03,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-11-19 06:52:03,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 35 states have (on average 1.3428571428571427) internal successors, (47), 36 states have internal predecessors, (47), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-19 06:52:03,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 67 transitions. [2022-11-19 06:52:03,280 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 67 transitions. Word has length 27 [2022-11-19 06:52:03,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:03,282 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 67 transitions. [2022-11-19 06:52:03,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:52:03,282 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 67 transitions. [2022-11-19 06:52:03,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-19 06:52:03,285 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:03,285 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:03,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:03,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:03,495 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:03,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:03,497 INFO L85 PathProgramCache]: Analyzing trace with hash -207460078, now seen corresponding path program 1 times [2022-11-19 06:52:03,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:03,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1360317199] [2022-11-19 06:52:03,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:03,498 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:03,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:03,500 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:03,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-19 06:52:03,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:03,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:52:03,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:03,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 06:52:03,697 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:03,698 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:03,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1360317199] [2022-11-19 06:52:03,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1360317199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:03,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:03,699 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:52:03,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461982279] [2022-11-19 06:52:03,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:03,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:52:03,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:03,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:52:03,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:03,702 INFO L87 Difference]: Start difference. First operand 49 states and 67 transitions. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:52:03,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:03,765 INFO L93 Difference]: Finished difference Result 92 states and 125 transitions. [2022-11-19 06:52:03,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 06:52:03,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 28 [2022-11-19 06:52:03,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:03,768 INFO L225 Difference]: With dead ends: 92 [2022-11-19 06:52:03,768 INFO L226 Difference]: Without dead ends: 58 [2022-11-19 06:52:03,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:52:03,771 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 16 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:03,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 182 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:52:03,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-19 06:52:03,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2022-11-19 06:52:03,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 38 states have internal predecessors, (49), 10 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2022-11-19 06:52:03,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 69 transitions. [2022-11-19 06:52:03,792 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 69 transitions. Word has length 28 [2022-11-19 06:52:03,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:03,795 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 69 transitions. [2022-11-19 06:52:03,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-19 06:52:03,796 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 69 transitions. [2022-11-19 06:52:03,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-11-19 06:52:03,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:03,797 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-19 06:52:03,810 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:04,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:04,003 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:04,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:04,004 INFO L85 PathProgramCache]: Analyzing trace with hash 318152461, now seen corresponding path program 1 times [2022-11-19 06:52:04,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:04,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111244520] [2022-11-19 06:52:04,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:04,005 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:04,005 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:04,011 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:04,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-19 06:52:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:04,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:52:04,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:04,140 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 06:52:04,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:04,141 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:04,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111244520] [2022-11-19 06:52:04,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111244520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:04,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:04,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:52:04,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656786411] [2022-11-19 06:52:04,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:04,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:52:04,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:04,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:52:04,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:04,145 INFO L87 Difference]: Start difference. First operand 51 states and 69 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 06:52:04,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:04,222 INFO L93 Difference]: Finished difference Result 74 states and 98 transitions. [2022-11-19 06:52:04,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:52:04,223 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2022-11-19 06:52:04,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:04,226 INFO L225 Difference]: With dead ends: 74 [2022-11-19 06:52:04,226 INFO L226 Difference]: Without dead ends: 54 [2022-11-19 06:52:04,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:04,228 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:04,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 189 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:52:04,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2022-11-19 06:52:04,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2022-11-19 06:52:04,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-19 06:52:04,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2022-11-19 06:52:04,241 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 33 [2022-11-19 06:52:04,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:04,241 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2022-11-19 06:52:04,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 06:52:04,242 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2022-11-19 06:52:04,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-11-19 06:52:04,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:04,244 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-19 06:52:04,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:04,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:04,459 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:04,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:04,460 INFO L85 PathProgramCache]: Analyzing trace with hash 810873816, now seen corresponding path program 1 times [2022-11-19 06:52:04,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:04,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [438211377] [2022-11-19 06:52:04,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:04,462 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:04,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:04,463 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:04,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-19 06:52:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:04,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:52:04,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:04,597 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 06:52:04,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:04,598 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:04,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [438211377] [2022-11-19 06:52:04,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [438211377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:04,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:04,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:52:04,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171231255] [2022-11-19 06:52:04,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:04,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:52:04,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:04,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:52:04,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:04,602 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 06:52:04,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:04,666 INFO L93 Difference]: Finished difference Result 77 states and 102 transitions. [2022-11-19 06:52:04,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:52:04,667 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 34 [2022-11-19 06:52:04,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:04,669 INFO L225 Difference]: With dead ends: 77 [2022-11-19 06:52:04,669 INFO L226 Difference]: Without dead ends: 57 [2022-11-19 06:52:04,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:04,671 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:04,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 198 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 06:52:04,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-19 06:52:04,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2022-11-19 06:52:04,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-19 06:52:04,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2022-11-19 06:52:04,681 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 34 [2022-11-19 06:52:04,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:04,682 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2022-11-19 06:52:04,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 06:52:04,682 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2022-11-19 06:52:04,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-11-19 06:52:04,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:04,684 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-19 06:52:04,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:04,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:04,898 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:04,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:04,899 INFO L85 PathProgramCache]: Analyzing trace with hash 2026721905, now seen corresponding path program 1 times [2022-11-19 06:52:04,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:04,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194753029] [2022-11-19 06:52:04,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:04,902 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:04,902 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:04,905 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:04,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-19 06:52:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:04,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:52:04,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:05,036 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 06:52:05,036 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:05,036 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:05,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194753029] [2022-11-19 06:52:05,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194753029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:05,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:05,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:52:05,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165572316] [2022-11-19 06:52:05,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:05,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:52:05,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:05,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:52:05,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:05,040 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 06:52:05,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:05,233 INFO L93 Difference]: Finished difference Result 77 states and 102 transitions. [2022-11-19 06:52:05,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:52:05,235 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-11-19 06:52:05,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:05,236 INFO L225 Difference]: With dead ends: 77 [2022-11-19 06:52:05,236 INFO L226 Difference]: Without dead ends: 57 [2022-11-19 06:52:05,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:05,238 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:05,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 198 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 06:52:05,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-19 06:52:05,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2022-11-19 06:52:05,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-19 06:52:05,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2022-11-19 06:52:05,246 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 35 [2022-11-19 06:52:05,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:05,247 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2022-11-19 06:52:05,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 06:52:05,247 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2022-11-19 06:52:05,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-19 06:52:05,248 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:05,249 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-19 06:52:05,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:05,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:05,463 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:05,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:05,463 INFO L85 PathProgramCache]: Analyzing trace with hash -110305028, now seen corresponding path program 1 times [2022-11-19 06:52:05,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:05,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302563159] [2022-11-19 06:52:05,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:05,464 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:05,464 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:05,465 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:05,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-19 06:52:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:05,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:52:05,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:05,589 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 06:52:05,589 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:05,590 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:05,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302563159] [2022-11-19 06:52:05,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302563159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:05,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:05,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:52:05,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092069665] [2022-11-19 06:52:05,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:05,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:52:05,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:05,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:52:05,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:05,601 