./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh --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 fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 --- 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-2329fc7 [2022-12-14 08:52:51,371 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:52:51,373 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:52:51,392 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:52:51,392 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:52:51,393 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:52:51,395 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:52:51,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:52:51,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:52:51,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:52:51,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:52:51,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:52:51,401 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:52:51,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:52:51,403 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:52:51,404 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:52:51,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:52:51,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:52:51,408 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:52:51,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:52:51,411 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:52:51,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:52:51,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:52:51,414 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:52:51,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:52:51,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:52:51,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:52:51,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:52:51,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:52:51,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:52:51,421 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:52:51,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:52:51,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:52:51,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:52:51,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:52:51,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:52:51,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:52:51,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:52:51,425 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:52:51,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:52:51,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:52:51,427 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 08:52:51,447 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:52:51,448 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:52:51,448 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:52:51,448 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:52:51,449 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:52:51,449 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:52:51,449 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:52:51,450 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:52:51,450 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:52:51,450 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 08:52:51,450 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:52:51,450 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:52:51,450 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 08:52:51,451 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 08:52:51,451 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:52:51,451 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 08:52:51,451 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 08:52:51,452 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 08:52:51,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:52:51,452 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:52:51,453 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 08:52:51,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:52:51,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:52:51,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:52:51,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:52:51,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:52:51,454 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:52:51,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:52:51,454 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:52:51,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:52:51,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:52:51,455 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:52:51,455 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:52:51,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:52:51,455 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 08:52:51,456 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:52:51,456 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:52:51,456 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 08:52:51,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 08:52:51,456 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:52:51,456 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:52:51,457 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_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 [2022-12-14 08:52:51,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:52:51,664 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:52:51,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:52:51,667 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:52:51,667 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:52:51,668 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2022-12-14 08:52:54,213 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:52:54,358 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:52:54,359 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2022-12-14 08:52:54,363 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/data/298c47fb9/b71305c71f3545ae8e466a757fb8cfc0/FLAGb0972e3b2 [2022-12-14 08:52:54,375 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/data/298c47fb9/b71305c71f3545ae8e466a757fb8cfc0 [2022-12-14 08:52:54,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:52:54,378 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:52:54,378 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:52:54,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:52:54,381 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:52:54,381 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:52:54" (1/1) ... [2022-12-14 08:52:54,382 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fa3b0c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:54, skipping insertion in model container [2022-12-14 08:52:54,382 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:52:54" (1/1) ... [2022-12-14 08:52:54,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:52:54,398 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:52:54,497 WARN L237 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_bebf0681-34c6-4618-8253-5bf9b4e0c62b/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2022-12-14 08:52:54,504 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:52:54,512 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:52:54,521 WARN L237 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_bebf0681-34c6-4618-8253-5bf9b4e0c62b/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2022-12-14 08:52:54,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:52:54,534 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:52:54,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:54 WrapperNode [2022-12-14 08:52:54,535 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:52:54,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:52:54,536 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:52:54,536 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:52:54,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:54" (1/1) ... [2022-12-14 08:52:54,548 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:54" (1/1) ... [2022-12-14 08:52:54,561 INFO L138 Inliner]: procedures = 14, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 26 [2022-12-14 08:52:54,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:52:54,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:52:54,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:52:54,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:52:54,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:54" (1/1) ... [2022-12-14 08:52:54,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:54" (1/1) ... [2022-12-14 08:52:54,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:54" (1/1) ... [2022-12-14 08:52:54,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:54" (1/1) ... [2022-12-14 08:52:54,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:54" (1/1) ... [2022-12-14 08:52:54,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:54" (1/1) ... [2022-12-14 08:52:54,576 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:54" (1/1) ... [2022-12-14 08:52:54,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:54" (1/1) ... [2022-12-14 08:52:54,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:52:54,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:52:54,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:52:54,578 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:52:54,579 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:54" (1/1) ... [2022-12-14 08:52:54,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:52:54,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:52:54,601 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:52:54,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:52:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:52:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 08:52:54,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:52:54,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:52:54,686 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:52:54,688 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:52:54,757 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:52:54,777 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:52:54,777 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 08:52:54,779 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:52:54 BoogieIcfgContainer [2022-12-14 08:52:54,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:52:54,782 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:52:54,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:52:54,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:52:54,786 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:52:54" (1/3) ... [2022-12-14 08:52:54,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787afc62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:52:54, skipping insertion in model container [2022-12-14 08:52:54,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:54" (2/3) ... [2022-12-14 08:52:54,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@787afc62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:52:54, skipping insertion in model container [2022-12-14 08:52:54,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:52:54" (3/3) ... [2022-12-14 08:52:54,788 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div.i [2022-12-14 08:52:54,803 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:52:54,803 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 08:52:54,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:52:54,844 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;@759abd4b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:52:54,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 08:52:54,848 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) [2022-12-14 08:52:54,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-12-14 08:52:54,853 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:52:54,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-12-14 08:52:54,854 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:52:54,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:52:54,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1880294, now seen corresponding path program 1 times [2022-12-14 08:52:54,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 08:52:54,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935237981] [2022-12-14 08:52:54,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:52:54,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 08:52:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:52:54,957 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-14 08:52:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-14 08:52:54,988 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-12-14 08:52:54,990 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-14 08:52:54,991 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 08:52:54,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 08:52:54,996 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2022-12-14 08:52:54,999 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 08:52:55,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 08:52:55 BoogieIcfgContainer [2022-12-14 08:52:55,010 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 08:52:55,011 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 08:52:55,011 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 08:52:55,017 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 08:52:55,017 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:52:54" (3/4) ... [2022-12-14 08:52:55,019 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-12-14 08:52:55,020 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 08:52:55,020 INFO L158 Benchmark]: Toolchain (without parser) took 642.62ms. Allocated memory was 111.1MB in the beginning and 157.3MB in the end (delta: 46.1MB). Free memory was 76.1MB in the beginning and 129.0MB in the end (delta: -52.9MB). Peak memory consumption was 1.1MB. Max. memory is 16.1GB. [2022-12-14 08:52:55,021 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 111.1MB. Free memory was 75.8MB in the beginning and 75.8MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 08:52:55,021 INFO L158 Benchmark]: CACSL2BoogieTranslator took 156.74ms. Allocated memory is still 111.1MB. Free memory was 76.1MB in the beginning and 66.0MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 08:52:55,021 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.02ms. Allocated memory is still 111.1MB. Free memory was 66.0MB in the beginning and 64.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:52:55,022 INFO L158 Benchmark]: Boogie Preprocessor took 15.36ms. Allocated memory is still 111.1MB. Free memory was 64.8MB in the beginning and 63.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 08:52:55,022 INFO L158 Benchmark]: RCFGBuilder took 201.77ms. Allocated memory is still 111.1MB. Free memory was 63.5MB in the beginning and 54.3MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 08:52:55,023 INFO L158 Benchmark]: TraceAbstraction took 228.39ms. Allocated memory was 111.1MB in the beginning and 157.3MB in the end (delta: 46.1MB). Free memory was 53.5MB in the beginning and 126.6MB in the end (delta: -73.1MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. [2022-12-14 08:52:55,023 INFO L158 Benchmark]: Witness Printer took 8.71ms. Allocated memory is still 157.3MB. Free memory was 126.5MB in the beginning and 129.0MB in the end (delta: -2.5MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2022-12-14 08:52:55,025 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 111.1MB. Free memory was 75.8MB in the beginning and 75.8MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 156.74ms. Allocated memory is still 111.1MB. Free memory was 76.1MB in the beginning and 66.0MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.02ms. Allocated memory is still 111.1MB. Free memory was 66.0MB in the beginning and 64.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.36ms. Allocated memory is still 111.1MB. Free memory was 64.8MB in the beginning and 63.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 201.77ms. Allocated memory is still 111.1MB. Free memory was 63.5MB in the beginning and 54.3MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 228.39ms. Allocated memory was 111.1MB in the beginning and 157.3MB in the end (delta: 46.1MB). Free memory was 53.5MB in the beginning and 126.6MB in the end (delta: -73.1MB). Peak memory consumption was 17.1MB. Max. memory is 16.1GB. * Witness Printer took 8.71ms. Allocated memory is still 157.3MB. Free memory was 126.5MB in the beginning and 129.0MB in the end (delta: -2.5MB). Peak memory consumption was 4.9MB. 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: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 23, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L20] float x = 1.0f; [L21] float x1 = x/2.5f; VAL [x=1] [L23] COND FALSE !