./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/num_conversion_1.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_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 bdb7543d1c240ce49edc036e26416805e34b577c5ba56fd044d3b26828ca42a8 --- 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 08:21:04,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:21:04,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:21:04,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:21:04,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:21:04,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:21:04,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:21:04,365 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:21:04,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:21:04,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:21:04,384 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:21:04,385 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:21:04,386 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:21:04,387 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:21:04,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:21:04,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:21:04,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:21:04,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:21:04,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:21:04,408 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:21:04,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:21:04,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:21:04,423 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:21:04,424 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:21:04,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:21:04,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:21:04,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:21:04,438 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:21:04,439 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:21:04,440 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:21:04,441 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:21:04,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:21:04,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:21:04,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:21:04,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:21:04,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:21:04,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:21:04,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:21:04,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:21:04,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:21:04,454 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:21:04,455 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 08:21:04,511 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:21:04,511 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:21:04,512 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:21:04,513 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:21:04,514 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:21:04,514 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:21:04,514 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:21:04,515 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:21:04,515 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:21:04,515 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:21:04,516 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:21:04,517 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:21:04,517 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:21:04,517 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:21:04,518 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:21:04,518 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:21:04,518 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:21:04,519 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:21:04,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:21:04,520 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:21:04,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:21:04,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:21:04,521 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:21:04,521 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:21:04,521 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:21:04,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:21:04,522 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:21:04,522 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:21:04,522 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:21:04,522 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:21:04,523 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:21:04,523 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:21:04,523 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:21:04,524 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:21:04,524 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:21:04,524 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:21:04,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:21:04,525 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:21:04,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:21:04,525 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:21:04,526 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:21:04,526 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_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdb7543d1c240ce49edc036e26416805e34b577c5ba56fd044d3b26828ca42a8 [2022-11-19 08:21:04,936 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:21:04,975 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:21:04,979 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:21:04,980 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:21:04,981 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:21:04,983 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/bitvector/num_conversion_1.c [2022-11-19 08:21:05,069 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/data/32e1a4f12/c26c32cb7e7f427998de7e3aa72d874f/FLAG5c20a623c [2022-11-19 08:21:05,596 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:21:05,596 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/sv-benchmarks/c/bitvector/num_conversion_1.c [2022-11-19 08:21:05,603 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/data/32e1a4f12/c26c32cb7e7f427998de7e3aa72d874f/FLAG5c20a623c [2022-11-19 08:21:05,947 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/data/32e1a4f12/c26c32cb7e7f427998de7e3aa72d874f [2022-11-19 08:21:05,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:21:05,955 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:21:05,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:21:05,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:21:05,964 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:21:05,965 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:21:05" (1/1) ... [2022-11-19 08:21:05,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24b27c8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:05, skipping insertion in model container [2022-11-19 08:21:05,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:21:05" (1/1) ... [2022-11-19 08:21:05,978 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:21:06,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:21:06,282 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_f62f0fbc-09c3-4ff7-abf3-1993edf90197/sv-benchmarks/c/bitvector/num_conversion_1.c[673,686] [2022-11-19 08:21:06,306 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:21:06,318 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:21:06,333 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_f62f0fbc-09c3-4ff7-abf3-1993edf90197/sv-benchmarks/c/bitvector/num_conversion_1.c[673,686] [2022-11-19 08:21:06,342 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:21:06,359 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:21:06,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:06 WrapperNode [2022-11-19 08:21:06,360 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:21:06,361 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:21:06,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:21:06,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:21:06,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:06" (1/1) ... [2022-11-19 08:21:06,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:06" (1/1) ... [2022-11-19 08:21:06,403 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2022-11-19 08:21:06,404 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:21:06,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:21:06,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:21:06,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:21:06,417 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:06" (1/1) ... [2022-11-19 08:21:06,417 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:06" (1/1) ... [2022-11-19 08:21:06,435 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:06" (1/1) ... [2022-11-19 08:21:06,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:06" (1/1) ... [2022-11-19 08:21:06,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:06" (1/1) ... [2022-11-19 08:21:06,444 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:06" (1/1) ... [2022-11-19 08:21:06,445 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:06" (1/1) ... [2022-11-19 08:21:06,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:06" (1/1) ... [2022-11-19 08:21:06,449 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:21:06,450 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:21:06,450 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:21:06,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:21:06,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:06" (1/1) ... [2022-11-19 08:21:06,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:21:06,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:21:06,489 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:21:06,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:21:06,542 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:21:06,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:21:06,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:21:06,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:21:06,615 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:21:06,618 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:21:06,753 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:21:06,804 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:21:06,805 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:21:06,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:21:06 BoogieIcfgContainer [2022-11-19 08:21:06,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:21:06,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:21:06,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:21:06,816 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:21:06,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:21:05" (1/3) ... [2022-11-19 08:21:06,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79942be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:21:06, skipping insertion in model container [2022-11-19 08:21:06,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:06" (2/3) ... [2022-11-19 08:21:06,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79942be4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:21:06, skipping insertion in model container [2022-11-19 08:21:06,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:21:06" (3/3) ... [2022-11-19 08:21:06,820 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2022-11-19 08:21:06,844 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:21:06,845 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:21:06,898 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:21:06,906 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;@3a91ec78, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:21:06,906 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:21:06,911 INFO L276 IsEmpty]: Start isEmpty. Operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:06,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-19 08:21:06,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:21:06,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-19 08:21:06,920 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:21:06,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:21:06,926 INFO L85 PathProgramCache]: Analyzing trace with hash 2098665, now seen corresponding path program 1 times [2022-11-19 08:21:06,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:21:06,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831908241] [2022-11-19 08:21:06,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:06,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:21:07,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:21:07,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:07,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:21:07,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831908241] [2022-11-19 08:21:07,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831908241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:21:07,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:21:07,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:21:07,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298086812] [2022-11-19 08:21:07,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:21:07,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:21:07,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:21:07,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:21:07,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:21:07,352 INFO L87 Difference]: Start difference. First operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:07,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:21:07,426 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2022-11-19 08:21:07,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:21:07,429 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-19 08:21:07,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:21:07,438 INFO L225 Difference]: With dead ends: 13 [2022-11-19 08:21:07,439 INFO L226 Difference]: Without dead ends: 6 [2022-11-19 08:21:07,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 08:21:07,447 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:21:07,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 6 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:21:07,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2022-11-19 08:21:07,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2022-11-19 08:21:07,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:07,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2022-11-19 08:21:07,524 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2022-11-19 08:21:07,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:21:07,525 INFO L495 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2022-11-19 08:21:07,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:07,526 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2022-11-19 08:21:07,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 08:21:07,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:21:07,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 08:21:07,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:21:07,528 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:21:07,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:21:07,529 INFO L85 PathProgramCache]: Analyzing trace with hash 65017257, now seen corresponding path program 1 times [2022-11-19 08:21:07,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:21:07,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069537315] [2022-11-19 08:21:07,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:07,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:21:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:21:07,755 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:07,755 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:21:07,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069537315] [2022-11-19 08:21:07,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069537315] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:21:07,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1018773148] [2022-11-19 08:21:07,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:07,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:21:07,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:21:07,763 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:21:07,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:21:07,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:21:07,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 08:21:07,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:07,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:07,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:21:07,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:07,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1018773148] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:21:07,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1848869136] [2022-11-19 08:21:07,944 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-19 08:21:07,945 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:21:07,949 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:21:07,957 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:21:07,958 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:21:08,449 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:21:08,576 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '69#(and (not (< (mod |ULTIMATE.start_main_~c~0#1| 256) 8)) (= (ite (= (mod |ULTIMATE.start_main_~y~0#1| 256) (mod |ULTIMATE.start_main_~x~0#1| 256)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 37) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 08:21:08,576 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:21:08,576 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:21:08,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2022-11-19 08:21:08,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802284534] [2022-11-19 08:21:08,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:21:08,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 08:21:08,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:21:08,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 08:21:08,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-19 08:21:08,580 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:08,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:21:08,685 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2022-11-19 08:21:08,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:21:08,686 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-19 08:21:08,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:21:08,687 INFO L225 Difference]: With dead ends: 12 [2022-11-19 08:21:08,687 INFO L226 Difference]: Without dead ends: 9 [2022-11-19 08:21:08,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-19 08:21:08,689 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 2 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:21:08,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 8 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:21:08,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-19 08:21:08,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-19 08:21:08,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:08,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2022-11-19 08:21:08,695 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2022-11-19 08:21:08,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:21:08,695 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2022-11-19 08:21:08,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:08,696 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2022-11-19 08:21:08,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-19 08:21:08,697 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:21:08,697 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2022-11-19 08:21:08,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:21:08,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:21:08,904 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:21:08,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:21:08,905 INFO L85 PathProgramCache]: Analyzing trace with hash -142215703, now seen corresponding path program 2 times [2022-11-19 08:21:08,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:21:08,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33232740] [2022-11-19 08:21:08,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:08,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:21:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:21:09,176 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:09,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:21:09,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33232740] [2022-11-19 08:21:09,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33232740] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:21:09,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774602265] [2022-11-19 08:21:09,177 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:21:09,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:21:09,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:21:09,179 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:21:09,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:21:09,313 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-19 08:21:09,313 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:21:09,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 08:21:09,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:09,368 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:09,369 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:21:09,518 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:09,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774602265] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:21:09,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2079969708] [2022-11-19 08:21:09,520 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2022-11-19 08:21:09,521 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:21:09,521 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 08:21:09,521 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 08:21:09,521 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 08:21:09,690 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 08:21:09,826 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '163#(and (not (< (mod |ULTIMATE.start_main_~c~0#1| 256) 8)) (= (ite (= (mod |ULTIMATE.start_main_~y~0#1| 256) (mod |ULTIMATE.start_main_~x~0#1| 256)) 1 0) |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| 0) (<= 0 |ULTIMATE.start_main_~c~0#1|) (= |ULTIMATE.start___VERIFIER_assert_~cond#1| |ULTIMATE.start___VERIFIER_assert_#in~cond#1|) (= |#NULL.offset| 0) (= |ULTIMATE.start_main_~x~0#1| 37) (<= 0 |#StackHeapBarrier|) (= |#NULL.base| 0))' at error location [2022-11-19 08:21:09,841 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-11-19 08:21:09,841 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:21:09,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 15 [2022-11-19 08:21:09,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918680903] [2022-11-19 08:21:09,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:21:09,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-19 08:21:09,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:21:09,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-19 08:21:09,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=242, Unknown=0, NotChecked=0, Total=342 [2022-11-19 08:21:09,844 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:10,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:21:10,285 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2022-11-19 08:21:10,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 08:21:10,288 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-19 08:21:10,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:21:10,288 INFO L225 Difference]: With dead ends: 18 [2022-11-19 08:21:10,289 INFO L226 Difference]: Without dead ends: 15 [2022-11-19 08:21:10,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=156, Invalid=350, Unknown=0, NotChecked=0, Total=506 [2022-11-19 08:21:10,290 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 9 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:21:10,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 8 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:21:10,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-11-19 08:21:10,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-11-19 08:21:10,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:10,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-11-19 08:21:10,309 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 8 [2022-11-19 08:21:10,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:21:10,312 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-11-19 08:21:10,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 1.1875) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:10,312 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-11-19 08:21:10,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-19 08:21:10,314 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:21:10,314 INFO L195 NwaCegarLoop]: trace histogram [8, 1, 1, 1, 1] [2022-11-19 08:21:10,323 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:21:10,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:21:10,526 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:21:10,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:21:10,527 INFO L85 PathProgramCache]: Analyzing trace with hash -361503255, now seen corresponding path program 3 times [2022-11-19 08:21:10,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:21:10,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678463700] [2022-11-19 08:21:10,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:10,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:21:10,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:21:10,673 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-19 08:21:10,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-19 08:21:10,821 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-19 08:21:10,821 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-19 08:21:10,823 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 08:21:10,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:21:10,832 INFO L444 BasicCegarLoop]: Path program histogram: [3, 1] [2022-11-19 08:21:10,835 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 08:21:10,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:21:10 BoogieIcfgContainer [2022-11-19 08:21:10,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 08:21:10,864 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 08:21:10,865 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 08:21:10,865 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 08:21:10,865 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:21:06" (3/4) ... [2022-11-19 08:21:10,869 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-19 08:21:10,869 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 08:21:10,870 INFO L158 Benchmark]: Toolchain (without parser) took 4914.67ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 94.4MB in the beginning and 82.2MB in the end (delta: 12.2MB). Peak memory consumption was 36.7MB. Max. memory is 16.1GB. [2022-11-19 08:21:10,870 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 117.4MB. Free memory is still 70.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:21:10,874 INFO L158 Benchmark]: CACSL2BoogieTranslator took 401.07ms. Allocated memory is still 117.4MB. Free memory was 94.1MB in the beginning and 93.9MB in the end (delta: 172.4kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-19 08:21:10,875 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.88ms. Allocated memory is still 117.4MB. Free memory was 93.9MB in the beginning and 92.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:21:10,875 INFO L158 Benchmark]: Boogie Preprocessor took 43.59ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 91.6MB in the end (delta: 955.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:21:10,875 INFO L158 Benchmark]: RCFGBuilder took 358.94ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 80.3MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-19 08:21:10,876 INFO L158 Benchmark]: TraceAbstraction took 4052.94ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 79.6MB in the beginning and 82.2MB in the end (delta: -2.6MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. [2022-11-19 08:21:10,879 INFO L158 Benchmark]: Witness Printer took 4.76ms. Allocated memory is still 142.6MB. Free memory is still 82.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:21:10,881 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 117.4MB. Free memory is still 70.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 401.07ms. Allocated memory is still 117.4MB. Free memory was 94.1MB in the beginning and 93.9MB in the end (delta: 172.4kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 42.88ms. Allocated memory is still 117.4MB. Free memory was 93.9MB in the beginning and 92.6MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.59ms. Allocated memory is still 117.4MB. Free memory was 92.6MB in the beginning and 91.6MB in the end (delta: 955.8kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 358.94ms. Allocated memory is still 117.4MB. Free memory was 91.6MB in the beginning and 80.3MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4052.94ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 79.6MB in the beginning and 82.2MB in the end (delta: -2.6MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. * Witness Printer took 4.76ms. Allocated memory is still 142.6MB. Free memory is still 82.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 16]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftLeft at line 32, overapproximation of bitwiseAnd at line 33. Possible FailurePath: [L24] unsigned char x; [L25] unsigned char y; [L26] unsigned char c; [L28] x = 37 [L29] y = 0 [L30] c = 0 VAL [c=0, x=37, y=0] [L31] COND TRUE c < (unsigned char)8 [L32] unsigned char i = ((unsigned char)1) << c; [L33] unsigned char bit = x & i; [L34] COND FALSE !(bit != (unsigned char)0) [L37] c = c + ((unsigned char)1) VAL [bit=0, c=1, i=1, x=37, y=0] [L31] COND TRUE c < (unsigned char)8 [L32] unsigned char i = ((unsigned char)1) << c; [L33] unsigned char bit = x & i; [L34] COND FALSE !(bit != (unsigned char)0) [L37] c = c + ((unsigned char)1) VAL [bit=0, c=2, i=1, x=37, y=0] [L31] COND TRUE c < (unsigned char)8 [L32] unsigned char i = ((unsigned char)1) << c; [L33] unsigned char bit = x & i; [L34] COND TRUE bit != (unsigned char)0 [L35] y = y + i [L37] c = c + ((unsigned char)1) VAL [bit=255, c=3, i=1, x=37, y=1] [L31] COND TRUE c < (unsigned char)8 [L32] unsigned char i = ((unsigned char)1) << c; [L33] unsigned char bit = x & i; [L34] COND TRUE bit != (unsigned char)0 [L35] y = y + i [L37] c = c + ((unsigned char)1) VAL [bit=255, c=4, i=254, x=37, y=255] [L31] COND TRUE c < (unsigned char)8 [L32] unsigned char i = ((unsigned char)1) << c; [L33] unsigned char bit = x & i; [L34] COND TRUE bit != (unsigned char)0 [L35] y = y + i [L37] c = c + ((unsigned char)1) VAL [bit=255, c=5, i=2, x=37, y=1] [L31] COND TRUE c < (unsigned char)8 [L32] unsigned char i = ((unsigned char)1) << c; [L33] unsigned char bit = x & i; [L34] COND TRUE bit != (unsigned char)0 [L35] y = y + i [L37] c = c + ((unsigned char)1) VAL [bit=37, c=6, i=255, x=37, y=0] [L31] COND TRUE c < (unsigned char)8 [L32] unsigned char i = ((unsigned char)1) << c; [L33] unsigned char bit = x & i; [L34] COND TRUE bit != (unsigned char)0 [L35] y = y + i [L37] c = c + ((unsigned char)1) VAL [bit=255, c=7, i=255, x=37, y=255] [L31] COND TRUE c < (unsigned char)8 [L32] unsigned char i = ((unsigned char)1) << c; [L33] unsigned char bit = x & i; [L34] COND FALSE !(bit != (unsigned char)0) [L37] c = c + ((unsigned char)1) VAL [bit=0, c=8, i=0, x=37, y=255] [L31] COND FALSE !(c < (unsigned char)8) [L39] CALL __VERIFIER_assert(x == y) [L15] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L16] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 4, TraceHistogramMax: 8, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 11 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 11 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 57 IncrementalHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 7 mSDtfsCounter, 57 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 51 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=3, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 187 SizeOfPredicates, 2 NumberOfNonLiveVariables, 108 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 7 InterpolantComputations, 1 PerfectInterpolantSequences, 0/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-19 08:21:10,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/num_conversion_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 bdb7543d1c240ce49edc036e26416805e34b577c5ba56fd044d3b26828ca42a8 --- 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 08:21:13,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:21:13,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:21:13,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:21:13,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:21:13,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:21:13,427 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:21:13,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:21:13,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:21:13,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:21:13,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:21:13,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:21:13,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:21:13,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:21:13,448 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:21:13,449 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:21:13,450 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:21:13,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:21:13,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:21:13,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:21:13,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:21:13,479 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:21:13,481 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:21:13,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:21:13,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:21:13,494 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:21:13,494 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:21:13,495 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:21:13,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:21:13,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:21:13,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:21:13,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:21:13,502 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:21:13,503 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:21:13,504 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:21:13,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:21:13,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:21:13,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:21:13,507 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:21:13,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:21:13,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:21:13,511 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-19 08:21:13,550 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:21:13,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:21:13,554 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:21:13,554 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:21:13,556 