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 06:52:05,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:05,645 INFO L93 Difference]: Finished difference Result 77 states and 102 transitions. [2022-11-19 06:52:05,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:52:05,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 36 [2022-11-19 06:52:05,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:05,647 INFO L225 Difference]: With dead ends: 77 [2022-11-19 06:52:05,647 INFO L226 Difference]: Without dead ends: 57 [2022-11-19 06:52:05,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:05,649 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 0 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:05,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 198 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:52:05,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-19 06:52:05,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2022-11-19 06:52:05,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.3076923076923077) internal successors, (51), 40 states have internal predecessors, (51), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-19 06:52:05,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 73 transitions. [2022-11-19 06:52:05,657 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 73 transitions. Word has length 36 [2022-11-19 06:52:05,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:05,658 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 73 transitions. [2022-11-19 06:52:05,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-19 06:52:05,658 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 73 transitions. [2022-11-19 06:52:05,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-19 06:52:05,659 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:05,659 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 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] [2022-11-19 06:52:05,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:05,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:05,873 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:05,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:05,874 INFO L85 PathProgramCache]: Analyzing trace with hash -403708035, now seen corresponding path program 1 times [2022-11-19 06:52:05,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:05,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459982005] [2022-11-19 06:52:05,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:05,874 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:05,875 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:05,876 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:05,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-19 06:52:05,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:05,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 06:52:05,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:06,316 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 06:52:06,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:06,624 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-19 06:52:06,624 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:06,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459982005] [2022-11-19 06:52:06,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459982005] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:06,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1557303804] [2022-11-19 06:52:06,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:06,625 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:52:06,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:52:06,633 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:52:06,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-11-19 06:52:06,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:06,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:52:06,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:06,839 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 06:52:06,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:06,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1557303804] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:06,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:52:06,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 9] total 14 [2022-11-19 06:52:06,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961089633] [2022-11-19 06:52:06,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:06,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:52:06,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:06,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:52:06,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-19 06:52:06,847 INFO L87 Difference]: Start difference. First operand 54 states and 73 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-19 06:52:06,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:06,868 INFO L93 Difference]: Finished difference Result 57 states and 76 transitions. [2022-11-19 06:52:06,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:52:06,869 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), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 36 [2022-11-19 06:52:06,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:06,871 INFO L225 Difference]: With dead ends: 57 [2022-11-19 06:52:06,871 INFO L226 Difference]: Without dead ends: 55 [2022-11-19 06:52:06,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-19 06:52:06,873 INFO L413 NwaCegarLoop]: 66 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:06,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:52:06,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2022-11-19 06:52:06,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2022-11-19 06:52:06,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 40 states have (on average 1.3) internal successors, (52), 41 states have internal predecessors, (52), 10 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2022-11-19 06:52:06,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 74 transitions. [2022-11-19 06:52:06,897 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 74 transitions. Word has length 36 [2022-11-19 06:52:06,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:06,899 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 74 transitions. [2022-11-19 06:52:06,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-19 06:52:06,900 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 74 transitions. [2022-11-19 06:52:06,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-19 06:52:06,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:06,904 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-11-19 06:52:06,912 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2022-11-19 06:52:07,115 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-11-19 06:52:07,307 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:07,307 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:07,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:07,308 INFO L85 PathProgramCache]: Analyzing trace with hash -987503231, now seen corresponding path program 1 times [2022-11-19 06:52:07,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:07,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136728451] [2022-11-19 06:52:07,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:07,309 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:07,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:07,310 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:07,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-19 06:52:07,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:07,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 06:52:07,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:07,807 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 06:52:07,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:08,207 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 06:52:08,208 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:08,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136728451] [2022-11-19 06:52:08,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [136728451] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:08,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1226868043] [2022-11-19 06:52:08,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:08,208 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:52:08,209 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:52:08,210 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:52:08,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2022-11-19 06:52:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:08,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 06:52:08,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:08,702 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 06:52:08,702 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:08,838 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 06:52:08,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1226868043] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:08,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1768700736] [2022-11-19 06:52:08,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:08,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:08,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:08,847 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:52:08,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-19 06:52:08,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:08,927 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-19 06:52:08,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:09,341 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 06:52:09,341 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:09,703 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 06:52:09,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1768700736] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-19 06:52:09,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 5 imperfect interpolant sequences. [2022-11-19 06:52:09,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10, 10, 9, 9, 14] total 26 [2022-11-19 06:52:09,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7847509] [2022-11-19 06:52:09,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:09,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 06:52:09,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:09,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 06:52:09,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=538, Unknown=0, NotChecked=0, Total=650 [2022-11-19 06:52:09,706 INFO L87 Difference]: Start difference. First operand 55 states and 74 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-19 06:52:10,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:10,498 INFO L93 Difference]: Finished difference Result 73 states and 97 transitions. [2022-11-19 06:52:10,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 06:52:10,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 41 [2022-11-19 06:52:10,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:10,500 INFO L225 Difference]: With dead ends: 73 [2022-11-19 06:52:10,500 INFO L226 Difference]: Without dead ends: 71 [2022-11-19 06:52:10,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=155, Invalid=837, Unknown=0, NotChecked=0, Total=992 [2022-11-19 06:52:10,501 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 53 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:10,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 296 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 06:52:10,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-19 06:52:10,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2022-11-19 06:52:10,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 44 states have (on average 1.2954545454545454) internal successors, (57), 45 states have internal predecessors, (57), 12 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-19 06:52:10,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 83 transitions. [2022-11-19 06:52:10,509 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 83 transitions. Word has length 41 [2022-11-19 06:52:10,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:10,509 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 83 transitions. [2022-11-19 06:52:10,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-19 06:52:10,510 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 83 transitions. [2022-11-19 06:52:10,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-19 06:52:10,511 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:10,511 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-11-19 06:52:10,514 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:10,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:10,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:11,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:11,115 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:11,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:11,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1731684142, now seen corresponding path program 1 times [2022-11-19 06:52:11,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:11,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1176488083] [2022-11-19 06:52:11,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:11,116 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:11,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:11,117 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:11,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-19 06:52:11,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:11,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 06:52:11,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:11,381 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 06:52:11,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:11,624 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 06:52:11,624 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:11,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1176488083] [2022-11-19 06:52:11,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1176488083] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:11,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [486359155] [2022-11-19 06:52:11,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:11,625 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:52:11,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:52:11,627 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:52:11,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-19 06:52:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:11,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:52:11,823 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:11,842 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 06:52:11,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:11,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [486359155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:11,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 06:52:11,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8, 9] total 14 [2022-11-19 06:52:11,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121815622] [2022-11-19 06:52:11,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:11,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:52:11,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:11,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:52:11,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-19 06:52:11,846 INFO L87 Difference]: Start difference. First operand 61 states and 83 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-19 06:52:11,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:11,862 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2022-11-19 06:52:11,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:52:11,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 43 [2022-11-19 06:52:11,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:11,865 INFO L225 Difference]: With dead ends: 64 [2022-11-19 06:52:11,866 INFO L226 Difference]: Without dead ends: 61 [2022-11-19 06:52:11,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-11-19 06:52:11,869 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 0 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:11,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 128 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:52:11,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2022-11-19 06:52:11,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2022-11-19 06:52:11,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 44 states have (on average 1.2727272727272727) internal successors, (56), 45 states have internal predecessors, (56), 12 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (14), 13 states have call predecessors, (14), 12 states have call successors, (14) [2022-11-19 06:52:11,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 82 transitions. [2022-11-19 06:52:11,885 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 82 transitions. Word has length 43 [2022-11-19 06:52:11,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:11,885 INFO L495 AbstractCegarLoop]: Abstraction has 61 states and 82 transitions. [2022-11-19 06:52:11,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-19 06:52:11,886 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 82 transitions. [2022-11-19 06:52:11,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-19 06:52:11,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:11,887 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 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] [2022-11-19 06:52:11,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:12,098 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-11-19 06:52:12,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:12,290 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:12,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:12,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1178252102, now seen corresponding path program 1 times [2022-11-19 06:52:12,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:12,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [284996996] [2022-11-19 06:52:12,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:12,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:12,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:12,293 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:12,295 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-11-19 06:52:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:12,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:52:12,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:12,393 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 06:52:12,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:12,393 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:12,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [284996996] [2022-11-19 06:52:12,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [284996996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:12,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:12,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:52:12,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664607713] [2022-11-19 06:52:12,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:12,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:52:12,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:12,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:52:12,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:12,396 INFO L87 Difference]: Start difference. First operand 61 states and 82 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 06:52:12,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:12,439 INFO L93 Difference]: Finished difference Result 85 states and 111 transitions. [2022-11-19 06:52:12,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:52:12,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 46 [2022-11-19 06:52:12,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:12,441 INFO L225 Difference]: With dead ends: 85 [2022-11-19 06:52:12,441 INFO L226 Difference]: Without dead ends: 64 [2022-11-19 06:52:12,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:12,442 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 0 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:12,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 186 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:52:12,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-19 06:52:12,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-11-19 06:52:12,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 47 states have internal predecessors, (58), 12 states have call successors, (12), 2 states have call predecessors, (12), 4 states have return successors, (16), 14 states have call predecessors, (16), 12 states have call successors, (16) [2022-11-19 06:52:12,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 86 transitions. [2022-11-19 06:52:12,449 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 86 transitions. Word has length 46 [2022-11-19 06:52:12,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:12,450 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 86 transitions. [2022-11-19 06:52:12,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 06:52:12,450 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 86 transitions. [2022-11-19 06:52:12,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-19 06:52:12,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:12,461 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 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] [2022-11-19 06:52:12,487 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-11-19 06:52:12,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:12,675 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:12,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:12,676 INFO L85 PathProgramCache]: Analyzing trace with hash -101611576, now seen corresponding path program 1 times [2022-11-19 06:52:12,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:12,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071959047] [2022-11-19 06:52:12,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:12,677 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:12,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:12,677 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:12,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-19 06:52:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:12,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 21 conjunts are in the unsatisfiable core [2022-11-19 06:52:12,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:14,266 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-19 06:52:14,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:15,594 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-19 06:52:15,594 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:15,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071959047] [2022-11-19 06:52:15,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071959047] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:15,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1139070716] [2022-11-19 06:52:15,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:15,595 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:52:15,595 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:52:15,599 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:52:15,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-19 06:52:15,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:15,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-19 06:52:15,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:16,039 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 06:52:16,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:16,723 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-19 06:52:16,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1139070716] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:16,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760254881] [2022-11-19 06:52:16,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:16,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:16,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:16,727 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:52:16,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-19 06:52:16,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:16,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-19 06:52:16,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:17,662 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 06:52:17,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:19,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760254881] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:52:19,028 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-19 06:52:19,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 10, 10, 11] total 33 [2022-11-19 06:52:19,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755538876] [2022-11-19 06:52:19,028 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-19 06:52:19,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-19 06:52:19,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:19,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-19 06:52:19,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=1422, Unknown=0, NotChecked=0, Total=1560 [2022-11-19 06:52:19,031 INFO L87 Difference]: Start difference. First operand 64 states and 86 transitions. Second operand has 33 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 27 states have internal predecessors, (78), 12 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (25), 15 states have call predecessors, (25), 12 states have call successors, (25) [2022-11-19 06:52:23,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:23,500 INFO L93 Difference]: Finished difference Result 174 states and 232 transitions. [2022-11-19 06:52:23,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-19 06:52:23,501 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 27 states have internal predecessors, (78), 12 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (25), 15 states have call predecessors, (25), 12 states have call successors, (25) Word has length 46 [2022-11-19 06:52:23,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:23,502 INFO L225 Difference]: With dead ends: 174 [2022-11-19 06:52:23,502 INFO L226 Difference]: Without dead ends: 136 [2022-11-19 06:52:23,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 474 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=441, Invalid=2639, Unknown=0, NotChecked=0, Total=3080 [2022-11-19 06:52:23,505 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 344 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 1306 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 1463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:23,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 983 Invalid, 1463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1306 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-19 06:52:23,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-11-19 06:52:23,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 77. [2022-11-19 06:52:23,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 54 states have internal predecessors, (70), 16 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (23), 20 states have call predecessors, (23), 16 states have call successors, (23) [2022-11-19 06:52:23,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 109 transitions. [2022-11-19 06:52:23,515 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 109 transitions. Word has length 46 [2022-11-19 06:52:23,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:23,515 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 109 transitions. [2022-11-19 06:52:23,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.5161290322580645) internal successors, (78), 27 states have internal predecessors, (78), 12 states have call successors, (22), 2 states have call predecessors, (22), 6 states have return successors, (25), 15 states have call predecessors, (25), 12 states have call successors, (25) [2022-11-19 06:52:23,516 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 109 transitions. [2022-11-19 06:52:23,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-19 06:52:23,517 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:23,517 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 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] [2022-11-19 06:52:23,531 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:23,733 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:23,935 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:24,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:24,131 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:24,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:24,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1695459100, now seen corresponding path program 1 times [2022-11-19 06:52:24,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:24,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [123108420] [2022-11-19 06:52:24,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:24,132 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:24,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:24,133 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:24,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-19 06:52:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:24,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:52:24,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:24,263 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 06:52:24,263 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:24,263 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:24,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [123108420] [2022-11-19 06:52:24,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [123108420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:24,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:24,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:52:24,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8685509] [2022-11-19 06:52:24,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:24,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:52:24,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:24,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:52:24,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:24,269 INFO L87 Difference]: Start difference. First operand 77 states and 109 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 06:52:24,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:24,319 INFO L93 Difference]: Finished difference Result 102 states and 142 transitions. [2022-11-19 06:52:24,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:52:24,320 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 48 [2022-11-19 06:52:24,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:24,321 INFO L225 Difference]: With dead ends: 102 [2022-11-19 06:52:24,322 INFO L226 Difference]: Without dead ends: 81 [2022-11-19 06:52:24,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:24,323 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 0 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:24,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 195 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:52:24,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2022-11-19 06:52:24,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 79. [2022-11-19 06:52:24,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 56 states have (on average 1.2678571428571428) internal successors, (71), 56 states have internal predecessors, (71), 16 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (27), 20 states have call predecessors, (27), 16 states have call successors, (27) [2022-11-19 06:52:24,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 114 transitions. [2022-11-19 06:52:24,339 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 114 transitions. Word has length 48 [2022-11-19 06:52:24,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:24,339 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 114 transitions. [2022-11-19 06:52:24,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 06:52:24,341 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 114 transitions. [2022-11-19 06:52:24,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-19 06:52:24,344 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:24,345 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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, 1, 1, 1] [2022-11-19 06:52:24,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:24,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:24,547 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:24,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:24,547 INFO L85 PathProgramCache]: Analyzing trace with hash -754173183, now seen corresponding path program 1 times [2022-11-19 06:52:24,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:24,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [699516818] [2022-11-19 06:52:24,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:24,548 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:24,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:24,549 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:24,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-19 06:52:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:24,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 06:52:24,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:24,836 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 06:52:24,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:25,383 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 06:52:25,384 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:25,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [699516818] [2022-11-19 06:52:25,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [699516818] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:25,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1184680861] [2022-11-19 06:52:25,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:25,384 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:52:25,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:52:25,385 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:52:25,387 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2022-11-19 06:52:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:25,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 06:52:25,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:26,021 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 06:52:26,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:26,474 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 06:52:26,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1184680861] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:26,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421820204] [2022-11-19 06:52:26,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:26,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:26,475 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:26,476 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:52:26,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-19 06:52:26,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:26,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 06:52:26,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:26,696 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 06:52:26,696 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:26,916 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 06:52:26,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421820204] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:26,917 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:52:26,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9, 10, 8, 9] total 22 [2022-11-19 06:52:26,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250146951] [2022-11-19 06:52:26,917 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:52:26,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-19 06:52:26,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:26,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-19 06:52:26,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2022-11-19 06:52:26,919 INFO L87 Difference]: Start difference. First operand 79 states and 114 transitions. Second operand has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 15 states have internal predecessors, (58), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (18), 11 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-19 06:52:29,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-19 06:52:30,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:30,716 INFO L93 Difference]: Finished difference Result 146 states and 205 transitions. [2022-11-19 06:52:30,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-19 06:52:30,717 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 15 states have internal predecessors, (58), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (18), 11 states have call predecessors, (18), 4 states have call successors, (18) Word has length 48 [2022-11-19 06:52:30,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:30,719 INFO L225 Difference]: With dead ends: 146 [2022-11-19 06:52:30,719 INFO L226 Difference]: Without dead ends: 120 [2022-11-19 06:52:30,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=220, Invalid=1112, Unknown=0, NotChecked=0, Total=1332 [2022-11-19 06:52:30,720 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 186 mSDsluCounter, 894 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 82 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:30,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 967 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 737 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-11-19 06:52:30,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2022-11-19 06:52:30,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 99. [2022-11-19 06:52:30,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 70 states have (on average 1.2142857142857142) internal successors, (85), 70 states have internal predecessors, (85), 22 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (36), 26 states have call predecessors, (36), 22 states have call successors, (36) [2022-11-19 06:52:30,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 143 transitions. [2022-11-19 06:52:30,744 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 143 transitions. Word has length 48 [2022-11-19 06:52:30,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:30,745 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 143 transitions. [2022-11-19 06:52:30,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.6363636363636362) internal successors, (58), 15 states have internal predecessors, (58), 4 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (18), 11 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-19 06:52:30,746 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 143 transitions. [2022-11-19 06:52:30,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-19 06:52:30,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:30,748 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 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] [2022-11-19 06:52:30,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (21)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:30,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:31,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:31,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:31,353 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:31,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:31,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1891599591, now seen corresponding path program 1 times [2022-11-19 06:52:31,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:31,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886638048] [2022-11-19 06:52:31,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:31,354 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:31,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:31,355 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:31,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-19 06:52:31,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:31,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 06:52:31,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:31,643 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 06:52:31,644 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:31,644 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:31,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886638048] [2022-11-19 06:52:31,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [886638048] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:31,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:31,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 06:52:31,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837332597] [2022-11-19 06:52:31,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:31,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 06:52:31,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:31,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 06:52:31,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-19 06:52:31,645 INFO L87 Difference]: Start difference. First operand 99 states and 143 transitions. Second operand has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-19 06:52:32,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:32,665 INFO L93 Difference]: Finished difference Result 165 states and 228 transitions. [2022-11-19 06:52:32,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 06:52:32,666 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 48 [2022-11-19 06:52:32,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:32,668 INFO L225 Difference]: With dead ends: 165 [2022-11-19 06:52:32,668 INFO L226 Difference]: Without dead ends: 115 [2022-11-19 06:52:32,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-11-19 06:52:32,669 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 53 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:32,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 397 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 06:52:32,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-11-19 06:52:32,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 99. [2022-11-19 06:52:32,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 70 states have (on average 1.2) internal successors, (84), 70 states have internal predecessors, (84), 22 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (36), 26 states have call predecessors, (36), 22 states have call successors, (36) [2022-11-19 06:52:32,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 142 transitions. [2022-11-19 06:52:32,681 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 142 transitions. Word has length 48 [2022-11-19 06:52:32,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:32,681 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 142 transitions. [2022-11-19 06:52:32,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.375) internal successors, (27), 6 states have internal predecessors, (27), 3 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-19 06:52:32,682 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 142 transitions. [2022-11-19 06:52:32,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-19 06:52:32,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:32,683 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 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] [2022-11-19 06:52:32,697 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-11-19 06:52:32,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:32,897 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:32,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:32,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1319000567, now seen corresponding path program 1 times [2022-11-19 06:52:32,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:32,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987210236] [2022-11-19 06:52:32,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:32,898 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:32,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:32,899 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:32,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-19 06:52:32,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:32,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:52:32,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:32,993 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 06:52:32,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:32,994 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:32,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987210236] [2022-11-19 06:52:32,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987210236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:32,995 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:32,995 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:52:32,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898363610] [2022-11-19 06:52:32,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:32,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:52:32,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:32,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:52:32,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:32,996 INFO L87 Difference]: Start difference. First operand 99 states and 142 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 06:52:33,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:33,045 INFO L93 Difference]: Finished difference Result 136 states and 192 transitions. [2022-11-19 06:52:33,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:52:33,046 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 49 [2022-11-19 06:52:33,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:33,047 INFO L225 Difference]: With dead ends: 136 [2022-11-19 06:52:33,047 INFO L226 Difference]: Without dead ends: 103 [2022-11-19 06:52:33,048 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:33,048 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:33,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 193 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:52:33,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-19 06:52:33,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2022-11-19 06:52:33,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 70 states have (on average 1.2) internal successors, (84), 70 states have internal predecessors, (84), 22 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (36), 26 states have call predecessors, (36), 22 states have call successors, (36) [2022-11-19 06:52:33,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 142 transitions. [2022-11-19 06:52:33,060 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 142 transitions. Word has length 49 [2022-11-19 06:52:33,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:33,060 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 142 transitions. [2022-11-19 06:52:33,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 06:52:33,060 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 142 transitions. [2022-11-19 06:52:33,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-19 06:52:33,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:33,062 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 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] [2022-11-19 06:52:33,074 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-11-19 06:52:33,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:33,271 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:33,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:33,272 INFO L85 PathProgramCache]: Analyzing trace with hash 584647616, now seen corresponding path program 1 times [2022-11-19 06:52:33,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:33,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959339988] [2022-11-19 06:52:33,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:33,272 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:33,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:33,273 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:33,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-19 06:52:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:33,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:52:33,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:33,414 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-19 06:52:33,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:33,415 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:33,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959339988] [2022-11-19 06:52:33,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959339988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:33,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:33,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:52:33,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021927781] [2022-11-19 06:52:33,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:33,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:52:33,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:33,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:52:33,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:33,417 INFO L87 Difference]: Start difference. First operand 99 states and 142 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 06:52:33,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:33,466 INFO L93 Difference]: Finished difference Result 134 states and 185 transitions. [2022-11-19 06:52:33,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:52:33,467 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 50 [2022-11-19 06:52:33,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:33,468 INFO L225 Difference]: With dead ends: 134 [2022-11-19 06:52:33,468 INFO L226 Difference]: Without dead ends: 101 [2022-11-19 06:52:33,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:33,469 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 0 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 193 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:33,469 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 193 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:52:33,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-19 06:52:33,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2022-11-19 06:52:33,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 69 states have (on average 1.2028985507246377) internal successors, (83), 68 states have internal predecessors, (83), 22 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (30), 26 states have call predecessors, (30), 22 states have call successors, (30) [2022-11-19 06:52:33,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 135 transitions. [2022-11-19 06:52:33,485 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 135 transitions. Word has length 50 [2022-11-19 06:52:33,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:33,485 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 135 transitions. [2022-11-19 06:52:33,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-19 06:52:33,486 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 135 transitions. [2022-11-19 06:52:33,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-19 06:52:33,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:33,487 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 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] [2022-11-19 06:52:33,498 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-11-19 06:52:33,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:33,695 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:33,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:33,696 INFO L85 PathProgramCache]: Analyzing trace with hash -412424737, now seen corresponding path program 1 times [2022-11-19 06:52:33,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:33,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1975319775] [2022-11-19 06:52:33,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:33,696 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:33,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:33,698 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:33,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-19 06:52:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:33,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-19 06:52:33,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:34,412 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-19 06:52:34,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:34,412 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:34,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1975319775] [2022-11-19 06:52:34,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1975319775] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:34,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:34,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-19 06:52:34,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196771299] [2022-11-19 06:52:34,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:34,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-19 06:52:34,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:34,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-19 06:52:34,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-19 06:52:34,415 INFO L87 Difference]: Start difference. First operand 97 states and 135 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-19 06:52:35,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:35,688 INFO L93 Difference]: Finished difference Result 106 states and 150 transitions. [2022-11-19 06:52:35,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-19 06:52:35,688 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 50 [2022-11-19 06:52:35,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:35,690 INFO L225 Difference]: With dead ends: 106 [2022-11-19 06:52:35,690 INFO L226 Difference]: Without dead ends: 89 [2022-11-19 06:52:35,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2022-11-19 06:52:35,691 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 52 mSDsluCounter, 435 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:35,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 489 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 378 Invalid, 0 Unknown, 62 Unchecked, 0.9s Time] [2022-11-19 06:52:35,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-19 06:52:35,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2022-11-19 06:52:35,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 60 states have internal predecessors, (74), 18 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (25), 22 states have call predecessors, (25), 18 states have call successors, (25) [2022-11-19 06:52:35,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 117 transitions. [2022-11-19 06:52:35,701 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 117 transitions. Word has length 50 [2022-11-19 06:52:35,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:35,701 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 117 transitions. [2022-11-19 06:52:35,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 3 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-19 06:52:35,702 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 117 transitions. [2022-11-19 06:52:35,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-19 06:52:35,703 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:35,703 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 2, 2, 2, 2, 2, 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] [2022-11-19 06:52:35,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-11-19 06:52:35,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:35,917 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:35,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:35,918 INFO L85 PathProgramCache]: Analyzing trace with hash 992710810, now seen corresponding path program 1 times [2022-11-19 06:52:35,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:35,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [637958443] [2022-11-19 06:52:35,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:35,918 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:35,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:35,919 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:35,925 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-11-19 06:52:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:36,006 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 06:52:36,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:36,227 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 06:52:36,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:36,576 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 06:52:36,576 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:36,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [637958443] [2022-11-19 06:52:36,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [637958443] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:36,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1713590333] [2022-11-19 06:52:36,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:36,577 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:52:36,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:52:36,578 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:52:36,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2022-11-19 06:52:36,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:36,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 06:52:36,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:37,046 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 16 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 06:52:37,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:37,749 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 06:52:37,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1713590333] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:37,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967094874] [2022-11-19 06:52:37,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:37,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:37,750 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:37,751 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:52:37,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-11-19 06:52:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:37,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-19 06:52:37,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:38,028 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 06:52:38,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:38,320 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 06:52:38,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [967094874] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:38,320 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:52:38,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8, 9, 10, 12] total 17 [2022-11-19 06:52:38,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615305946] [2022-11-19 06:52:38,321 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:52:38,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-19 06:52:38,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:38,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-19 06:52:38,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-11-19 06:52:38,322 INFO L87 Difference]: Start difference. First operand 85 states and 117 transitions. Second operand has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-19 06:52:39,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:39,045 INFO L93 Difference]: Finished difference Result 130 states and 174 transitions. [2022-11-19 06:52:39,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 06:52:39,046 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) Word has length 53 [2022-11-19 06:52:39,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:39,049 INFO L225 Difference]: With dead ends: 130 [2022-11-19 06:52:39,049 INFO L226 Difference]: Without dead ends: 95 [2022-11-19 06:52:39,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2022-11-19 06:52:39,051 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 123 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:39,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 519 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 06:52:39,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2022-11-19 06:52:39,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 81. [2022-11-19 06:52:39,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 58 states have (on average 1.1724137931034482) internal successors, (68), 57 states have internal predecessors, (68), 17 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (24), 21 states have call predecessors, (24), 17 states have call successors, (24) [2022-11-19 06:52:39,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 109 transitions. [2022-11-19 06:52:39,069 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 109 transitions. Word has length 53 [2022-11-19 06:52:39,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:39,069 INFO L495 AbstractCegarLoop]: Abstraction has 81 states and 109 transitions. [2022-11-19 06:52:39,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.4705882352941178) internal successors, (42), 12 states have internal predecessors, (42), 3 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (12), 7 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-19 06:52:39,070 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 109 transitions. [2022-11-19 06:52:39,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-19 06:52:39,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:39,071 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:39,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:39,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-11-19 06:52:39,488 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (28)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:39,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 06:52:39,685 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:39,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:39,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1377347757, now seen corresponding path program 1 times [2022-11-19 06:52:39,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:39,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1243536106] [2022-11-19 06:52:39,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:39,686 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:39,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:39,687 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:39,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-11-19 06:52:39,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:39,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-19 06:52:39,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:40,343 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 06:52:40,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:42,405 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-19 06:52:42,405 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:42,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1243536106] [2022-11-19 06:52:42,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1243536106] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:42,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [971147687] [2022-11-19 06:52:42,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:42,406 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:52:42,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:52:42,406 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:52:42,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (31)] Waiting until timeout for monitored process [2022-11-19 06:52:42,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:42,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-19 06:52:42,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:42,984 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 06:52:42,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:44,964 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-19 06:52:44,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [971147687] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:44,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100281538] [2022-11-19 06:52:44,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:44,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:44,965 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:44,966 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:52:44,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-11-19 06:52:45,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:45,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-19 06:52:45,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:45,365 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 29 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 06:52:45,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:46,410 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-19 06:52:46,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2100281538] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:46,410 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:52:46,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13, 13, 15, 16] total 27 [2022-11-19 06:52:46,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129379042] [2022-11-19 06:52:46,410 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:52:46,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-19 06:52:46,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:46,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-19 06:52:46,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=601, Unknown=0, NotChecked=0, Total=702 [2022-11-19 06:52:46,412 INFO L87 Difference]: Start difference. First operand 81 states and 109 transitions. Second operand has 27 states, 26 states have (on average 2.076923076923077) internal successors, (54), 23 states have internal predecessors, (54), 4 states have call successors, (10), 2 states have call predecessors, (10), 7 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-19 06:52:47,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:47,934 INFO L93 Difference]: Finished difference Result 127 states and 168 transitions. [2022-11-19 06:52:47,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-19 06:52:47,935 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.076923076923077) internal successors, (54), 23 states have internal predecessors, (54), 4 states have call successors, (10), 2 states have call predecessors, (10), 7 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) Word has length 55 [2022-11-19 06:52:47,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:47,936 INFO L225 Difference]: With dead ends: 127 [2022-11-19 06:52:47,936 INFO L226 Difference]: Without dead ends: 94 [2022-11-19 06:52:47,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 294 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=207, Invalid=1125, Unknown=0, NotChecked=0, Total=1332 [2022-11-19 06:52:47,937 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 161 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 104 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:47,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 488 Invalid, 738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 581 Invalid, 0 Unknown, 104 Unchecked, 1.0s Time] [2022-11-19 06:52:47,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-11-19 06:52:47,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 80. [2022-11-19 06:52:47,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 57 states have internal predecessors, (66), 17 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (23), 20 states have call predecessors, (23), 17 states have call successors, (23) [2022-11-19 06:52:47,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 106 transitions. [2022-11-19 06:52:47,947 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 106 transitions. Word has length 55 [2022-11-19 06:52:47,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:47,947 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 106 transitions. [2022-11-19 06:52:47,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.076923076923077) internal successors, (54), 23 states have internal predecessors, (54), 4 states have call successors, (10), 2 states have call predecessors, (10), 7 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-19 06:52:47,948 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 106 transitions. [2022-11-19 06:52:47,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-19 06:52:47,949 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:47,949 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2022-11-19 06:52:47,957 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (31)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:48,157 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:48,361 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-11-19 06:52:48,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:48,553 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:48,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:48,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1696305608, now seen corresponding path program 1 times [2022-11-19 06:52:48,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:48,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [575992744] [2022-11-19 06:52:48,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:48,554 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:48,554 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:48,555 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:48,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-11-19 06:52:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:48,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-19 06:52:48,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:48,877 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:52:48,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:48,877 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:48,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [575992744] [2022-11-19 06:52:48,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [575992744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:48,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:48,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-19 06:52:48,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47787990] [2022-11-19 06:52:48,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:48,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 06:52:48,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:48,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 06:52:48,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-19 06:52:48,879 INFO L87 Difference]: Start difference. First operand 80 states and 106 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 06:52:49,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:49,376 INFO L93 Difference]: Finished difference Result 104 states and 133 transitions. [2022-11-19 06:52:49,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 06:52:49,377 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 60 [2022-11-19 06:52:49,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:49,378 INFO L225 Difference]: With dead ends: 104 [2022-11-19 06:52:49,378 INFO L226 Difference]: Without dead ends: 80 [2022-11-19 06:52:49,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-19 06:52:49,379 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 41 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:49,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 292 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 06:52:49,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-11-19 06:52:49,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2022-11-19 06:52:49,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 57 states have internal predecessors, (66), 17 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (21), 20 states have call predecessors, (21), 17 states have call successors, (21) [2022-11-19 06:52:49,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 104 transitions. [2022-11-19 06:52:49,388 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 104 transitions. Word has length 60 [2022-11-19 06:52:49,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:49,388 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 104 transitions. [2022-11-19 06:52:49,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 06:52:49,389 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 104 transitions. [2022-11-19 06:52:49,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-19 06:52:49,390 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:49,390 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:49,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:49,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:49,603 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:49,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:49,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1055709639, now seen corresponding path program 1 times [2022-11-19 06:52:49,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:49,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1478253294] [2022-11-19 06:52:49,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:49,604 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:49,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:49,605 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:49,606 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-19 06:52:49,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:49,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-19 06:52:49,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:49,981 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:52:49,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:49,981 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:49,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1478253294] [2022-11-19 06:52:49,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1478253294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:49,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:49,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-19 06:52:49,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672055994] [2022-11-19 06:52:49,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:49,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 06:52:49,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:49,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 06:52:49,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-19 06:52:49,983 INFO L87 Difference]: Start difference. First operand 80 states and 104 transitions. Second operand has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 06:52:50,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:50,482 INFO L93 Difference]: Finished difference Result 106 states and 136 transitions. [2022-11-19 06:52:50,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 06:52:50,482 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 61 [2022-11-19 06:52:50,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:50,483 INFO L225 Difference]: With dead ends: 106 [2022-11-19 06:52:50,483 INFO L226 Difference]: Without dead ends: 82 [2022-11-19 06:52:50,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-19 06:52:50,484 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 38 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:50,485 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 298 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 202 Invalid, 0 Unknown, 27 Unchecked, 0.3s Time] [2022-11-19 06:52:50,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-11-19 06:52:50,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2022-11-19 06:52:50,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 59 states have internal predecessors, (67), 17 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (23), 20 states have call predecessors, (23), 17 states have call successors, (23) [2022-11-19 06:52:50,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 107 transitions. [2022-11-19 06:52:50,492 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 107 transitions. Word has length 61 [2022-11-19 06:52:50,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:50,493 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 107 transitions. [2022-11-19 06:52:50,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.9) internal successors, (39), 9 states have internal predecessors, (39), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 06:52:50,493 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 107 transitions. [2022-11-19 06:52:50,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-19 06:52:50,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:50,494 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2022-11-19 06:52:50,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:50,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:50,707 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:50,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:50,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1911580054, now seen corresponding path program 1 times [2022-11-19 06:52:50,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:50,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1410757592] [2022-11-19 06:52:50,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:50,708 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:50,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:50,709 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:50,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-11-19 06:52:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:50,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 06:52:50,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:50,978 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 06:52:50,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:52,078 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 06:52:52,078 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:52,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1410757592] [2022-11-19 06:52:52,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1410757592] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:52,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1775126620] [2022-11-19 06:52:52,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:52,079 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:52:52,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:52:52,080 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:52:52,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (36)] Waiting until timeout for monitored process [2022-11-19 06:52:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:52,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-19 06:52:52,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:52,623 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-19 06:52:52,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:52,944 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 06:52:52,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1775126620] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:52:52,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782264721] [2022-11-19 06:52:52,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:52,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:52,945 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:52:52,946 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:52:52,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-11-19 06:52:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:53,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-19 06:52:53,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:53,353 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:52:53,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:52:54,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782264721] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 06:52:54,639 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-19 06:52:54,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8, 9, 10] total 24 [2022-11-19 06:52:54,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769579192] [2022-11-19 06:52:54,640 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-19 06:52:54,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-19 06:52:54,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:54,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-19 06:52:54,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2022-11-19 06:52:54,642 INFO L87 Difference]: Start difference. First operand 82 states and 107 transitions. Second operand has 24 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 17 states have internal predecessors, (79), 5 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (27), 11 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-19 06:52:56,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:56,418 INFO L93 Difference]: Finished difference Result 111 states and 136 transitions. [2022-11-19 06:52:56,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-19 06:52:56,421 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 17 states have internal predecessors, (79), 5 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (27), 11 states have call predecessors, (27), 5 states have call successors, (27) Word has length 62 [2022-11-19 06:52:56,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:56,421 INFO L225 Difference]: With dead ends: 111 [2022-11-19 06:52:56,421 INFO L226 Difference]: Without dead ends: 51 [2022-11-19 06:52:56,422 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 346 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=169, Invalid=1163, Unknown=0, NotChecked=0, Total=1332 [2022-11-19 06:52:56,423 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 97 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:56,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 413 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 559 Invalid, 0 Unknown, 40 Unchecked, 1.2s Time] [2022-11-19 06:52:56,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-19 06:52:56,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2022-11-19 06:52:56,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 36 states have internal predecessors, (40), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-19 06:52:56,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2022-11-19 06:52:56,429 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 62 [2022-11-19 06:52:56,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:56,429 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2022-11-19 06:52:56,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 3.4347826086956523) internal successors, (79), 17 states have internal predecessors, (79), 5 states have call successors, (21), 2 states have call predecessors, (21), 6 states have return successors, (27), 11 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-19 06:52:56,430 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2022-11-19 06:52:56,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-19 06:52:56,430 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:56,431 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:56,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (36)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:56,642 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-11-19 06:52:56,839 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:57,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:57,034 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:57,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:57,035 INFO L85 PathProgramCache]: Analyzing trace with hash -187739156, now seen corresponding path program 1 times [2022-11-19 06:52:57,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:57,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1266645424] [2022-11-19 06:52:57,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:57,035 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:57,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:57,036 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:57,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-19 06:52:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:57,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-19 06:52:57,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:57,390 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:52:57,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:57,391 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:57,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1266645424] [2022-11-19 06:52:57,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1266645424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:57,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:57,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-19 06:52:57,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580744157] [2022-11-19 06:52:57,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:57,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 06:52:57,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:57,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 06:52:57,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-19 06:52:57,393 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 06:52:57,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:57,889 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2022-11-19 06:52:57,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 06:52:57,890 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 62 [2022-11-19 06:52:57,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:57,890 INFO L225 Difference]: With dead ends: 67 [2022-11-19 06:52:57,890 INFO L226 Difference]: Without dead ends: 50 [2022-11-19 06:52:57,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-19 06:52:57,891 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 32 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:57,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 241 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 30 Unchecked, 0.4s Time] [2022-11-19 06:52:57,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-19 06:52:57,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2022-11-19 06:52:57,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 35 states have (on average 1.1428571428571428) internal successors, (40), 36 states have internal predecessors, (40), 8 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2022-11-19 06:52:57,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2022-11-19 06:52:57,896 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 62 [2022-11-19 06:52:57,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:57,896 INFO L495 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2022-11-19 06:52:57,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.0) internal successors, (40), 9 states have internal predecessors, (40), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 06:52:57,897 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2022-11-19 06:52:57,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-19 06:52:57,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:57,898 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:57,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:58,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:58,111 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:58,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:58,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1230639261, now seen corresponding path program 1 times [2022-11-19 06:52:58,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:58,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [354351324] [2022-11-19 06:52:58,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:58,112 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:58,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:58,112 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:58,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-11-19 06:52:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:58,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-19 06:52:58,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:58,451 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 06:52:58,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:52:58,451 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:52:58,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [354351324] [2022-11-19 06:52:58,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [354351324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:58,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:58,452 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-19 06:52:58,452 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277396633] [2022-11-19 06:52:58,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:58,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 06:52:58,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:52:58,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 06:52:58,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-19 06:52:58,454 INFO L87 Difference]: Start difference. First operand 48 states and 58 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 06:52:58,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:58,933 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2022-11-19 06:52:58,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 06:52:58,934 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 63 [2022-11-19 06:52:58,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:58,934 INFO L225 Difference]: With dead ends: 64 [2022-11-19 06:52:58,935 INFO L226 Difference]: Without dead ends: 47 [2022-11-19 06:52:58,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-19 06:52:58,935 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 31 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:58,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 241 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 06:52:58,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-19 06:52:58,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2022-11-19 06:52:58,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 34 states have internal predecessors, (38), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 06:52:58,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2022-11-19 06:52:58,940 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 63 [2022-11-19 06:52:58,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:58,940 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2022-11-19 06:52:58,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 3 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-19 06:52:58,940 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2022-11-19 06:52:58,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-19 06:52:58,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:58,941 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:58,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:59,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:59,142 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:59,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:59,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1065424800, now seen corresponding path program 1 times [2022-11-19 06:52:59,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:52:59,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [307399434] [2022-11-19 06:52:59,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:59,143 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:52:59,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:52:59,144 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:52:59,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-19 06:52:59,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:59,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 06:52:59,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:52:59,637 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-19 06:52:59,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:53:00,131 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-19 06:53:00,131 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:53:00,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [307399434] [2022-11-19 06:53:00,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [307399434] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:53:00,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [338896959] [2022-11-19 06:53:00,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:00,132 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 06:53:00,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 06:53:00,133 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 06:53:00,135 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2022-11-19 06:53:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:00,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-19 06:53:00,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:53:00,996 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-19 06:53:00,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:53:01,234 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-19 06:53:01,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [338896959] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:53:01,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857018000] [2022-11-19 06:53:01,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:01,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:53:01,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:53:01,236 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:53:01,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-11-19 06:53:01,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:01,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-19 06:53:01,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:53:01,648 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-19 06:53:01,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 06:53:01,967 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-19 06:53:01,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857018000] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 06:53:01,967 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 06:53:01,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 12, 9] total 28 [2022-11-19 06:53:01,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756696560] [2022-11-19 06:53:01,968 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 06:53:01,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-19 06:53:01,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:53:01,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-19 06:53:01,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=648, Unknown=0, NotChecked=0, Total=756 [2022-11-19 06:53:01,970 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand has 28 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 24 states have internal predecessors, (83), 10 states have call successors, (21), 1 states have call predecessors, (21), 5 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) [2022-11-19 06:53:04,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:53:04,109 INFO L93 Difference]: Finished difference Result 88 states and 106 transitions. [2022-11-19 06:53:04,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-19 06:53:04,110 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 24 states have internal predecessors, (83), 10 states have call successors, (21), 1 states have call predecessors, (21), 5 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) Word has length 63 [2022-11-19 06:53:04,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:53:04,111 INFO L225 Difference]: With dead ends: 88 [2022-11-19 06:53:04,111 INFO L226 Difference]: Without dead ends: 64 [2022-11-19 06:53:04,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 345 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=207, Invalid=1125, Unknown=0, NotChecked=0, Total=1332 [2022-11-19 06:53:04,112 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 177 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:53:04,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 395 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-19 06:53:04,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-11-19 06:53:04,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 45. [2022-11-19 06:53:04,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 33 states have (on average 1.121212121212121) internal successors, (37), 34 states have internal predecessors, (37), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2022-11-19 06:53:04,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2022-11-19 06:53:04,117 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 63 [2022-11-19 06:53:04,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:53:04,118 INFO L495 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2022-11-19 06:53:04,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 3.1923076923076925) internal successors, (83), 24 states have internal predecessors, (83), 10 states have call successors, (21), 1 states have call predecessors, (21), 5 states have return successors, (25), 12 states have call predecessors, (25), 10 states have call successors, (25) [2022-11-19 06:53:04,124 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2022-11-19 06:53:04,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-19 06:53:04,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:53:04,125 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:53:04,132 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-11-19 06:53:04,340 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-11-19 06:53:04,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (41)] Ended with exit code 0 [2022-11-19 06:53:04,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 06:53:04,732 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:53:04,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:53:04,732 INFO L85 PathProgramCache]: Analyzing trace with hash -846570082, now seen corresponding path program 1 times [2022-11-19 06:53:04,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 06:53:04,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1240442353] [2022-11-19 06:53:04,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:04,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:53:04,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 06:53:04,734 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-19 06:53:04,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-11-19 06:53:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:04,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:53:04,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:53:04,850 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-19 06:53:04,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:53:04,850 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 06:53:04,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1240442353] [2022-11-19 06:53:04,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1240442353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:53:04,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:53:04,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:53:04,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259257754] [2022-11-19 06:53:04,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:53:04,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:53:04,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 06:53:04,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:53:04,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:53:04,853 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 06:53:04,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:53:04,880 INFO L93 Difference]: Finished difference Result 48 states and 55 transitions. [2022-11-19 06:53:04,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:53:04,880 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 63 [2022-11-19 06:53:04,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:53:04,881 INFO L225 Difference]: With dead ends: 48 [2022-11-19 06:53:04,881 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 06:53:04,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:53:04,881 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:53:04,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 06:53:04,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 06:53:04,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 06:53:04,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 06:53:04,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 06:53:04,883 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 63 [2022-11-19 06:53:04,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:53:04,883 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 06:53:04,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-19 06:53:04,884 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 06:53:04,884 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 06:53:04,886 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-11-19 06:53:04,887 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-11-19 06:53:04,904 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-11-19 06:53:05,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-19 06:53:05,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 06:53:06,675 INFO L899 garLoopResultBuilder]: For program point isnan_floatFINAL(line 59) no Hoare annotation was computed. [2022-11-19 06:53:06,675 INFO L902 garLoopResultBuilder]: At program point isnan_floatENTRY(line 59) the Hoare annotation is: true [2022-11-19 06:53:06,675 INFO L899 garLoopResultBuilder]: For program point isnan_floatEXIT(line 59) no Hoare annotation was computed. [2022-11-19 06:53:06,675 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2022-11-19 06:53:06,676 INFO L899 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2022-11-19 06:53:06,676 INFO L895 garLoopResultBuilder]: At program point L40(line 40) the Hoare annotation is: (let ((.cse1 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse0 (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|))) (or (and (not .cse0) (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse1 (= |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|)) (and (not (fp.eq |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_fmin_float_~x#1|)) (= |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|) (not .cse1) .cse0))) [2022-11-19 06:53:06,676 INFO L899 garLoopResultBuilder]: For program point L40-1(lines 40 41) no Hoare annotation was computed. [2022-11-19 06:53:06,676 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-19 06:53:06,676 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-19 06:53:06,676 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-19 06:53:06,676 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 77) no Hoare annotation was computed. [2022-11-19 06:53:06,677 INFO L895 garLoopResultBuilder]: At program point L82(line 82) the Hoare annotation is: (let ((.cse0 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and (not (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|)) (= |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~x~0#1|) (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~x~0#1|) .cse0 (= |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|)) (and (not .cse0) (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|)))) [2022-11-19 06:53:06,677 INFO L899 garLoopResultBuilder]: For program point L82-1(line 82) no Hoare annotation was computed. [2022-11-19 06:53:06,677 INFO L899 garLoopResultBuilder]: For program point L82-2(line 82) no Hoare annotation was computed. [2022-11-19 06:53:06,677 INFO L895 garLoopResultBuilder]: At program point L82-3(line 82) the Hoare annotation is: (let ((.cse0 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and (not (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|)) (= |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~x~0#1|) (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~x~0#1|) .cse0 (= |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|)) (and (not .cse0) (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|)))) [2022-11-19 06:53:06,677 INFO L899 garLoopResultBuilder]: For program point L82-4(line 82) no Hoare annotation was computed. [2022-11-19 06:53:06,677 INFO L899 garLoopResultBuilder]: For program point L82-6(lines 82 85) no Hoare annotation was computed. [2022-11-19 06:53:06,677 INFO L902 garLoopResultBuilder]: At program point L70(line 70) the Hoare annotation is: true [2022-11-19 06:53:06,677 INFO L899 garLoopResultBuilder]: For program point L70-1(line 70) no Hoare annotation was computed. [2022-11-19 06:53:06,677 INFO L899 garLoopResultBuilder]: For program point L70-2(line 70) no Hoare annotation was computed. [2022-11-19 06:53:06,677 INFO L895 garLoopResultBuilder]: At program point L70-3(line 70) the Hoare annotation is: (and (= |ULTIMATE.start_main_#t~ret10#1| (_ bv1 32)) |ULTIMATE.start_main_#t~short12#1| (not (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) [2022-11-19 06:53:06,677 INFO L899 garLoopResultBuilder]: For program point L70-4(line 70) no Hoare annotation was computed. [2022-11-19 06:53:06,678 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 06:53:06,678 INFO L899 garLoopResultBuilder]: For program point L70-6(line 70) no Hoare annotation was computed. [2022-11-19 06:53:06,678 INFO L899 garLoopResultBuilder]: For program point L70-7(lines 70 71) no Hoare annotation was computed. [2022-11-19 06:53:06,678 INFO L899 garLoopResultBuilder]: For program point L70-9(lines 70 86) no Hoare annotation was computed. [2022-11-19 06:53:06,678 INFO L899 garLoopResultBuilder]: For program point L70-11(lines 70 86) no Hoare annotation was computed. [2022-11-19 06:53:06,678 INFO L899 garLoopResultBuilder]: For program point L83(line 83) no Hoare annotation was computed. [2022-11-19 06:53:06,678 INFO L895 garLoopResultBuilder]: At program point L71(line 71) the Hoare annotation is: (let ((.cse0 (not |ULTIMATE.start_main_#t~short12#1|)) (.cse1 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse2 (not |ULTIMATE.start_main_#t~short16#1|))) (or (and .cse0 (= |ULTIMATE.start_main_#t~ret10#1| (_ bv1 32)) (= |ULTIMATE.start_main_#t~ret11#1| (_ bv1 32)) (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (not .cse1) .cse2) (and .cse0 (= |ULTIMATE.start_main_#t~ret10#1| (_ bv0 32)) .cse1 .cse2))) [2022-11-19 06:53:06,678 INFO L899 garLoopResultBuilder]: For program point L71-1(line 71) no Hoare annotation was computed. [2022-11-19 06:53:06,678 INFO L895 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (let ((.cse1 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) (.cse0 (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|))) (or (and (not .cse0) (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) .cse1 (= |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|)) (and (not (fp.eq |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_fmin_float_~x#1|)) (= |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|) (not .cse1) .cse0))) [2022-11-19 06:53:06,678 INFO L899 garLoopResultBuilder]: For program point L71-2(line 71) no Hoare annotation was computed. [2022-11-19 06:53:06,679 INFO L899 garLoopResultBuilder]: For program point L38-1(lines 38 39) no Hoare annotation was computed. [2022-11-19 06:53:06,679 INFO L895 garLoopResultBuilder]: At program point L71-3(line 71) the Hoare annotation is: (and (not |ULTIMATE.start_main_#t~short12#1|) |ULTIMATE.start_main_#t~short15#1| (= |ULTIMATE.start_main_#t~ret13#1| (_ bv0 32)) (= |ULTIMATE.start_main_#t~ret10#1| (_ bv0 32)) (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|) (not |ULTIMATE.start_main_#t~short16#1|)) [2022-11-19 06:53:06,679 INFO L899 garLoopResultBuilder]: For program point L71-4(line 71) no Hoare annotation was computed. [2022-11-19 06:53:06,679 INFO L899 garLoopResultBuilder]: For program point L71-6(line 71) no Hoare annotation was computed. [2022-11-19 06:53:06,679 INFO L902 garLoopResultBuilder]: At program point L88(lines 61 89) the Hoare annotation is: true [2022-11-19 06:53:06,679 INFO L895 garLoopResultBuilder]: At program point L76(line 76) the Hoare annotation is: (let ((.cse0 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and (fp.eq |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~y~0#1|) (fp.eq |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~y~0#1|) (not .cse0) (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|)) (and (not (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|)) (= |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~x~0#1|) (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~x~0#1|) .cse0 (= |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|)))) [2022-11-19 06:53:06,679 INFO L895 garLoopResultBuilder]: At program point L43(lines 37 44) the Hoare annotation is: (let ((.cse0 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and (fp.eq |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~y~0#1|) (not .cse0) (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|)) (and (not (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_fmin_float_~y#1|)) (not (fp.eq |ULTIMATE.start_main_~y~0#1| |ULTIMATE.start_main_~y~0#1|)) (= |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~x~0#1|) .cse0 (= |ULTIMATE.start_fmin_float_~x#1| |ULTIMATE.start_main_~x~0#1|)))) [2022-11-19 06:53:06,679 INFO L899 garLoopResultBuilder]: For program point L76-1(line 76) no Hoare annotation was computed. [2022-11-19 06:53:06,680 INFO L899 garLoopResultBuilder]: For program point L76-2(line 76) no Hoare annotation was computed. [2022-11-19 06:53:06,680 INFO L895 garLoopResultBuilder]: At program point L76-3(line 76) the Hoare annotation is: (and (fp.eq |ULTIMATE.start_fmin_float_#res#1| |ULTIMATE.start_main_~y~0#1|) |ULTIMATE.start_main_#t~short20#1| (fp.eq |ULTIMATE.start_main_~res~0#1| |ULTIMATE.start_main_~y~0#1|) (= |ULTIMATE.start_main_#t~ret18#1| (_ bv1 32)) (not (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|)) (fp.eq |ULTIMATE.start_fmin_float_~y#1| |ULTIMATE.start_main_~y~0#1|)) [2022-11-19 06:53:06,680 INFO L899 garLoopResultBuilder]: For program point L76-4(line 76) no Hoare annotation was computed. [2022-11-19 06:53:06,680 INFO L899 garLoopResultBuilder]: For program point L76-6(lines 76 79) no Hoare annotation was computed. [2022-11-19 06:53:06,680 INFO L899 garLoopResultBuilder]: For program point L31(lines 31 34) no Hoare annotation was computed. [2022-11-19 06:53:06,680 INFO L899 garLoopResultBuilder]: For program point __fpclassify_floatFINAL(lines 14 35) no Hoare annotation was computed. [2022-11-19 06:53:06,680 INFO L899 garLoopResultBuilder]: For program point L25(lines 25 34) no Hoare annotation was computed. [2022-11-19 06:53:06,680 INFO L899 garLoopResultBuilder]: For program point L17-1(lines 17 21) no Hoare annotation was computed. [2022-11-19 06:53:06,680 INFO L895 garLoopResultBuilder]: At program point L17-2(lines 17 21) the Hoare annotation is: (= |__fpclassify_float_#in~x| __fpclassify_float_~x) [2022-11-19 06:53:06,680 INFO L899 garLoopResultBuilder]: For program point L17-3(lines 14 35) no Hoare annotation was computed. [2022-11-19 06:53:06,680 INFO L899 garLoopResultBuilder]: For program point L28(lines 28 34) no Hoare annotation was computed. [2022-11-19 06:53:06,680 INFO L902 garLoopResultBuilder]: At program point __fpclassify_floatENTRY(lines 14 35) the Hoare annotation is: true [2022-11-19 06:53:06,681 INFO L899 garLoopResultBuilder]: For program point __fpclassify_floatEXIT(lines 14 35) no Hoare annotation was computed. [2022-11-19 06:53:06,684 INFO L444 BasicCegarLoop]: Path program 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] [2022-11-19 06:53:06,686 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 06:53:06,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 06:53:06 BoogieIcfgContainer [2022-11-19 06:53:06,700 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 06:53:06,700 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 06:53:06,700 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 06:53:06,701 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 06:53:06,701 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:52:02" (3/4) ... [2022-11-19 06:53:06,704 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 06:53:06,711 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_float [2022-11-19 06:53:06,711 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2022-11-19 06:53:06,716 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-19 06:53:06,716 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2022-11-19 06:53:06,717 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-19 06:53:06,717 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 06:53:06,744 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2022-11-19 06:53:06,744 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((~fp.eq~FLOAT(\result, y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) || ((((!~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(y, y)) && \result == x) && ~fp.eq~FLOAT(x, x)) && x == x) [2022-11-19 06:53:06,760 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 06:53:06,760 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 06:53:06,761 INFO L158 Benchmark]: Toolchain (without parser) took 64918.35ms. Allocated memory was 75.5MB in the beginning and 121.6MB in the end (delta: 46.1MB). Free memory was 60.4MB in the beginning and 57.8MB in the end (delta: 2.6MB). Peak memory consumption was 47.0MB. Max. memory is 16.1GB. [2022-11-19 06:53:06,761 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 75.5MB. Free memory is still 57.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:53:06,761 INFO L158 Benchmark]: CACSL2BoogieTranslator took 345.98ms. Allocated memory is still 75.5MB. Free memory was 60.2MB in the beginning and 58.2MB in the end (delta: 2.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 06:53:06,762 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.62ms. Allocated memory is still 75.5MB. Free memory was 58.2MB in the beginning and 56.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 06:53:06,762 INFO L158 Benchmark]: Boogie Preprocessor took 33.14ms. Allocated memory is still 75.5MB. Free memory was 56.3MB in the beginning and 54.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:53:06,762 INFO L158 Benchmark]: RCFGBuilder took 447.88ms. Allocated memory is still 75.5MB. Free memory was 54.8MB in the beginning and 40.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-19 06:53:06,763 INFO L158 Benchmark]: TraceAbstraction took 63968.47ms. Allocated memory was 75.5MB in the beginning and 121.6MB in the end (delta: 46.1MB). Free memory was 39.5MB in the beginning and 62.0MB in the end (delta: -22.5MB). Peak memory consumption was 57.4MB. Max. memory is 16.1GB. [2022-11-19 06:53:06,763 INFO L158 Benchmark]: Witness Printer took 59.86ms. Allocated memory is still 121.6MB. Free memory was 61.0MB in the beginning and 57.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 06:53:06,765 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 75.5MB. Free memory is still 57.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 345.98ms. Allocated memory is still 75.5MB. Free memory was 60.2MB in the beginning and 58.2MB in the end (delta: 2.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.62ms. Allocated memory is still 75.5MB. Free memory was 58.2MB in the beginning and 56.3MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.14ms. Allocated memory is still 75.5MB. Free memory was 56.3MB in the beginning and 54.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 447.88ms. Allocated memory is still 75.5MB. Free memory was 54.8MB in the beginning and 40.1MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 63968.47ms. Allocated memory was 75.5MB in the beginning and 121.6MB in the end (delta: 46.1MB). Free memory was 39.5MB in the beginning and 62.0MB in the end (delta: -22.5MB). Peak memory consumption was 57.4MB. Max. memory is 16.1GB. * Witness Printer took 59.86ms. Allocated memory is still 121.6MB. Free memory was 61.0MB in the beginning and 57.8MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 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 3 procedures, 53 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 63.8s, OverallIterations: 26, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 20.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 1453 SdHoareTripleChecker+Valid, 13.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1404 mSDsluCounter, 8179 SdHoareTripleChecker+Invalid, 12.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 263 IncrementalHoareTripleChecker+Unchecked, 6707 mSDsCounter, 505 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5756 IncrementalHoareTripleChecker+Invalid, 6525 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 505 mSolverCounterUnsat, 1472 mSDtfsCounter, 5756 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3251 GetRequests, 2872 SyntacticMatches, 8 SemanticMatches, 371 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1614 ImplicationChecksByTransitivity, 14.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=13, InterpolantAutomatonStates: 234, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 26 MinimizatonAttempts, 190 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 15 LocationsWithAnnotation, 152 PreInvPairs, 178 NumberOfFragments, 268 HoareAnnotationTreeSize, 152 FomulaSimplifications, 66 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 15 FomulaSimplificationsInter, 14346 FormulaSimplificationTreeSizeReductionInter, 1.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.6s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 26.8s InterpolantComputationTime, 2055 NumberOfCodeBlocks, 2055 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 3067 ConstructedInterpolants, 13 QuantifiedInterpolants, 10235 SizeOfPredicates, 260 NumberOfNonLiveVariables, 4739 ConjunctsInSsa, 509 ConjunctsInUnsatCore, 63 InterpolantComputations, 20 PerfectInterpolantSequences, 1711/1986 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: 61]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((~fp.eq~FLOAT(\result, y) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(y, y)) || ((((!~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(y, y)) && \result == x) && ~fp.eq~FLOAT(x, x)) && x == x) RESULT: Ultimate proved your program to be correct! [2022-11-19 06:53:06,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c0c9665-ede1-42ad-a9f4-a4a11eef5c84/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE