./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/email_spec11_product30.cil.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_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 e4fb36b23f327758af91661b12ca1735faf7949901dbd5c1543c17ea0384ceb9 --- 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 07:59:42,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:59:42,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:59:42,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:59:42,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:59:42,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:59:42,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:59:42,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:59:42,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:59:42,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:59:42,851 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:59:42,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:59:42,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:59:42,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:59:42,862 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:59:42,863 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:59:42,866 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:59:42,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:59:42,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:59:42,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:59:42,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:59:42,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:59:42,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:59:42,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:59:42,894 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:59:42,899 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:59:42,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:59:42,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:59:42,903 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:59:42,905 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:59:42,906 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:59:42,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:59:42,910 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:59:42,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:59:42,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:59:42,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:59:42,915 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:59:42,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:59:42,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:59:42,917 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:59:42,918 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:59:42,919 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:59:42,977 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:59:42,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:59:42,978 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:59:42,978 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:59:42,979 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:59:42,979 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:59:42,980 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:59:42,980 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:59:42,980 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:59:42,980 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:59:42,982 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:59:42,982 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:59:42,982 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:59:42,983 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:59:42,983 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:59:42,983 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:59:42,983 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:59:42,984 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:59:42,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:59:42,985 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:59:42,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:59:42,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:59:42,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:59:42,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:59:42,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:59:42,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:59:42,988 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:59:42,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:59:42,989 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:59:42,989 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:59:42,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:59:42,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:59:42,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:59:42,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:59:42,991 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:59:42,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:59:42,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:59:42,991 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:59:42,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:59:42,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:59:42,992 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:59:42,992 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_a7838b60-e0c4-46ea-9d22-cb72ef228574/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4fb36b23f327758af91661b12ca1735faf7949901dbd5c1543c17ea0384ceb9 [2022-11-19 07:59:43,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:59:43,326 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:59:43,329 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:59:43,331 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:59:43,331 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:59:43,333 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec11_product30.cil.c [2022-11-19 07:59:43,410 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/data/7fafa91b5/f9b05a74483442f789374f70f1f55f46/FLAG8fc09e0ca [2022-11-19 07:59:44,189 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:59:44,190 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/sv-benchmarks/c/product-lines/email_spec11_product30.cil.c [2022-11-19 07:59:44,222 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/data/7fafa91b5/f9b05a74483442f789374f70f1f55f46/FLAG8fc09e0ca [2022-11-19 07:59:44,360 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/data/7fafa91b5/f9b05a74483442f789374f70f1f55f46 [2022-11-19 07:59:44,364 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:59:44,366 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:59:44,368 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:59:44,368 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:59:44,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:59:44,373 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:44" (1/1) ... [2022-11-19 07:59:44,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7698ad7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:44, skipping insertion in model container [2022-11-19 07:59:44,375 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:44" (1/1) ... [2022-11-19 07:59:44,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:59:44,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:59:44,968 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_a7838b60-e0c4-46ea-9d22-cb72ef228574/sv-benchmarks/c/product-lines/email_spec11_product30.cil.c[29507,29520] [2022-11-19 07:59:45,131 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:59:45,142 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:59:45,203 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_a7838b60-e0c4-46ea-9d22-cb72ef228574/sv-benchmarks/c/product-lines/email_spec11_product30.cil.c[29507,29520] [2022-11-19 07:59:45,250 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:59:45,304 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:59:45,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:45 WrapperNode [2022-11-19 07:59:45,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:59:45,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:59:45,307 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:59:45,307 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:59:45,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:45" (1/1) ... [2022-11-19 07:59:45,362 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:45" (1/1) ... [2022-11-19 07:59:45,423 INFO L138 Inliner]: procedures = 131, calls = 217, calls flagged for inlining = 60, calls inlined = 50, statements flattened = 903 [2022-11-19 07:59:45,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:59:45,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:59:45,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:59:45,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:59:45,435 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:45" (1/1) ... [2022-11-19 07:59:45,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:45" (1/1) ... [2022-11-19 07:59:45,441 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:45" (1/1) ... [2022-11-19 07:59:45,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:45" (1/1) ... [2022-11-19 07:59:45,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:45" (1/1) ... [2022-11-19 07:59:45,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:45" (1/1) ... [2022-11-19 07:59:45,490 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:45" (1/1) ... [2022-11-19 07:59:45,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:45" (1/1) ... [2022-11-19 07:59:45,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:59:45,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:59:45,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:59:45,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:59:45,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:45" (1/1) ... [2022-11-19 07:59:45,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:59:45,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:59:45,554 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:59:45,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:59:45,618 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-19 07:59:45,619 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-19 07:59:45,619 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-19 07:59:45,619 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-19 07:59:45,620 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-19 07:59:45,620 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-19 07:59:45,620 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 07:59:45,621 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 07:59:45,621 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 07:59:45,621 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 07:59:45,621 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-19 07:59:45,622 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-19 07:59:45,622 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 07:59:45,622 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 07:59:45,622 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-19 07:59:45,622 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-19 07:59:45,623 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-19 07:59:45,623 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-19 07:59:45,623 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 07:59:45,623 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 07:59:45,624 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 07:59:45,624 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-19 07:59:45,624 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-19 07:59:45,624 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 07:59:45,624 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 07:59:45,625 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:59:45,625 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-19 07:59:45,626 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-19 07:59:45,626 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-19 07:59:45,626 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-19 07:59:45,628 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 07:59:45,629 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 07:59:45,629 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 07:59:45,629 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 07:59:45,630 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 07:59:45,630 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 07:59:45,630 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-19 07:59:45,630 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-19 07:59:45,630 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 07:59:45,631 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 07:59:45,631 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-19 07:59:45,631 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-19 07:59:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 07:59:45,632 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 07:59:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 07:59:45,633 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 07:59:45,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:59:45,635 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 07:59:45,636 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 07:59:45,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:59:45,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:59:45,918 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:59:45,921 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:59:47,010 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:59:47,593 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:59:47,593 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:59:47,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:47 BoogieIcfgContainer [2022-11-19 07:59:47,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:59:47,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:59:47,600 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:59:47,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:59:47,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:59:44" (1/3) ... [2022-11-19 07:59:47,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f8cee9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:47, skipping insertion in model container [2022-11-19 07:59:47,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:45" (2/3) ... [2022-11-19 07:59:47,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f8cee9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:47, skipping insertion in model container [2022-11-19 07:59:47,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:47" (3/3) ... [2022-11-19 07:59:47,607 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product30.cil.c [2022-11-19 07:59:47,628 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:59:47,628 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:59:47,729 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:59:47,737 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;@72ed9b27, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:59:47,737 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:59:47,741 INFO L276 IsEmpty]: Start isEmpty. Operand has 186 states, 109 states have (on average 1.3302752293577982) internal successors, (145), 113 states have internal predecessors, (145), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-19 07:59:47,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-19 07:59:47,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:47,764 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:47,765 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:59:47,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:47,773 INFO L85 PathProgramCache]: Analyzing trace with hash 1991215324, now seen corresponding path program 1 times [2022-11-19 07:59:47,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:47,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937574637] [2022-11-19 07:59:47,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:47,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:48,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:48,297 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:59:48,297 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:48,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937574637] [2022-11-19 07:59:48,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937574637] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:48,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:48,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:59:48,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482554137] [2022-11-19 07:59:48,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:48,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:59:48,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:48,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:59:48,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:59:48,344 INFO L87 Difference]: Start difference. First operand has 186 states, 109 states have (on average 1.3302752293577982) internal successors, (145), 113 states have internal predecessors, (145), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:59:48,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:48,576 INFO L93 Difference]: Finished difference Result 289 states and 376 transitions. [2022-11-19 07:59:48,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:59:48,579 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 88 [2022-11-19 07:59:48,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:48,596 INFO L225 Difference]: With dead ends: 289 [2022-11-19 07:59:48,596 INFO L226 Difference]: Without dead ends: 183 [2022-11-19 07:59:48,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:59:48,607 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:48,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 212 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:59:48,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-11-19 07:59:48,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 183. [2022-11-19 07:59:48,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 107 states have (on average 1.2990654205607477) internal successors, (139), 110 states have internal predecessors, (139), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-19 07:59:48,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 242 transitions. [2022-11-19 07:59:48,699 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 242 transitions. Word has length 88 [2022-11-19 07:59:48,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:48,700 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 242 transitions. [2022-11-19 07:59:48,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 20.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:59:48,701 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 242 transitions. [2022-11-19 07:59:48,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-19 07:59:48,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:48,706 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:48,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:59:48,707 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:59:48,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:48,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1126541311, now seen corresponding path program 1 times [2022-11-19 07:59:48,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:48,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868282211] [2022-11-19 07:59:48,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:48,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:48,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:49,168 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:59:49,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:49,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868282211] [2022-11-19 07:59:49,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868282211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:49,169 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:49,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:59:49,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796229760] [2022-11-19 07:59:49,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:49,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:59:49,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:49,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:59:49,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:59:49,173 INFO L87 Difference]: Start difference. First operand 183 states and 242 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:59:49,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:49,316 INFO L93 Difference]: Finished difference Result 285 states and 364 transitions. [2022-11-19 07:59:49,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:59:49,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 89 [2022-11-19 07:59:49,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:49,322 INFO L225 Difference]: With dead ends: 285 [2022-11-19 07:59:49,322 INFO L226 Difference]: Without dead ends: 185 [2022-11-19 07:59:49,331 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 07:59:49,333 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 0 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:49,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 417 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:59:49,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-11-19 07:59:49,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-11-19 07:59:49,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 109 states have (on average 1.2935779816513762) internal successors, (141), 112 states have internal predecessors, (141), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-19 07:59:49,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 244 transitions. [2022-11-19 07:59:49,367 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 244 transitions. Word has length 89 [2022-11-19 07:59:49,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:49,367 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 244 transitions. [2022-11-19 07:59:49,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:59:49,368 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 244 transitions. [2022-11-19 07:59:49,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-19 07:59:49,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:49,376 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:49,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:59:49,378 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:59:49,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:49,383 INFO L85 PathProgramCache]: Analyzing trace with hash 468194357, now seen corresponding path program 1 times [2022-11-19 07:59:49,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:49,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335872644] [2022-11-19 07:59:49,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:49,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:49,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:49,655 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:59:49,656 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:49,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335872644] [2022-11-19 07:59:49,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335872644] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:49,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:59:49,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:59:49,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774732734] [2022-11-19 07:59:49,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:49,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:59:49,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:49,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:59:49,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:59:49,663 INFO L87 Difference]: Start difference. First operand 185 states and 244 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:59:49,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:59:49,849 INFO L93 Difference]: Finished difference Result 400 states and 547 transitions. [2022-11-19 07:59:49,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:59:49,850 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 94 [2022-11-19 07:59:49,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:59:49,857 INFO L225 Difference]: With dead ends: 400 [2022-11-19 07:59:49,858 INFO L226 Difference]: Without dead ends: 233 [2022-11-19 07:59:49,862 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 07:59:49,868 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 57 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:59:49,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 429 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:59:49,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-11-19 07:59:49,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 228. [2022-11-19 07:59:49,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 141 states have (on average 1.375886524822695) internal successors, (194), 144 states have internal predecessors, (194), 63 states have call successors, (63), 23 states have call predecessors, (63), 23 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-11-19 07:59:49,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 319 transitions. [2022-11-19 07:59:49,913 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 319 transitions. Word has length 94 [2022-11-19 07:59:49,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:59:49,913 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 319 transitions. [2022-11-19 07:59:49,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:59:49,914 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 319 transitions. [2022-11-19 07:59:49,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-19 07:59:49,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:59:49,922 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:59:49,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:59:49,922 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:59:49,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:59:49,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1757014210, now seen corresponding path program 1 times [2022-11-19 07:59:49,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:59:49,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431161308] [2022-11-19 07:59:49,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:49,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:59:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:50,227 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:59:50,227 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:59:50,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431161308] [2022-11-19 07:59:50,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431161308] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:59:50,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031473819] [2022-11-19 07:59:50,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:59:50,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:59:50,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:59:50,232 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:59:50,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:59:50,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:59:50,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 1143 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:59:50,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:59:50,755 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:59:50,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:59:50,878 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 07:59:50,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031473819] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:59:50,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1684202631] [2022-11-19 07:59:50,907 INFO L159 IcfgInterpreter]: Started Sifa with 74 locations of interest [2022-11-19 07:59:50,911 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:59:50,916 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:59:50,922 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:59:50,923 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:00:34,892 INFO L197 IcfgInterpreter]: Interpreting procedure setClientId with input of size 444 for LOIs [2022-11-19 08:00:35,250 INFO L197 IcfgInterpreter]: Interpreting procedure setClientPrivateKey with input of size 441 for LOIs [2022-11-19 08:00:35,657 INFO L197 IcfgInterpreter]: Interpreting procedure sendEmail with input of size 477 for LOIs [2022-11-19 08:00:46,590 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:00:46,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:00:46,783 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostconditionCall(PredicateTransformer.java:157) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.postCall(SymbolicTools.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:218) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:207) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-19 08:00:46,789 INFO L158 Benchmark]: Toolchain (without parser) took 62421.63ms. Allocated memory was 127.9MB in the beginning and 478.2MB in the end (delta: 350.2MB). Free memory was 104.6MB in the beginning and 367.7MB in the end (delta: -263.1MB). Peak memory consumption was 302.4MB. Max. memory is 16.1GB. [2022-11-19 08:00:46,790 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 127.9MB. Free memory was 82.5MB in the beginning and 82.5MB in the end (delta: 75.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:00:46,791 INFO L158 Benchmark]: CACSL2BoogieTranslator took 938.04ms. Allocated memory is still 127.9MB. Free memory was 104.5MB in the beginning and 75.6MB in the end (delta: 28.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-19 08:00:46,791 INFO L158 Benchmark]: Boogie Procedure Inliner took 117.61ms. Allocated memory is still 127.9MB. Free memory was 75.1MB in the beginning and 69.7MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-19 08:00:46,792 INFO L158 Benchmark]: Boogie Preprocessor took 86.37ms. Allocated memory is still 127.9MB. Free memory was 69.7MB in the beginning and 65.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-19 08:00:46,792 INFO L158 Benchmark]: RCFGBuilder took 2084.01ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 65.1MB in the beginning and 108.2MB in the end (delta: -43.1MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. [2022-11-19 08:00:46,793 INFO L158 Benchmark]: TraceAbstraction took 59187.55ms. Allocated memory was 155.2MB in the beginning and 478.2MB in the end (delta: 323.0MB). Free memory was 108.2MB in the beginning and 367.7MB in the end (delta: -259.5MB). Peak memory consumption was 278.9MB. Max. memory is 16.1GB. [2022-11-19 08:00:46,795 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 127.9MB. Free memory was 82.5MB in the beginning and 82.5MB in the end (delta: 75.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 938.04ms. Allocated memory is still 127.9MB. Free memory was 104.5MB in the beginning and 75.6MB in the end (delta: 28.9MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 117.61ms. Allocated memory is still 127.9MB. Free memory was 75.1MB in the beginning and 69.7MB in the end (delta: 5.4MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 86.37ms. Allocated memory is still 127.9MB. Free memory was 69.7MB in the beginning and 65.6MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 2084.01ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 65.1MB in the beginning and 108.2MB in the end (delta: -43.1MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. * TraceAbstraction took 59187.55ms. Allocated memory was 155.2MB in the beginning and 478.2MB in the end (delta: 323.0MB). Free memory was 108.2MB in the beginning and 367.7MB in the end (delta: -259.5MB). Peak memory consumption was 278.9MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-19 08:00:46,830 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/email_spec11_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 e4fb36b23f327758af91661b12ca1735faf7949901dbd5c1543c17ea0384ceb9 --- 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 08:00:49,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:00:49,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:00:49,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:00:49,595 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:00:49,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:00:49,602 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:00:49,604 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:00:49,606 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:00:49,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:00:49,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:00:49,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:00:49,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:00:49,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:00:49,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:00:49,622 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:00:49,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:00:49,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:00:49,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:00:49,636 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:00:49,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:00:49,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:00:49,652 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:00:49,653 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:00:49,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:00:49,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:00:49,659 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:00:49,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:00:49,660 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:00:49,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:00:49,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:00:49,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:00:49,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:00:49,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:00:49,680 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:00:49,680 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:00:49,681 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:00:49,682 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:00:49,682 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:00:49,684 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:00:49,685 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:00:49,692 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 08:00:49,762 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:00:49,762 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:00:49,763 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:00:49,763 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:00:49,764 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:00:49,765 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:00:49,765 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:00:49,766 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:00:49,766 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:00:49,766 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:00:49,767 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:00:49,768 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:00:49,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:00:49,770 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:00:49,770 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:00:49,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:00:49,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:00:49,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:00:49,772 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:00:49,772 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 08:00:49,772 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 08:00:49,773 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 08:00:49,773 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:00:49,773 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:00:49,774 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:00:49,774 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:00:49,774 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:00:49,774 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 08:00:49,775 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:00:49,775 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:00:49,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:00:49,776 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:00:49,776 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:00:49,777 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 08:00:49,777 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 08:00:49,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:00:49,778 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:00:49,778 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 08:00:49,779 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_a7838b60-e0c4-46ea-9d22-cb72ef228574/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4fb36b23f327758af91661b12ca1735faf7949901dbd5c1543c17ea0384ceb9 [2022-11-19 08:00:50,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:00:50,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:00:50,300 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:00:50,302 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:00:50,303 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:00:50,305 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/email_spec11_product30.cil.c [2022-11-19 08:00:50,387 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/data/bed859f5f/a3b5a66f6ac041bab35c34f5657d6e99/FLAG9ef42bbc0 [2022-11-19 08:00:51,219 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:00:51,227 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/sv-benchmarks/c/product-lines/email_spec11_product30.cil.c [2022-11-19 08:00:51,258 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/data/bed859f5f/a3b5a66f6ac041bab35c34f5657d6e99/FLAG9ef42bbc0 [2022-11-19 08:00:51,357 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/data/bed859f5f/a3b5a66f6ac041bab35c34f5657d6e99 [2022-11-19 08:00:51,360 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:00:51,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:00:51,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:00:51,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:00:51,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:00:51,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:51" (1/1) ... [2022-11-19 08:00:51,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c7c5bb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:51, skipping insertion in model container [2022-11-19 08:00:51,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:51" (1/1) ... [2022-11-19 08:00:51,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:00:51,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:00:52,110 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_a7838b60-e0c4-46ea-9d22-cb72ef228574/sv-benchmarks/c/product-lines/email_spec11_product30.cil.c[29507,29520] [2022-11-19 08:00:52,299 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:00:52,318 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-19 08:00:52,356 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:00:52,451 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_a7838b60-e0c4-46ea-9d22-cb72ef228574/sv-benchmarks/c/product-lines/email_spec11_product30.cil.c[29507,29520] [2022-11-19 08:00:52,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:00:52,556 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:00:52,626 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_a7838b60-e0c4-46ea-9d22-cb72ef228574/sv-benchmarks/c/product-lines/email_spec11_product30.cil.c[29507,29520] [2022-11-19 08:00:52,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:00:52,722 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:00:52,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:52 WrapperNode [2022-11-19 08:00:52,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:00:52,724 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:00:52,724 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:00:52,724 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:00:52,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:52" (1/1) ... [2022-11-19 08:00:52,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:52" (1/1) ... [2022-11-19 08:00:52,846 INFO L138 Inliner]: procedures = 133, calls = 217, calls flagged for inlining = 60, calls inlined = 50, statements flattened = 855 [2022-11-19 08:00:52,847 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:00:52,848 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:00:52,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:00:52,848 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:00:52,859 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:52" (1/1) ... [2022-11-19 08:00:52,859 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:52" (1/1) ... [2022-11-19 08:00:52,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:52" (1/1) ... [2022-11-19 08:00:52,867 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:52" (1/1) ... [2022-11-19 08:00:52,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:52" (1/1) ... [2022-11-19 08:00:52,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:52" (1/1) ... [2022-11-19 08:00:52,916 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:52" (1/1) ... [2022-11-19 08:00:52,920 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:52" (1/1) ... [2022-11-19 08:00:52,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:00:52,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:00:52,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:00:52,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:00:52,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:52" (1/1) ... [2022-11-19 08:00:52,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:00:52,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:00:52,982 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:00:53,007 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:00:53,039 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2022-11-19 08:00:53,039 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2022-11-19 08:00:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-11-19 08:00:53,040 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-11-19 08:00:53,040 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-11-19 08:00:53,040 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-11-19 08:00:53,041 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-11-19 08:00:53,041 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-11-19 08:00:53,041 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-11-19 08:00:53,041 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-11-19 08:00:53,041 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2022-11-19 08:00:53,042 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2022-11-19 08:00:53,042 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-11-19 08:00:53,042 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-11-19 08:00:53,042 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-11-19 08:00:53,042 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-11-19 08:00:53,043 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2022-11-19 08:00:53,043 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2022-11-19 08:00:53,043 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-11-19 08:00:53,043 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-11-19 08:00:53,043 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-11-19 08:00:53,044 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-11-19 08:00:53,044 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-11-19 08:00:53,044 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-11-19 08:00:53,044 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-11-19 08:00:53,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:00:53,045 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2022-11-19 08:00:53,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2022-11-19 08:00:53,046 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2022-11-19 08:00:53,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2022-11-19 08:00:53,047 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-11-19 08:00:53,047 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-11-19 08:00:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-11-19 08:00:53,048 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-11-19 08:00:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-11-19 08:00:53,048 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-11-19 08:00:53,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 08:00:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2022-11-19 08:00:53,049 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2022-11-19 08:00:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-11-19 08:00:53,049 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-11-19 08:00:53,049 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-11-19 08:00:53,050 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-11-19 08:00:53,050 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-11-19 08:00:53,050 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-11-19 08:00:53,052 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-11-19 08:00:53,052 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-11-19 08:00:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-11-19 08:00:53,054 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-11-19 08:00:53,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:00:53,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:00:53,344 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:00:53,347 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:00:54,629 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:00:54,641 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:00:54,642 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:00:54,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:54 BoogieIcfgContainer [2022-11-19 08:00:54,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:00:54,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:00:54,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:00:54,652 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:00:54,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:00:51" (1/3) ... [2022-11-19 08:00:54,654 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4908523d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:54, skipping insertion in model container [2022-11-19 08:00:54,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:52" (2/3) ... [2022-11-19 08:00:54,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4908523d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:54, skipping insertion in model container [2022-11-19 08:00:54,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:54" (3/3) ... [2022-11-19 08:00:54,656 INFO L112 eAbstractionObserver]: Analyzing ICFG email_spec11_product30.cil.c [2022-11-19 08:00:54,680 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:00:54,680 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:00:54,754 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:00:54,762 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;@559a0a4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:00:54,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:00:54,769 INFO L276 IsEmpty]: Start isEmpty. Operand has 344 states, 267 states have (on average 1.5168539325842696) internal successors, (405), 271 states have internal predecessors, (405), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-11-19 08:00:54,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-19 08:00:54,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:00:54,799 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:54,800 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:00:54,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:00:54,806 INFO L85 PathProgramCache]: Analyzing trace with hash 2096847665, now seen corresponding path program 1 times [2022-11-19 08:00:54,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:00:54,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1979963077] [2022-11-19 08:00:54,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:00:54,824 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 08:00:54,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:00:54,826 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:00:54,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:00:55,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:00:55,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 622 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 08:00:55,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:00:55,535 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2022-11-19 08:00:55,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:00:55,536 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:00:55,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1979963077] [2022-11-19 08:00:55,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1979963077] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:00:55,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:00:55,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:00:55,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505626058] [2022-11-19 08:00:55,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:00:55,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:00:55,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:00:55,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:00:55,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:00:55,603 INFO L87 Difference]: Start difference. First operand has 344 states, 267 states have (on average 1.5168539325842696) internal successors, (405), 271 states have internal predecessors, (405), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:00:55,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:00:55,739 INFO L93 Difference]: Finished difference Result 534 states and 772 transitions. [2022-11-19 08:00:55,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:00:55,744 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 139 [2022-11-19 08:00:55,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:00:55,775 INFO L225 Difference]: With dead ends: 534 [2022-11-19 08:00:55,775 INFO L226 Difference]: Without dead ends: 337 [2022-11-19 08:00:55,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 138 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 08:00:55,796 INFO L413 NwaCegarLoop]: 505 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, 505 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 08:00:55,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:00:55,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-11-19 08:00:55,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2022-11-19 08:00:55,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 261 states have (on average 1.5095785440613028) internal successors, (394), 264 states have internal predecessors, (394), 52 states have call successors, (52), 23 states have call predecessors, (52), 23 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-19 08:00:55,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 497 transitions. [2022-11-19 08:00:55,903 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 497 transitions. Word has length 139 [2022-11-19 08:00:55,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:00:55,906 INFO L495 AbstractCegarLoop]: Abstraction has 337 states and 497 transitions. [2022-11-19 08:00:55,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.5) internal successors, (73), 2 states have internal predecessors, (73), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:00:55,906 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 497 transitions. [2022-11-19 08:00:55,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-11-19 08:00:55,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:00:55,915 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:55,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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)] Ended with exit code 0 [2022-11-19 08:00:56,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:00:56,135 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:00:56,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:00:56,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1596088140, now seen corresponding path program 1 times [2022-11-19 08:00:56,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:00:56,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155740356] [2022-11-19 08:00:56,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:00:56,138 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 08:00:56,138 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:00:56,140 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:00:56,142 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:00:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:00:56,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 08:00:56,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:00:56,897 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-19 08:00:56,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:00:56,898 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:00:56,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155740356] [2022-11-19 08:00:56,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155740356] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:00:56,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:00:56,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:00:56,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468750188] [2022-11-19 08:00:56,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:00:56,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:00:56,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:00:56,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:00:56,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:00:56,914 INFO L87 Difference]: Start difference. First operand 337 states and 497 transitions. Second operand has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 08:00:57,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:00:57,111 INFO L93 Difference]: Finished difference Result 665 states and 984 transitions. [2022-11-19 08:00:57,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:00:57,113 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 140 [2022-11-19 08:00:57,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:00:57,124 INFO L225 Difference]: With dead ends: 665 [2022-11-19 08:00:57,124 INFO L226 Difference]: Without dead ends: 339 [2022-11-19 08:00:57,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:00:57,129 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 125 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:00:57,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 1807 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:00:57,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-11-19 08:00:57,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 339. [2022-11-19 08:00:57,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 262 states have (on average 1.5076335877862594) internal successors, (395), 266 states have internal predecessors, (395), 52 states have call successors, (52), 23 states have call predecessors, (52), 24 states have return successors, (53), 51 states have call predecessors, (53), 51 states have call successors, (53) [2022-11-19 08:00:57,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 500 transitions. [2022-11-19 08:00:57,197 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 500 transitions. Word has length 140 [2022-11-19 08:00:57,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:00:57,200 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 500 transitions. [2022-11-19 08:00:57,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 20.75) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 08:00:57,200 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 500 transitions. [2022-11-19 08:00:57,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-19 08:00:57,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:00:57,209 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:57,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:00:57,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:00:57,423 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:00:57,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:00:57,425 INFO L85 PathProgramCache]: Analyzing trace with hash -161977881, now seen corresponding path program 1 times [2022-11-19 08:00:57,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:00:57,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1182432547] [2022-11-19 08:00:57,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:00:57,426 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 08:00:57,426 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:00:57,433 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:00:57,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:00:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:00:57,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 08:00:57,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:00:57,989 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-19 08:00:57,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:00:57,990 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:00:57,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1182432547] [2022-11-19 08:00:57,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1182432547] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:00:57,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:00:57,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:00:57,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563911154] [2022-11-19 08:00:57,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:00:57,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:00:57,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:00:57,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:00:57,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:00:57,994 INFO L87 Difference]: Start difference. First operand 339 states and 500 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 08:00:58,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:00:58,147 INFO L93 Difference]: Finished difference Result 667 states and 988 transitions. [2022-11-19 08:00:58,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:00:58,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 141 [2022-11-19 08:00:58,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:00:58,154 INFO L225 Difference]: With dead ends: 667 [2022-11-19 08:00:58,154 INFO L226 Difference]: Without dead ends: 341 [2022-11-19 08:00:58,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:00:58,159 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 124 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 1796 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:00:58,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 1796 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:00:58,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-11-19 08:00:58,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2022-11-19 08:00:58,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 263 states have (on average 1.505703422053232) internal successors, (396), 268 states have internal predecessors, (396), 52 states have call successors, (52), 23 states have call predecessors, (52), 25 states have return successors, (57), 51 states have call predecessors, (57), 51 states have call successors, (57) [2022-11-19 08:00:58,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 505 transitions. [2022-11-19 08:00:58,220 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 505 transitions. Word has length 141 [2022-11-19 08:00:58,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:00:58,221 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 505 transitions. [2022-11-19 08:00:58,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 08:00:58,222 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 505 transitions. [2022-11-19 08:00:58,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-11-19 08:00:58,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:00:58,233 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:58,257 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:00:58,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:00:58,451 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:00:58,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:00:58,452 INFO L85 PathProgramCache]: Analyzing trace with hash 314622091, now seen corresponding path program 1 times [2022-11-19 08:00:58,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:00:58,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988978771] [2022-11-19 08:00:58,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:00:58,454 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 08:00:58,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:00:58,456 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:00:58,462 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:00:58,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:00:58,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 625 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 08:00:58,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:00:58,980 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-19 08:00:58,980 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:00:58,986 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:00:58,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [988978771] [2022-11-19 08:00:58,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [988978771] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:00:58,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:00:58,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:00:58,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259832390] [2022-11-19 08:00:58,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:00:58,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:00:58,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:00:58,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:00:58,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:00:58,996 INFO L87 Difference]: Start difference. First operand 341 states and 505 transitions. Second operand has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 08:00:59,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:00:59,122 INFO L93 Difference]: Finished difference Result 659 states and 978 transitions. [2022-11-19 08:00:59,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:00:59,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 142 [2022-11-19 08:00:59,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:00:59,127 INFO L225 Difference]: With dead ends: 659 [2022-11-19 08:00:59,127 INFO L226 Difference]: Without dead ends: 341 [2022-11-19 08:00:59,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:00:59,136 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 123 mSDsluCounter, 1322 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:00:59,137 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1810 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:00:59,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2022-11-19 08:00:59,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2022-11-19 08:00:59,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 263 states have (on average 1.505703422053232) internal successors, (396), 268 states have internal predecessors, (396), 52 states have call successors, (52), 23 states have call predecessors, (52), 25 states have return successors, (56), 51 states have call predecessors, (56), 51 states have call successors, (56) [2022-11-19 08:00:59,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 504 transitions. [2022-11-19 08:00:59,183 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 504 transitions. Word has length 142 [2022-11-19 08:00:59,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:00:59,184 INFO L495 AbstractCegarLoop]: Abstraction has 341 states and 504 transitions. [2022-11-19 08:00:59,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 08:00:59,185 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 504 transitions. [2022-11-19 08:00:59,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-19 08:00:59,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:00:59,190 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:59,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:00:59,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:00:59,409 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:00:59,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:00:59,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1115709792, now seen corresponding path program 2 times [2022-11-19 08:00:59,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:00:59,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [189204843] [2022-11-19 08:00:59,411 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 08:00:59,411 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 08:00:59,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:00:59,413 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:00:59,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:00:59,750 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-19 08:00:59,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:00:59,761 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:00:59,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:00:59,799 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-19 08:00:59,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:00:59,800 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:00:59,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [189204843] [2022-11-19 08:00:59,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [189204843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:00:59,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:00:59,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:00:59,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253964746] [2022-11-19 08:00:59,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:00:59,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:00:59,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:00:59,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:00:59,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:00:59,805 INFO L87 Difference]: Start difference. First operand 341 states and 504 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:00:59,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:00:59,854 INFO L93 Difference]: Finished difference Result 528 states and 760 transitions. [2022-11-19 08:00:59,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:00:59,855 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 143 [2022-11-19 08:00:59,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:00:59,858 INFO L225 Difference]: With dead ends: 528 [2022-11-19 08:00:59,859 INFO L226 Difference]: Without dead ends: 344 [2022-11-19 08:00:59,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 141 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 08:00:59,861 INFO L413 NwaCegarLoop]: 495 mSDtfsCounter, 1 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 988 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 08:00:59,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 988 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:00:59,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2022-11-19 08:00:59,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 343. [2022-11-19 08:00:59,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 265 states have (on average 1.5018867924528303) internal successors, (398), 270 states have internal predecessors, (398), 52 states have call successors, (52), 23 states have call predecessors, (52), 25 states have return successors, (56), 51 states have call predecessors, (56), 51 states have call successors, (56) [2022-11-19 08:00:59,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 506 transitions. [2022-11-19 08:00:59,893 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 506 transitions. Word has length 143 [2022-11-19 08:00:59,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:00:59,894 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 506 transitions. [2022-11-19 08:00:59,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:00:59,894 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 506 transitions. [2022-11-19 08:00:59,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-11-19 08:00:59,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:00:59,898 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:00:59,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:00,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:00,120 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:01:00,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:00,121 INFO L85 PathProgramCache]: Analyzing trace with hash -272444816, now seen corresponding path program 1 times [2022-11-19 08:01:00,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:01:00,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1087173186] [2022-11-19 08:01:00,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:00,122 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 08:01:00,122 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:01:00,124 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:00,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:00,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 641 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 08:01:00,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:01:00,579 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-19 08:01:00,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:01:00,580 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:01:00,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1087173186] [2022-11-19 08:01:00,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1087173186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:00,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:01:00,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:01:00,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945415468] [2022-11-19 08:01:00,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:00,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:01:00,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:01:00,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:01:00,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:01:00,584 INFO L87 Difference]: Start difference. First operand 343 states and 506 transitions. Second operand has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 08:01:00,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:00,703 INFO L93 Difference]: Finished difference Result 665 states and 985 transitions. [2022-11-19 08:01:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:01:00,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 152 [2022-11-19 08:01:00,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:00,707 INFO L225 Difference]: With dead ends: 665 [2022-11-19 08:01:00,708 INFO L226 Difference]: Without dead ends: 345 [2022-11-19 08:01:00,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:01:00,710 INFO L413 NwaCegarLoop]: 489 mSDtfsCounter, 121 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1812 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:00,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1812 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:01:00,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-11-19 08:01:00,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2022-11-19 08:01:00,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 266 states have (on average 1.5) internal successors, (399), 272 states have internal predecessors, (399), 52 states have call successors, (52), 23 states have call predecessors, (52), 26 states have return successors, (58), 51 states have call predecessors, (58), 51 states have call successors, (58) [2022-11-19 08:01:00,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 509 transitions. [2022-11-19 08:01:00,739 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 509 transitions. Word has length 152 [2022-11-19 08:01:00,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:00,740 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 509 transitions. [2022-11-19 08:01:00,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 23.25) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 08:01:00,741 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 509 transitions. [2022-11-19 08:01:00,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-19 08:01:00,744 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:00,744 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:00,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:00,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:00,962 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:01:00,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:00,962 INFO L85 PathProgramCache]: Analyzing trace with hash -835868214, now seen corresponding path program 1 times [2022-11-19 08:01:00,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:01:00,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1630653813] [2022-11-19 08:01:00,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:00,963 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 08:01:00,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:01:00,965 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:00,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:01,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:01,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 642 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 08:01:01,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:01:01,407 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-19 08:01:01,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:01:01,408 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:01:01,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1630653813] [2022-11-19 08:01:01,408 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1630653813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:01,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:01:01,409 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:01:01,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400530182] [2022-11-19 08:01:01,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:01,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:01:01,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:01:01,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:01:01,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:01:01,411 INFO L87 Difference]: Start difference. First operand 345 states and 509 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 08:01:01,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:01,524 INFO L93 Difference]: Finished difference Result 663 states and 980 transitions. [2022-11-19 08:01:01,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:01:01,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 153 [2022-11-19 08:01:01,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:01,528 INFO L225 Difference]: With dead ends: 663 [2022-11-19 08:01:01,528 INFO L226 Difference]: Without dead ends: 345 [2022-11-19 08:01:01,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:01:01,530 INFO L413 NwaCegarLoop]: 486 mSDtfsCounter, 122 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:01,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 1799 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:01:01,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-11-19 08:01:01,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 345. [2022-11-19 08:01:01,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 266 states have (on average 1.5) internal successors, (399), 272 states have internal predecessors, (399), 52 states have call successors, (52), 23 states have call predecessors, (52), 26 states have return successors, (57), 51 states have call predecessors, (57), 51 states have call successors, (57) [2022-11-19 08:01:01,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 508 transitions. [2022-11-19 08:01:01,571 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 508 transitions. Word has length 153 [2022-11-19 08:01:01,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:01,572 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 508 transitions. [2022-11-19 08:01:01,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 08:01:01,572 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 508 transitions. [2022-11-19 08:01:01,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-19 08:01:01,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:01,576 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:01,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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)] Forceful destruction successful, exit code 0 [2022-11-19 08:01:01,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:01,793 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:01:01,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:01,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1497649360, now seen corresponding path program 2 times [2022-11-19 08:01:01,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:01:01,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81743369] [2022-11-19 08:01:01,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 08:01:01,794 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 08:01:01,795 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:01:01,795 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:01,797 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 (9)] Waiting until timeout for monitored process [2022-11-19 08:01:02,188 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 08:01:02,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:01:02,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 08:01:02,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:01:02,590 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-19 08:01:02,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:01:03,168 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-19 08:01:03,168 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:01:03,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81743369] [2022-11-19 08:01:03,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81743369] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:01:03,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1297090368] [2022-11-19 08:01:03,169 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 08:01:03,169 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:01:03,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:01:03,175 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:01:03,208 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2022-11-19 08:01:03,774 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 08:01:03,774 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:01:03,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:01:03,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:01:03,824 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-19 08:01:03,824 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:01:03,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1297090368] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:03,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-19 08:01:03,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9, 9] total 17 [2022-11-19 08:01:03,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755318752] [2022-11-19 08:01:03,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:03,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:01:03,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:01:03,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:01:03,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-11-19 08:01:03,827 INFO L87 Difference]: Start difference. First operand 345 states and 508 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:01:03,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:03,879 INFO L93 Difference]: Finished difference Result 716 states and 1070 transitions. [2022-11-19 08:01:03,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:01:03,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 154 [2022-11-19 08:01:03,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:03,883 INFO L225 Difference]: With dead ends: 716 [2022-11-19 08:01:03,883 INFO L226 Difference]: Without dead ends: 402 [2022-11-19 08:01:03,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2022-11-19 08:01:03,885 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 107 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:03,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 968 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:01:03,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-11-19 08:01:03,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 394. [2022-11-19 08:01:03,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 304 states have (on average 1.5164473684210527) internal successors, (461), 310 states have internal predecessors, (461), 63 states have call successors, (63), 23 states have call predecessors, (63), 26 states have return successors, (69), 62 states have call predecessors, (69), 62 states have call successors, (69) [2022-11-19 08:01:03,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 593 transitions. [2022-11-19 08:01:03,927 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 593 transitions. Word has length 154 [2022-11-19 08:01:03,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:03,928 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 593 transitions. [2022-11-19 08:01:03,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:01:03,928 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 593 transitions. [2022-11-19 08:01:03,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-19 08:01:03,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:03,932 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:03,939 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (10)] Forceful destruction successful, exit code 0 [2022-11-19 08:01:04,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 (9)] Forceful destruction successful, exit code 0 [2022-11-19 08:01:04,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:04,338 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:01:04,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:04,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1163324813, now seen corresponding path program 1 times [2022-11-19 08:01:04,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:01:04,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [817548041] [2022-11-19 08:01:04,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:04,340 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 08:01:04,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:01:04,341 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:04,359 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 (11)] Waiting until timeout for monitored process [2022-11-19 08:01:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:04,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 645 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 08:01:04,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:01:04,843 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-11-19 08:01:04,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:01:04,843 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:01:04,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [817548041] [2022-11-19 08:01:04,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [817548041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:04,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:01:04,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:01:04,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740157086] [2022-11-19 08:01:04,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:04,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:01:04,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:01:04,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:01:04,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:01:04,848 INFO L87 Difference]: Start difference. First operand 394 states and 593 transitions. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 08:01:05,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:05,001 INFO L93 Difference]: Finished difference Result 763 states and 1156 transitions. [2022-11-19 08:01:05,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:01:05,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 155 [2022-11-19 08:01:05,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:05,005 INFO L225 Difference]: With dead ends: 763 [2022-11-19 08:01:05,005 INFO L226 Difference]: Without dead ends: 396 [2022-11-19 08:01:05,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:01:05,009 INFO L413 NwaCegarLoop]: 487 mSDtfsCounter, 120 mSDsluCounter, 1314 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:05,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 1801 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:01:05,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-11-19 08:01:05,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 396. [2022-11-19 08:01:05,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 305 states have (on average 1.5147540983606558) internal successors, (462), 312 states have internal predecessors, (462), 63 states have call successors, (63), 23 states have call predecessors, (63), 27 states have return successors, (74), 62 states have call predecessors, (74), 62 states have call successors, (74) [2022-11-19 08:01:05,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 599 transitions. [2022-11-19 08:01:05,050 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 599 transitions. Word has length 155 [2022-11-19 08:01:05,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:05,051 INFO L495 AbstractCegarLoop]: Abstraction has 396 states and 599 transitions. [2022-11-19 08:01:05,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 states have internal predecessors, (93), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 08:01:05,052 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 599 transitions. [2022-11-19 08:01:05,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-19 08:01:05,055 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:05,056 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:05,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 (11)] Forceful destruction successful, exit code 0 [2022-11-19 08:01:05,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:05,273 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:01:05,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:05,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1415791506, now seen corresponding path program 1 times [2022-11-19 08:01:05,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:01:05,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2052558505] [2022-11-19 08:01:05,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:05,274 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 08:01:05,274 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:01:05,276 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:05,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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)] Waiting until timeout for monitored process [2022-11-19 08:01:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:05,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:01:05,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:01:05,805 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-11-19 08:01:05,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:01:05,806 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:01:05,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2052558505] [2022-11-19 08:01:05,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2052558505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:05,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:01:05,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:01:05,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531734493] [2022-11-19 08:01:05,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:05,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:01:05,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:01:05,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:01:05,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:01:05,809 INFO L87 Difference]: Start difference. First operand 396 states and 599 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 08:01:06,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:06,028 INFO L93 Difference]: Finished difference Result 902 states and 1386 transitions. [2022-11-19 08:01:06,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:01:06,030 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 156 [2022-11-19 08:01:06,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:06,034 INFO L225 Difference]: With dead ends: 902 [2022-11-19 08:01:06,034 INFO L226 Difference]: Without dead ends: 535 [2022-11-19 08:01:06,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 153 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 08:01:06,037 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 575 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 1166 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:06,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [575 Valid, 1166 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:01:06,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2022-11-19 08:01:06,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 404. [2022-11-19 08:01:06,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 312 states have (on average 1.5) internal successors, (468), 318 states have internal predecessors, (468), 63 states have call successors, (63), 25 states have call predecessors, (63), 28 states have return successors, (70), 62 states have call predecessors, (70), 62 states have call successors, (70) [2022-11-19 08:01:06,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 601 transitions. [2022-11-19 08:01:06,092 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 601 transitions. Word has length 156 [2022-11-19 08:01:06,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:06,093 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 601 transitions. [2022-11-19 08:01:06,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 3 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 08:01:06,093 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 601 transitions. [2022-11-19 08:01:06,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-19 08:01:06,097 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:06,097 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:06,125 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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)] Forceful destruction successful, exit code 0 [2022-11-19 08:01:06,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:06,315 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:01:06,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:06,316 INFO L85 PathProgramCache]: Analyzing trace with hash 5962730, now seen corresponding path program 1 times [2022-11-19 08:01:06,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:01:06,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1670605923] [2022-11-19 08:01:06,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:06,317 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 08:01:06,317 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:01:06,318 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:06,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:06,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:06,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 643 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:01:06,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:01:06,749 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-19 08:01:06,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:01:06,750 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:01:06,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1670605923] [2022-11-19 08:01:06,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1670605923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:06,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:01:06,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:01:06,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568641575] [2022-11-19 08:01:06,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:06,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:01:06,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:01:06,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:01:06,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:01:06,753 INFO L87 Difference]: Start difference. First operand 404 states and 601 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:01:06,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:06,845 INFO L93 Difference]: Finished difference Result 888 states and 1360 transitions. [2022-11-19 08:01:06,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:01:06,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 157 [2022-11-19 08:01:06,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:06,850 INFO L225 Difference]: With dead ends: 888 [2022-11-19 08:01:06,851 INFO L226 Difference]: Without dead ends: 525 [2022-11-19 08:01:06,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 155 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 08:01:06,853 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 101 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:06,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1005 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:01:06,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2022-11-19 08:01:06,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 517. [2022-11-19 08:01:06,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 400 states have (on average 1.535) internal successors, (614), 406 states have internal predecessors, (614), 88 states have call successors, (88), 25 states have call predecessors, (88), 28 states have return successors, (99), 87 states have call predecessors, (99), 87 states have call successors, (99) [2022-11-19 08:01:06,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 801 transitions. [2022-11-19 08:01:06,934 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 801 transitions. Word has length 157 [2022-11-19 08:01:06,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:06,935 INFO L495 AbstractCegarLoop]: Abstraction has 517 states and 801 transitions. [2022-11-19 08:01:06,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:01:06,935 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 801 transitions. [2022-11-19 08:01:06,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-19 08:01:06,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:06,940 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:06,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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)] Forceful destruction successful, exit code 0 [2022-11-19 08:01:07,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:07,159 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:01:07,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:07,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1744445606, now seen corresponding path program 1 times [2022-11-19 08:01:07,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:01:07,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [398766939] [2022-11-19 08:01:07,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:07,161 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 08:01:07,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:01:07,162 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:07,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 (14)] Waiting until timeout for monitored process [2022-11-19 08:01:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:07,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:01:07,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:01:07,616 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-19 08:01:07,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:01:07,757 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-19 08:01:07,758 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:01:07,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [398766939] [2022-11-19 08:01:07,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [398766939] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:01:07,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [887213109] [2022-11-19 08:01:07,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:07,758 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:01:07,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:01:07,760 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:01:07,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-19 08:01:08,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:08,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 08:01:08,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:01:08,536 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-19 08:01:08,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:01:09,063 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-19 08:01:09,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [887213109] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:01:09,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [932308294] [2022-11-19 08:01:09,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:09,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:01:09,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:01:09,071 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:01:09,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-19 08:01:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:09,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-19 08:01:09,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:01:09,592 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-11-19 08:01:09,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:01:09,926 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-19 08:01:09,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [932308294] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:01:09,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 08:01:09,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 9, 9, 9, 9] total 20 [2022-11-19 08:01:09,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302874125] [2022-11-19 08:01:09,927 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 08:01:09,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-19 08:01:09,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:01:09,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-19 08:01:09,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2022-11-19 08:01:09,930 INFO L87 Difference]: Start difference. First operand 517 states and 801 transitions. Second operand has 20 states, 20 states have (on average 10.75) internal successors, (215), 18 states have internal predecessors, (215), 4 states have call successors, (48), 6 states have call predecessors, (48), 9 states have return successors, (44), 6 states have call predecessors, (44), 4 states have call successors, (44) [2022-11-19 08:01:22,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:22,428 INFO L93 Difference]: Finished difference Result 3066 states and 5040 transitions. [2022-11-19 08:01:22,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-19 08:01:22,430 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 10.75) internal successors, (215), 18 states have internal predecessors, (215), 4 states have call successors, (48), 6 states have call predecessors, (48), 9 states have return successors, (44), 6 states have call predecessors, (44), 4 states have call successors, (44) Word has length 157 [2022-11-19 08:01:22,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:22,452 INFO L225 Difference]: With dead ends: 3066 [2022-11-19 08:01:22,452 INFO L226 Difference]: Without dead ends: 2882 [2022-11-19 08:01:22,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 964 GetRequests, 924 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=243, Invalid=1479, Unknown=0, NotChecked=0, Total=1722 [2022-11-19 08:01:22,458 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 3314 mSDsluCounter, 3158 mSDsCounter, 0 mSdLazyCounter, 7450 mSolverCounterSat, 1029 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3390 SdHoareTripleChecker+Valid, 3544 SdHoareTripleChecker+Invalid, 8479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1029 IncrementalHoareTripleChecker+Valid, 7450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:22,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3390 Valid, 3544 Invalid, 8479 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1029 Valid, 7450 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2022-11-19 08:01:22,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2882 states. [2022-11-19 08:01:22,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2882 to 2043. [2022-11-19 08:01:22,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2043 states, 1605 states have (on average 1.5763239875389408) internal successors, (2530), 1616 states have internal predecessors, (2530), 380 states have call successors, (380), 49 states have call predecessors, (380), 57 states have return successors, (484), 381 states have call predecessors, (484), 378 states have call successors, (484) [2022-11-19 08:01:22,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2043 states to 2043 states and 3394 transitions. [2022-11-19 08:01:22,919 INFO L78 Accepts]: Start accepts. Automaton has 2043 states and 3394 transitions. Word has length 157 [2022-11-19 08:01:22,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:22,920 INFO L495 AbstractCegarLoop]: Abstraction has 2043 states and 3394 transitions. [2022-11-19 08:01:22,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 10.75) internal successors, (215), 18 states have internal predecessors, (215), 4 states have call successors, (48), 6 states have call predecessors, (48), 9 states have return successors, (44), 6 states have call predecessors, (44), 4 states have call successors, (44) [2022-11-19 08:01:22,920 INFO L276 IsEmpty]: Start isEmpty. Operand 2043 states and 3394 transitions. [2022-11-19 08:01:22,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-19 08:01:22,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:22,952 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:22,978 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 (14)] Forceful destruction successful, exit code 0 [2022-11-19 08:01:23,178 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2022-11-19 08:01:23,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-19 08:01:23,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:01:23,570 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:01:23,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:23,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1872856780, now seen corresponding path program 1 times [2022-11-19 08:01:23,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:01:23,571 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [750366445] [2022-11-19 08:01:23,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:23,571 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 08:01:23,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:01:23,572 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:23,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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)] Waiting until timeout for monitored process [2022-11-19 08:01:23,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:23,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 646 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:01:23,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:01:23,921 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-19 08:01:23,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:01:23,922 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:01:23,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [750366445] [2022-11-19 08:01:23,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [750366445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:23,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:01:23,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:01:23,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771375652] [2022-11-19 08:01:23,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:23,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:01:23,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:01:23,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:01:23,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:01:23,925 INFO L87 Difference]: Start difference. First operand 2043 states and 3394 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:01:24,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:24,540 INFO L93 Difference]: Finished difference Result 4819 states and 8079 transitions. [2022-11-19 08:01:24,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:01:24,541 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 161 [2022-11-19 08:01:24,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:24,568 INFO L225 Difference]: With dead ends: 4819 [2022-11-19 08:01:24,568 INFO L226 Difference]: Without dead ends: 3035 [2022-11-19 08:01:24,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 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 08:01:24,577 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 99 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 994 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:24,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 994 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:01:24,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3035 states. [2022-11-19 08:01:25,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3035 to 3019. [2022-11-19 08:01:25,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3019 states, 2391 states have (on average 1.5826014219991635) internal successors, (3784), 2402 states have internal predecessors, (3784), 570 states have call successors, (570), 49 states have call predecessors, (570), 57 states have return successors, (706), 571 states have call predecessors, (706), 568 states have call successors, (706) [2022-11-19 08:01:25,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3019 states to 3019 states and 5060 transitions. [2022-11-19 08:01:25,349 INFO L78 Accepts]: Start accepts. Automaton has 3019 states and 5060 transitions. Word has length 161 [2022-11-19 08:01:25,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:25,350 INFO L495 AbstractCegarLoop]: Abstraction has 3019 states and 5060 transitions. [2022-11-19 08:01:25,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:01:25,350 INFO L276 IsEmpty]: Start isEmpty. Operand 3019 states and 5060 transitions. [2022-11-19 08:01:25,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-19 08:01:25,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:25,372 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:25,396 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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)] Ended with exit code 0 [2022-11-19 08:01:25,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:25,590 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:01:25,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:25,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1285238472, now seen corresponding path program 1 times [2022-11-19 08:01:25,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:01:25,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1745619185] [2022-11-19 08:01:25,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:25,592 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 08:01:25,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:01:25,593 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:25,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 (18)] Waiting until timeout for monitored process [2022-11-19 08:01:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:26,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:01:26,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:01:26,047 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-19 08:01:26,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:01:26,047 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:01:26,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1745619185] [2022-11-19 08:01:26,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1745619185] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:26,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:01:26,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:01:26,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126182297] [2022-11-19 08:01:26,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:26,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:01:26,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:01:26,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:01:26,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:01:26,051 INFO L87 Difference]: Start difference. First operand 3019 states and 5060 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:01:27,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:27,087 INFO L93 Difference]: Finished difference Result 7001 states and 11865 transitions. [2022-11-19 08:01:27,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:01:27,088 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 162 [2022-11-19 08:01:27,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:27,117 INFO L225 Difference]: With dead ends: 7001 [2022-11-19 08:01:27,117 INFO L226 Difference]: Without dead ends: 4507 [2022-11-19 08:01:27,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 160 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 08:01:27,129 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 97 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:27,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 987 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:01:27,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4507 states. [2022-11-19 08:01:28,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4507 to 4491. [2022-11-19 08:01:28,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4491 states, 3617 states have (on average 1.5875034559026817) internal successors, (5742), 3628 states have internal predecessors, (5742), 816 states have call successors, (816), 49 states have call predecessors, (816), 57 states have return successors, (1036), 817 states have call predecessors, (1036), 814 states have call successors, (1036) [2022-11-19 08:01:28,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4491 states to 4491 states and 7594 transitions. [2022-11-19 08:01:28,280 INFO L78 Accepts]: Start accepts. Automaton has 4491 states and 7594 transitions. Word has length 162 [2022-11-19 08:01:28,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:28,281 INFO L495 AbstractCegarLoop]: Abstraction has 4491 states and 7594 transitions. [2022-11-19 08:01:28,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:01:28,281 INFO L276 IsEmpty]: Start isEmpty. Operand 4491 states and 7594 transitions. [2022-11-19 08:01:28,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-19 08:01:28,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:28,320 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:28,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 (18)] Forceful destruction successful, exit code 0 [2022-11-19 08:01:28,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:28,537 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:01:28,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:28,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1746949747, now seen corresponding path program 1 times [2022-11-19 08:01:28,539 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:01:28,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [989807871] [2022-11-19 08:01:28,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:28,539 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 08:01:28,539 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:01:28,541 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:28,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:28,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:28,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 650 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:01:28,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:01:28,956 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-19 08:01:28,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:01:28,957 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:01:28,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [989807871] [2022-11-19 08:01:28,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [989807871] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:28,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:01:28,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:01:28,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386981955] [2022-11-19 08:01:28,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:28,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:01:28,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:01:28,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:01:28,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:01:28,964 INFO L87 Difference]: Start difference. First operand 4491 states and 7594 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:01:30,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:30,468 INFO L93 Difference]: Finished difference Result 10383 states and 17743 transitions. [2022-11-19 08:01:30,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:01:30,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 163 [2022-11-19 08:01:30,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:30,514 INFO L225 Difference]: With dead ends: 10383 [2022-11-19 08:01:30,514 INFO L226 Difference]: Without dead ends: 6849 [2022-11-19 08:01:30,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 161 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 08:01:30,530 INFO L413 NwaCegarLoop]: 504 mSDtfsCounter, 95 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:30,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 987 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:01:30,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6849 states. [2022-11-19 08:01:32,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6849 to 6833. [2022-11-19 08:01:32,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6833 states, 5601 states have (on average 1.590430280307088) internal successors, (8908), 5612 states have internal predecessors, (8908), 1174 states have call successors, (1174), 49 states have call predecessors, (1174), 57 states have return successors, (1534), 1175 states have call predecessors, (1534), 1172 states have call successors, (1534) [2022-11-19 08:01:32,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6833 states to 6833 states and 11616 transitions. [2022-11-19 08:01:32,618 INFO L78 Accepts]: Start accepts. Automaton has 6833 states and 11616 transitions. Word has length 163 [2022-11-19 08:01:32,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:32,618 INFO L495 AbstractCegarLoop]: Abstraction has 6833 states and 11616 transitions. [2022-11-19 08:01:32,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:01:32,619 INFO L276 IsEmpty]: Start isEmpty. Operand 6833 states and 11616 transitions. [2022-11-19 08:01:32,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-19 08:01:32,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:32,660 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:32,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:32,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:32,877 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:01:32,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:32,878 INFO L85 PathProgramCache]: Analyzing trace with hash 1179389580, now seen corresponding path program 1 times [2022-11-19 08:01:32,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:01:32,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885014035] [2022-11-19 08:01:32,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:32,879 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 08:01:32,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:01:32,881 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:32,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:33,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:01:33,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:01:33,276 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-19 08:01:33,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:01:33,277 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:01:33,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885014035] [2022-11-19 08:01:33,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885014035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:33,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:01:33,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:01:33,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373884235] [2022-11-19 08:01:33,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:33,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:01:33,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:01:33,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:01:33,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:01:33,279 INFO L87 Difference]: Start difference. First operand 6833 states and 11616 transitions. Second operand has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:01:34,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:34,753 INFO L93 Difference]: Finished difference Result 16467 states and 28233 transitions. [2022-11-19 08:01:34,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:01:34,753 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 164 [2022-11-19 08:01:34,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:34,821 INFO L225 Difference]: With dead ends: 16467 [2022-11-19 08:01:34,821 INFO L226 Difference]: Without dead ends: 11087 [2022-11-19 08:01:34,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 162 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 08:01:34,844 INFO L413 NwaCegarLoop]: 514 mSDtfsCounter, 93 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:34,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1004 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:01:34,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11087 states. [2022-11-19 08:01:37,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11087 to 11071. [2022-11-19 08:01:37,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11071 states, 9087 states have (on average 1.5833608451634202) internal successors, (14388), 9098 states have internal predecessors, (14388), 1926 states have call successors, (1926), 49 states have call predecessors, (1926), 57 states have return successors, (2530), 1927 states have call predecessors, (2530), 1924 states have call successors, (2530) [2022-11-19 08:01:37,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11071 states to 11071 states and 18844 transitions. [2022-11-19 08:01:37,370 INFO L78 Accepts]: Start accepts. Automaton has 11071 states and 18844 transitions. Word has length 164 [2022-11-19 08:01:37,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:37,370 INFO L495 AbstractCegarLoop]: Abstraction has 11071 states and 18844 transitions. [2022-11-19 08:01:37,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.666666666666664) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:01:37,371 INFO L276 IsEmpty]: Start isEmpty. Operand 11071 states and 18844 transitions. [2022-11-19 08:01:37,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-19 08:01:37,422 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:37,423 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:37,447 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:37,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:37,640 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:01:37,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:37,641 INFO L85 PathProgramCache]: Analyzing trace with hash -269315409, now seen corresponding path program 1 times [2022-11-19 08:01:37,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:01:37,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [774140514] [2022-11-19 08:01:37,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:37,641 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 08:01:37,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:01:37,643 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:37,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 (21)] Waiting until timeout for monitored process [2022-11-19 08:01:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:38,034 INFO L263 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:01:38,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:01:38,101 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-19 08:01:38,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:01:38,102 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:01:38,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [774140514] [2022-11-19 08:01:38,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [774140514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:38,103 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:01:38,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:01:38,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035534614] [2022-11-19 08:01:38,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:38,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:01:38,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:01:38,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:01:38,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:01:38,118 INFO L87 Difference]: Start difference. First operand 11071 states and 18844 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:01:41,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:41,088 INFO L93 Difference]: Finished difference Result 27199 states and 46533 transitions. [2022-11-19 08:01:41,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:01:41,090 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 165 [2022-11-19 08:01:41,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:41,183 INFO L225 Difference]: With dead ends: 27199 [2022-11-19 08:01:41,183 INFO L226 Difference]: Without dead ends: 18375 [2022-11-19 08:01:41,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 163 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 08:01:41,219 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 91 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:41,220 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 993 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:01:41,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18375 states. [2022-11-19 08:01:45,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18375 to 18359. [2022-11-19 08:01:45,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18359 states, 15163 states have (on average 1.5806898371034757) internal successors, (23968), 15174 states have internal predecessors, (23968), 3138 states have call successors, (3138), 49 states have call predecessors, (3138), 57 states have return successors, (4042), 3139 states have call predecessors, (4042), 3136 states have call successors, (4042) [2022-11-19 08:01:45,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18359 states to 18359 states and 31148 transitions. [2022-11-19 08:01:45,170 INFO L78 Accepts]: Start accepts. Automaton has 18359 states and 31148 transitions. Word has length 165 [2022-11-19 08:01:45,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:45,170 INFO L495 AbstractCegarLoop]: Abstraction has 18359 states and 31148 transitions. [2022-11-19 08:01:45,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:01:45,171 INFO L276 IsEmpty]: Start isEmpty. Operand 18359 states and 31148 transitions. [2022-11-19 08:01:45,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-11-19 08:01:45,364 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:45,365 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:45,390 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 (21)] Forceful destruction successful, exit code 0 [2022-11-19 08:01:45,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:45,582 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:01:45,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:45,583 INFO L85 PathProgramCache]: Analyzing trace with hash 96545482, now seen corresponding path program 1 times [2022-11-19 08:01:45,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:01:45,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [178041361] [2022-11-19 08:01:45,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:45,584 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 08:01:45,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:01:45,585 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:45,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 (22)] Waiting until timeout for monitored process [2022-11-19 08:01:45,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:45,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 656 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:01:45,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:01:46,025 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-19 08:01:46,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:01:46,026 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:01:46,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [178041361] [2022-11-19 08:01:46,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [178041361] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:46,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:01:46,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:01:46,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501711228] [2022-11-19 08:01:46,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:46,028 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:01:46,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:01:46,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:01:46,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:01:46,029 INFO L87 Difference]: Start difference. First operand 18359 states and 31148 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:01:51,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:01:51,382 INFO L93 Difference]: Finished difference Result 47357 states and 80785 transitions. [2022-11-19 08:01:51,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:01:51,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 166 [2022-11-19 08:01:51,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:01:51,546 INFO L225 Difference]: With dead ends: 47357 [2022-11-19 08:01:51,547 INFO L226 Difference]: Without dead ends: 32137 [2022-11-19 08:01:51,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 164 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 08:01:51,596 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 89 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:01:51,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 1001 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:01:51,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32137 states. [2022-11-19 08:01:57,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32137 to 32121. [2022-11-19 08:01:57,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32121 states, 26519 states have (on average 1.5715524718126626) internal successors, (41676), 26530 states have internal predecessors, (41676), 5544 states have call successors, (5544), 49 states have call predecessors, (5544), 57 states have return successors, (7154), 5545 states have call predecessors, (7154), 5542 states have call successors, (7154) [2022-11-19 08:01:57,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32121 states to 32121 states and 54374 transitions. [2022-11-19 08:01:57,798 INFO L78 Accepts]: Start accepts. Automaton has 32121 states and 54374 transitions. Word has length 166 [2022-11-19 08:01:57,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:01:57,799 INFO L495 AbstractCegarLoop]: Abstraction has 32121 states and 54374 transitions. [2022-11-19 08:01:57,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 08:01:57,799 INFO L276 IsEmpty]: Start isEmpty. Operand 32121 states and 54374 transitions. [2022-11-19 08:01:57,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-11-19 08:01:57,925 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:01:57,925 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:01:57,944 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 (22)] Forceful destruction successful, exit code 0 [2022-11-19 08:01:58,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:58,144 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:01:58,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:01:58,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1954940850, now seen corresponding path program 1 times [2022-11-19 08:01:58,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:01:58,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131439576] [2022-11-19 08:01:58,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:01:58,145 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 08:01:58,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:01:58,147 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:58,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a7838b60-e0c4-46ea-9d22-cb72ef228574/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 08:01:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:01:58,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:01:58,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:01:58,598 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-19 08:01:58,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:01:58,599 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:01:58,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131439576] [2022-11-19 08:01:58,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131439576] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:01:58,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:01:58,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:01:58,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181679717] [2022-11-19 08:01:58,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:01:58,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:01:58,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:01:58,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:01:58,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:01:58,606 INFO L87 Difference]: Start difference. First operand 32121 states and 54374 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17)