(x1 != x) [L29] CALL __VERIFIER_assert(x == 0) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] 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: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-12-14 08:52:55,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh --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 fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 --- 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-2329fc7 [2022-12-14 08:52:56,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 08:52:56,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 08:52:56,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 08:52:56,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 08:52:56,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 08:52:56,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 08:52:56,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 08:52:56,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 08:52:56,636 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 08:52:56,637 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 08:52:56,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 08:52:56,638 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 08:52:56,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 08:52:56,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 08:52:56,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 08:52:56,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 08:52:56,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 08:52:56,642 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 08:52:56,643 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 08:52:56,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 08:52:56,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 08:52:56,646 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 08:52:56,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 08:52:56,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 08:52:56,649 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 08:52:56,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 08:52:56,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 08:52:56,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 08:52:56,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 08:52:56,651 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 08:52:56,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 08:52:56,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 08:52:56,652 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 08:52:56,658 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 08:52:56,658 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 08:52:56,659 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 08:52:56,659 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 08:52:56,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 08:52:56,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 08:52:56,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 08:52:56,661 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-12-14 08:52:56,677 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 08:52:56,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 08:52:56,678 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 08:52:56,678 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 08:52:56,679 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 08:52:56,679 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 08:52:56,679 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 08:52:56,679 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 08:52:56,679 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 08:52:56,679 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 08:52:56,680 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 08:52:56,680 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 08:52:56,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 08:52:56,680 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 08:52:56,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 08:52:56,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 08:52:56,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 08:52:56,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 08:52:56,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 08:52:56,681 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-14 08:52:56,681 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-14 08:52:56,682 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-14 08:52:56,682 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 08:52:56,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 08:52:56,682 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 08:52:56,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 08:52:56,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 08:52:56,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-14 08:52:56,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 08:52:56,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:52:56,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 08:52:56,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 08:52:56,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 08:52:56,684 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-12-14 08:52:56,684 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-14 08:52:56,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 08:52:56,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 08:52:56,684 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-14 08:52:56,684 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_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fe4b2ac8b2a0e269dd16c91161494638306526c517de7ea644739142e1210da9 [2022-12-14 08:52:56,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 08:52:56,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 08:52:56,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 08:52:56,928 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 08:52:56,929 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 08:52:56,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2022-12-14 08:52:59,473 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 08:52:59,615 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 08:52:59,615 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/sv-benchmarks/c/floats-esbmc-regression/Float_div.i [2022-12-14 08:52:59,619 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/data/b5ac61a71/0b48600dcd7847049dd240b08cfc66de/FLAGff6c38954 [2022-12-14 08:52:59,630 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/data/b5ac61a71/0b48600dcd7847049dd240b08cfc66de [2022-12-14 08:52:59,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 08:52:59,632 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 08:52:59,633 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 08:52:59,633 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 08:52:59,636 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 08:52:59,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:52:59" (1/1) ... [2022-12-14 08:52:59,637 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f92e451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:59, skipping insertion in model container [2022-12-14 08:52:59,637 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 08:52:59" (1/1) ... [2022-12-14 08:52:59,648 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 08:52:59,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 08:52:59,795 WARN L237 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_bebf0681-34c6-4618-8253-5bf9b4e0c62b/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2022-12-14 08:52:59,805 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:52:59,819 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 08:52:59,831 WARN L237 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_bebf0681-34c6-4618-8253-5bf9b4e0c62b/sv-benchmarks/c/floats-esbmc-regression/Float_div.i[803,816] [2022-12-14 08:52:59,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 08:52:59,848 INFO L208 MainTranslator]: Completed translation [2022-12-14 08:52:59,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:59 WrapperNode [2022-12-14 08:52:59,849 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 08:52:59,850 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 08:52:59,850 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 08:52:59,851 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 08:52:59,857 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:59" (1/1) ... [2022-12-14 08:52:59,864 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:59" (1/1) ... [2022-12-14 08:52:59,876 INFO L138 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2022-12-14 08:52:59,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 08:52:59,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 08:52:59,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 08:52:59,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 08:52:59,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:59" (1/1) ... [2022-12-14 08:52:59,883 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:59" (1/1) ... [2022-12-14 08:52:59,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:59" (1/1) ... [2022-12-14 08:52:59,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:59" (1/1) ... [2022-12-14 08:52:59,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:59" (1/1) ... [2022-12-14 08:52:59,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:59" (1/1) ... [2022-12-14 08:52:59,892 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:59" (1/1) ... [2022-12-14 08:52:59,892 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:59" (1/1) ... [2022-12-14 08:52:59,894 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 08:52:59,894 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 08:52:59,895 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 08:52:59,895 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 08:52:59,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:59" (1/1) ... [2022-12-14 08:52:59,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 08:52:59,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:52:59,921 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 08:52:59,923 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 08:52:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 08:52:59,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-12-14 08:52:59,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 08:52:59,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 08:53:00,018 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 08:53:00,020 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 08:53:00,533 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 08:53:00,536 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 08:53:00,537 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 08:53:00,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:53:00 BoogieIcfgContainer [2022-12-14 08:53:00,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 08:53:00,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 08:53:00,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 08:53:00,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 08:53:00,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 08:52:59" (1/3) ... [2022-12-14 08:53:00,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a7d5ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:53:00, skipping insertion in model container [2022-12-14 08:53:00,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 08:52:59" (2/3) ... [2022-12-14 08:53:00,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13a7d5ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 08:53:00, skipping insertion in model container [2022-12-14 08:53:00,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:53:00" (3/3) ... [2022-12-14 08:53:00,544 INFO L112 eAbstractionObserver]: Analyzing ICFG Float_div.i [2022-12-14 08:53:00,557 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 08:53:00,557 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 08:53:00,598 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 08:53:00,604 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;@6a529909, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 08:53:00,604 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 08:53:00,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-14 08:53:00,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-12-14 08:53:00,612 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:00,612 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-14 08:53:00,612 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:53:00,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:00,616 INFO L85 PathProgramCache]: Analyzing trace with hash 889633835, now seen corresponding path program 1 times [2022-12-14 08:53:00,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:53:00,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1463157471] [2022-12-14 08:53:00,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:00,626 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 [2022-12-14 08:53:00,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:53:00,627 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 08:53:00,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 08:53:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:00,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-14 08:53:00,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:02,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:02,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 08:53:02,182 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:53:02,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1463157471] [2022-12-14 08:53:02,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1463157471] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 08:53:02,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 08:53:02,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-14 08:53:02,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442375709] [2022-12-14 08:53:02,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 08:53:02,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 08:53:02,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:53:02,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 08:53:02,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 08:53:02,215 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 10 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 1.5) 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) [2022-12-14 08:53:03,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:03,602 INFO L93 Difference]: Finished difference Result 20 states and 24 transitions. [2022-12-14 08:53:03,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 08:53:03,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) 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 [2022-12-14 08:53:03,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:03,688 INFO L225 Difference]: With dead ends: 20 [2022-12-14 08:53:03,688 INFO L226 Difference]: Without dead ends: 8 [2022-12-14 08:53:03,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 08:53:03,692 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 11 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 08:53:03,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 15 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 08:53:03,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-12-14 08:53:03,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-12-14 08:53:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2022-12-14 08:53:03,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2022-12-14 08:53:03,712 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2022-12-14 08:53:03,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:03,712 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2022-12-14 08:53:03,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) 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) [2022-12-14 08:53:03,713 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2022-12-14 08:53:03,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-12-14 08:53:03,713 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:03,713 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-14 08:53:03,723 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 08:53:03,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:03,916 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:53:03,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:03,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1810510480, now seen corresponding path program 1 times [2022-12-14 08:53:03,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:53:03,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1400824852] [2022-12-14 08:53:03,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:03,920 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 [2022-12-14 08:53:03,921 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:53:03,924 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 08:53:03,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 08:53:04,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:04,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 08:53:04,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:06,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:06,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:09,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:09,490 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:53:09,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1400824852] [2022-12-14 08:53:09,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1400824852] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:09,490 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1123040633] [2022-12-14 08:53:09,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:09,490 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:53:09,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:53:09,491 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:53:09,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-12-14 08:53:09,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:09,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 08:53:09,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:14,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:14,103 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:14,322 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:14,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1123040633] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:14,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419013772] [2022-12-14 08:53:14,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 08:53:14,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:53:14,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:53:14,324 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:53:14,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 08:53:15,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 08:53:15,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-14 08:53:15,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:15,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:15,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:53:16,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 08:53:16,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419013772] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:53:16,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 08:53:16,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4, 4] total 9 [2022-12-14 08:53:16,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092457282] [2022-12-14 08:53:16,140 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 08:53:16,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-14 08:53:16,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:53:16,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-14 08:53:16,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=48, Unknown=1, NotChecked=0, Total=72 [2022-12-14 08:53:16,141 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2022-12-14 08:53:24,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 08:53:27,213 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 08:53:29,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 08:53:31,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 08:53:31,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:53:31,885 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2022-12-14 08:53:31,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 08:53:31,905 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-12-14 08:53:31,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:53:31,905 INFO L225 Difference]: With dead ends: 15 [2022-12-14 08:53:31,905 INFO L226 Difference]: Without dead ends: 11 [2022-12-14 08:53:31,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 14.0s TimeCoverageRelationStatistics Valid=51, Invalid=104, Unknown=1, NotChecked=0, Total=156 [2022-12-14 08:53:31,907 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 9 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-12-14 08:53:31,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 11 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 4 Unknown, 0 Unchecked, 10.0s Time] [2022-12-14 08:53:31,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2022-12-14 08:53:31,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2022-12-14 08:53:31,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.1) internal successors, (11), 10 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) [2022-12-14 08:53:31,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2022-12-14 08:53:31,911 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2022-12-14 08:53:31,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:53:31,911 INFO L495 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2022-12-14 08:53:31,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2022-12-14 08:53:31,911 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2022-12-14 08:53:31,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-12-14 08:53:31,912 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:53:31,912 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-12-14 08:53:31,927 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 08:53:32,123 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2022-12-14 08:53:32,348 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/mathsat -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 [2022-12-14 08:53:32,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:53:32,516 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:53:32,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:53:32,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1922847381, now seen corresponding path program 2 times [2022-12-14 08:53:32,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:53:32,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988588152] [2022-12-14 08:53:32,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 08:53:32,521 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 [2022-12-14 08:53:32,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:53:32,522 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 08:53:32,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-14 08:53:32,741 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 08:53:32,741 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:53:32,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 08:53:32,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:53:43,382 WARN L859 $PredicateComparison]: unable to prove that (and (= (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0)) |c_ULTIMATE.start_main_~x1~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2022-12-14 08:53:49,215 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse0)) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) .cse0) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-12-14 08:53:51,657 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-12-14 08:53:51,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:54:07,010 WARN L233 SmtUtils]: Spent 5.66s on a formula simplification that was a NOOP. DAG size: 11 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:54:16,530 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2022-12-14 08:54:18,587 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2022-12-14 08:54:29,303 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2022-12-14 08:54:31,395 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2022-12-14 08:54:42,400 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2022-12-14 08:54:44,525 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1) .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2022-12-14 08:54:54,742 WARN L233 SmtUtils]: Spent 5.85s on a formula simplification. DAG size of input: 12 DAG size of output: 1 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-12-14 08:54:56,851 WARN L837 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from false [2022-12-14 08:54:58,964 WARN L859 $PredicateComparison]: unable to prove that (not (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)))) is different from true [2022-12-14 08:54:58,965 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-12-14 08:54:58,965 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 08:54:58,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [988588152] [2022-12-14 08:54:58,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [988588152] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:54:58,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [918866295] [2022-12-14 08:54:58,965 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 08:54:58,966 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-14 08:54:58,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/cvc4 [2022-12-14 08:54:58,967 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-14 08:54:58,968 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2022-12-14 08:54:59,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 08:54:59,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:54:59,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-14 08:54:59,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:55:12,172 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-12-14 08:55:12,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:55:50,108 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from false [2022-12-14 08:55:52,217 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1) .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0))))) is different from true [2022-12-14 08:55:52,217 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-12-14 08:55:52,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [918866295] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:55:52,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1514283727] [2022-12-14 08:55:52,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-14 08:55:52,218 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 08:55:52,218 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 08:55:52,219 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 08:55:52,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 08:55:58,498 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-14 08:55:58,498 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:55:58,573 WARN L261 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-14 08:55:58,574 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 08:56:04,489 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse0)) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from true [2022-12-14 08:56:11,691 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 7 not checked. [2022-12-14 08:56:11,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 08:56:44,978 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (or (fp.eq .cse0 |c_ULTIMATE.start_main_~x1~0#1|) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2022-12-14 08:56:47,038 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1))) (or (fp.eq .cse0 |c_ULTIMATE.start_main_~x1~0#1|) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true [2022-12-14 08:57:02,099 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse1 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse2))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 .cse2))) (or (fp.eq .cse0 .cse1) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse2) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from false [2022-12-14 08:57:04,192 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse1 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse2))) (let ((.cse0 (fp.div c_currentRoundingMode .cse1 .cse2))) (or (fp.eq .cse0 .cse1) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse2) .cse0)) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from true [2022-12-14 08:57:19,681 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse2 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1))) (let ((.cse0 (fp.div c_currentRoundingMode .cse2 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 .cse2) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from false [2022-12-14 08:57:21,810 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse2 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse1) .cse1))) (let ((.cse0 (fp.div c_currentRoundingMode .cse2 .cse1))) (or (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 .cse2) (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))))) is different from true [2022-12-14 08:57:37,128 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse2 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (let ((.cse0 (fp.div c_currentRoundingMode .cse2 .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 .cse2))))) is different from false [2022-12-14 08:57:39,238 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse2 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse1) .cse1) .cse1))) (let ((.cse0 (fp.div c_currentRoundingMode .cse2 .cse1))) (or (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))) (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse1) .cse0)) (fp.eq .cse0 .cse2))))) is different from true [2022-12-14 08:57:39,239 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 9 not checked. [2022-12-14 08:57:39,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1514283727] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 08:57:39,239 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-12-14 08:57:39,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7, 9, 7, 9] total 22 [2022-12-14 08:57:39,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489465230] [2022-12-14 08:57:39,240 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-12-14 08:57:39,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-14 08:57:39,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 08:57:39,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-14 08:57:39,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=77, Unknown=27, NotChecked=348, Total=506 [2022-12-14 08:57:39,241 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 22 states have internal predecessors, (29), 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) [2022-12-14 08:57:40,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-12-14 08:57:42,615 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse3 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse4) .cse4) .cse4))) (let ((.cse2 (fp.div c_currentRoundingMode .cse3 .cse4))) (let ((.cse0 (fp.eq .cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (.cse1 (not (fp.eq (fp.div c_currentRoundingMode .cse2 .cse4) .cse2)))) (and (or .cse0 .cse1) .cse1 (or .cse0 .cse1 (fp.eq .cse2 .cse3)) (= c_currentRoundingMode roundNearestTiesToEven)))))) is different from true [2022-12-14 08:57:44,751 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse2 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse4) .cse4))) (let ((.cse1 (fp.div c_currentRoundingMode .cse2 .cse4))) (let ((.cse0 (not (fp.eq (fp.div c_currentRoundingMode .cse1 .cse4) .cse1))) (.cse3 (fp.eq .cse1 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (and (or .cse0 (fp.eq .cse1 .cse2) .cse3) (or .cse0 .cse3) (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse4)) (= c_currentRoundingMode roundNearestTiesToEven)))))) is different from true [2022-12-14 08:57:46,856 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse4 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse3 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse4))) (let ((.cse2 (fp.div c_currentRoundingMode .cse3 .cse4))) (let ((.cse0 (not (fp.eq (fp.div c_currentRoundingMode .cse2 .cse4) .cse2))) (.cse1 (fp.eq .cse2 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (and (or .cse0 .cse1) (or (fp.eq .cse2 .cse3) .cse0 .cse1) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse4) .cse4) |c_ULTIMATE.start_main_~x1~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)))))) is different from true [2022-12-14 08:57:49,631 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse3 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse0 (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse3))) (let ((.cse1 (not (fp.eq (fp.div c_currentRoundingMode .cse0 .cse3) .cse0))) (.cse2 (fp.eq .cse0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32))))) (and (or (fp.eq .cse0 |c_ULTIMATE.start_main_~x1~0#1|) .cse1 .cse2) (= (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse3) .cse3) .cse3) |c_ULTIMATE.start_main_~x1~0#1|) (or .cse1 .cse2) (= c_currentRoundingMode roundNearestTiesToEven))))) is different from true [2022-12-14 08:57:53,254 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (let ((.cse1 (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode 1.0) .cse0) .cse0) .cse0))) (and (or (not (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x1~0#1| .cse0) |c_ULTIMATE.start_main_~x1~0#1|)) (fp.eq |c_ULTIMATE.start_main_~x1~0#1| ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))) (= |c_ULTIMATE.start_main_~x1~0#1| (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse0)) (= .cse1 |c_ULTIMATE.start_main_~x~0#1|) (= (fp.div c_currentRoundingMode .cse1 .cse0) |c_ULTIMATE.start_main_~x1~0#1|) (= c_currentRoundingMode roundNearestTiesToEven)))) is different from true [2022-12-14 08:58:17,362 WARN L233 SmtUtils]: Spent 13.17s on a formula simplification. DAG size of input: 23 DAG size of output: 17 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:58:32,408 WARN L233 SmtUtils]: Spent 8.92s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:58:44,880 WARN L233 SmtUtils]: Spent 8.49s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:58:47,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 08:59:01,564 WARN L233 SmtUtils]: Spent 7.26s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:59:03,694 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 08:59:05,726 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 08:59:26,005 WARN L233 SmtUtils]: Spent 10.94s on a formula simplification that was a NOOP. DAG size: 16 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 08:59:28,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 08:59:30,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 08:59:32,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 08:59:34,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 08:59:36,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, RoundingMode, FloatingPoint, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-14 08:59:36,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 08:59:36,971 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2022-12-14 08:59:36,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-14 08:59:36,994 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 22 states have internal predecessors, (29), 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 10 [2022-12-14 08:59:36,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 08:59:36,995 INFO L225 Difference]: With dead ends: 20 [2022-12-14 08:59:36,995 INFO L226 Difference]: Without dead ends: 14 [2022-12-14 08:59:36,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 17 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 174.3s TimeCoverageRelationStatistics Valid=110, Invalid=188, Unknown=42, NotChecked=782, Total=1122 [2022-12-14 08:59:36,997 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 20 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 6 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 20.8s IncrementalHoareTripleChecker+Time [2022-12-14 08:59:36,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 13 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 27 Invalid, 8 Unknown, 110 Unchecked, 20.8s Time] [2022-12-14 08:59:36,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-12-14 08:59:37,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-12-14 08:59:37,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 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) [2022-12-14 08:59:37,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-12-14 08:59:37,002 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 10 [2022-12-14 08:59:37,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 08:59:37,002 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-12-14 08:59:37,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 22 states have internal predecessors, (29), 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) [2022-12-14 08:59:37,002 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-12-14 08:59:37,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-12-14 08:59:37,003 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 08:59:37,003 INFO L195 NwaCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1] [2022-12-14 08:59:37,010 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2022-12-14 08:59:37,264 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-14 08:59:37,420 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-14 08:59:37,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/cvc4 --incremental --print-success --lang smt,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 08:59:37,606 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 08:59:37,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 08:59:37,609 INFO L85 PathProgramCache]: Analyzing trace with hash 86212784, now seen corresponding path program 3 times [2022-12-14 08:59:37,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-12-14 08:59:37,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985421624] [2022-12-14 08:59:37,611 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-14 08:59:37,611 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 [2022-12-14 08:59:37,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/mathsat [2022-12-14 08:59:37,612 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/mathsat -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) [2022-12-14 08:59:37,613 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-14 08:59:37,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-14 08:59:37,843 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-14 08:59:37,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-14 08:59:37,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 09:00:00,678 WARN L233 SmtUtils]: Spent 8.18s on a formula simplification that was a NOOP. DAG size: 17 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 09:00:15,700 WARN L837 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 8 24) c_currentRoundingMode (/ 5.0 2.0)))) (and (exists ((|v_ULTIMATE.start_main_~x~0#1_29| (_ FloatingPoint 8 24))) (let ((.cse0 (fp.div c_currentRoundingMode |v_ULTIMATE.start_main_~x~0#1_29| .cse1))) (and (= |c_ULTIMATE.start_main_~x~0#1| .cse0) (not (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_29|))))) (fp.eq (fp.div c_currentRoundingMode |c_ULTIMATE.start_main_~x~0#1| .cse1) |c_ULTIMATE.start_main_~x~0#1|) (= c_currentRoundingMode roundNearestTiesToEven))) is different from false [2022-12-14 09:00:34,397 WARN L837 $PredicateComparison]: unable to prove that (or (and (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv0 32)) (exists ((|v_ULTIMATE.start_main_~x~0#1_29| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~x~0#1_29| .cse1))) (and (not (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_29|)) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0)))))) (= |c_ULTIMATE.start___VERIFIER_assert_~cond#1| (_ bv1 32))) is different from false [2022-12-14 09:00:49,546 WARN L837 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~x~0#1_29| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~x~0#1_29| .cse1))) (and (not (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_29|)) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from false [2022-12-14 09:00:51,575 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~x~0#1_29| (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) roundNearestTiesToEven (/ 5.0 2.0)))) (let ((.cse0 (fp.div roundNearestTiesToEven |v_ULTIMATE.start_main_~x~0#1_29| .cse1))) (and (not (fp.eq .cse0 |v_ULTIMATE.start_main_~x~0#1_29|)) (not (fp.eq .cse0 ((_ to_fp 8 24) roundNearestTiesToEven (_ bv0 32)))) (fp.eq (fp.div roundNearestTiesToEven .cse0 .cse1) .cse0))))) is different from true [2022-12-14 09:00:51,576 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-12-14 09:00:51,576 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 09:00:51,576 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-12-14 09:00:51,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1985421624] [2022-12-14 09:00:51,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1985421624] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 09:00:51,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 09:00:51,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 09:00:51,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997408898] [2022-12-14 09:00:51,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 09:00:51,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 09:00:51,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-12-14 09:00:51,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 09:00:51,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=11, Unknown=5, NotChecked=24, Total=56 [2022-12-14 09:00:51,577 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) [2022-12-14 09:00:54,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:00:57,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real], hasArrays=false, hasNonlinArith=false, quantifiers [0] [2022-12-14 09:00:57,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 09:00:57,094 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2022-12-14 09:00:57,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-14 09:00:57,140 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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 13 [2022-12-14 09:00:57,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 09:00:57,141 INFO L225 Difference]: With dead ends: 14 [2022-12-14 09:00:57,141 INFO L226 Difference]: Without dead ends: 0 [2022-12-14 09:00:57,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.4s TimeCoverageRelationStatistics Valid=16, Invalid=11, Unknown=5, NotChecked=24, Total=56 [2022-12-14 09:00:57,142 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-12-14 09:00:57,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 2 Invalid, 2 Unknown, 7 Unchecked, 5.5s Time] [2022-12-14 09:00:57,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-12-14 09:00:57,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-12-14 09:00:57,143 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) [2022-12-14 09:00:57,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-12-14 09:00:57,143 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2022-12-14 09:00:57,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 09:00:57,143 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-12-14 09:00:57,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 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) [2022-12-14 09:00:57,143 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-12-14 09:00:57,146 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-12-14 09:00:57,149 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-12-14 09:00:57,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-12-14 09:00:57,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-14 09:00:57,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-12-14 09:02:39,246 WARN L233 SmtUtils]: Spent 1.70m on a formula simplification. DAG size of input: 72 DAG size of output: 17 (called from [L 149] de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.HoareAnnotationComposer.combineInter) [2022-12-14 09:02:39,263 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-12-14 09:02:39,264 INFO L895 garLoopResultBuilder]: At program point L23-2(lines 23 27) the Hoare annotation is: (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode (/ 5.0 2.0)))) (and (= (fp.div currentRoundingMode |ULTIMATE.start_main_~x~0#1| .cse0) |ULTIMATE.start_main_~x1~0#1|) (exists ((|v_ULTIMATE.start_main_~x~0#1_29| (_ FloatingPoint 8 24))) (let ((.cse1 (fp.div currentRoundingMode |v_ULTIMATE.start_main_~x~0#1_29| .cse0))) (and (= .cse1 |ULTIMATE.start_main_~x~0#1|) (not (fp.eq .cse1 |v_ULTIMATE.start_main_~x~0#1_29|))))) (= currentRoundingMode roundNearestTiesToEven))) [2022-12-14 09:02:39,264 INFO L899 garLoopResultBuilder]: For program point L23-3(lines 23 27) no Hoare annotation was computed. [2022-12-14 09:02:39,264 INFO L899 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2022-12-14 09:02:39,264 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2022-12-14 09:02:39,264 INFO L895 garLoopResultBuilder]: At program point L13-3(line 13) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2022-12-14 09:02:39,264 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2022-12-14 09:02:39,264 INFO L895 garLoopResultBuilder]: At program point main_returnLabel#1(lines 18 31) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2022-12-14 09:02:39,264 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-12-14 09:02:39,265 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-12-14 09:02:39,265 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-12-14 09:02:39,268 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1] [2022-12-14 09:02:39,271 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-14 09:02:39,279 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 09:02:39,283 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 09:02:39,284 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_29,QUANTIFIED] [2022-12-14 09:02:39,284 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_29,QUANTIFIED] [2022-12-14 09:02:39,284 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_29,QUANTIFIED] [2022-12-14 09:02:39,285 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 09:02:39,286 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_29,QUANTIFIED] [2022-12-14 09:02:39,286 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_29,QUANTIFIED] [2022-12-14 09:02:39,286 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_29,QUANTIFIED] [2022-12-14 09:02:39,286 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 09:02:39,287 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 09:02:39,287 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 09:02:39,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.12 09:02:39 BoogieIcfgContainer [2022-12-14 09:02:39,288 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-14 09:02:39,288 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-12-14 09:02:39,288 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-12-14 09:02:39,289 INFO L275 PluginConnector]: Witness Printer initialized [2022-12-14 09:02:39,289 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 08:53:00" (3/4) ... [2022-12-14 09:02:39,292 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-12-14 09:02:39,301 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2022-12-14 09:02:39,302 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-12-14 09:02:39,302 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-12-14 09:02:39,302 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-12-14 09:02:39,328 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~fp.div~FLOAT(unknown-currentRoundingMode-unknown, x, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) == x1 && (\exists v_ULTIMATE.start_main_~x~0#1_29 : C_FLOAT :: ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0#1_29, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) == x && !~fp.eq~FLOAT(~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0#1_29, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)), v_ULTIMATE.start_main_~x~0#1_29))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven [2022-12-14 09:02:39,331 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/witness.graphml [2022-12-14 09:02:39,331 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-12-14 09:02:39,331 INFO L158 Benchmark]: Toolchain (without parser) took 579698.78ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 25.9MB in the beginning and 53.7MB in the end (delta: -27.8MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2022-12-14 09:02:39,331 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 58.7MB. Free memory is still 37.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:02:39,332 INFO L158 Benchmark]: CACSL2BoogieTranslator took 216.17ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 25.6MB in the beginning and 47.6MB in the end (delta: -22.0MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. [2022-12-14 09:02:39,332 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.77ms. Allocated memory is still 75.5MB. Free memory was 47.6MB in the beginning and 46.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:02:39,332 INFO L158 Benchmark]: Boogie Preprocessor took 17.51ms. Allocated memory is still 75.5MB. Free memory was 46.1MB in the beginning and 44.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-12-14 09:02:39,333 INFO L158 Benchmark]: RCFGBuilder took 643.49ms. Allocated memory is still 75.5MB. Free memory was 44.8MB in the beginning and 36.1MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-12-14 09:02:39,333 INFO L158 Benchmark]: TraceAbstraction took 578748.58ms. Allocated memory is still 75.5MB. Free memory was 35.3MB in the beginning and 40.5MB in the end (delta: -5.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-12-14 09:02:39,333 INFO L158 Benchmark]: Witness Printer took 42.44ms. Allocated memory is still 75.5MB. Free memory was 40.5MB in the beginning and 53.7MB in the end (delta: -13.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-12-14 09:02:39,335 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 58.7MB. Free memory is still 37.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 216.17ms. Allocated memory was 58.7MB in the beginning and 75.5MB in the end (delta: 16.8MB). Free memory was 25.6MB in the beginning and 47.6MB in the end (delta: -22.0MB). Peak memory consumption was 3.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.77ms. Allocated memory is still 75.5MB. Free memory was 47.6MB in the beginning and 46.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.51ms. Allocated memory is still 75.5MB. Free memory was 46.1MB in the beginning and 44.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 643.49ms. Allocated memory is still 75.5MB. Free memory was 44.8MB in the beginning and 36.1MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 578748.58ms. Allocated memory is still 75.5MB. Free memory was 35.3MB in the beginning and 40.5MB in the end (delta: -5.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 42.44ms. Allocated memory is still 75.5MB. Free memory was 40.5MB in the beginning and 53.7MB in the end (delta: -13.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_29,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * 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: 13]: 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, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 578.7s, OverallIterations: 4, TraceHistogramMax: 7, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 140.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 101.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 mSolverCounterUnknown, 40 SdHoareTripleChecker+Valid, 36.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 40 mSDsluCounter, 41 SdHoareTripleChecker+Invalid, 36.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 117 IncrementalHoareTripleChecker+Unchecked, 25 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 52 IncrementalHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 16 mSDtfsCounter, 52 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 123 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 20 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 212.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=3, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 12 NumberOfFragments, 37 HoareAnnotationTreeSize, 3 FomulaSimplifications, 38 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 721 FormulaSimplificationTreeSizeReductionInter, 101.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 8.9s SatisfiabilityAnalysisTime, 325.3s InterpolantComputationTime, 70 NumberOfCodeBlocks, 67 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 107 ConstructedInterpolants, 5 QuantifiedInterpolants, 1580 SizeOfPredicates, 35 NumberOfNonLiveVariables, 217 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 28/94 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: 18]: Loop Invariant [2022-12-14 09:02:39,342 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 09:02:39,342 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 23]: Loop Invariant [2022-12-14 09:02:39,343 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_29,QUANTIFIED] [2022-12-14 09:02:39,343 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_29,QUANTIFIED] [2022-12-14 09:02:39,343 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_29,QUANTIFIED] [2022-12-14 09:02:39,343 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 09:02:39,343 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_29,QUANTIFIED] [2022-12-14 09:02:39,343 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_29,QUANTIFIED] [2022-12-14 09:02:39,343 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_~x~0#1_29,QUANTIFIED] [2022-12-14 09:02:39,343 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: (~fp.div~FLOAT(unknown-currentRoundingMode-unknown, x, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) == x1 && (\exists v_ULTIMATE.start_main_~x~0#1_29 : C_FLOAT :: ~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0#1_29, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)) == x && !~fp.eq~FLOAT(~fp.div~FLOAT(unknown-currentRoundingMode-unknown, v_ULTIMATE.start_main_~x~0#1_29, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 5/2)), v_ULTIMATE.start_main_~x~0#1_29))) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 13]: Loop Invariant [2022-12-14 09:02:39,344 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2022-12-14 09:02:39,344 WARN L421 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven RESULT: Ultimate proved your program to be correct! [2022-12-14 09:02:39,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bebf0681-34c6-4618-8253-5bf9b4e0c62b/bin/utaipan-gh47qXpMRh/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