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:21:13,556 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:21:13,556 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:21:13,557 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:21:13,557 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:21:13,557 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:21:13,558 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:21:13,559 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:21:13,560 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:21:13,561 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:21:13,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:21:13,561 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:21:13,561 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:21:13,562 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:21:13,562 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:21:13,562 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-19 08:21:13,562 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-19 08:21:13,563 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-19 08:21:13,563 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:21:13,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:21:13,563 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:21:13,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:21:13,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:21:13,564 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-19 08:21:13,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:21:13,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:21:13,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:21:13,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:21:13,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:21:13,566 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-19 08:21:13,566 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-19 08:21:13,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:21:13,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:21:13,568 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-19 08:21:13,568 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_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bdb7543d1c240ce49edc036e26416805e34b577c5ba56fd044d3b26828ca42a8 [2022-11-19 08:21:13,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:21:13,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:21:13,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:21:13,960 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:21:13,961 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:21:13,963 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/bitvector/num_conversion_1.c [2022-11-19 08:21:14,040 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/data/a16dcdcd6/c26c50d9a1b94925a5e83e02f14b469d/FLAGb4f6bb674 [2022-11-19 08:21:14,613 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:21:14,614 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/sv-benchmarks/c/bitvector/num_conversion_1.c [2022-11-19 08:21:14,620 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/data/a16dcdcd6/c26c50d9a1b94925a5e83e02f14b469d/FLAGb4f6bb674 [2022-11-19 08:21:14,966 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/data/a16dcdcd6/c26c50d9a1b94925a5e83e02f14b469d [2022-11-19 08:21:14,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:21:14,972 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:21:14,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:21:14,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:21:14,982 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:21:14,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:21:14" (1/1) ... [2022-11-19 08:21:14,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@774af534 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:14, skipping insertion in model container [2022-11-19 08:21:14,989 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:21:14" (1/1) ... [2022-11-19 08:21:14,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:21:15,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:21:15,178 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_f62f0fbc-09c3-4ff7-abf3-1993edf90197/sv-benchmarks/c/bitvector/num_conversion_1.c[673,686] [2022-11-19 08:21:15,194 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:21:15,213 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:21:15,254 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_f62f0fbc-09c3-4ff7-abf3-1993edf90197/sv-benchmarks/c/bitvector/num_conversion_1.c[673,686] [2022-11-19 08:21:15,277 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:21:15,296 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:21:15,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15 WrapperNode [2022-11-19 08:21:15,297 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:21:15,298 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:21:15,298 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:21:15,298 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:21:15,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15" (1/1) ... [2022-11-19 08:21:15,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15" (1/1) ... [2022-11-19 08:21:15,334 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2022-11-19 08:21:15,335 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:21:15,336 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:21:15,336 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:21:15,336 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:21:15,346 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15" (1/1) ... [2022-11-19 08:21:15,347 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15" (1/1) ... [2022-11-19 08:21:15,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15" (1/1) ... [2022-11-19 08:21:15,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15" (1/1) ... [2022-11-19 08:21:15,354 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15" (1/1) ... [2022-11-19 08:21:15,359 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15" (1/1) ... [2022-11-19 08:21:15,360 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15" (1/1) ... [2022-11-19 08:21:15,361 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15" (1/1) ... [2022-11-19 08:21:15,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:21:15,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:21:15,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:21:15,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:21:15,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15" (1/1) ... [2022-11-19 08:21:15,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:21:15,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:21:15,406 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:21:15,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:21:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:21:15,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:21:15,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:21:15,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-19 08:21:15,567 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:21:15,570 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:21:15,745 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:21:15,753 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:21:15,755 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 08:21:15,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:21:15 BoogieIcfgContainer [2022-11-19 08:21:15,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:21:15,763 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:21:15,763 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:21:15,767 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:21:15,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:21:14" (1/3) ... [2022-11-19 08:21:15,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f77755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:21:15, skipping insertion in model container [2022-11-19 08:21:15,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:21:15" (2/3) ... [2022-11-19 08:21:15,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f77755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:21:15, skipping insertion in model container [2022-11-19 08:21:15,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:21:15" (3/3) ... [2022-11-19 08:21:15,773 INFO L112 eAbstractionObserver]: Analyzing ICFG num_conversion_1.c [2022-11-19 08:21:15,796 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:21:15,797 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 08:21:15,892 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:21:15,905 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;@78fe44d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:21:15,906 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 08:21:15,910 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:15,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 08:21:15,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:21:15,920 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 08:21:15,920 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:21:15,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:21:15,931 INFO L85 PathProgramCache]: Analyzing trace with hash 889968487, now seen corresponding path program 1 times [2022-11-19 08:21:15,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:21:15,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1608181737] [2022-11-19 08:21:15,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:15,948 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 08:21:15,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:21:15,966 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:15,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:16,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:21:16,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-19 08:21:16,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:16,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:16,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:21:16,117 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:21:16,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1608181737] [2022-11-19 08:21:16,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1608181737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:21:16,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:21:16,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:21:16,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952668042] [2022-11-19 08:21:16,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:21:16,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 08:21:16,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:21:16,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 08:21:16,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 08:21:16,209 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.4545454545454546) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:16,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:21:16,228 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2022-11-19 08:21:16,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 08:21:16,231 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-19 08:21:16,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:21:16,242 INFO L225 Difference]: With dead ends: 21 [2022-11-19 08:21:16,243 INFO L226 Difference]: Without dead ends: 9 [2022-11-19 08:21:16,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 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 08:21:16,260 INFO L413 NwaCegarLoop]: 14 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, 14 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 08:21:16,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:21:16,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2022-11-19 08:21:16,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2022-11-19 08:21:16,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:16,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions. [2022-11-19 08:21:16,310 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6 [2022-11-19 08:21:16,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:21:16,311 INFO L495 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions. [2022-11-19 08:21:16,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:16,312 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions. [2022-11-19 08:21:16,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 08:21:16,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:21:16,314 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 08:21:16,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:21:16,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:16,527 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:21:16,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:21:16,528 INFO L85 PathProgramCache]: Analyzing trace with hash 889640786, now seen corresponding path program 1 times [2022-11-19 08:21:16,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:21:16,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1076407159] [2022-11-19 08:21:16,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:16,529 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 08:21:16,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:21:16,531 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:16,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:16,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:21:16,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 08:21:16,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:16,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:16,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:21:16,649 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:21:16,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1076407159] [2022-11-19 08:21:16,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1076407159] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:21:16,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:21:16,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:21:16,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038557288] [2022-11-19 08:21:16,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:21:16,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:21:16,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:21:16,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:21:16,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:21:16,660 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:16,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:21:16,700 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2022-11-19 08:21:16,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:21:16,701 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-19 08:21:16,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:21:16,702 INFO L225 Difference]: With dead ends: 16 [2022-11-19 08:21:16,702 INFO L226 Difference]: Without dead ends: 12 [2022-11-19 08:21:16,702 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 08:21:16,704 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 14 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 08:21:16,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 14 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:21:16,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-11-19 08:21:16,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10. [2022-11-19 08:21:16,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:16,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2022-11-19 08:21:16,712 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 6 [2022-11-19 08:21:16,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:21:16,713 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2022-11-19 08:21:16,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:16,714 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2022-11-19 08:21:16,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 08:21:16,715 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:21:16,715 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:21:16,731 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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)] Ended with exit code 0 [2022-11-19 08:21:16,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:16,926 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:21:16,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:21:16,927 INFO L85 PathProgramCache]: Analyzing trace with hash 641725625, now seen corresponding path program 1 times [2022-11-19 08:21:16,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:21:16,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [374360910] [2022-11-19 08:21:16,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:16,928 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 08:21:16,928 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:21:16,935 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:16,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:16,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:21:16,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 08:21:17,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:17,082 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:17,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 08:21:17,083 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:21:17,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [374360910] [2022-11-19 08:21:17,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [374360910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:21:17,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:21:17,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 08:21:17,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810234088] [2022-11-19 08:21:17,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:21:17,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:21:17,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:21:17,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:21:17,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:21:17,086 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:17,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:21:17,136 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2022-11-19 08:21:17,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 08:21:17,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-19 08:21:17,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:21:17,139 INFO L225 Difference]: With dead ends: 24 [2022-11-19 08:21:17,139 INFO L226 Difference]: Without dead ends: 17 [2022-11-19 08:21:17,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 08:21:17,143 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 8 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:21:17,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 19 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:21:17,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-19 08:21:17,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 11. [2022-11-19 08:21:17,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:17,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2022-11-19 08:21:17,149 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 9 [2022-11-19 08:21:17,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:21:17,149 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2022-11-19 08:21:17,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:17,150 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2022-11-19 08:21:17,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-19 08:21:17,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:21:17,150 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:21:17,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:17,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:17,361 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:21:17,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:21:17,362 INFO L85 PathProgramCache]: Analyzing trace with hash 584467323, now seen corresponding path program 1 times [2022-11-19 08:21:17,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:21:17,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [91683581] [2022-11-19 08:21:17,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:17,363 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 08:21:17,364 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:21:17,370 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:17,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:17,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:21:17,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:21:17,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:17,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:17,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:21:17,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:17,508 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:21:17,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [91683581] [2022-11-19 08:21:17,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [91683581] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:21:17,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [98201667] [2022-11-19 08:21:17,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:17,509 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:21:17,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:21:17,512 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:21:17,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2022-11-19 08:21:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:21:17,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 08:21:17,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:17,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:17,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:21:17,641 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:17,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [98201667] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:21:17,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000536524] [2022-11-19 08:21:17,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:17,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:21:17,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:21:17,654 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:21:17,667 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 08:21:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:21:17,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 08:21:17,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:17,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:17,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:21:17,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:17,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000536524] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:21:17,809 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 08:21:17,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 5] total 7 [2022-11-19 08:21:17,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828159872] [2022-11-19 08:21:17,810 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 08:21:17,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 08:21:17,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:21:17,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 08:21:17,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:21:17,812 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:17,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:21:17,865 INFO L93 Difference]: Finished difference Result 23 states and 28 transitions. [2022-11-19 08:21:17,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:21:17,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-19 08:21:17,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:21:17,867 INFO L225 Difference]: With dead ends: 23 [2022-11-19 08:21:17,867 INFO L226 Difference]: Without dead ends: 19 [2022-11-19 08:21:17,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-19 08:21:17,869 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 23 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:21:17,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 29 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:21:17,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-19 08:21:17,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-19 08:21:17,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 18 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:17,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2022-11-19 08:21:17,875 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 9 [2022-11-19 08:21:17,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:21:17,876 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2022-11-19 08:21:17,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:17,876 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2022-11-19 08:21:17,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 08:21:17,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:21:17,877 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:21:17,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 08:21:18,086 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2022-11-19 08:21:18,293 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:18,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:18,485 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:21:18,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:21:18,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1843204080, now seen corresponding path program 1 times [2022-11-19 08:21:18,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:21:18,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823643934] [2022-11-19 08:21:18,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:18,487 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 08:21:18,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:21:18,488 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:18,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:18,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:21:18,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 08:21:18,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:18,722 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:21:18,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:21:18,891 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:21:18,892 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:21:18,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823643934] [2022-11-19 08:21:18,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823643934] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:21:18,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1807520917] [2022-11-19 08:21:18,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:18,893 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:21:18,893 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:21:18,895 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:21:18,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2022-11-19 08:21:18,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:21:18,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 08:21:18,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:19,021 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:21:19,021 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:21:19,064 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:21:19,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1807520917] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:21:19,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166181419] [2022-11-19 08:21:19,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:21:19,065 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:21:19,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:21:19,067 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:21:19,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-19 08:21:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:21:19,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 08:21:19,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:19,192 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:21:19,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:21:19,396 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-19 08:21:19,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166181419] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:21:19,396 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 08:21:19,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 13 [2022-11-19 08:21:19,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662404200] [2022-11-19 08:21:19,398 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 08:21:19,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-19 08:21:19,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:21:19,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-19 08:21:19,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-11-19 08:21:19,403 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:19,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:21:19,880 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2022-11-19 08:21:19,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-19 08:21:19,881 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-19 08:21:19,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:21:19,882 INFO L225 Difference]: With dead ends: 56 [2022-11-19 08:21:19,882 INFO L226 Difference]: Without dead ends: 47 [2022-11-19 08:21:19,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2022-11-19 08:21:19,884 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 49 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:21:19,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 55 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:21:19,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2022-11-19 08:21:19,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 26. [2022-11-19 08:21:19,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.24) internal successors, (31), 25 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:19,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2022-11-19 08:21:19,902 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 18 [2022-11-19 08:21:19,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:21:19,903 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2022-11-19 08:21:19,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:19,903 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2022-11-19 08:21:19,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-19 08:21:19,905 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:21:19,906 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-19 08:21:19,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:20,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-19 08:21:20,322 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2022-11-19 08:21:20,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt [2022-11-19 08:21:20,521 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:21:20,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:21:20,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1771704846, now seen corresponding path program 2 times [2022-11-19 08:21:20,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:21:20,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1303138302] [2022-11-19 08:21:20,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 08:21:20,522 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 08:21:20,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:21:20,523 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:20,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:20,563 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 08:21:20,563 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:21:20,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 08:21:20,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:20,631 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:20,632 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:21:20,765 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:20,766 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:21:20,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1303138302] [2022-11-19 08:21:20,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1303138302] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:21:20,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1765751317] [2022-11-19 08:21:20,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 08:21:20,767 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:21:20,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:21:20,771 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:21:20,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2022-11-19 08:21:20,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 08:21:20,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:21:20,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-19 08:21:20,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:20,907 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:20,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:21:20,957 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:20,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1765751317] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:21:20,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191900544] [2022-11-19 08:21:20,963 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-19 08:21:20,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:21:20,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:21:20,965 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:21:20,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-19 08:21:21,026 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-19 08:21:21,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:21:21,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 08:21:21,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:21,066 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:21,067 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:21:21,257 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:21,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191900544] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:21:21,258 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 08:21:21,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7, 7, 8] total 16 [2022-11-19 08:21:21,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915506020] [2022-11-19 08:21:21,258 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 08:21:21,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-19 08:21:21,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:21:21,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-19 08:21:21,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=158, Unknown=0, NotChecked=0, Total=240 [2022-11-19 08:21:21,260 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:21,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:21:21,518 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2022-11-19 08:21:21,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-19 08:21:21,519 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-11-19 08:21:21,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:21:21,520 INFO L225 Difference]: With dead ends: 41 [2022-11-19 08:21:21,520 INFO L226 Difference]: Without dead ends: 37 [2022-11-19 08:21:21,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=138, Invalid=282, Unknown=0, NotChecked=0, Total=420 [2022-11-19 08:21:21,521 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 77 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:21:21,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 75 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:21:21,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-19 08:21:21,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-11-19 08:21:21,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 36 states have (on average 1.25) internal successors, (45), 36 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:21,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2022-11-19 08:21:21,530 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 18 [2022-11-19 08:21:21,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:21:21,531 INFO L495 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2022-11-19 08:21:21,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:21,531 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2022-11-19 08:21:21,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-19 08:21:21,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:21:21,532 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 5, 3, 1, 1, 1, 1, 1, 1] [2022-11-19 08:21:21,540 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2022-11-19 08:21:21,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-19 08:21:21,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:22,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:22,141 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:21:22,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:21:22,142 INFO L85 PathProgramCache]: Analyzing trace with hash -29656432, now seen corresponding path program 3 times [2022-11-19 08:21:22,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:21:22,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793347773] [2022-11-19 08:21:22,142 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:21:22,142 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 08:21:22,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:21:22,144 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:22,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:22,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-19 08:21:22,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:21:22,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-19 08:21:22,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:23,095 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 83 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-19 08:21:23,095 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:21:25,442 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-19 08:21:25,443 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:21:25,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793347773] [2022-11-19 08:21:25,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793347773] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:21:25,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [678122467] [2022-11-19 08:21:25,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:21:25,446 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:21:25,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:21:25,448 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:21:25,452 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-19 08:21:25,570 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-19 08:21:25,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:21:25,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-19 08:21:25,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:25,938 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 83 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-19 08:21:25,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:21:26,497 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 85 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-19 08:21:26,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [678122467] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:21:26,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764739895] [2022-11-19 08:21:26,498 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:21:26,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:21:26,498 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:21:26,499 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:21:26,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-19 08:21:26,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s) [2022-11-19 08:21:26,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:21:26,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-19 08:21:26,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:27,506 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:27,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:21:30,002 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:30,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764739895] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:21:30,003 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 08:21:30,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17, 17, 19, 20] total 54 [2022-11-19 08:21:30,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565674537] [2022-11-19 08:21:30,004 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 08:21:30,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2022-11-19 08:21:30,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:21:30,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2022-11-19 08:21:30,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=446, Invalid=2416, Unknown=0, NotChecked=0, Total=2862 [2022-11-19 08:21:30,007 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand has 54 states, 54 states have (on average 1.6296296296296295) internal successors, (88), 54 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:47,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:21:47,990 INFO L93 Difference]: Finished difference Result 160 states and 206 transitions. [2022-11-19 08:21:47,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-11-19 08:21:47,991 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 54 states have (on average 1.6296296296296295) internal successors, (88), 54 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-19 08:21:47,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:21:47,993 INFO L225 Difference]: With dead ends: 160 [2022-11-19 08:21:47,994 INFO L226 Difference]: Without dead ends: 144 [2022-11-19 08:21:47,998 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 123 SyntacticMatches, 3 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3180 ImplicationChecksByTransitivity, 21.9s TimeCoverageRelationStatistics Valid=2135, Invalid=9421, Unknown=0, NotChecked=0, Total=11556 [2022-11-19 08:21:47,999 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 204 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 1184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 447 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:21:48,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 198 Invalid, 1184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 474 Invalid, 0 Unknown, 447 Unchecked, 1.1s Time] [2022-11-19 08:21:48,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-11-19 08:21:48,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 123. [2022-11-19 08:21:48,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 122 states have (on average 1.3278688524590163) internal successors, (162), 122 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:48,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 162 transitions. [2022-11-19 08:21:48,027 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 162 transitions. Word has length 30 [2022-11-19 08:21:48,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:21:48,028 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 162 transitions. [2022-11-19 08:21:48,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 54 states have (on average 1.6296296296296295) internal successors, (88), 54 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:48,028 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 162 transitions. [2022-11-19 08:21:48,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-11-19 08:21:48,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:21:48,030 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 4, 4, 1, 1, 1, 1, 1, 1] [2022-11-19 08:21:48,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-19 08:21:48,237 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2022-11-19 08:21:48,442 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:48,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:48,636 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 08:21:48,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:21:48,636 INFO L85 PathProgramCache]: Analyzing trace with hash -86914734, now seen corresponding path program 4 times [2022-11-19 08:21:48,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-19 08:21:48,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546697511] [2022-11-19 08:21:48,637 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 08:21:48,637 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 08:21:48,637 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/mathsat [2022-11-19 08:21:48,638 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:48,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 08:21:48,678 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 08:21:48,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:21:48,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 08:21:48,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:48,862 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 15 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:48,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:21:49,216 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 15 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:49,216 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-19 08:21:49,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546697511] [2022-11-19 08:21:49,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546697511] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:21:49,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [157933503] [2022-11-19 08:21:49,217 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 08:21:49,217 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-19 08:21:49,217 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/cvc4 [2022-11-19 08:21:49,219 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-19 08:21:49,239 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2022-11-19 08:21:49,297 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 08:21:49,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:21:49,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-19 08:21:49,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:49,384 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 15 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:49,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:21:49,506 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 15 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:49,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [157933503] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:21:49,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882499619] [2022-11-19 08:21:49,506 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 08:21:49,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:21:49,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:21:49,511 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:21:49,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-19 08:21:49,569 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 08:21:49,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:21:49,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-19 08:21:49,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:21:49,699 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 15 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:49,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:21:50,522 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:21:50,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882499619] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:21:50,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-19 08:21:50,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11, 11, 11, 13] total 31 [2022-11-19 08:21:50,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215286860] [2022-11-19 08:21:50,523 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-19 08:21:50,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-19 08:21:50,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-19 08:21:50,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-19 08:21:50,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=227, Invalid=703, Unknown=0, NotChecked=0, Total=930 [2022-11-19 08:21:50,525 INFO L87 Difference]: Start difference. First operand 123 states and 162 transitions. Second operand has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 31 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:50,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:21:50,734 INFO L93 Difference]: Finished difference Result 123 states and 162 transitions. [2022-11-19 08:21:50,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-19 08:21:50,736 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 31 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-11-19 08:21:50,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:21:50,736 INFO L225 Difference]: With dead ends: 123 [2022-11-19 08:21:50,736 INFO L226 Difference]: Without dead ends: 0 [2022-11-19 08:21:50,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=381, Invalid=1025, Unknown=0, NotChecked=0, Total=1406 [2022-11-19 08:21:50,738 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 93 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:21:50,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 37 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:21:50,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-19 08:21:50,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-19 08:21:50,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:50,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-19 08:21:50,740 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2022-11-19 08:21:50,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:21:50,740 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-19 08:21:50,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 2.6129032258064515) internal successors, (81), 31 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:21:50,741 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-19 08:21:50,741 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-19 08:21:50,743 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-19 08:21:50,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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)] Forceful destruction successful, exit code 0 [2022-11-19 08:21:50,959 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2022-11-19 08:21:51,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-19 08:21:51,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/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 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/cvc4 --incremental --print-success --lang smt,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:21:51,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-19 08:21:51,576 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-19 08:21:51,577 INFO L895 garLoopResultBuilder]: At program point L31-2(lines 31 38) the Hoare annotation is: (let ((.cse2 (= (_ bv1 8) |ULTIMATE.start_main_~y~0#1|)) (.cse4 (= |ULTIMATE.start_main_~y~0#1| (_ bv5 8))) (.cse0 (= |ULTIMATE.start_main_~bit~0#1| (_ bv0 8))) (.cse3 (= |ULTIMATE.start_main_~y~0#1| (_ bv37 8))) (.cse1 (= |ULTIMATE.start_main_~x~0#1| (_ bv37 8)))) (or (and .cse0 (= |ULTIMATE.start_main_~c~0#1| (_ bv2 8)) .cse1 .cse2) (and (= (_ bv1 8) |ULTIMATE.start_main_~c~0#1|) (not (= ((_ zero_extend 24) |ULTIMATE.start_main_~bit~0#1|) (_ bv0 32))) .cse1 .cse2) (and (= |ULTIMATE.start_main_~c~0#1| (_ bv8 8)) .cse3 .cse1) (and (= |ULTIMATE.start_main_~y~0#1| (_ bv0 8)) (= |ULTIMATE.start_main_~c~0#1| (_ bv0 8)) .cse1) (and (= |ULTIMATE.start_main_~c~0#1| (_ bv3 8)) .cse4 (= (_ bv4 8) |ULTIMATE.start_main_~bit~0#1|) .cse1) (and .cse4 (= |ULTIMATE.start_main_~c~0#1| (_ bv5 8)) .cse0 .cse1) (and (= |ULTIMATE.start_main_~c~0#1| (_ bv7 8)) .cse3 .cse1 (= |ULTIMATE.start_main_~bit~0#1| ((_ extract 7 0) (bvand (_ bv37 32) ((_ zero_extend 24) ((_ extract 7 0) (bvshl (_ bv1 32) ((_ zero_extend 24) |ULTIMATE.start_main_~c~0#1|)))))))) (and .cse4 .cse0 (= |ULTIMATE.start_main_~c~0#1| (_ bv4 8)) .cse1) (and (= (_ bv6 8) |ULTIMATE.start_main_~c~0#1|) .cse3 .cse1))) [2022-11-19 08:21:51,577 INFO L899 garLoopResultBuilder]: For program point L31-3(lines 31 38) no Hoare annotation was computed. [2022-11-19 08:21:51,577 INFO L899 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2022-11-19 08:21:51,577 INFO L902 garLoopResultBuilder]: At program point L15-2(lines 14 19) the Hoare annotation is: true [2022-11-19 08:21:51,577 INFO L899 garLoopResultBuilder]: For program point L34(lines 34 36) no Hoare annotation was computed. [2022-11-19 08:21:51,577 INFO L899 garLoopResultBuilder]: For program point L34-2(lines 34 36) no Hoare annotation was computed. [2022-11-19 08:21:51,577 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-19 08:21:51,577 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-19 08:21:51,577 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-19 08:21:51,578 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-11-19 08:21:51,578 INFO L899 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-11-19 08:21:51,578 INFO L902 garLoopResultBuilder]: At program point L41(lines 22 42) the Hoare annotation is: true [2022-11-19 08:21:51,581 INFO L444 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1] [2022-11-19 08:21:51,584 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-19 08:21:51,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:21:51 BoogieIcfgContainer [2022-11-19 08:21:51,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-19 08:21:51,623 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-19 08:21:51,623 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-19 08:21:51,624 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-19 08:21:51,624 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:21:15" (3/4) ... [2022-11-19 08:21:51,627 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-19 08:21:51,640 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-11-19 08:21:51,640 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-19 08:21:51,641 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-19 08:21:51,641 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-19 08:21:51,677 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/witness.graphml [2022-11-19 08:21:51,677 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-19 08:21:51,677 INFO L158 Benchmark]: Toolchain (without parser) took 36705.10ms. Allocated memory was 65.0MB in the beginning and 151.0MB in the end (delta: 86.0MB). Free memory was 46.0MB in the beginning and 48.7MB in the end (delta: -2.7MB). Peak memory consumption was 83.5MB. Max. memory is 16.1GB. [2022-11-19 08:21:51,678 INFO L158 Benchmark]: CDTParser took 0.33ms. Allocated memory is still 65.0MB. Free memory was 46.5MB in the beginning and 46.4MB in the end (delta: 48.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:21:51,678 INFO L158 Benchmark]: CACSL2BoogieTranslator took 320.36ms. Allocated memory is still 65.0MB. Free memory was 45.9MB in the beginning and 49.3MB in the end (delta: -3.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 08:21:51,678 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.35ms. Allocated memory is still 65.0MB. Free memory was 49.1MB in the beginning and 47.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:21:51,679 INFO L158 Benchmark]: Boogie Preprocessor took 27.89ms. Allocated memory is still 65.0MB. Free memory was 47.7MB in the beginning and 46.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-19 08:21:51,680 INFO L158 Benchmark]: RCFGBuilder took 394.72ms. Allocated memory is still 65.0MB. Free memory was 46.5MB in the beginning and 36.8MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-19 08:21:51,680 INFO L158 Benchmark]: TraceAbstraction took 35860.17ms. Allocated memory was 65.0MB in the beginning and 151.0MB in the end (delta: 86.0MB). Free memory was 36.1MB in the beginning and 50.8MB in the end (delta: -14.7MB). Peak memory consumption was 74.4MB. Max. memory is 16.1GB. [2022-11-19 08:21:51,681 INFO L158 Benchmark]: Witness Printer took 53.74ms. Allocated memory is still 151.0MB. Free memory was 50.8MB in the beginning and 48.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-19 08:21:51,684 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33ms. Allocated memory is still 65.0MB. Free memory was 46.5MB in the beginning and 46.4MB in the end (delta: 48.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 320.36ms. Allocated memory is still 65.0MB. Free memory was 45.9MB in the beginning and 49.3MB in the end (delta: -3.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.35ms. Allocated memory is still 65.0MB. Free memory was 49.1MB in the beginning and 47.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.89ms. Allocated memory is still 65.0MB. Free memory was 47.7MB in the beginning and 46.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 394.72ms. Allocated memory is still 65.0MB. Free memory was 46.5MB in the beginning and 36.8MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 35860.17ms. Allocated memory was 65.0MB in the beginning and 151.0MB in the end (delta: 86.0MB). Free memory was 36.1MB in the beginning and 50.8MB in the end (delta: -14.7MB). Peak memory consumption was 74.4MB. Max. memory is 16.1GB. * Witness Printer took 53.74ms. Allocated memory is still 151.0MB. Free memory was 50.8MB in the beginning and 48.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 35.7s, OverallIterations: 8, TraceHistogramMax: 8, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 19.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 457 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 457 mSDsluCounter, 441 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 447 IncrementalHoareTripleChecker+Unchecked, 366 mSDsCounter, 327 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 821 IncrementalHoareTripleChecker+Invalid, 1595 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 327 mSolverCounterUnsat, 75 mSDtfsCounter, 821 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 701 GetRequests, 503 SyntacticMatches, 5 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 3401 ImplicationChecksByTransitivity, 24.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=123occurred in iteration=7, InterpolantAutomatonStates: 145, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 50 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 14 NumberOfFragments, 121 HoareAnnotationTreeSize, 3 FomulaSimplifications, 46 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 238 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 11.0s InterpolantComputationTime, 336 NumberOfCodeBlocks, 336 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 618 ConstructedInterpolants, 48 QuantifiedInterpolants, 9834 SizeOfPredicates, 60 NumberOfNonLiveVariables, 809 ConjunctsInSsa, 162 ConjunctsInUnsatCore, 33 InterpolantComputations, 3 PerfectInterpolantSequences, 198/1375 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: ((((((((((bit == 0bv8 && c == 2bv8) && x == 37bv8) && 1bv8 == y) || (((1bv8 == c && !(~zero_extendFrom8To32(bit) == 0bv32)) && x == 37bv8) && 1bv8 == y)) || ((c == 8bv8 && y == 37bv8) && x == 37bv8)) || ((y == 0bv8 && c == 0bv8) && x == 37bv8)) || (((c == 3bv8 && y == 5bv8) && 4bv8 == bit) && x == 37bv8)) || (((y == 5bv8 && c == 5bv8) && bit == 0bv8) && x == 37bv8)) || (((c == 7bv8 && y == 37bv8) && x == 37bv8) && bit == ~bvand32(37bv32, ~zero_extendFrom8To32(~bvshl32(1bv32, ~zero_extendFrom8To32(c))[7:0]))[7:0])) || (((y == 5bv8 && bit == 0bv8) && c == 4bv8) && x == 37bv8)) || ((6bv8 == c && y == 37bv8) && x == 37bv8) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-19 08:21:51,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f62f0fbc-09c3-4ff7-abf3-1993edf90197/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE