./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c12eaf00463983fc4c27f56efba3b68bea09d23ae311c93edfb6c8bce7a55280 --- 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-6b4ec56 [2022-11-20 10:56:42,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:56:42,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:56:42,334 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:56:42,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:56:42,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:56:42,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:56:42,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:56:42,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:56:42,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:56:42,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:56:42,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:56:42,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:56:42,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:56:42,354 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:56:42,356 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:56:42,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:56:42,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:56:42,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:56:42,364 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:56:42,367 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:56:42,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:56:42,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:56:42,383 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:56:42,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:56:42,397 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:56:42,398 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:56:42,399 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:56:42,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:56:42,401 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:56:42,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:56:42,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:56:42,403 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:56:42,406 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:56:42,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:56:42,409 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:56:42,410 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:56:42,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:56:42,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:56:42,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:56:42,416 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:56:42,417 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 10:56:42,466 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:56:42,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:56:42,467 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:56:42,467 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:56:42,468 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:56:42,469 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:56:42,470 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:56:42,470 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:56:42,471 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:56:42,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:56:42,472 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:56:42,473 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 10:56:42,473 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:56:42,473 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:56:42,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:56:42,474 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:56:42,474 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:56:42,474 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:56:42,475 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:56:42,475 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:56:42,475 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:56:42,475 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:56:42,476 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:56:42,476 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:56:42,476 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:56:42,477 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:56:42,477 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:56:42,477 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:56:42,478 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 10:56:42,478 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 10:56:42,479 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:56:42,479 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:56:42,479 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:56:42,480 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_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c12eaf00463983fc4c27f56efba3b68bea09d23ae311c93edfb6c8bce7a55280 [2022-11-20 10:56:42,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:56:42,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:56:42,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:56:42,922 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:56:42,923 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:56:42,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2022-11-20 10:56:46,552 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:56:46,852 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:56:46,853 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2022-11-20 10:56:46,861 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/data/8f6096b23/792e46039653405d8a2060fdd24066c7/FLAGa3ac8ce42 [2022-11-20 10:56:46,880 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/data/8f6096b23/792e46039653405d8a2060fdd24066c7 [2022-11-20 10:56:46,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:56:46,885 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:56:46,887 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:56:46,887 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:56:46,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:56:46,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:56:46" (1/1) ... [2022-11-20 10:56:46,895 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@106cb5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:46, skipping insertion in model container [2022-11-20 10:56:46,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:56:46" (1/1) ... [2022-11-20 10:56:46,905 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:56:46,922 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:56:47,109 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_a494962f-549b-4a69-aa04-4a645891ff6e/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c[1936,1949] [2022-11-20 10:56:47,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:56:47,125 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:56:47,153 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_a494962f-549b-4a69-aa04-4a645891ff6e/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c[1936,1949] [2022-11-20 10:56:47,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:56:47,171 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:56:47,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:47 WrapperNode [2022-11-20 10:56:47,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:56:47,174 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:56:47,174 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:56:47,174 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:56:47,184 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:47" (1/1) ... [2022-11-20 10:56:47,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:47" (1/1) ... [2022-11-20 10:56:47,238 INFO L138 Inliner]: procedures = 18, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2022-11-20 10:56:47,238 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:56:47,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:56:47,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:56:47,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:56:47,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:47" (1/1) ... [2022-11-20 10:56:47,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:47" (1/1) ... [2022-11-20 10:56:47,257 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:47" (1/1) ... [2022-11-20 10:56:47,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:47" (1/1) ... [2022-11-20 10:56:47,267 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:47" (1/1) ... [2022-11-20 10:56:47,282 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:47" (1/1) ... [2022-11-20 10:56:47,285 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:47" (1/1) ... [2022-11-20 10:56:47,299 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:47" (1/1) ... [2022-11-20 10:56:47,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:56:47,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:56:47,303 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:56:47,303 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:56:47,304 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:47" (1/1) ... [2022-11-20 10:56:47,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:56:47,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:56:47,344 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:56:47,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:56:47,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:56:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 10:56:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:56:47,410 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-11-20 10:56:47,410 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-11-20 10:56:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-20 10:56:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:56:47,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:56:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 10:56:47,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:56:47,504 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:56:47,507 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:56:47,728 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:56:47,736 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:56:47,736 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 10:56:47,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:56:47 BoogieIcfgContainer [2022-11-20 10:56:47,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:56:47,743 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:56:47,743 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:56:47,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:56:47,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:56:46" (1/3) ... [2022-11-20 10:56:47,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d63f71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:56:47, skipping insertion in model container [2022-11-20 10:56:47,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:47" (2/3) ... [2022-11-20 10:56:47,749 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66d63f71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:56:47, skipping insertion in model container [2022-11-20 10:56:47,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:56:47" (3/3) ... [2022-11-20 10:56:47,751 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2022-11-20 10:56:47,776 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:56:47,777 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:56:47,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:56:47,870 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=PETRI_NET, 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;@603df77b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:56:47,871 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:56:47,876 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 25 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:56:47,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 10:56:47,887 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:47,888 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:47,889 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:47,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:47,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1619301443, now seen corresponding path program 1 times [2022-11-20 10:56:47,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:47,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662111719] [2022-11-20 10:56:47,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:47,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:48,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:48,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:56:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:48,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:48,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:48,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662111719] [2022-11-20 10:56:48,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662111719] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:48,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:48,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 10:56:48,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405614121] [2022-11-20 10:56:48,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:48,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 10:56:48,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:48,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 10:56:48,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:56:48,317 INFO L87 Difference]: Start difference. First operand has 29 states, 24 states have (on average 1.5416666666666667) internal successors, (37), 25 states have internal predecessors, (37), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:56:48,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:48,364 INFO L93 Difference]: Finished difference Result 55 states and 80 transitions. [2022-11-20 10:56:48,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 10:56:48,368 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-11-20 10:56:48,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:48,377 INFO L225 Difference]: With dead ends: 55 [2022-11-20 10:56:48,377 INFO L226 Difference]: Without dead ends: 26 [2022-11-20 10:56:48,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 10:56:48,385 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:48,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 65 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:56:48,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-20 10:56:48,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-20 10:56:48,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:56:48,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2022-11-20 10:56:48,459 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 14 [2022-11-20 10:56:48,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:48,460 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2022-11-20 10:56:48,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:56:48,460 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2022-11-20 10:56:48,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 10:56:48,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:48,462 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:48,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 10:56:48,463 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:48,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:48,464 INFO L85 PathProgramCache]: Analyzing trace with hash -406344462, now seen corresponding path program 1 times [2022-11-20 10:56:48,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:48,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899882926] [2022-11-20 10:56:48,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:48,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:48,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:48,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:56:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:48,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:48,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:48,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899882926] [2022-11-20 10:56:48,786 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899882926] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:48,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:48,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:56:48,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362981794] [2022-11-20 10:56:48,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:48,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:56:48,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:48,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:56:48,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:56:48,791 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:56:48,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:48,887 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2022-11-20 10:56:48,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:56:48,888 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-20 10:56:48,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:48,891 INFO L225 Difference]: With dead ends: 39 [2022-11-20 10:56:48,892 INFO L226 Difference]: Without dead ends: 30 [2022-11-20 10:56:48,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:56:48,895 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:48,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 106 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:56:48,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-11-20 10:56:48,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-11-20 10:56:48,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 10:56:48,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2022-11-20 10:56:48,915 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 15 [2022-11-20 10:56:48,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:48,916 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2022-11-20 10:56:48,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:56:48,919 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2022-11-20 10:56:48,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 10:56:48,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:48,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:48,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 10:56:48,924 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:48,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:48,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1317392998, now seen corresponding path program 1 times [2022-11-20 10:56:48,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:48,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346247183] [2022-11-20 10:56:48,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:48,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:49,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:56:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:49,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:49,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:49,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346247183] [2022-11-20 10:56:49,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346247183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:49,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:49,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:56:49,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570157603] [2022-11-20 10:56:49,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:49,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:56:49,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:49,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:56:49,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:56:49,194 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:56:49,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:49,257 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2022-11-20 10:56:49,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:56:49,258 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-20 10:56:49,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:49,259 INFO L225 Difference]: With dead ends: 43 [2022-11-20 10:56:49,259 INFO L226 Difference]: Without dead ends: 34 [2022-11-20 10:56:49,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:56:49,261 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:49,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 122 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:56:49,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-20 10:56:49,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2022-11-20 10:56:49,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 10:56:49,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2022-11-20 10:56:49,271 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 16 [2022-11-20 10:56:49,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:49,271 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2022-11-20 10:56:49,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:56:49,272 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2022-11-20 10:56:49,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 10:56:49,273 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:49,273 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:49,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 10:56:49,273 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:49,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:49,274 INFO L85 PathProgramCache]: Analyzing trace with hash 278796150, now seen corresponding path program 1 times [2022-11-20 10:56:49,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:49,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863913674] [2022-11-20 10:56:49,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:49,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:49,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:49,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:56:49,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:49,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:49,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:49,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863913674] [2022-11-20 10:56:49,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863913674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:49,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:49,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:56:49,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623268753] [2022-11-20 10:56:49,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:49,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:56:49,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:49,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:56:49,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:56:49,431 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:56:49,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:49,496 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2022-11-20 10:56:49,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:56:49,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-11-20 10:56:49,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:49,498 INFO L225 Difference]: With dead ends: 43 [2022-11-20 10:56:49,498 INFO L226 Difference]: Without dead ends: 34 [2022-11-20 10:56:49,499 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:56:49,501 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:49,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 122 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:56:49,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-20 10:56:49,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2022-11-20 10:56:49,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 10:56:49,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2022-11-20 10:56:49,508 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 17 [2022-11-20 10:56:49,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:49,508 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2022-11-20 10:56:49,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:56:49,509 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2022-11-20 10:56:49,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 10:56:49,510 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:49,510 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:49,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 10:56:49,511 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:49,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:49,511 INFO L85 PathProgramCache]: Analyzing trace with hash -492818326, now seen corresponding path program 1 times [2022-11-20 10:56:49,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:49,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709801943] [2022-11-20 10:56:49,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:49,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:49,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 10:56:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:49,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:49,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 10:56:49,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709801943] [2022-11-20 10:56:49,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709801943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:49,660 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:49,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:56:49,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081595643] [2022-11-20 10:56:49,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:49,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:56:49,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 10:56:49,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:56:49,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:56:49,665 INFO L87 Difference]: Start difference. First operand 30 states and 38 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:56:49,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:49,710 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2022-11-20 10:56:49,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 10:56:49,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-20 10:56:49,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:49,712 INFO L225 Difference]: With dead ends: 43 [2022-11-20 10:56:49,712 INFO L226 Difference]: Without dead ends: 34 [2022-11-20 10:56:49,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:56:49,714 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 1 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:49,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 122 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:56:49,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-11-20 10:56:49,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2022-11-20 10:56:49,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.28) internal successors, (32), 25 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 10:56:49,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 38 transitions. [2022-11-20 10:56:49,722 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 38 transitions. Word has length 18 [2022-11-20 10:56:49,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:49,723 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 38 transitions. [2022-11-20 10:56:49,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:56:49,724 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 38 transitions. [2022-11-20 10:56:49,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 10:56:49,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:49,725 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:49,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 10:56:49,725 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:49,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:49,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1994694507, now seen corresponding path program 1 times [2022-11-20 10:56:49,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 10:56:49,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344532017] [2022-11-20 10:56:49,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:49,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 10:56:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:56:49,744 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:56:49,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:56:49,790 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 10:56:49,791 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:56:49,792 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 10:56:49,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 10:56:49,799 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-20 10:56:49,804 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 10:56:49,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:56:49 BoogieIcfgContainer [2022-11-20 10:56:49,862 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:56:49,863 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:56:49,863 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:56:49,863 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:56:49,864 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:56:47" (3/4) ... [2022-11-20 10:56:49,868 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 10:56:49,868 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:56:49,869 INFO L158 Benchmark]: Toolchain (without parser) took 2984.05ms. Allocated memory is still 161.5MB. Free memory was 130.4MB in the beginning and 83.5MB in the end (delta: 46.8MB). Peak memory consumption was 47.4MB. Max. memory is 16.1GB. [2022-11-20 10:56:49,869 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 127.9MB. Free memory was 91.9MB in the beginning and 91.9MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:56:49,870 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.75ms. Allocated memory is still 161.5MB. Free memory was 130.4MB in the beginning and 119.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 10:56:49,873 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.99ms. Allocated memory is still 161.5MB. Free memory was 119.9MB in the beginning and 117.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:56:49,873 INFO L158 Benchmark]: Boogie Preprocessor took 62.29ms. Allocated memory is still 161.5MB. Free memory was 117.8MB in the beginning and 116.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:56:49,874 INFO L158 Benchmark]: RCFGBuilder took 437.08ms. Allocated memory is still 161.5MB. Free memory was 116.5MB in the beginning and 103.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 10:56:49,874 INFO L158 Benchmark]: TraceAbstraction took 2119.42ms. Allocated memory is still 161.5MB. Free memory was 103.1MB in the beginning and 84.6MB in the end (delta: 18.5MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. [2022-11-20 10:56:49,875 INFO L158 Benchmark]: Witness Printer took 5.58ms. Allocated memory is still 161.5MB. Free memory was 84.6MB in the beginning and 83.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:56:49,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 127.9MB. Free memory was 91.9MB in the beginning and 91.9MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 285.75ms. Allocated memory is still 161.5MB. Free memory was 130.4MB in the beginning and 119.9MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.99ms. Allocated memory is still 161.5MB. Free memory was 119.9MB in the beginning and 117.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 62.29ms. Allocated memory is still 161.5MB. Free memory was 117.8MB in the beginning and 116.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 437.08ms. Allocated memory is still 161.5MB. Free memory was 116.5MB in the beginning and 103.9MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2119.42ms. Allocated memory is still 161.5MB. Free memory was 103.1MB in the beginning and 84.6MB in the end (delta: 18.5MB). Peak memory consumption was 18.0MB. Max. memory is 16.1GB. * Witness Printer took 5.58ms. Allocated memory is still 161.5MB. Free memory was 84.6MB in the beginning and 83.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 81]: 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 80, overapproximation of someUnaryFLOAToperation at line 76. Possible FailurePath: [L75] float x = 0.0f; [L76] float y = -0.0f; [L77] CALL, EXPR fmax_float(x, y) [L46] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L23] __uint32_t w; VAL [\old(x)=0, x=0] [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=0, w=4286578689, x=0] [L33-L34] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L36-L37] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=0, w=4286578689, x=0] [L39] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L42] return 0; VAL [\old(x)=0, \result=0, w=4286578689, x=0] [L46] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=4286578696, __fpclassify_float(x)=0, x=0, y=4286578696] [L46] COND TRUE __fpclassify_float(x) == 0 [L47] return y; VAL [\old(x)=0, \old(y)=4286578696, \result=4286578696, x=0, y=4286578696] [L77] RET, EXPR fmax_float(x, y) [L77] float res = fmax_float(x, y); [L80] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=4286578696, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=4286578696] [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L81] reach_error() VAL [res=4286578696, x=0, y=4286578696] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 537 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 367 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 95 IncrementalHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 170 mSDtfsCounter, 95 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=2, InterpolantAutomatonStates: 23, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 12 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 75 ConstructedInterpolants, 0 QuantifiedInterpolants, 191 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 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 [2022-11-20 10:56:49,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c12eaf00463983fc4c27f56efba3b68bea09d23ae311c93edfb6c8bce7a55280 --- 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-6b4ec56 [2022-11-20 10:56:52,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 10:56:52,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 10:56:52,936 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 10:56:52,937 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 10:56:52,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 10:56:52,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 10:56:52,952 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 10:56:52,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 10:56:52,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 10:56:52,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 10:56:52,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 10:56:52,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 10:56:52,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 10:56:52,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 10:56:52,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 10:56:52,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 10:56:52,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 10:56:52,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 10:56:52,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 10:56:52,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 10:56:52,992 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 10:56:52,994 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 10:56:52,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 10:56:53,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 10:56:53,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 10:56:53,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 10:56:53,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 10:56:53,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 10:56:53,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 10:56:53,010 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 10:56:53,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 10:56:53,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 10:56:53,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 10:56:53,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 10:56:53,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 10:56:53,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 10:56:53,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 10:56:53,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 10:56:53,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 10:56:53,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 10:56:53,053 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-20 10:56:53,105 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 10:56:53,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 10:56:53,106 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 10:56:53,106 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 10:56:53,107 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 10:56:53,107 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 10:56:53,108 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 10:56:53,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 10:56:53,109 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 10:56:53,109 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 10:56:53,109 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 10:56:53,112 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 10:56:53,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 10:56:53,113 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 10:56:53,113 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 10:56:53,113 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 10:56:53,114 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 10:56:53,114 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 10:56:53,114 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 10:56:53,114 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 10:56:53,115 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 10:56:53,115 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 10:56:53,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 10:56:53,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 10:56:53,116 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 10:56:53,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 10:56:53,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:56:53,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 10:56:53,118 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 10:56:53,118 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 10:56:53,118 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 10:56:53,118 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 10:56:53,119 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 10:56:53,119 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 10:56:53,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 10:56:53,119 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 10:56:53,121 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_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c12eaf00463983fc4c27f56efba3b68bea09d23ae311c93edfb6c8bce7a55280 [2022-11-20 10:56:53,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 10:56:53,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 10:56:53,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 10:56:53,660 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 10:56:53,661 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 10:56:53,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2022-11-20 10:56:57,585 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 10:56:57,809 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 10:56:57,810 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c [2022-11-20 10:56:57,818 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/data/56e075ddb/aefaab9a9464493e8b563f3621e5c124/FLAG1df14f755 [2022-11-20 10:56:57,836 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/data/56e075ddb/aefaab9a9464493e8b563f3621e5c124 [2022-11-20 10:56:57,839 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 10:56:57,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 10:56:57,846 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 10:56:57,846 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 10:56:57,853 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 10:56:57,854 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:56:57" (1/1) ... [2022-11-20 10:56:57,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61463251 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:57, skipping insertion in model container [2022-11-20 10:56:57,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:56:57" (1/1) ... [2022-11-20 10:56:57,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 10:56:57,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 10:56:58,092 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_a494962f-549b-4a69-aa04-4a645891ff6e/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c[1936,1949] [2022-11-20 10:56:58,097 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:56:58,139 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 10:56:58,188 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_a494962f-549b-4a69-aa04-4a645891ff6e/sv-benchmarks/c/float-newlib/float_req_bl_1252b.c[1936,1949] [2022-11-20 10:56:58,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 10:56:58,228 INFO L208 MainTranslator]: Completed translation [2022-11-20 10:56:58,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:58 WrapperNode [2022-11-20 10:56:58,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 10:56:58,232 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 10:56:58,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 10:56:58,233 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 10:56:58,242 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:58" (1/1) ... [2022-11-20 10:56:58,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:58" (1/1) ... [2022-11-20 10:56:58,313 INFO L138 Inliner]: procedures = 21, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2022-11-20 10:56:58,313 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 10:56:58,315 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 10:56:58,315 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 10:56:58,316 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 10:56:58,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:58" (1/1) ... [2022-11-20 10:56:58,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:58" (1/1) ... [2022-11-20 10:56:58,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:58" (1/1) ... [2022-11-20 10:56:58,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:58" (1/1) ... [2022-11-20 10:56:58,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:58" (1/1) ... [2022-11-20 10:56:58,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:58" (1/1) ... [2022-11-20 10:56:58,387 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:58" (1/1) ... [2022-11-20 10:56:58,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:58" (1/1) ... [2022-11-20 10:56:58,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 10:56:58,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 10:56:58,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 10:56:58,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 10:56:58,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:58" (1/1) ... [2022-11-20 10:56:58,418 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 10:56:58,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 10:56:58,456 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 10:56:58,474 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 10:56:58,519 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 10:56:58,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 10:56:58,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 10:56:58,521 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-11-20 10:56:58,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-11-20 10:56:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 10:56:58,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 10:56:58,524 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 10:56:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-11-20 10:56:58,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 10:56:58,660 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 10:56:58,662 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 10:56:58,935 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 10:56:58,942 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 10:56:58,942 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-20 10:56:58,945 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:56:58 BoogieIcfgContainer [2022-11-20 10:56:58,945 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 10:56:58,947 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 10:56:58,947 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 10:56:58,952 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 10:56:58,952 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:56:57" (1/3) ... [2022-11-20 10:56:58,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326a8208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:56:58, skipping insertion in model container [2022-11-20 10:56:58,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:56:58" (2/3) ... [2022-11-20 10:56:58,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@326a8208 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:56:58, skipping insertion in model container [2022-11-20 10:56:58,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:56:58" (3/3) ... [2022-11-20 10:56:58,956 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2022-11-20 10:56:59,002 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 10:56:59,003 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 10:56:59,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 10:56:59,081 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=PETRI_NET, 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;@685956b4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 10:56:59,082 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 10:56:59,087 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:56:59,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-20 10:56:59,096 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:59,097 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:59,098 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:59,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:59,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1229941712, now seen corresponding path program 1 times [2022-11-20 10:56:59,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:56:59,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060062863] [2022-11-20 10:56:59,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:59,120 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:56:59,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:56:59,126 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:56:59,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-20 10:56:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:59,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 10:56:59,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:56:59,371 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:59,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:56:59,372 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:56:59,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060062863] [2022-11-20 10:56:59,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060062863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:59,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:59,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 10:56:59,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156120508] [2022-11-20 10:56:59,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:59,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 10:56:59,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:56:59,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 10:56:59,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:56:59,425 INFO L87 Difference]: Start difference. First operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:56:59,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:56:59,450 INFO L93 Difference]: Finished difference Result 51 states and 76 transitions. [2022-11-20 10:56:59,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 10:56:59,453 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-20 10:56:59,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:56:59,462 INFO L225 Difference]: With dead ends: 51 [2022-11-20 10:56:59,463 INFO L226 Difference]: Without dead ends: 24 [2022-11-20 10:56:59,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 10:56:59,471 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:56:59,472 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:56:59,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-20 10:56:59,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-20 10:56:59,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:56:59,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2022-11-20 10:56:59,517 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 13 [2022-11-20 10:56:59,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:56:59,518 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-11-20 10:56:59,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:56:59,518 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2022-11-20 10:56:59,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 10:56:59,520 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:56:59,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:56:59,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-20 10:56:59,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:56:59,731 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:56:59,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:56:59,732 INFO L85 PathProgramCache]: Analyzing trace with hash -2003061117, now seen corresponding path program 1 times [2022-11-20 10:56:59,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:56:59,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935151679] [2022-11-20 10:56:59,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:56:59,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:56:59,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:56:59,735 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:56:59,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-20 10:56:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:56:59,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:56:59,861 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:56:59,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:56:59,915 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:56:59,916 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:56:59,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935151679] [2022-11-20 10:56:59,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935151679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:56:59,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:56:59,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:56:59,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748741083] [2022-11-20 10:56:59,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:56:59,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:56:59,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:56:59,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:56:59,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:56:59,921 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:57:00,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:00,063 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2022-11-20 10:57:00,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:57:00,065 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-11-20 10:57:00,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:00,067 INFO L225 Difference]: With dead ends: 36 [2022-11-20 10:57:00,068 INFO L226 Difference]: Without dead ends: 27 [2022-11-20 10:57:00,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:57:00,070 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:00,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 10:57:00,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-20 10:57:00,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-20 10:57:00,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 10:57:00,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2022-11-20 10:57:00,081 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 14 [2022-11-20 10:57:00,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:00,081 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2022-11-20 10:57:00,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:57:00,082 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2022-11-20 10:57:00,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 10:57:00,083 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:00,083 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:00,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:00,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:57:00,299 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:00,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:00,300 INFO L85 PathProgramCache]: Analyzing trace with hash 579011981, now seen corresponding path program 1 times [2022-11-20 10:57:00,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:57:00,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458445507] [2022-11-20 10:57:00,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:00,302 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:57:00,302 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:57:00,303 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:57:00,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-20 10:57:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:00,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:57:00,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:00,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:00,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:57:00,662 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:57:00,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458445507] [2022-11-20 10:57:00,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [458445507] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:00,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:00,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:57:00,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350430686] [2022-11-20 10:57:00,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:00,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:57:00,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:57:00,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:57:00,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:57:00,666 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:57:00,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:00,816 INFO L93 Difference]: Finished difference Result 62 states and 78 transitions. [2022-11-20 10:57:00,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:57:00,818 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-20 10:57:00,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:00,819 INFO L225 Difference]: With dead ends: 62 [2022-11-20 10:57:00,819 INFO L226 Difference]: Without dead ends: 39 [2022-11-20 10:57:00,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:57:00,822 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 21 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:00,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 93 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 12 Unchecked, 0.1s Time] [2022-11-20 10:57:00,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2022-11-20 10:57:00,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 29. [2022-11-20 10:57:00,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-20 10:57:00,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2022-11-20 10:57:00,836 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 15 [2022-11-20 10:57:00,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:00,838 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2022-11-20 10:57:00,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:57:00,840 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2022-11-20 10:57:00,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 10:57:00,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:00,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:00,869 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:01,068 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:57:01,069 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:01,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:01,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1695173439, now seen corresponding path program 1 times [2022-11-20 10:57:01,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:57:01,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676351085] [2022-11-20 10:57:01,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:01,072 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:57:01,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:57:01,074 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:57:01,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-20 10:57:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:01,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:57:01,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:01,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 10:57:01,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:57:01,347 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:57:01,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676351085] [2022-11-20 10:57:01,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676351085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:01,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:01,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:57:01,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260375104] [2022-11-20 10:57:01,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:01,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:57:01,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:57:01,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:57:01,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:57:01,351 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:57:01,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:01,500 INFO L93 Difference]: Finished difference Result 53 states and 66 transitions. [2022-11-20 10:57:01,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:57:01,502 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-11-20 10:57:01,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:01,503 INFO L225 Difference]: With dead ends: 53 [2022-11-20 10:57:01,503 INFO L226 Difference]: Without dead ends: 28 [2022-11-20 10:57:01,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:57:01,506 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 23 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:01,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 78 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 18 Unchecked, 0.1s Time] [2022-11-20 10:57:01,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-11-20 10:57:01,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2022-11-20 10:57:01,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 22 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:57:01,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-11-20 10:57:01,514 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 16 [2022-11-20 10:57:01,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:01,515 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-11-20 10:57:01,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-20 10:57:01,515 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-11-20 10:57:01,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 10:57:01,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:01,517 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:01,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:01,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:57:01,730 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:01,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:01,731 INFO L85 PathProgramCache]: Analyzing trace with hash 800680882, now seen corresponding path program 1 times [2022-11-20 10:57:01,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:57:01,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187078072] [2022-11-20 10:57:01,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:01,733 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:57:01,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:57:01,734 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:57:01,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-20 10:57:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:01,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 10:57:01,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:01,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-20 10:57:01,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:57:01,901 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:57:01,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187078072] [2022-11-20 10:57:01,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187078072] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:01,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:01,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 10:57:01,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752824592] [2022-11-20 10:57:01,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:01,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 10:57:01,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:57:01,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 10:57:01,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:57:01,905 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 10:57:01,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:01,950 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2022-11-20 10:57:01,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 10:57:01,951 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-20 10:57:01,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:01,956 INFO L225 Difference]: With dead ends: 36 [2022-11-20 10:57:01,956 INFO L226 Difference]: Without dead ends: 27 [2022-11-20 10:57:01,961 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 10:57:01,965 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:01,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:57:01,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-20 10:57:01,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-20 10:57:01,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:57:01,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2022-11-20 10:57:01,972 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 22 [2022-11-20 10:57:01,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:01,972 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2022-11-20 10:57:01,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 10:57:01,973 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2022-11-20 10:57:01,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-20 10:57:01,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:01,980 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:02,005 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:02,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:57:02,194 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:02,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:02,195 INFO L85 PathProgramCache]: Analyzing trace with hash 802527924, now seen corresponding path program 1 times [2022-11-20 10:57:02,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:57:02,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455913667] [2022-11-20 10:57:02,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:02,196 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:57:02,196 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:57:02,198 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:57:02,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-20 10:57:02,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:02,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 10:57:02,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:02,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 10:57:02,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:57:02,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:57:02,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455913667] [2022-11-20 10:57:02,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455913667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:02,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:02,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 10:57:02,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868652246] [2022-11-20 10:57:02,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:02,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 10:57:02,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:57:02,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 10:57:02,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 10:57:02,428 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 10:57:02,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:02,541 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-20 10:57:02,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 10:57:02,542 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-20 10:57:02,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:02,543 INFO L225 Difference]: With dead ends: 39 [2022-11-20 10:57:02,543 INFO L226 Difference]: Without dead ends: 36 [2022-11-20 10:57:02,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:57:02,545 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 34 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:02,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 80 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 10:57:02,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-20 10:57:02,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2022-11-20 10:57:02,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:57:02,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-11-20 10:57:02,561 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 22 [2022-11-20 10:57:02,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:02,561 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-11-20 10:57:02,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 10:57:02,562 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-11-20 10:57:02,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 10:57:02,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:02,565 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:02,586 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-11-20 10:57:02,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:57:02,779 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:02,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:02,779 INFO L85 PathProgramCache]: Analyzing trace with hash -288314810, now seen corresponding path program 1 times [2022-11-20 10:57:02,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:57:02,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2059863156] [2022-11-20 10:57:02,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:02,780 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:57:02,780 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:57:02,782 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:57:02,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-20 10:57:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:02,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:57:02,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:03,058 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:57:03,059 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:57:03,059 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:57:03,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2059863156] [2022-11-20 10:57:03,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2059863156] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:03,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:03,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:57:03,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491246333] [2022-11-20 10:57:03,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:03,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:57:03,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:57:03,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:57:03,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:57:03,064 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 10:57:03,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:03,208 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2022-11-20 10:57:03,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:57:03,213 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-11-20 10:57:03,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:03,214 INFO L225 Difference]: With dead ends: 43 [2022-11-20 10:57:03,215 INFO L226 Difference]: Without dead ends: 29 [2022-11-20 10:57:03,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:57:03,216 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 19 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 10 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:03,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 84 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 10 Unchecked, 0.1s Time] [2022-11-20 10:57:03,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-20 10:57:03,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-20 10:57:03,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 24 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-20 10:57:03,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2022-11-20 10:57:03,227 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 23 [2022-11-20 10:57:03,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:03,228 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2022-11-20 10:57:03,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 10:57:03,228 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2022-11-20 10:57:03,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 10:57:03,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:03,229 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:03,249 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:03,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:57:03,430 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:03,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:03,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1306136146, now seen corresponding path program 1 times [2022-11-20 10:57:03,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:57:03,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1915416400] [2022-11-20 10:57:03,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:03,432 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:57:03,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:57:03,433 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:57:03,437 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-20 10:57:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 10:57:03,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 10:57:03,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 10:57:03,646 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 10:57:03,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 10:57:03,646 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 10:57:03,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1915416400] [2022-11-20 10:57:03,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1915416400] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 10:57:03,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 10:57:03,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 10:57:03,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883468528] [2022-11-20 10:57:03,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 10:57:03,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 10:57:03,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 10:57:03,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 10:57:03,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 10:57:03,650 INFO L87 Difference]: Start difference. First operand 29 states and 34 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 10:57:03,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 10:57:03,764 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2022-11-20 10:57:03,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 10:57:03,765 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2022-11-20 10:57:03,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 10:57:03,766 INFO L225 Difference]: With dead ends: 38 [2022-11-20 10:57:03,766 INFO L226 Difference]: Without dead ends: 21 [2022-11-20 10:57:03,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-20 10:57:03,767 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 20 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 10:57:03,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 72 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 13 Unchecked, 0.1s Time] [2022-11-20 10:57:03,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-20 10:57:03,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-20 10:57:03,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 10:57:03,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-11-20 10:57:03,772 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 24 [2022-11-20 10:57:03,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 10:57:03,773 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-11-20 10:57:03,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-20 10:57:03,773 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-11-20 10:57:03,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 10:57:03,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 10:57:03,774 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:03,799 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -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)] Ended with exit code 0 [2022-11-20 10:57:03,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:57:03,994 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 10:57:03,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 10:57:03,995 INFO L85 PathProgramCache]: Analyzing trace with hash 543069769, now seen corresponding path program 1 times [2022-11-20 10:57:03,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 10:57:03,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523385455] [2022-11-20 10:57:03,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 10:57:03,996 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:57:03,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 10:57:03,997 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-20 10:57:03,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-20 10:57:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:57:04,124 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 10:57:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 10:57:04,243 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-11-20 10:57:04,243 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 10:57:04,245 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 10:57:04,267 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-20 10:57:04,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 10:57:04,465 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 10:57:04,469 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 10:57:04,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:57:04 BoogieIcfgContainer [2022-11-20 10:57:04,523 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 10:57:04,524 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 10:57:04,524 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 10:57:04,524 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 10:57:04,525 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:56:58" (3/4) ... [2022-11-20 10:57:04,530 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-11-20 10:57:04,612 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 10:57:04,612 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 10:57:04,614 INFO L158 Benchmark]: Toolchain (without parser) took 6772.24ms. Allocated memory was 79.7MB in the beginning and 107.0MB in the end (delta: 27.3MB). Free memory was 40.7MB in the beginning and 79.8MB in the end (delta: -39.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:57:04,614 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 79.7MB. Free memory is still 57.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:57:04,615 INFO L158 Benchmark]: CACSL2BoogieTranslator took 384.15ms. Allocated memory is still 79.7MB. Free memory was 40.5MB in the beginning and 59.2MB in the end (delta: -18.7MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. [2022-11-20 10:57:04,615 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.02ms. Allocated memory is still 79.7MB. Free memory was 59.2MB in the beginning and 57.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 10:57:04,616 INFO L158 Benchmark]: Boogie Preprocessor took 91.89ms. Allocated memory is still 79.7MB. Free memory was 57.5MB in the beginning and 56.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:57:04,616 INFO L158 Benchmark]: RCFGBuilder took 537.10ms. Allocated memory is still 79.7MB. Free memory was 55.8MB in the beginning and 42.9MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 10:57:04,617 INFO L158 Benchmark]: TraceAbstraction took 5576.21ms. Allocated memory was 79.7MB in the beginning and 107.0MB in the end (delta: 27.3MB). Free memory was 42.1MB in the beginning and 81.9MB in the end (delta: -39.8MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. [2022-11-20 10:57:04,617 INFO L158 Benchmark]: Witness Printer took 88.51ms. Allocated memory is still 107.0MB. Free memory was 81.9MB in the beginning and 79.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 10:57:04,623 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 79.7MB. Free memory is still 57.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 384.15ms. Allocated memory is still 79.7MB. Free memory was 40.5MB in the beginning and 59.2MB in the end (delta: -18.7MB). Peak memory consumption was 14.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.02ms. Allocated memory is still 79.7MB. Free memory was 59.2MB in the beginning and 57.5MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 91.89ms. Allocated memory is still 79.7MB. Free memory was 57.5MB in the beginning and 56.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 537.10ms. Allocated memory is still 79.7MB. Free memory was 55.8MB in the beginning and 42.9MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5576.21ms. Allocated memory was 79.7MB in the beginning and 107.0MB in the end (delta: 27.3MB). Free memory was 42.1MB in the beginning and 81.9MB in the end (delta: -39.8MB). Peak memory consumption was 32.3MB. Max. memory is 16.1GB. * Witness Printer took 88.51ms. Allocated memory is still 107.0MB. Free memory was 81.9MB in the beginning and 79.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 81]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L75] float x = 0.0f; [L76] float y = -0.0f; [L77] CALL, EXPR fmax_float(x, y) [L46] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0.0] [L23] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND TRUE w == 0x00000000 || w == 0x80000000 [L32] return 2; VAL [\old(x)=0.0, \result=2, w=0, x=0.0] [L46] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(x)=2, x=0.0, y=0.0] [L46] COND FALSE !(__fpclassify_float(x) == 0) [L50] CALL, EXPR __fpclassify_float(y) VAL [\old(x)=0.0] [L23] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND TRUE w == 0x00000000 || w == 0x80000000 [L32] return 2; VAL [\old(x)=0.0, \result=2, w=2147483648, x=0.0] [L50] RET, EXPR __fpclassify_float(y) VAL [\old(x)=0.0, \old(y)=0.0, __fpclassify_float(y)=2, x=0.0, y=0.0] [L50] COND FALSE !(__fpclassify_float(y) == 0) [L53] return x > y ? x : y; VAL [\old(x)=0.0, \old(y)=0.0, \result=0.0, x=0.0, y=0.0] [L77] RET, EXPR fmax_float(x, y) [L77] float res = fmax_float(x, y); [L80] EXPR res == 0.0f && __signbit_float(res) == 0 [L80] CALL, EXPR __signbit_float(res) [L57] __uint32_t w; VAL [\old(x)=0.0, x=0.0] [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (w) = gf_u.word [L65] return (w & 0x80000000) != 0; VAL [\old(x)=0.0, \result=1, w=2147483648, x=0.0] [L80] RET, EXPR __signbit_float(res) [L80] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [__signbit_float(res)=1, res=0.0, res == 0.0f && __signbit_float(res) == 0=0, x=0.0, y=0.0] [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L81] reach_error() VAL [res=0.0, x=0.0, y=0.0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.4s, OverallIterations: 9, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 127 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 117 mSDsluCounter, 600 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 53 IncrementalHoareTripleChecker+Unchecked, 392 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 142 IncrementalHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 208 mSDtfsCounter, 142 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=3, InterpolantAutomatonStates: 44, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 19 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 175 NumberOfCodeBlocks, 175 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 141 ConstructedInterpolants, 14 QuantifiedInterpolants, 474 SizeOfPredicates, 32 NumberOfNonLiveVariables, 528 ConjunctsInSsa, 61 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 24/24 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 proved your program to be incorrect! [2022-11-20 10:57:04,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a494962f-549b-4a69-aa04-4a645891ff6e/bin/uautomizer-ug76WZFUDN/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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE