./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G --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 358b07b46b4639b5c555cb2780810d0868bad1e2d0b3519866cd72c195065fc2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:18:13,612 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:18:13,615 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:18:13,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:18:13,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:18:13,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:18:13,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:18:13,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:18:13,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:18:13,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:18:13,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:18:13,691 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:18:13,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:18:13,698 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:18:13,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:18:13,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:18:13,706 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:18:13,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:18:13,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:18:13,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:18:13,727 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:18:13,734 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:18:13,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:18:13,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:18:13,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:18:13,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:18:13,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:18:13,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:18:13,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:18:13,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:18:13,746 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:18:13,747 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:18:13,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:18:13,749 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:18:13,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:18:13,751 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:18:13,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:18:13,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:18:13,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:18:13,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:18:13,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:18:13,756 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:18:13,794 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:18:13,794 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:18:13,795 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:18:13,795 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:18:13,796 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:18:13,796 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:18:13,797 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:18:13,797 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:18:13,797 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:18:13,797 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:18:13,797 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:18:13,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:18:13,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:18:13,798 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:18:13,798 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:18:13,798 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:18:13,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:18:13,799 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:18:13,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:18:13,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:18:13,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:18:13,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:18:13,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:18:13,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:18:13,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:18:13,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:18:13,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:18:13,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:18:13,801 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:18:13,801 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:18:13,802 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:18:13,802 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:18:13,802 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_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 358b07b46b4639b5c555cb2780810d0868bad1e2d0b3519866cd72c195065fc2 [2021-11-23 12:18:14,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:18:14,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:18:14,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:18:14,146 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:18:14,147 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:18:14,149 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2021-11-23 12:18:14,268 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/data/941c9cecb/7c162509e85b479b8e6026479366f505/FLAG617e81add [2021-11-23 12:18:14,816 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:18:14,816 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2021-11-23 12:18:14,823 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/data/941c9cecb/7c162509e85b479b8e6026479366f505/FLAG617e81add [2021-11-23 12:18:15,141 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/data/941c9cecb/7c162509e85b479b8e6026479366f505 [2021-11-23 12:18:15,144 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:18:15,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:18:15,152 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:18:15,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:18:15,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:18:15,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:18:15" (1/1) ... [2021-11-23 12:18:15,159 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53aee3ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:15, skipping insertion in model container [2021-11-23 12:18:15,159 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:18:15" (1/1) ... [2021-11-23 12:18:15,168 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:18:15,193 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:18:15,368 WARN L230 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_57398b0e-070a-46fc-aadb-eb203d8ee155/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2021-11-23 12:18:15,371 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:18:15,381 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:18:15,409 WARN L230 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_57398b0e-070a-46fc-aadb-eb203d8ee155/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2021-11-23 12:18:15,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:18:15,433 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:18:15,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:15 WrapperNode [2021-11-23 12:18:15,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:18:15,435 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:18:15,436 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:18:15,436 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:18:15,444 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:15" (1/1) ... [2021-11-23 12:18:15,467 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:15" (1/1) ... [2021-11-23 12:18:15,492 INFO L137 Inliner]: procedures = 18, calls = 16, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 112 [2021-11-23 12:18:15,493 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:18:15,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:18:15,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:18:15,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:18:15,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:15" (1/1) ... [2021-11-23 12:18:15,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:15" (1/1) ... [2021-11-23 12:18:15,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:15" (1/1) ... [2021-11-23 12:18:15,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:15" (1/1) ... [2021-11-23 12:18:15,528 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:15" (1/1) ... [2021-11-23 12:18:15,539 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:15" (1/1) ... [2021-11-23 12:18:15,542 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:15" (1/1) ... [2021-11-23 12:18:15,554 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:18:15,555 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:18:15,555 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:18:15,555 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:18:15,559 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:15" (1/1) ... [2021-11-23 12:18:15,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:18:15,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:18:15,601 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:18:15,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:18:15,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:18:15,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:18:15,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 12:18:15,652 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-23 12:18:15,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:18:15,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:18:15,653 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 12:18:15,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 12:18:15,764 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:18:15,767 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:18:16,039 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:18:16,046 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:18:16,046 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 12:18:16,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:18:16 BoogieIcfgContainer [2021-11-23 12:18:16,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:18:16,051 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:18:16,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:18:16,071 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:18:16,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:18:15" (1/3) ... [2021-11-23 12:18:16,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5edb0e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:18:16, skipping insertion in model container [2021-11-23 12:18:16,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:15" (2/3) ... [2021-11-23 12:18:16,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5edb0e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:18:16, skipping insertion in model container [2021-11-23 12:18:16,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:18:16" (3/3) ... [2021-11-23 12:18:16,075 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2021-11-23 12:18:16,081 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:18:16,081 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 12:18:16,197 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:18:16,205 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 12:18:16,219 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 12:18:16,250 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:18:16,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 12:18:16,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:18:16,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:18:16,259 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:18:16,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:18:16,274 INFO L85 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2021-11-23 12:18:16,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:18:16,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94129129] [2021-11-23 12:18:16,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:18:16,294 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:18:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:18:16,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:18:16,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:18:16,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94129129] [2021-11-23 12:18:16,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94129129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:18:16,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:18:16,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:18:16,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937476171] [2021-11-23 12:18:16,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:18:16,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 12:18:16,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:18:16,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 12:18:16,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:18:16,490 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:18:16,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:18:16,510 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2021-11-23 12:18:16,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 12:18:16,512 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 12:18:16,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:18:16,523 INFO L225 Difference]: With dead ends: 54 [2021-11-23 12:18:16,523 INFO L226 Difference]: Without dead ends: 25 [2021-11-23 12:18:16,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:18:16,531 INFO L933 BasicCegarLoop]: 38 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, 38 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 [2021-11-23 12:18:16,532 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:18:16,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-23 12:18:16,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-23 12:18:16,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 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) [2021-11-23 12:18:16,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2021-11-23 12:18:16,576 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2021-11-23 12:18:16,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:18:16,576 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2021-11-23 12:18:16,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:18:16,578 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2021-11-23 12:18:16,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 12:18:16,579 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:18:16,579 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:18:16,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:18:16,580 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:18:16,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:18:16,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2021-11-23 12:18:16,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:18:16,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642668363] [2021-11-23 12:18:16,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:18:16,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:18:16,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:18:16,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:18:16,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:18:16,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642668363] [2021-11-23 12:18:16,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642668363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:18:16,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:18:16,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:18:16,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724099166] [2021-11-23 12:18:16,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:18:16,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:18:16,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:18:16,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:18:16,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:18:16,713 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:18:16,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:18:16,790 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2021-11-23 12:18:16,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:18:16,793 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 12:18:16,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:18:16,795 INFO L225 Difference]: With dead ends: 41 [2021-11-23 12:18:16,795 INFO L226 Difference]: Without dead ends: 36 [2021-11-23 12:18:16,796 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:18:16,799 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 11 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:18:16,803 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 91 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:18:16,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-11-23 12:18:16,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2021-11-23 12:18:16,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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) [2021-11-23 12:18:16,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-11-23 12:18:16,811 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2021-11-23 12:18:16,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:18:16,815 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-11-23 12:18:16,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:18:16,816 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-11-23 12:18:16,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 12:18:16,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:18:16,817 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:18:16,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:18:16,818 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:18:16,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:18:16,819 INFO L85 PathProgramCache]: Analyzing trace with hash 502183504, now seen corresponding path program 1 times [2021-11-23 12:18:16,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:18:16,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367660478] [2021-11-23 12:18:16,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:18:16,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:18:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:18:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:18:16,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:18:16,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367660478] [2021-11-23 12:18:16,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367660478] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:18:16,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:18:16,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:18:16,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977137064] [2021-11-23 12:18:16,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:18:16,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:18:16,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:18:16,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:18:16,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:18:16,907 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:18:16,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:18:16,984 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-11-23 12:18:16,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:18:16,985 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-23 12:18:16,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:18:16,986 INFO L225 Difference]: With dead ends: 43 [2021-11-23 12:18:16,986 INFO L226 Difference]: Without dead ends: 38 [2021-11-23 12:18:16,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:18:16,988 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 11 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 105 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 [2021-11-23 12:18:16,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 105 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:18:16,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-23 12:18:16,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-11-23 12:18:16,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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) [2021-11-23 12:18:16,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-11-23 12:18:16,996 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 12 [2021-11-23 12:18:16,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:18:16,996 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-11-23 12:18:16,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:18:16,997 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-11-23 12:18:16,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-23 12:18:16,997 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:18:16,998 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:18:16,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 12:18:16,998 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:18:16,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:18:16,999 INFO L85 PathProgramCache]: Analyzing trace with hash -1951251627, now seen corresponding path program 1 times [2021-11-23 12:18:16,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:18:17,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336753417] [2021-11-23 12:18:17,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:18:17,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:18:17,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:18:17,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:18:17,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:18:17,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336753417] [2021-11-23 12:18:17,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336753417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:18:17,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:18:17,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:18:17,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77090892] [2021-11-23 12:18:17,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:18:17,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:18:17,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:18:17,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:18:17,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:18:17,056 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:18:17,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:18:17,125 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-11-23 12:18:17,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:18:17,126 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-11-23 12:18:17,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:18:17,127 INFO L225 Difference]: With dead ends: 43 [2021-11-23 12:18:17,127 INFO L226 Difference]: Without dead ends: 38 [2021-11-23 12:18:17,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:18:17,130 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 11 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 105 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 [2021-11-23 12:18:17,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 105 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:18:17,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-23 12:18:17,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-11-23 12:18:17,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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) [2021-11-23 12:18:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-11-23 12:18:17,138 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 13 [2021-11-23 12:18:17,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:18:17,139 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-11-23 12:18:17,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:18:17,139 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-11-23 12:18:17,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 12:18:17,140 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:18:17,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:18:17,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 12:18:17,141 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:18:17,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:18:17,142 INFO L85 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2021-11-23 12:18:17,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:18:17,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618540235] [2021-11-23 12:18:17,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:18:17,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:18:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:18:17,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:18:17,201 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:18:17,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618540235] [2021-11-23 12:18:17,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618540235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:18:17,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:18:17,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 12:18:17,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811369806] [2021-11-23 12:18:17,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:18:17,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 12:18:17,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:18:17,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 12:18:17,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 12:18:17,204 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:18:17,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:18:17,287 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2021-11-23 12:18:17,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:18:17,288 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 12:18:17,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:18:17,289 INFO L225 Difference]: With dead ends: 43 [2021-11-23 12:18:17,289 INFO L226 Difference]: Without dead ends: 38 [2021-11-23 12:18:17,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 12:18:17,291 INFO L933 BasicCegarLoop]: 44 mSDtfsCounter, 11 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 105 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 [2021-11-23 12:18:17,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 105 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:18:17,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-11-23 12:18:17,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2021-11-23 12:18:17,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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) [2021-11-23 12:18:17,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-11-23 12:18:17,298 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2021-11-23 12:18:17,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:18:17,299 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-11-23 12:18:17,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:18:17,299 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-11-23 12:18:17,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 12:18:17,300 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:18:17,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:18:17,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 12:18:17,301 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:18:17,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:18:17,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2021-11-23 12:18:17,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:18:17,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644390573] [2021-11-23 12:18:17,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:18:17,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:18:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:18:17,365 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:18:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:18:17,435 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:18:17,436 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 12:18:17,437 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 12:18:17,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 12:18:17,443 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-23 12:18:17,446 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 12:18:17,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 12:18:17 BoogieIcfgContainer [2021-11-23 12:18:17,486 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 12:18:17,487 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 12:18:17,487 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 12:18:17,488 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 12:18:17,488 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:18:16" (3/4) ... [2021-11-23 12:18:17,492 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 12:18:17,492 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 12:18:17,493 INFO L158 Benchmark]: Toolchain (without parser) took 2347.19ms. Allocated memory is still 94.4MB. Free memory was 60.8MB in the beginning and 56.6MB in the end (delta: 4.2MB). Peak memory consumption was 6.4MB. Max. memory is 16.1GB. [2021-11-23 12:18:17,493 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 77.6MB. Free memory is still 58.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:18:17,494 INFO L158 Benchmark]: CACSL2BoogieTranslator took 282.48ms. Allocated memory is still 94.4MB. Free memory was 60.6MB in the beginning and 50.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-23 12:18:17,494 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.93ms. Allocated memory is still 94.4MB. Free memory was 50.1MB in the beginning and 48.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:18:17,495 INFO L158 Benchmark]: Boogie Preprocessor took 60.50ms. Allocated memory is still 94.4MB. Free memory was 48.3MB in the beginning and 46.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:18:17,496 INFO L158 Benchmark]: RCFGBuilder took 494.10ms. Allocated memory is still 94.4MB. Free memory was 46.8MB in the beginning and 70.6MB in the end (delta: -23.8MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2021-11-23 12:18:17,496 INFO L158 Benchmark]: TraceAbstraction took 1435.68ms. Allocated memory is still 94.4MB. Free memory was 70.0MB in the beginning and 57.1MB in the end (delta: 13.0MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. [2021-11-23 12:18:17,497 INFO L158 Benchmark]: Witness Printer took 4.79ms. Allocated memory is still 94.4MB. Free memory was 57.1MB in the beginning and 56.6MB in the end (delta: 461.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:18:17,500 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 77.6MB. Free memory is still 58.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 282.48ms. Allocated memory is still 94.4MB. Free memory was 60.6MB in the beginning and 50.2MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.93ms. Allocated memory is still 94.4MB. Free memory was 50.1MB in the beginning and 48.3MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 60.50ms. Allocated memory is still 94.4MB. Free memory was 48.3MB in the beginning and 46.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 494.10ms. Allocated memory is still 94.4MB. Free memory was 46.8MB in the beginning and 70.6MB in the end (delta: -23.8MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1435.68ms. Allocated memory is still 94.4MB. Free memory was 70.0MB in the beginning and 57.1MB in the end (delta: 13.0MB). Peak memory consumption was 15.9MB. Max. memory is 16.1GB. * Witness Printer took 4.79ms. Allocated memory is still 94.4MB. Free memory was 57.1MB in the beginning and 56.6MB in the end (delta: 461.4kB). 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: 74]: 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 18, overapproximation of someBinaryArithmeticDOUBLEoperation at line 69. Possible FailurePath: [L69] double x = 0.0 / 0.0; [L70] double y = 0.0 / 0.0; [L71] CALL, EXPR fmax_double(x, y) [L57] CALL, EXPR __fpclassify_double(x) [L29] __uint32_t msw, lsw; VAL [\old(x)=4294967298, x=4294967298] [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)=4294967298, lsw=4294967297, msw=2146435073, x=4294967298] [L41-L42] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967298, lsw=4294967297, msw=2146435073, x=4294967298] [L44-L45] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967298, lsw=4294967297, msw=2146435073, x=4294967298] [L48-L49] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L52] return 0; VAL [\old(x)=4294967298, \result=0, lsw=4294967297, msw=2146435073, x=4294967298] [L57] RET, EXPR __fpclassify_double(x) [L57] COND TRUE __fpclassify_double(x) == 0 [L58] return y; VAL [\old(x)=4294967298, \old(y)=4294967299, \result=4294967299, x=4294967298, y=4294967299] [L71] RET, EXPR fmax_double(x, y) [L71] double res = fmax_double(x, y); [L73] CALL, EXPR isnan_double(res) [L18] return x != x; VAL [\old(x)=4294967299, \result=0, x=4294967299] [L73] RET, EXPR isnan_double(res) [L73] COND TRUE !isnan_double(res) [L74] reach_error() VAL [res=4294967299, x=4294967298, y=4294967299] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 44 mSDsluCounter, 444 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 238 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 86 IncrementalHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 206 mSDtfsCounter, 86 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 42 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 71 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 [2021-11-23 12:18:17,549 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/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/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G --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 358b07b46b4639b5c555cb2780810d0868bad1e2d0b3519866cd72c195065fc2 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:18:20,146 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:18:20,149 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:18:20,194 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:18:20,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:18:20,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:18:20,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:18:20,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:18:20,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:18:20,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:18:20,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:18:20,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:18:20,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:18:20,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:18:20,227 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:18:20,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:18:20,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:18:20,236 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:18:20,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:18:20,263 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:18:20,265 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:18:20,267 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:18:20,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:18:20,272 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:18:20,284 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:18:20,284 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:18:20,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:18:20,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:18:20,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:18:20,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:18:20,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:18:20,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:18:20,293 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:18:20,293 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:18:20,295 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:18:20,296 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:18:20,297 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:18:20,297 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:18:20,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:18:20,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:18:20,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:18:20,301 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-23 12:18:20,348 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:18:20,348 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:18:20,349 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:18:20,349 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:18:20,350 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:18:20,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:18:20,351 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:18:20,351 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:18:20,351 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:18:20,352 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:18:20,352 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:18:20,352 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:18:20,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:18:20,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:18:20,353 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 12:18:20,353 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 12:18:20,353 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 12:18:20,353 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:18:20,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:18:20,354 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:18:20,354 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:18:20,354 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:18:20,354 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:18:20,354 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:18:20,355 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:18:20,355 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:18:20,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:18:20,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:18:20,359 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-23 12:18:20,359 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 12:18:20,359 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:18:20,360 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:18:20,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:18:20,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:18:20,360 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 12:18:20,361 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_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 358b07b46b4639b5c555cb2780810d0868bad1e2d0b3519866cd72c195065fc2 [2021-11-23 12:18:20,828 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:18:20,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:18:20,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:18:20,857 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:18:20,857 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:18:20,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2021-11-23 12:18:20,933 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/data/a9adc3c83/bb8722106107433682eaa3f47fadd445/FLAGc6e27b2aa [2021-11-23 12:18:21,568 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:18:21,569 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/sv-benchmarks/c/float-newlib/double_req_bl_1250.c [2021-11-23 12:18:21,583 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/data/a9adc3c83/bb8722106107433682eaa3f47fadd445/FLAGc6e27b2aa [2021-11-23 12:18:21,902 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/data/a9adc3c83/bb8722106107433682eaa3f47fadd445 [2021-11-23 12:18:21,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:18:21,908 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:18:21,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:18:21,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:18:21,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:18:21,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:18:21" (1/1) ... [2021-11-23 12:18:21,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b874191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:21, skipping insertion in model container [2021-11-23 12:18:21,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:18:21" (1/1) ... [2021-11-23 12:18:21,929 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:18:21,949 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:18:22,198 WARN L230 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_57398b0e-070a-46fc-aadb-eb203d8ee155/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2021-11-23 12:18:22,201 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:18:22,220 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:18:22,282 WARN L230 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_57398b0e-070a-46fc-aadb-eb203d8ee155/sv-benchmarks/c/float-newlib/double_req_bl_1250.c[1965,1978] [2021-11-23 12:18:22,284 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:18:22,320 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:18:22,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:22 WrapperNode [2021-11-23 12:18:22,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:18:22,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:18:22,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:18:22,324 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:18:22,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:22" (1/1) ... [2021-11-23 12:18:22,355 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:22" (1/1) ... [2021-11-23 12:18:22,381 INFO L137 Inliner]: procedures = 21, calls = 16, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 110 [2021-11-23 12:18:22,381 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:18:22,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:18:22,382 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:18:22,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:18:22,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:22" (1/1) ... [2021-11-23 12:18:22,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:22" (1/1) ... [2021-11-23 12:18:22,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:22" (1/1) ... [2021-11-23 12:18:22,397 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:22" (1/1) ... [2021-11-23 12:18:22,406 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:22" (1/1) ... [2021-11-23 12:18:22,411 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:22" (1/1) ... [2021-11-23 12:18:22,414 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:22" (1/1) ... [2021-11-23 12:18:22,417 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:18:22,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:18:22,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:18:22,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:18:22,420 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:22" (1/1) ... [2021-11-23 12:18:22,428 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:18:22,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:18:22,461 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:18:22,478 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:18:22,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:18:22,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-23 12:18:22,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 12:18:22,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 12:18:22,517 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 12:18:22,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:18:22,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:18:22,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 12:18:22,644 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:18:22,646 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:18:22,963 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:18:22,969 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:18:22,983 INFO L301 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-23 12:18:22,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:18:22 BoogieIcfgContainer [2021-11-23 12:18:22,986 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:18:22,987 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:18:22,988 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:18:22,991 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:18:22,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:18:21" (1/3) ... [2021-11-23 12:18:22,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5732349a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:18:22, skipping insertion in model container [2021-11-23 12:18:23,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:18:22" (2/3) ... [2021-11-23 12:18:23,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5732349a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:18:23, skipping insertion in model container [2021-11-23 12:18:23,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:18:22" (3/3) ... [2021-11-23 12:18:23,025 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1250.c [2021-11-23 12:18:23,031 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:18:23,031 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 12:18:23,109 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:18:23,116 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 12:18:23,116 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 12:18:23,132 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:18:23,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 12:18:23,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:18:23,140 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:18:23,141 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:18:23,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:18:23,147 INFO L85 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2021-11-23 12:18:23,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:18:23,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [670082832] [2021-11-23 12:18:23,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:18:23,162 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:18:23,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:18:23,167 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:18:23,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 12:18:23,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:18:23,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 12:18:23,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:18:23,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:18:23,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:18:23,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:18:23,426 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:18:23,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [670082832] [2021-11-23 12:18:23,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [670082832] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:18:23,429 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:18:23,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 12:18:23,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515564039] [2021-11-23 12:18:23,433 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:18:23,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 12:18:23,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:18:23,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 12:18:23,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:18:23,488 INFO L87 Difference]: Start difference. First operand has 28 states, 26 states have (on average 1.6538461538461537) internal successors, (43), 27 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:18:23,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:18:23,514 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2021-11-23 12:18:23,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 12:18:23,517 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 12:18:23,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:18:23,527 INFO L225 Difference]: With dead ends: 54 [2021-11-23 12:18:23,528 INFO L226 Difference]: Without dead ends: 25 [2021-11-23 12:18:23,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:18:23,539 INFO L933 BasicCegarLoop]: 38 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, 38 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 [2021-11-23 12:18:23,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:18:23,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-11-23 12:18:23,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-11-23 12:18:23,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 24 states have internal predecessors, (35), 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) [2021-11-23 12:18:23,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2021-11-23 12:18:23,590 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2021-11-23 12:18:23,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:18:23,590 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2021-11-23 12:18:23,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:18:23,591 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2021-11-23 12:18:23,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 12:18:23,593 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:18:23,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:18:23,617 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:18:23,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:18:23,817 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:18:23,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:18:23,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2021-11-23 12:18:23,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:18:23,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983800859] [2021-11-23 12:18:23,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:18:23,820 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:18:23,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:18:23,828 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:18:23,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 12:18:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:18:23,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:18:23,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:18:23,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:18:23,992 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:18:24,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:18:24,065 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:18:24,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983800859] [2021-11-23 12:18:24,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983800859] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:18:24,067 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:18:24,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 12:18:24,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375262226] [2021-11-23 12:18:24,069 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:18:24,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:18:24,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:18:24,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:18:24,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:18:24,075 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:18:24,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:18:24,224 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2021-11-23 12:18:24,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:18:24,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 12:18:24,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:18:24,226 INFO L225 Difference]: With dead ends: 52 [2021-11-23 12:18:24,226 INFO L226 Difference]: Without dead ends: 47 [2021-11-23 12:18:24,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:18:24,228 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 33 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:18:24,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 100 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:18:24,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-23 12:18:24,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2021-11-23 12:18:24,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 26 states have internal predecessors, (37), 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) [2021-11-23 12:18:24,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2021-11-23 12:18:24,238 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2021-11-23 12:18:24,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:18:24,238 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2021-11-23 12:18:24,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:18:24,239 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2021-11-23 12:18:24,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-11-23 12:18:24,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:18:24,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:18:24,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 12:18:24,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:18:24,452 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:18:24,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:18:24,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2021-11-23 12:18:24,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:18:24,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [867798612] [2021-11-23 12:18:24,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:18:24,454 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:18:24,454 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:18:24,455 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:18:24,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 12:18:24,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:18:24,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 12:18:24,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:18:24,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:18:24,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:18:25,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:18:25,030 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:18:25,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [867798612] [2021-11-23 12:18:25,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [867798612] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:18:25,031 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:18:25,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-23 12:18:25,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055218794] [2021-11-23 12:18:25,032 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:18:25,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:18:25,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:18:25,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:18:25,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:18:25,034 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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) [2021-11-23 12:18:25,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:18:25,418 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2021-11-23 12:18:25,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:18:25,419 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-11-23 12:18:25,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:18:25,420 INFO L225 Difference]: With dead ends: 36 [2021-11-23 12:18:25,420 INFO L226 Difference]: Without dead ends: 27 [2021-11-23 12:18:25,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-23 12:18:25,423 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 22 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:18:25,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 170 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 1 Unchecked, 0.3s Time] [2021-11-23 12:18:25,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-11-23 12:18:25,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2021-11-23 12:18:25,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.375) internal successors, (33), 24 states have internal predecessors, (33), 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) [2021-11-23 12:18:25,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2021-11-23 12:18:25,430 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2021-11-23 12:18:25,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:18:25,431 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2021-11-23 12:18:25,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 10 states have internal predecessors, (26), 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) [2021-11-23 12:18:25,431 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2021-11-23 12:18:25,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-23 12:18:25,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:18:25,432 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:18:25,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 12:18:25,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:18:25,651 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:18:25,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:18:25,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2021-11-23 12:18:25,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:18:25,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1859383099] [2021-11-23 12:18:25,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:18:25,653 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:18:25,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:18:25,654 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:18:25,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 12:18:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:18:25,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 12:18:25,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:18:25,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:18:25,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:18:25,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:18:25,863 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:18:25,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1859383099] [2021-11-23 12:18:25,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1859383099] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:18:25,864 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:18:25,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 12:18:25,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602261596] [2021-11-23 12:18:25,864 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:18:25,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:18:25,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:18:25,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:18:25,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:18:25,866 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:18:26,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:18:26,038 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2021-11-23 12:18:26,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:18:26,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-23 12:18:26,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:18:26,040 INFO L225 Difference]: With dead ends: 52 [2021-11-23 12:18:26,040 INFO L226 Difference]: Without dead ends: 47 [2021-11-23 12:18:26,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 12:18:26,042 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 24 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:18:26,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 111 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 12:18:26,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-23 12:18:26,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2021-11-23 12:18:26,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.3461538461538463) internal successors, (35), 26 states have internal predecessors, (35), 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) [2021-11-23 12:18:26,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2021-11-23 12:18:26,049 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2021-11-23 12:18:26,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:18:26,050 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2021-11-23 12:18:26,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:18:26,050 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2021-11-23 12:18:26,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-23 12:18:26,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:18:26,056 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:18:26,072 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 12:18:26,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:18:26,256 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:18:26,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:18:26,257 INFO L85 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2021-11-23 12:18:26,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:18:26,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [511365471] [2021-11-23 12:18:26,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:18:26,258 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:18:26,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:18:26,260 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:18:26,262 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 12:18:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:18:26,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-23 12:18:26,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:18:26,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:18:26,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:18:26,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:18:26,941 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:18:26,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [511365471] [2021-11-23 12:18:26,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [511365471] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:18:26,942 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:18:26,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-23 12:18:26,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494012176] [2021-11-23 12:18:26,942 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:18:26,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 12:18:26,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:18:26,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 12:18:26,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-23 12:18:26,950 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:18:27,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:18:27,291 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2021-11-23 12:18:27,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:18:27,292 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-11-23 12:18:27,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:18:27,292 INFO L225 Difference]: With dead ends: 32 [2021-11-23 12:18:27,292 INFO L226 Difference]: Without dead ends: 23 [2021-11-23 12:18:27,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2021-11-23 12:18:27,294 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 21 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 12:18:27,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 170 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 8 Unchecked, 0.2s Time] [2021-11-23 12:18:27,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-11-23 12:18:27,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-11-23 12:18:27,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 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) [2021-11-23 12:18:27,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-11-23 12:18:27,300 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2021-11-23 12:18:27,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:18:27,301 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-11-23 12:18:27,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.8333333333333335) internal successors, (34), 12 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:18:27,301 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-11-23 12:18:27,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-23 12:18:27,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:18:27,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:18:27,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 12:18:27,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:18:27,503 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:18:27,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:18:27,503 INFO L85 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2021-11-23 12:18:27,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:18:27,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652881038] [2021-11-23 12:18:27,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:18:27,504 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:18:27,504 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:18:27,505 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:18:27,507 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 12:18:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:18:27,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-23 12:18:27,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:18:27,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:18:27,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:18:28,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:18:28,034 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:18:28,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652881038] [2021-11-23 12:18:28,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [652881038] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:18:28,035 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:18:28,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-11-23 12:18:28,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857562490] [2021-11-23 12:18:28,035 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:18:28,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 12:18:28,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:18:28,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 12:18:28,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-23 12:18:28,037 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 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) [2021-11-23 12:18:28,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:18:28,227 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-11-23 12:18:28,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 12:18:28,228 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-23 12:18:28,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:18:28,228 INFO L225 Difference]: With dead ends: 23 [2021-11-23 12:18:28,228 INFO L226 Difference]: Without dead ends: 0 [2021-11-23 12:18:28,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-23 12:18:28,230 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 10 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 12:18:28,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 103 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 1 Unchecked, 0.1s Time] [2021-11-23 12:18:28,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-23 12:18:28,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-23 12:18:28,232 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) [2021-11-23 12:18:28,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-23 12:18:28,232 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2021-11-23 12:18:28,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:18:28,233 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-23 12:18:28,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 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) [2021-11-23 12:18:28,233 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-23 12:18:28,233 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-23 12:18:28,235 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 12:18:28,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 12:18:28,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:18:28,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-23 12:18:28,623 INFO L858 garLoopResultBuilder]: For program point L31-1(lines 31 36) no Hoare annotation was computed. [2021-11-23 12:18:28,623 INFO L854 garLoopResultBuilder]: At program point L31-2(lines 31 36) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmax_double_~x#1| |ULTIMATE.start_fmax_double_~x#1|)) (not (fp.eq |ULTIMATE.start_fmax_double_~y#1| |ULTIMATE.start_fmax_double_~y#1|))) [2021-11-23 12:18:28,623 INFO L858 garLoopResultBuilder]: For program point L31-3(lines 28 53) no Hoare annotation was computed. [2021-11-23 12:18:28,624 INFO L858 garLoopResultBuilder]: For program point L31-5(lines 31 36) no Hoare annotation was computed. [2021-11-23 12:18:28,624 INFO L854 garLoopResultBuilder]: At program point L31-6(lines 31 36) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmax_double_~x#1| |ULTIMATE.start_fmax_double_~x#1|)) (not (fp.eq |ULTIMATE.start_fmax_double_~y#1| |ULTIMATE.start_fmax_double_~y#1|))) [2021-11-23 12:18:28,624 INFO L858 garLoopResultBuilder]: For program point L31-7(lines 28 53) no Hoare annotation was computed. [2021-11-23 12:18:28,624 INFO L854 garLoopResultBuilder]: At program point L52(lines 28 53) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmax_double_~x#1| |ULTIMATE.start_fmax_double_~x#1|)) (not (fp.eq |ULTIMATE.start_fmax_double_~y#1| |ULTIMATE.start_fmax_double_~y#1|))) [2021-11-23 12:18:28,624 INFO L854 garLoopResultBuilder]: At program point L52-1(lines 28 53) the Hoare annotation is: (let ((.cse0 (not (fp.eq |ULTIMATE.start_fmax_double_~y#1| |ULTIMATE.start_fmax_double_~y#1|)))) (or (and (not (fp.eq |ULTIMATE.start_fmax_double_~x#1| |ULTIMATE.start_fmax_double_~x#1|)) .cse0) (and .cse0 (not (= |ULTIMATE.start___fpclassify_double_#res#1| (_ bv0 32)))))) [2021-11-23 12:18:28,624 INFO L858 garLoopResultBuilder]: For program point L48(lines 48 52) no Hoare annotation was computed. [2021-11-23 12:18:28,625 INFO L858 garLoopResultBuilder]: For program point L48-1(lines 48 52) no Hoare annotation was computed. [2021-11-23 12:18:28,625 INFO L861 garLoopResultBuilder]: At program point L77(lines 65 78) the Hoare annotation is: true [2021-11-23 12:18:28,625 INFO L858 garLoopResultBuilder]: For program point L44(lines 44 52) no Hoare annotation was computed. [2021-11-23 12:18:28,625 INFO L858 garLoopResultBuilder]: For program point L44-1(lines 44 52) no Hoare annotation was computed. [2021-11-23 12:18:28,625 INFO L858 garLoopResultBuilder]: For program point L73(lines 73 76) no Hoare annotation was computed. [2021-11-23 12:18:28,626 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-11-23 12:18:28,626 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-23 12:18:28,626 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-11-23 12:18:28,626 INFO L858 garLoopResultBuilder]: For program point L57(lines 57 58) no Hoare annotation was computed. [2021-11-23 12:18:28,626 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 74) no Hoare annotation was computed. [2021-11-23 12:18:28,626 INFO L858 garLoopResultBuilder]: For program point L74(line 74) no Hoare annotation was computed. [2021-11-23 12:18:28,626 INFO L858 garLoopResultBuilder]: For program point L41(lines 41 52) no Hoare annotation was computed. [2021-11-23 12:18:28,627 INFO L858 garLoopResultBuilder]: For program point L41-1(lines 41 52) no Hoare annotation was computed. [2021-11-23 12:18:28,627 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-23 12:18:28,627 INFO L858 garLoopResultBuilder]: For program point L62(line 62) no Hoare annotation was computed. [2021-11-23 12:18:28,627 INFO L858 garLoopResultBuilder]: For program point L62-2(line 62) no Hoare annotation was computed. [2021-11-23 12:18:28,627 INFO L854 garLoopResultBuilder]: At program point L62-3(lines 55 63) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmax_double_~y#1| |ULTIMATE.start_fmax_double_~y#1|)) (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 11 53) (_ +zero 11 53)) |ULTIMATE.start_fmax_double_#res#1|))) [2021-11-23 12:18:28,627 INFO L858 garLoopResultBuilder]: For program point L59(lines 59 60) no Hoare annotation was computed. [2021-11-23 12:18:28,628 INFO L854 garLoopResultBuilder]: At program point L18(line 18) the Hoare annotation is: (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res#1|) [2021-11-23 12:18:28,632 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-11-23 12:18:28,633 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 12:18:28,649 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-23 12:18:28,651 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-23 12:18:28,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 12:18:28 BoogieIcfgContainer [2021-11-23 12:18:28,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 12:18:28,653 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 12:18:28,653 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 12:18:28,653 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 12:18:28,654 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:18:22" (3/4) ... [2021-11-23 12:18:28,657 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-23 12:18:28,670 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2021-11-23 12:18:28,671 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-23 12:18:28,671 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-23 12:18:28,672 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-23 12:18:28,700 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~DOUBLE(y, y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) [2021-11-23 12:18:28,701 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: 1bv32 == \result [2021-11-23 12:18:28,702 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y)) || (!~fp.eq~DOUBLE(y, y) && !(\result == 0bv32)) [2021-11-23 12:18:28,719 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/witness.graphml [2021-11-23 12:18:28,720 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 12:18:28,720 INFO L158 Benchmark]: Toolchain (without parser) took 6812.23ms. Allocated memory was 62.9MB in the beginning and 92.3MB in the end (delta: 29.4MB). Free memory was 45.0MB in the beginning and 44.5MB in the end (delta: 540.0kB). Peak memory consumption was 30.9MB. Max. memory is 16.1GB. [2021-11-23 12:18:28,721 INFO L158 Benchmark]: CDTParser took 0.24ms. Allocated memory is still 62.9MB. Free memory is still 43.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:18:28,721 INFO L158 Benchmark]: CACSL2BoogieTranslator took 410.78ms. Allocated memory is still 62.9MB. Free memory was 44.7MB in the beginning and 45.2MB in the end (delta: -468.0kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 12:18:28,722 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.42ms. Allocated memory is still 62.9MB. Free memory was 45.2MB in the beginning and 43.4MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:18:28,722 INFO L158 Benchmark]: Boogie Preprocessor took 35.56ms. Allocated memory is still 62.9MB. Free memory was 43.4MB in the beginning and 41.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:18:28,723 INFO L158 Benchmark]: RCFGBuilder took 567.27ms. Allocated memory is still 62.9MB. Free memory was 41.8MB in the beginning and 29.0MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 12:18:28,723 INFO L158 Benchmark]: TraceAbstraction took 5664.55ms. Allocated memory was 62.9MB in the beginning and 92.3MB in the end (delta: 29.4MB). Free memory was 28.8MB in the beginning and 48.0MB in the end (delta: -19.2MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. [2021-11-23 12:18:28,724 INFO L158 Benchmark]: Witness Printer took 67.16ms. Allocated memory is still 92.3MB. Free memory was 48.0MB in the beginning and 44.5MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-23 12:18:28,726 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24ms. Allocated memory is still 62.9MB. Free memory is still 43.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 410.78ms. Allocated memory is still 62.9MB. Free memory was 44.7MB in the beginning and 45.2MB in the end (delta: -468.0kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.42ms. Allocated memory is still 62.9MB. Free memory was 45.2MB in the beginning and 43.4MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 35.56ms. Allocated memory is still 62.9MB. Free memory was 43.4MB in the beginning and 41.8MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 567.27ms. Allocated memory is still 62.9MB. Free memory was 41.8MB in the beginning and 29.0MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 5664.55ms. Allocated memory was 62.9MB in the beginning and 92.3MB in the end (delta: 29.4MB). Free memory was 28.8MB in the beginning and 48.0MB in the end (delta: -19.2MB). Peak memory consumption was 12.9MB. Max. memory is 16.1GB. * Witness Printer took 67.16ms. Allocated memory is still 92.3MB. Free memory was 48.0MB in the beginning and 44.5MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. 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: 74]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 110 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 110 mSDsluCounter, 692 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 10 IncrementalHoareTripleChecker+Unchecked, 508 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 117 IncrementalHoareTripleChecker+Invalid, 147 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 184 mSDtfsCounter, 117 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 33, 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, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 62 HoareAnnotationTreeSize, 7 FomulaSimplifications, 123 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 538 SizeOfPredicates, 32 NumberOfNonLiveVariables, 325 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y) - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1bv32 == \result - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y) - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (!~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(y, y)) || (!~fp.eq~DOUBLE(y, y) && !(\result == 0bv32)) - InvariantResult [Line: 55]: Loop Invariant [2021-11-23 12:18:28,739 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2021-11-23 12:18:28,739 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: !~fp.eq~DOUBLE(y, y) && (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~DOUBLE(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) - InvariantResult [Line: 65]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-11-23 12:18:28,786 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_57398b0e-070a-46fc-aadb-eb203d8ee155/bin/uautomizer-wIGwrQj20G/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