./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1251b.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_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 0ddb7cbdb5243e0dc5a18ffa5957d423189625fe9ffc6441855806502cce15ab --- 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 12:03:15,647 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:03:15,650 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:03:15,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:03:15,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:03:15,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:03:15,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:03:15,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:03:15,719 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:03:15,727 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:03:15,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:03:15,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:03:15,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:03:15,738 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:03:15,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:03:15,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:03:15,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:03:15,750 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:03:15,752 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:03:15,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:03:15,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:03:15,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:03:15,770 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:03:15,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:03:15,785 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:03:15,786 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:03:15,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:03:15,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:03:15,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:03:15,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:03:15,792 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:03:15,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:03:15,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:03:15,800 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:03:15,801 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:03:15,802 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:03:15,803 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:03:15,803 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:03:15,803 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:03:15,805 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:03:15,807 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:03:15,808 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 12:03:15,861 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:03:15,862 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:03:15,863 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:03:15,863 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:03:15,864 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:03:15,864 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:03:15,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:03:15,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:03:15,866 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:03:15,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:03:15,868 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:03:15,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:03:15,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:03:15,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:03:15,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:03:15,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:03:15,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:03:15,870 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:03:15,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:03:15,870 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:03:15,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:03:15,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:03:15,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:03:15,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:03:15,872 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:03:15,872 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:03:15,872 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:03:15,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:03:15,874 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:03:15,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:03:15,874 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:03:15,874 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:03:15,875 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:03:15,875 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_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ddb7cbdb5243e0dc5a18ffa5957d423189625fe9ffc6441855806502cce15ab [2022-11-20 12:03:16,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:03:16,317 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:03:16,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:03:16,321 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:03:16,322 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:03:16,323 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c [2022-11-20 12:03:19,974 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:03:20,319 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:03:20,320 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/sv-benchmarks/c/float-newlib/double_req_bl_1251b.c [2022-11-20 12:03:20,329 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/data/b1cdc9124/087dc5f92e4d42de871a14762fd7d524/FLAG0a4bf23dc [2022-11-20 12:03:20,348 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/data/b1cdc9124/087dc5f92e4d42de871a14762fd7d524 [2022-11-20 12:03:20,351 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:03:20,353 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:03:20,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:03:20,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:03:20,360 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:03:20,361 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:03:20" (1/1) ... [2022-11-20 12:03:20,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71ff3a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:20, skipping insertion in model container [2022-11-20 12:03:20,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:03:20" (1/1) ... [2022-11-20 12:03:20,373 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:03:20,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:03:20,607 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_040ccf68-8ce5-4ba9-a724-4e6b09032d86/sv-benchmarks/c/float-newlib/double_req_bl_1251b.c[2080,2093] [2022-11-20 12:03:20,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:03:20,625 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:03:20,654 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_040ccf68-8ce5-4ba9-a724-4e6b09032d86/sv-benchmarks/c/float-newlib/double_req_bl_1251b.c[2080,2093] [2022-11-20 12:03:20,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:03:20,674 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:03:20,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:20 WrapperNode [2022-11-20 12:03:20,675 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:03:20,677 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:03:20,677 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:03:20,677 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:03:20,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:20" (1/1) ... [2022-11-20 12:03:20,702 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:20" (1/1) ... [2022-11-20 12:03:20,726 INFO L138 Inliner]: procedures = 18, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 48 [2022-11-20 12:03:20,727 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:03:20,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:03:20,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:03:20,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:03:20,741 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:20" (1/1) ... [2022-11-20 12:03:20,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:20" (1/1) ... [2022-11-20 12:03:20,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:20" (1/1) ... [2022-11-20 12:03:20,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:20" (1/1) ... [2022-11-20 12:03:20,752 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:20" (1/1) ... [2022-11-20 12:03:20,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:20" (1/1) ... [2022-11-20 12:03:20,759 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:20" (1/1) ... [2022-11-20 12:03:20,760 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:20" (1/1) ... [2022-11-20 12:03:20,763 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:03:20,764 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:03:20,765 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:03:20,765 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:03:20,766 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:20" (1/1) ... [2022-11-20 12:03:20,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:03:20,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:03:20,805 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:03:20,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:03:20,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:03:20,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:03:20,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:03:20,870 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2022-11-20 12:03:20,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2022-11-20 12:03:20,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-20 12:03:20,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:03:20,874 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:03:20,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:03:20,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:03:21,019 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:03:21,021 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:03:21,345 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:03:21,352 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:03:21,352 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 12:03:21,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:03:21 BoogieIcfgContainer [2022-11-20 12:03:21,355 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:03:21,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:03:21,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:03:21,377 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:03:21,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:03:20" (1/3) ... [2022-11-20 12:03:21,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43560173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:03:21, skipping insertion in model container [2022-11-20 12:03:21,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:20" (2/3) ... [2022-11-20 12:03:21,378 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43560173 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:03:21, skipping insertion in model container [2022-11-20 12:03:21,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:03:21" (3/3) ... [2022-11-20 12:03:21,380 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2022-11-20 12:03:21,407 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:03:21,408 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:03:21,528 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:03:21,542 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;@1d276a3d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:03:21,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:03:21,548 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 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 12:03:21,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 12:03:21,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:03:21,567 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:03:21,568 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:03:21,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:21,577 INFO L85 PathProgramCache]: Analyzing trace with hash -419185147, now seen corresponding path program 1 times [2022-11-20 12:03:21,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:21,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304743954] [2022-11-20 12:03:21,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:21,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:21,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:03:21,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:21,846 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 12:03:21,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:03:21,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304743954] [2022-11-20 12:03:21,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304743954] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:21,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:21,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-20 12:03:21,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526313148] [2022-11-20 12:03:21,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:21,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 12:03:21,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:03:21,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 12:03:21,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 12:03:21,908 INFO L87 Difference]: Start difference. First operand has 27 states, 22 states have (on average 1.5) internal successors, (33), 23 states have internal predecessors, (33), 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 4.333333333333333) internal successors, (13), 2 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 12:03:21,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:03:21,956 INFO L93 Difference]: Finished difference Result 49 states and 69 transitions. [2022-11-20 12:03:21,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 12:03:21,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 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 12:03:21,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:03:21,969 INFO L225 Difference]: With dead ends: 49 [2022-11-20 12:03:21,970 INFO L226 Difference]: Without dead ends: 23 [2022-11-20 12:03:21,974 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 12:03:21,978 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:03:21,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 62 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:03:22,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-20 12:03:22,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-20 12:03:22,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 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 12:03:22,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 29 transitions. [2022-11-20 12:03:22,027 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 29 transitions. Word has length 15 [2022-11-20 12:03:22,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:03:22,028 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 29 transitions. [2022-11-20 12:03:22,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 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 12:03:22,029 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 29 transitions. [2022-11-20 12:03:22,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 12:03:22,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:03:22,031 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:03:22,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 12:03:22,032 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:03:22,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:22,033 INFO L85 PathProgramCache]: Analyzing trace with hash 2118859842, now seen corresponding path program 1 times [2022-11-20 12:03:22,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:22,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236022457] [2022-11-20 12:03:22,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:22,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:22,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:03:22,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:22,375 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 12:03:22,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:03:22,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236022457] [2022-11-20 12:03:22,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236022457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:22,377 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:22,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:03:22,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957759668] [2022-11-20 12:03:22,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:22,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:03:22,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:03:22,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:03:22,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:03:22,381 INFO L87 Difference]: Start difference. First operand 23 states and 29 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 12:03:22,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:03:22,494 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2022-11-20 12:03:22,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:03:22,496 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 12:03:22,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:03:22,498 INFO L225 Difference]: With dead ends: 31 [2022-11-20 12:03:22,499 INFO L226 Difference]: Without dead ends: 27 [2022-11-20 12:03:22,499 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 12:03:22,501 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 1 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:03:22,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 91 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:03:22,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-20 12:03:22,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-20 12:03:22,510 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, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:03:22,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2022-11-20 12:03:22,539 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 16 [2022-11-20 12:03:22,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:03:22,540 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2022-11-20 12:03:22,542 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 12:03:22,542 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2022-11-20 12:03:22,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 12:03:22,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:03:22,552 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 12:03:22,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 12:03:22,553 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:03:22,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:22,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1080178430, now seen corresponding path program 1 times [2022-11-20 12:03:22,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:22,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875756254] [2022-11-20 12:03:22,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:22,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:22,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:03:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:22,863 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 12:03:22,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:03:22,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875756254] [2022-11-20 12:03:22,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875756254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:22,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:22,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:03:22,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086554824] [2022-11-20 12:03:22,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:22,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:03:22,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:03:22,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:03:22,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:03:22,867 INFO L87 Difference]: Start difference. First operand 27 states and 34 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 12:03:22,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:03:22,919 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2022-11-20 12:03:22,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:03:22,920 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 12:03:22,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:03:22,921 INFO L225 Difference]: With dead ends: 35 [2022-11-20 12:03:22,922 INFO L226 Difference]: Without dead ends: 31 [2022-11-20 12:03:22,922 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 12:03:22,924 INFO L413 NwaCegarLoop]: 31 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, 107 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:03:22,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 107 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:03:22,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-20 12:03:22,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2022-11-20 12:03:22,931 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, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:03:22,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2022-11-20 12:03:22,933 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 17 [2022-11-20 12:03:22,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:03:22,933 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2022-11-20 12:03:22,933 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 12:03:22,934 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2022-11-20 12:03:22,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 12:03:22,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:03:22,935 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 12:03:22,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 12:03:22,937 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:03:22,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:22,937 INFO L85 PathProgramCache]: Analyzing trace with hash 1210156990, now seen corresponding path program 1 times [2022-11-20 12:03:22,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:22,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121070874] [2022-11-20 12:03:22,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:22,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:23,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:03:23,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:23,196 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 12:03:23,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:03:23,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121070874] [2022-11-20 12:03:23,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121070874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:23,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:23,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:03:23,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735409006] [2022-11-20 12:03:23,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:23,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:03:23,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:03:23,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:03:23,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:03:23,200 INFO L87 Difference]: Start difference. First operand 27 states and 34 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 12:03:23,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:03:23,276 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2022-11-20 12:03:23,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:03:23,279 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 12:03:23,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:03:23,281 INFO L225 Difference]: With dead ends: 35 [2022-11-20 12:03:23,281 INFO L226 Difference]: Without dead ends: 31 [2022-11-20 12:03:23,282 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 12:03:23,283 INFO L413 NwaCegarLoop]: 31 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, 107 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 12:03:23,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 107 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:03:23,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-20 12:03:23,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2022-11-20 12:03:23,291 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, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:03:23,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2022-11-20 12:03:23,293 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 18 [2022-11-20 12:03:23,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:03:23,294 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2022-11-20 12:03:23,294 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 12:03:23,295 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2022-11-20 12:03:23,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 12:03:23,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:03:23,296 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:03:23,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 12:03:23,297 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:03:23,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:23,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1872385022, now seen corresponding path program 1 times [2022-11-20 12:03:23,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:23,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377282661] [2022-11-20 12:03:23,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:23,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:23,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:23,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:03:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:23,511 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 12:03:23,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:03:23,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377282661] [2022-11-20 12:03:23,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377282661] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:23,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:23,513 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:03:23,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202906685] [2022-11-20 12:03:23,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:23,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:03:23,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:03:23,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:03:23,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:03:23,520 INFO L87 Difference]: Start difference. First operand 27 states and 34 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 12:03:23,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:03:23,611 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2022-11-20 12:03:23,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:03:23,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 19 [2022-11-20 12:03:23,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:03:23,613 INFO L225 Difference]: With dead ends: 35 [2022-11-20 12:03:23,614 INFO L226 Difference]: Without dead ends: 31 [2022-11-20 12:03:23,614 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 12:03:23,616 INFO L413 NwaCegarLoop]: 31 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, 107 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 12:03:23,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 107 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:03:23,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-20 12:03:23,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2022-11-20 12:03:23,637 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, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:03:23,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 34 transitions. [2022-11-20 12:03:23,638 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 34 transitions. Word has length 19 [2022-11-20 12:03:23,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:03:23,639 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 34 transitions. [2022-11-20 12:03:23,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 12:03:23,639 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 34 transitions. [2022-11-20 12:03:23,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-20 12:03:23,640 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:03:23,641 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:03:23,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 12:03:23,641 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:03:23,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:23,642 INFO L85 PathProgramCache]: Analyzing trace with hash -679771939, now seen corresponding path program 1 times [2022-11-20 12:03:23,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:03:23,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801870893] [2022-11-20 12:03:23,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:23,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:03:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:03:23,682 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-20 12:03:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-20 12:03:23,719 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-20 12:03:23,719 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-20 12:03:23,721 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 12:03:23,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 12:03:23,728 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-11-20 12:03:23,733 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:03:23,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:03:23 BoogieIcfgContainer [2022-11-20 12:03:23,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:03:23,786 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:03:23,786 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:03:23,787 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:03:23,787 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:03:21" (3/4) ... [2022-11-20 12:03:23,791 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-20 12:03:23,791 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:03:23,793 INFO L158 Benchmark]: Toolchain (without parser) took 3440.26ms. Allocated memory is still 180.4MB. Free memory was 147.9MB in the beginning and 87.7MB in the end (delta: 60.3MB). Peak memory consumption was 59.7MB. Max. memory is 16.1GB. [2022-11-20 12:03:23,793 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 136.3MB. Free memory is still 80.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:03:23,794 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.42ms. Allocated memory is still 180.4MB. Free memory was 147.4MB in the beginning and 136.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 12:03:23,797 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.37ms. Allocated memory is still 180.4MB. Free memory was 136.9MB in the beginning and 135.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:03:23,801 INFO L158 Benchmark]: Boogie Preprocessor took 35.71ms. Allocated memory is still 180.4MB. Free memory was 135.6MB in the beginning and 134.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:03:23,801 INFO L158 Benchmark]: RCFGBuilder took 590.90ms. Allocated memory is still 180.4MB. Free memory was 134.1MB in the beginning and 121.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 12:03:23,802 INFO L158 Benchmark]: TraceAbstraction took 2427.49ms. Allocated memory is still 180.4MB. Free memory was 120.9MB in the beginning and 87.7MB in the end (delta: 33.2MB). Peak memory consumption was 32.4MB. Max. memory is 16.1GB. [2022-11-20 12:03:23,802 INFO L158 Benchmark]: Witness Printer took 5.26ms. Allocated memory is still 180.4MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:03:23,805 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 136.3MB. Free memory is still 80.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 321.42ms. Allocated memory is still 180.4MB. Free memory was 147.4MB in the beginning and 136.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.37ms. Allocated memory is still 180.4MB. Free memory was 136.9MB in the beginning and 135.6MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.71ms. Allocated memory is still 180.4MB. Free memory was 135.6MB in the beginning and 134.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 590.90ms. Allocated memory is still 180.4MB. Free memory was 134.1MB in the beginning and 121.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2427.49ms. Allocated memory is still 180.4MB. Free memory was 120.9MB in the beginning and 87.7MB in the end (delta: 33.2MB). Peak memory consumption was 32.4MB. Max. memory is 16.1GB. * Witness Printer took 5.26ms. Allocated memory is still 180.4MB. Free memory is still 87.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 80]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 79, overapproximation of someBinaryArithmeticDOUBLEoperation at line 67. Possible FailurePath: [L66] double x = __VERIFIER_nondet_double(); [L67] double y = 0.0 / 0.0; [L74] CALL, EXPR isnan_double(x) [L18] return x != x; VAL [\old(x)=4294967305, \result=0, x=4294967305] [L74] RET, EXPR isnan_double(x) [L74] COND TRUE !isnan_double(x) [L76] CALL, EXPR fmax_double(x, y) [L57] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967305] [L29] __uint32_t msw, lsw; VAL [\old(x)=4294967305, x=4294967305] [L32] ieee_double_shape_type ew_u; [L33] ew_u.value = (x) [L34] EXPR ew_u.parts.msw [L34] (msw) = ew_u.parts.msw [L35] EXPR ew_u.parts.lsw [L35] (lsw) = ew_u.parts.lsw [L38-L39] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967305, lsw=4294967297, msw=4293918721, x=4294967305] [L41-L42] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967305, lsw=4294967297, msw=4293918721, x=4294967305] [L44-L45] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967305, lsw=4294967297, msw=4293918721, x=4294967305] [L48-L49] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L52] return 0; VAL [\old(x)=4294967305, \result=0, lsw=4294967297, msw=4293918721, x=4294967305] [L57] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967305, \old(y)=4294967304, __fpclassify_double(x)=0, x=4294967305, y=4294967304] [L57] COND TRUE __fpclassify_double(x) == 0 [L58] return y; VAL [\old(x)=4294967305, \old(y)=4294967304, \result=4294967304, x=4294967305, y=4294967304] [L76] RET, EXPR fmax_double(x, y) [L76] double res = fmax_double(x, y); [L79] COND TRUE res != x VAL [res=4294967304, x=4294967305, y=4294967304] [L80] reach_error() VAL [res=4294967304, x=4294967305, y=4294967304] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 5 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5 mSDsluCounter, 474 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 322 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 90 IncrementalHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 152 mSDtfsCounter, 90 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=27occurred in iteration=0, 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, 1.1s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 196 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 12:03:23,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 0ddb7cbdb5243e0dc5a18ffa5957d423189625fe9ffc6441855806502cce15ab --- 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 12:03:26,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:03:26,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:03:26,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:03:26,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:03:26,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:03:26,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:03:26,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:03:26,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:03:26,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:03:26,881 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:03:26,882 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:03:26,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:03:26,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:03:26,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:03:26,887 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:03:26,888 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:03:26,890 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:03:26,892 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:03:26,894 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:03:26,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:03:26,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:03:26,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:03:26,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:03:26,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:03:26,907 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:03:26,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:03:26,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:03:26,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:03:26,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:03:26,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:03:26,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:03:26,913 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:03:26,914 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:03:26,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:03:26,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:03:26,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:03:26,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:03:26,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:03:26,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:03:26,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:03:26,926 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-20 12:03:26,981 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:03:26,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:03:26,982 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:03:26,982 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:03:26,983 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:03:26,983 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:03:26,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:03:26,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:03:26,985 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:03:26,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:03:26,986 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 12:03:26,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 12:03:26,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:03:26,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:03:26,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:03:26,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:03:26,990 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-20 12:03:26,991 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-20 12:03:26,991 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-20 12:03:26,991 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 12:03:26,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:03:26,991 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:03:26,992 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:03:26,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:03:26,993 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:03:26,993 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:03:26,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:03:26,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:03:26,995 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:03:26,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:03:26,995 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-20 12:03:26,995 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-20 12:03:26,996 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:03:26,996 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:03:26,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:03:26,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-20 12:03:26,998 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_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ddb7cbdb5243e0dc5a18ffa5957d423189625fe9ffc6441855806502cce15ab [2022-11-20 12:03:27,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:03:27,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:03:27,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:03:27,580 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:03:27,580 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:03:27,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/float-newlib/double_req_bl_1251b.c [2022-11-20 12:03:31,160 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:03:31,521 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:03:31,521 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/sv-benchmarks/c/float-newlib/double_req_bl_1251b.c [2022-11-20 12:03:31,530 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/data/41fa25f03/291e7471d6934be7aae65133dd541b96/FLAG40c7932fd [2022-11-20 12:03:31,547 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/data/41fa25f03/291e7471d6934be7aae65133dd541b96 [2022-11-20 12:03:31,550 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:03:31,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:03:31,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:03:31,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:03:31,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:03:31,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:03:31" (1/1) ... [2022-11-20 12:03:31,568 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@427d68a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:31, skipping insertion in model container [2022-11-20 12:03:31,568 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:03:31" (1/1) ... [2022-11-20 12:03:31,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:03:31,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:03:31,789 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_040ccf68-8ce5-4ba9-a724-4e6b09032d86/sv-benchmarks/c/float-newlib/double_req_bl_1251b.c[2080,2093] [2022-11-20 12:03:31,795 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:03:31,830 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:03:31,871 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_040ccf68-8ce5-4ba9-a724-4e6b09032d86/sv-benchmarks/c/float-newlib/double_req_bl_1251b.c[2080,2093] [2022-11-20 12:03:31,876 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:03:31,925 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:03:31,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:31 WrapperNode [2022-11-20 12:03:31,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:03:31,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:03:31,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:03:31,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:03:31,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:31" (1/1) ... [2022-11-20 12:03:31,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:31" (1/1) ... [2022-11-20 12:03:32,002 INFO L138 Inliner]: procedures = 21, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 46 [2022-11-20 12:03:32,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:03:32,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:03:32,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:03:32,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:03:32,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:31" (1/1) ... [2022-11-20 12:03:32,019 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:31" (1/1) ... [2022-11-20 12:03:32,035 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:31" (1/1) ... [2022-11-20 12:03:32,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:31" (1/1) ... [2022-11-20 12:03:32,051 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:31" (1/1) ... [2022-11-20 12:03:32,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:31" (1/1) ... [2022-11-20 12:03:32,072 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:31" (1/1) ... [2022-11-20 12:03:32,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:31" (1/1) ... [2022-11-20 12:03:32,079 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:03:32,089 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:03:32,089 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:03:32,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:03:32,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:31" (1/1) ... [2022-11-20 12:03:32,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:03:32,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:03:32,213 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:03:32,271 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:03:32,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:03:32,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2022-11-20 12:03:32,302 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-20 12:03:32,304 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:03:32,305 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2022-11-20 12:03:32,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2022-11-20 12:03:32,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-20 12:03:32,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:03:32,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:03:32,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:03:32,465 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:03:32,489 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:03:32,865 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:03:32,872 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:03:32,876 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 12:03:32,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:03:32 BoogieIcfgContainer [2022-11-20 12:03:32,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:03:32,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:03:32,884 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:03:32,888 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:03:32,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:03:31" (1/3) ... [2022-11-20 12:03:32,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@529f839a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:03:32, skipping insertion in model container [2022-11-20 12:03:32,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:03:31" (2/3) ... [2022-11-20 12:03:32,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@529f839a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:03:32, skipping insertion in model container [2022-11-20 12:03:32,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:03:32" (3/3) ... [2022-11-20 12:03:32,895 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2022-11-20 12:03:32,931 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:03:32,931 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:03:33,021 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:03:33,028 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;@1c9e13ed, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:03:33,029 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:03:33,037 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 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 12:03:33,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-20 12:03:33,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:03:33,048 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:03:33,049 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:03:33,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:33,056 INFO L85 PathProgramCache]: Analyzing trace with hash -315010535, now seen corresponding path program 1 times [2022-11-20 12:03:33,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:03:33,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40690167] [2022-11-20 12:03:33,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:33,073 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 12:03:33,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:03:33,080 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:33,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:33,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 12:03:33,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:03:33,322 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 12:03:33,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:03:33,323 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:03:33,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40690167] [2022-11-20 12:03:33,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40690167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:33,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:33,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:03:33,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700449101] [2022-11-20 12:03:33,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:33,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:03:33,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:03:33,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:03:33,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:03:33,389 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.55) internal successors, (31), 21 states have internal predecessors, (31), 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 6.0) 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 12:03:33,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:03:33,412 INFO L93 Difference]: Finished difference Result 45 states and 65 transitions. [2022-11-20 12:03:33,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:03:33,415 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) 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 12:03:33,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:03:33,425 INFO L225 Difference]: With dead ends: 45 [2022-11-20 12:03:33,426 INFO L226 Difference]: Without dead ends: 21 [2022-11-20 12:03:33,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 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 12:03:33,435 INFO L413 NwaCegarLoop]: 32 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, 32 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 12:03:33,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:03:33,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-20 12:03:33,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-20 12:03:33,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 17 states have internal predecessors, (23), 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 12:03:33,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 27 transitions. [2022-11-20 12:03:33,480 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 27 transitions. Word has length 14 [2022-11-20 12:03:33,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:03:33,481 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 27 transitions. [2022-11-20 12:03:33,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) 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 12:03:33,482 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 27 transitions. [2022-11-20 12:03:33,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-20 12:03:33,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:03:33,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:03:33,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:33,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:33,693 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:03:33,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:33,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1327229704, now seen corresponding path program 1 times [2022-11-20 12:03:33,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:03:33,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855215651] [2022-11-20 12:03:33,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:33,696 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:03:33,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:03:33,698 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:33,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:33,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:33,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:03:33,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:03:33,918 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 12:03:33,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:03:33,919 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:03:33,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855215651] [2022-11-20 12:03:33,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855215651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:33,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:33,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:03:33,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515289827] [2022-11-20 12:03:33,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:33,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:03:33,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:03:33,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:03:33,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:03:33,933 INFO L87 Difference]: Start difference. First operand 21 states and 27 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 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 12:03:34,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:03:34,259 INFO L93 Difference]: Finished difference Result 28 states and 35 transitions. [2022-11-20 12:03:34,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:03:34,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 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 12:03:34,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:03:34,263 INFO L225 Difference]: With dead ends: 28 [2022-11-20 12:03:34,263 INFO L226 Difference]: Without dead ends: 24 [2022-11-20 12:03:34,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 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 12:03:34,266 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:03:34,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 69 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:03:34,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-20 12:03:34,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-20 12:03:34,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 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 12:03:34,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2022-11-20 12:03:34,277 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 15 [2022-11-20 12:03:34,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:03:34,278 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-11-20 12:03:34,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 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 12:03:34,278 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2022-11-20 12:03:34,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-20 12:03:34,280 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:03:34,280 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:03:34,302 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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)] Ended with exit code 0 [2022-11-20 12:03:34,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:34,496 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:03:34,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:34,497 INFO L85 PathProgramCache]: Analyzing trace with hash -2095904004, now seen corresponding path program 1 times [2022-11-20 12:03:34,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:03:34,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1008119562] [2022-11-20 12:03:34,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:34,499 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 12:03:34,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:03:34,501 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:34,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:34,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:34,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:03:34,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:03:34,675 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 12:03:34,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:03:34,676 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:03:34,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1008119562] [2022-11-20 12:03:34,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1008119562] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:34,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:34,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:03:34,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93086766] [2022-11-20 12:03:34,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:34,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:03:34,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:03:34,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:03:34,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:03:34,680 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 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 12:03:34,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:03:34,725 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2022-11-20 12:03:34,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:03:34,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 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 12:03:34,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:03:34,727 INFO L225 Difference]: With dead ends: 31 [2022-11-20 12:03:34,727 INFO L226 Difference]: Without dead ends: 27 [2022-11-20 12:03:34,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 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 12:03:34,729 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:03:34,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:03:34,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-20 12:03:34,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2022-11-20 12:03:34,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 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 12:03:34,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2022-11-20 12:03:34,739 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 16 [2022-11-20 12:03:34,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:03:34,739 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-11-20 12:03:34,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 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 12:03:34,740 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2022-11-20 12:03:34,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-20 12:03:34,741 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:03:34,741 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 12:03:34,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:34,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:34,955 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:03:34,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:34,956 INFO L85 PathProgramCache]: Analyzing trace with hash -899956100, now seen corresponding path program 1 times [2022-11-20 12:03:34,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:03:34,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [556808512] [2022-11-20 12:03:34,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:34,957 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 12:03:34,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:03:34,959 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:34,967 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:35,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:35,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:03:35,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:03:35,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 12:03:35,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:03:35,117 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:03:35,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [556808512] [2022-11-20 12:03:35,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [556808512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:35,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:35,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:03:35,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085344241] [2022-11-20 12:03:35,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:35,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:03:35,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:03:35,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:03:35,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:03:35,120 INFO L87 Difference]: Start difference. First operand 24 states and 31 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, (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 12:03:35,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:03:35,282 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2022-11-20 12:03:35,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:03:35,284 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, (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 12:03:35,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:03:35,285 INFO L225 Difference]: With dead ends: 31 [2022-11-20 12:03:35,285 INFO L226 Difference]: Without dead ends: 27 [2022-11-20 12:03:35,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 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 12:03:35,287 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:03:35,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:03:35,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-20 12:03:35,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2022-11-20 12:03:35,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 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 12:03:35,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2022-11-20 12:03:35,304 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 17 [2022-11-20 12:03:35,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:03:35,305 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-11-20 12:03:35,305 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, (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 12:03:35,305 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2022-11-20 12:03:35,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 12:03:35,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:03:35,307 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 12:03:35,321 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:35,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:35,512 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:03:35,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:35,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1069737984, now seen corresponding path program 1 times [2022-11-20 12:03:35,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:03:35,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815100539] [2022-11-20 12:03:35,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:35,513 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 12:03:35,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:03:35,515 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:35,517 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:35,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:35,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:03:35,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:03:35,677 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 12:03:35,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:03:35,677 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:03:35,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815100539] [2022-11-20 12:03:35,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815100539] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:35,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:35,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:03:35,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441577753] [2022-11-20 12:03:35,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:35,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:03:35,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:03:35,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:03:35,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:03:35,681 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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 12:03:35,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:03:35,864 INFO L93 Difference]: Finished difference Result 31 states and 39 transitions. [2022-11-20 12:03:35,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:03:35,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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 12:03:35,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:03:35,876 INFO L225 Difference]: With dead ends: 31 [2022-11-20 12:03:35,876 INFO L226 Difference]: Without dead ends: 27 [2022-11-20 12:03:35,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 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 12:03:35,877 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:03:35,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:03:35,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-20 12:03:35,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2022-11-20 12:03:35,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 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 12:03:35,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2022-11-20 12:03:35,885 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 18 [2022-11-20 12:03:35,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:03:35,886 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-11-20 12:03:35,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 3 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 12:03:35,886 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2022-11-20 12:03:35,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-20 12:03:35,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:03:35,891 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 12:03:35,907 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:36,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:36,092 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:03:36,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:36,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1957241665, now seen corresponding path program 1 times [2022-11-20 12:03:36,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:03:36,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412150974] [2022-11-20 12:03:36,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:36,094 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 12:03:36,094 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:03:36,095 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:36,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:36,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:36,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-20 12:03:36,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:03:37,536 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 12:03:37,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:03:37,537 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:03:37,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1412150974] [2022-11-20 12:03:37,538 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1412150974] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:37,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:37,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:03:37,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861301199] [2022-11-20 12:03:37,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:37,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:03:37,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:03:37,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:03:37,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:03:37,547 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 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 12:03:37,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:03:37,812 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2022-11-20 12:03:37,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:03:37,814 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 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 12:03:37,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:03:37,815 INFO L225 Difference]: With dead ends: 41 [2022-11-20 12:03:37,815 INFO L226 Difference]: Without dead ends: 23 [2022-11-20 12:03:37,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:03:37,816 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 16 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:03:37,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 63 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 27 Unchecked, 0.1s Time] [2022-11-20 12:03:37,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-20 12:03:37,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-20 12:03:37,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 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 12:03:37,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2022-11-20 12:03:37,832 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 18 [2022-11-20 12:03:37,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:03:37,833 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2022-11-20 12:03:37,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 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 12:03:37,833 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2022-11-20 12:03:37,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-20 12:03:37,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:03:37,835 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:03:37,855 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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)] Forceful destruction successful, exit code 0 [2022-11-20 12:03:38,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:38,051 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:03:38,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:38,052 INFO L85 PathProgramCache]: Analyzing trace with hash -147482436, now seen corresponding path program 1 times [2022-11-20 12:03:38,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:03:38,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228139377] [2022-11-20 12:03:38,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:38,052 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 12:03:38,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:03:38,054 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:38,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:38,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:03:38,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:03:38,583 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 12:03:38,583 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:03:38,584 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:03:38,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228139377] [2022-11-20 12:03:38,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228139377] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:38,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:38,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:03:38,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276936949] [2022-11-20 12:03:38,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:38,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:03:38,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:03:38,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:03:38,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:03:38,587 INFO L87 Difference]: Start difference. First operand 23 states and 28 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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 12:03:38,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:03:38,636 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2022-11-20 12:03:38,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:03:38,637 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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 12:03:38,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:03:38,638 INFO L225 Difference]: With dead ends: 34 [2022-11-20 12:03:38,638 INFO L226 Difference]: Without dead ends: 29 [2022-11-20 12:03:38,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:03:38,639 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:03:38,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 111 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 24 Unchecked, 0.0s Time] [2022-11-20 12:03:38,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-20 12:03:38,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2022-11-20 12:03:38,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.263157894736842) internal successors, (24), 21 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:03:38,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-11-20 12:03:38,648 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 23 [2022-11-20 12:03:38,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:03:38,649 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-11-20 12:03:38,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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 12:03:38,650 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-11-20 12:03:38,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-20 12:03:38,650 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:03:38,651 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 12:03:38,681 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:38,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:38,877 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:03:38,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:38,878 INFO L85 PathProgramCache]: Analyzing trace with hash 53961836, now seen corresponding path program 1 times [2022-11-20 12:03:38,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:03:38,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [440543393] [2022-11-20 12:03:38,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:38,879 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-20 12:03:38,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:03:38,881 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:38,885 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:39,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:39,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:03:39,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:03:39,455 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 12:03:39,455 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:03:39,456 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:03:39,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [440543393] [2022-11-20 12:03:39,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [440543393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:39,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:39,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:03:39,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519069932] [2022-11-20 12:03:39,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:39,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:03:39,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:03:39,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:03:39,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:03:39,459 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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 12:03:39,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:03:39,510 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-11-20 12:03:39,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:03:39,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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 12:03:39,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:03:39,512 INFO L225 Difference]: With dead ends: 36 [2022-11-20 12:03:39,512 INFO L226 Difference]: Without dead ends: 31 [2022-11-20 12:03:39,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:03:39,514 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:03:39,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 111 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 28 Unchecked, 0.0s Time] [2022-11-20 12:03:39,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-20 12:03:39,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2022-11-20 12:03:39,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.263157894736842) internal successors, (24), 21 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:03:39,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-11-20 12:03:39,522 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 24 [2022-11-20 12:03:39,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:03:39,523 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-11-20 12:03:39,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 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 12:03:39,524 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-11-20 12:03:39,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-20 12:03:39,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:03:39,525 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, 1] [2022-11-20 12:03:39,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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)] Forceful destruction successful, exit code 0 [2022-11-20 12:03:39,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:39,739 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:03:39,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:39,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1258814400, now seen corresponding path program 1 times [2022-11-20 12:03:39,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:03:39,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344771729] [2022-11-20 12:03:39,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:39,741 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 12:03:39,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:03:39,742 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:39,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:39,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 12:03:39,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:03:40,258 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 12:03:40,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:03:40,259 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:03:40,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344771729] [2022-11-20 12:03:40,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344771729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:40,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:40,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:03:40,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545324046] [2022-11-20 12:03:40,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:40,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:03:40,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:03:40,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:03:40,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:03:40,262 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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 12:03:40,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:03:40,310 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2022-11-20 12:03:40,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:03:40,310 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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 25 [2022-11-20 12:03:40,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:03:40,311 INFO L225 Difference]: With dead ends: 36 [2022-11-20 12:03:40,312 INFO L226 Difference]: Without dead ends: 31 [2022-11-20 12:03:40,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:03:40,313 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:03:40,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 101 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 24 Unchecked, 0.0s Time] [2022-11-20 12:03:40,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-11-20 12:03:40,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2022-11-20 12:03:40,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 19 states have (on average 1.263157894736842) internal successors, (24), 21 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-20 12:03:40,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-11-20 12:03:40,321 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 25 [2022-11-20 12:03:40,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:03:40,322 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-11-20 12:03:40,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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 12:03:40,322 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-11-20 12:03:40,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:03:40,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:03:40,324 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, 1, 1] [2022-11-20 12:03:40,344 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:40,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:40,544 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:03:40,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:40,544 INFO L85 PathProgramCache]: Analyzing trace with hash -790414352, now seen corresponding path program 1 times [2022-11-20 12:03:40,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:03:40,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1334630768] [2022-11-20 12:03:40,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:40,561 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 12:03:40,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:03:40,565 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:40,573 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 (11)] Waiting until timeout for monitored process [2022-11-20 12:03:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:40,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:03:40,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:03:41,170 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 12:03:41,171 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:03:41,171 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:03:41,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1334630768] [2022-11-20 12:03:41,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1334630768] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:41,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:41,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:03:41,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183508887] [2022-11-20 12:03:41,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:41,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:03:41,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:03:41,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:03:41,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:03:41,174 INFO L87 Difference]: Start difference. First operand 25 states and 30 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 12:03:41,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:03:41,225 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-11-20 12:03:41,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:03:41,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 26 [2022-11-20 12:03:41,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:03:41,227 INFO L225 Difference]: With dead ends: 34 [2022-11-20 12:03:41,227 INFO L226 Difference]: Without dead ends: 29 [2022-11-20 12:03:41,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:03:41,229 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 24 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:03:41,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 91 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 24 Unchecked, 0.0s Time] [2022-11-20 12:03:41,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-20 12:03:41,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 23. [2022-11-20 12:03:41,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 19 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:03:41,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2022-11-20 12:03:41,240 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 26 [2022-11-20 12:03:41,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:03:41,243 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2022-11-20 12:03:41,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 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 12:03:41,244 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2022-11-20 12:03:41,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:03:41,245 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:03:41,245 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, 1, 1] [2022-11-20 12:03:41,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 (11)] Forceful destruction successful, exit code 0 [2022-11-20 12:03:41,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:41,463 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:03:41,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:41,464 INFO L85 PathProgramCache]: Analyzing trace with hash 97089329, now seen corresponding path program 1 times [2022-11-20 12:03:41,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:03:41,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1450155642] [2022-11-20 12:03:41,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:41,465 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 12:03:41,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:03:41,467 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:41,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 (12)] Waiting until timeout for monitored process [2022-11-20 12:03:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:41,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-20 12:03:41,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:03:41,655 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 12:03:41,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:03:41,656 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:03:41,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1450155642] [2022-11-20 12:03:41,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1450155642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:41,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:03:41,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 12:03:41,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719004329] [2022-11-20 12:03:41,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:41,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 12:03:41,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:03:41,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 12:03:41,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 12:03:41,659 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 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 12:03:41,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:03:41,730 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-11-20 12:03:41,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 12:03:41,732 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 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 26 [2022-11-20 12:03:41,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:03:41,732 INFO L225 Difference]: With dead ends: 27 [2022-11-20 12:03:41,733 INFO L226 Difference]: Without dead ends: 23 [2022-11-20 12:03:41,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 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 12:03:41,734 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 0 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:03:41,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 66 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:03:41,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-20 12:03:41,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-20 12:03:41,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.2222222222222223) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-20 12:03:41,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-11-20 12:03:41,739 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 26 [2022-11-20 12:03:41,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:03:41,744 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-11-20 12:03:41,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 3 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 12:03:41,745 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-11-20 12:03:41,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-20 12:03:41,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:03:41,749 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, 1, 1] [2022-11-20 12:03:41,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:03:41,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:41,965 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:03:41,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:03:41,966 INFO L85 PathProgramCache]: Analyzing trace with hash 97029747, now seen corresponding path program 1 times [2022-11-20 12:03:41,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-20 12:03:41,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474102378] [2022-11-20 12:03:41,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:41,966 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 12:03:41,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/mathsat [2022-11-20 12:03:41,968 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 12:03:41,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 (13)] Waiting until timeout for monitored process [2022-11-20 12:03:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:42,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-20 12:03:42,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:03:43,837 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 12:03:43,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:03:44,400 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-20 12:03:44,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474102378] [2022-11-20 12:03:44,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474102378] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:03:44,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [239348851] [2022-11-20 12:03:44,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:03:44,401 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-20 12:03:44,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/cvc4 [2022-11-20 12:03:44,407 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-20 12:03:44,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2022-11-20 12:03:44,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:03:44,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-20 12:03:44,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:03:45,757 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 12:03:45,758 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:03:45,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [239348851] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:03:45,758 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:03:45,758 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-20 12:03:45,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263987710] [2022-11-20 12:03:45,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:03:45,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:03:45,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-20 12:03:45,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:03:45,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:03:45,760 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 12:03:46,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:03:46,340 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-11-20 12:03:46,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:03:46,340 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 26 [2022-11-20 12:03:46,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:03:46,340 INFO L225 Difference]: With dead ends: 23 [2022-11-20 12:03:46,341 INFO L226 Difference]: Without dead ends: 0 [2022-11-20 12:03:46,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:03:46,342 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:03:46,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 92 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:03:46,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-20 12:03:46,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-20 12:03:46,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 12:03:46,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-20 12:03:46,343 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2022-11-20 12:03:46,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:03:46,343 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-20 12:03:46,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 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 12:03:46,344 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-20 12:03:46,344 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-20 12:03:46,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-20 12:03:46,369 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:03:46,560 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2022-11-20 12:03:46,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/cvc4 --incremental --print-success --lang smt [2022-11-20 12:03:46,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-20 12:03:47,204 INFO L899 garLoopResultBuilder]: For program point L31-1(lines 31 36) no Hoare annotation was computed. [2022-11-20 12:03:47,204 INFO L895 garLoopResultBuilder]: At program point L31-2(lines 31 36) the Hoare annotation is: (= |__fpclassify_double_#in~x| __fpclassify_double_~x) [2022-11-20 12:03:47,204 INFO L899 garLoopResultBuilder]: For program point L31-3(lines 28 53) no Hoare annotation was computed. [2022-11-20 12:03:47,204 INFO L899 garLoopResultBuilder]: For program point __fpclassify_doubleFINAL(lines 28 53) no Hoare annotation was computed. [2022-11-20 12:03:47,204 INFO L899 garLoopResultBuilder]: For program point L48(lines 48 52) no Hoare annotation was computed. [2022-11-20 12:03:47,205 INFO L899 garLoopResultBuilder]: For program point L44(lines 44 52) no Hoare annotation was computed. [2022-11-20 12:03:47,205 INFO L902 garLoopResultBuilder]: At program point __fpclassify_doubleENTRY(lines 28 53) the Hoare annotation is: true [2022-11-20 12:03:47,205 INFO L899 garLoopResultBuilder]: For program point __fpclassify_doubleEXIT(lines 28 53) no Hoare annotation was computed. [2022-11-20 12:03:47,205 INFO L899 garLoopResultBuilder]: For program point L41(lines 41 52) no Hoare annotation was computed. [2022-11-20 12:03:47,205 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-20 12:03:47,205 INFO L895 garLoopResultBuilder]: At program point L62(lines 55 63) the Hoare annotation is: (and (= (_ bv0 32) |ULTIMATE.start_isnan_double_#res#1|) (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_fmax_double_~x#1| |ULTIMATE.start_main_~x~0#1|) (= |ULTIMATE.start_fmax_double_#res#1| |ULTIMATE.start_main_~x~0#1|)) [2022-11-20 12:03:47,205 INFO L902 garLoopResultBuilder]: At program point L85(lines 65 86) the Hoare annotation is: true [2022-11-20 12:03:47,205 INFO L899 garLoopResultBuilder]: For program point L79(lines 79 82) no Hoare annotation was computed. [2022-11-20 12:03:47,205 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-20 12:03:47,205 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-20 12:03:47,205 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-20 12:03:47,206 INFO L895 garLoopResultBuilder]: At program point L59(line 59) the Hoare annotation is: (and (= (_ bv0 32) |ULTIMATE.start_isnan_double_#res#1|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_fmax_double_~y#1|)) (= |ULTIMATE.start_fmax_double_~x#1| |ULTIMATE.start_main_~x~0#1|) (fp.eq |ULTIMATE.start_fmax_double_~x#1| |ULTIMATE.start_fmax_double_~x#1|)) [2022-11-20 12:03:47,206 INFO L899 garLoopResultBuilder]: For program point L59-1(lines 59 60) no Hoare annotation was computed. [2022-11-20 12:03:47,206 INFO L895 garLoopResultBuilder]: At program point L57(line 57) the Hoare annotation is: (and (= (_ bv0 32) |ULTIMATE.start_isnan_double_#res#1|) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_fmax_double_~y#1|)) (= |ULTIMATE.start_fmax_double_~x#1| |ULTIMATE.start_main_~x~0#1|) (fp.eq |ULTIMATE.start_fmax_double_~x#1| |ULTIMATE.start_fmax_double_~x#1|)) [2022-11-20 12:03:47,206 INFO L899 garLoopResultBuilder]: For program point L57-1(lines 57 58) no Hoare annotation was computed. [2022-11-20 12:03:47,206 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 80) no Hoare annotation was computed. [2022-11-20 12:03:47,206 INFO L895 garLoopResultBuilder]: At program point L18(line 18) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_main_~y~0#1|)) (let ((.cse0 (fp.eq |ULTIMATE.start_main_~x~0#1| |ULTIMATE.start_main_~x~0#1|))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_double_#res#1|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res#1|) (not .cse0))))) [2022-11-20 12:03:47,207 INFO L899 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2022-11-20 12:03:47,207 INFO L899 garLoopResultBuilder]: For program point L74(lines 74 83) no Hoare annotation was computed. [2022-11-20 12:03:47,207 INFO L899 garLoopResultBuilder]: For program point L74-2(lines 74 83) no Hoare annotation was computed. [2022-11-20 12:03:47,211 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:03:47,213 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 12:03:47,219 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-11-20 12:03:47,227 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-11-20 12:03:47,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:03:47 BoogieIcfgContainer [2022-11-20 12:03:47,235 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 12:03:47,236 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 12:03:47,236 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 12:03:47,237 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 12:03:47,237 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:03:32" (3/4) ... [2022-11-20 12:03:47,240 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 12:03:47,248 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2022-11-20 12:03:47,256 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2022-11-20 12:03:47,256 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-20 12:03:47,257 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 12:03:47,257 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 12:03:47,288 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && ((0bv32 == \result && ~fp.eq~DOUBLE(x, x)) || (1bv32 == \result && !~fp.eq~DOUBLE(x, x))) [2022-11-20 12:03:47,289 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2022-11-20 12:03:47,289 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((0bv32 == \result && ~fp.eq~DOUBLE(x, x)) && x == x) && \result == x [2022-11-20 12:03:47,309 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 12:03:47,309 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 12:03:47,310 INFO L158 Benchmark]: Toolchain (without parser) took 15757.96ms. Allocated memory was 69.2MB in the beginning and 109.1MB in the end (delta: 39.8MB). Free memory was 47.1MB in the beginning and 31.9MB in the end (delta: 15.2MB). Peak memory consumption was 57.6MB. Max. memory is 16.1GB. [2022-11-20 12:03:47,310 INFO L158 Benchmark]: CDTParser took 1.91ms. Allocated memory is still 69.2MB. Free memory is still 46.5MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:03:47,311 INFO L158 Benchmark]: CACSL2BoogieTranslator took 372.15ms. Allocated memory is still 69.2MB. Free memory was 47.0MB in the beginning and 35.7MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 12:03:47,311 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.66ms. Allocated memory is still 69.2MB. Free memory was 35.5MB in the beginning and 34.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 12:03:47,312 INFO L158 Benchmark]: Boogie Preprocessor took 83.36ms. Allocated memory is still 69.2MB. Free memory was 34.0MB in the beginning and 32.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:03:47,312 INFO L158 Benchmark]: RCFGBuilder took 790.23ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 32.3MB in the beginning and 58.9MB in the end (delta: -26.5MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2022-11-20 12:03:47,313 INFO L158 Benchmark]: TraceAbstraction took 14353.65ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 58.1MB in the beginning and 34.0MB in the end (delta: 24.1MB). Peak memory consumption was 44.4MB. Max. memory is 16.1GB. [2022-11-20 12:03:47,314 INFO L158 Benchmark]: Witness Printer took 73.35ms. Allocated memory is still 109.1MB. Free memory was 34.0MB in the beginning and 31.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 12:03:47,320 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.91ms. Allocated memory is still 69.2MB. Free memory is still 46.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 372.15ms. Allocated memory is still 69.2MB. Free memory was 47.0MB in the beginning and 35.7MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.66ms. Allocated memory is still 69.2MB. Free memory was 35.5MB in the beginning and 34.0MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 83.36ms. Allocated memory is still 69.2MB. Free memory was 34.0MB in the beginning and 32.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 790.23ms. Allocated memory was 69.2MB in the beginning and 90.2MB in the end (delta: 21.0MB). Free memory was 32.3MB in the beginning and 58.9MB in the end (delta: -26.5MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. * TraceAbstraction took 14353.65ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 58.1MB in the beginning and 34.0MB in the end (delta: 24.1MB). Peak memory consumption was 44.4MB. Max. memory is 16.1GB. * Witness Printer took 73.35ms. Allocated memory is still 109.1MB. Free memory was 34.0MB in the beginning and 31.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 80]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 14.2s, OverallIterations: 12, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 52 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 48 mSDsluCounter, 970 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 127 IncrementalHoareTripleChecker+Unchecked, 679 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 115 IncrementalHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 291 mSDtfsCounter, 115 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 288 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 71, 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, 12 MinimizatonAttempts, 31 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 13 PreInvPairs, 18 NumberOfFragments, 76 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 478 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 274 NumberOfCodeBlocks, 274 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 261 ConstructedInterpolants, 58 QuantifiedInterpolants, 1453 SizeOfPredicates, 57 NumberOfNonLiveVariables, 975 ConjunctsInSsa, 107 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 37/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant [2022-11-20 12:03:47,345 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2022-11-20 12:03:47,345 WARN L421 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == y) && ((0bv32 == \result && ~fp.eq~DOUBLE(x, x)) || (1bv32 == \result && !~fp.eq~DOUBLE(x, x))) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((0bv32 == \result && ~fp.eq~DOUBLE(x, x)) && x == x) && \result == x RESULT: Ultimate proved your program to be correct! [2022-11-20 12:03:47,394 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_040ccf68-8ce5-4ba9-a724-4e6b09032d86/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 Result: TRUE