./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a237c0c5e1786112b53bae8b5da7db35eee15483563deacdbe79fcac787d5645 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:44:10,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:44:10,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:44:10,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:44:10,815 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:44:10,816 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:44:10,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:44:10,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:44:10,820 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:44:10,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:44:10,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:44:10,823 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:44:10,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:44:10,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:44:10,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:44:10,827 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:44:10,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:44:10,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:44:10,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:44:10,832 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:44:10,834 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:44:10,835 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:44:10,836 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:44:10,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:44:10,841 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:44:10,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:44:10,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:44:10,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:44:10,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:44:10,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:44:10,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:44:10,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:44:10,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:44:10,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:44:10,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:44:10,849 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:44:10,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:44:10,850 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:44:10,850 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:44:10,851 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:44:10,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:44:10,853 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-23 14:44:10,878 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:44:10,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:44:10,878 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:44:10,879 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:44:10,879 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:44:10,880 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:44:10,880 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:44:10,880 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:44:10,880 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:44:10,881 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:44:10,881 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:44:10,881 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:44:10,881 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:44:10,881 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:44:10,882 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:44:10,882 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:44:10,882 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:44:10,882 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:44:10,883 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:44:10,883 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:44:10,883 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:44:10,884 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:44:10,884 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:44:10,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:44:10,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:44:10,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:44:10,884 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:44:10,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:44:10,885 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:44:10,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:44:10,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:44:10,885 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:44:10,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:44:10,886 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:44:10,886 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:44:10,886 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:44:10,886 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:44:10,887 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:44:10,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:44:10,887 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:44:10,887 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:44:10,887 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_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a237c0c5e1786112b53bae8b5da7db35eee15483563deacdbe79fcac787d5645 [2022-11-23 14:44:11,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:44:11,187 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:44:11,190 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:44:11,191 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:44:11,192 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:44:11,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2022-11-23 14:44:14,459 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:44:14,724 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:44:14,724 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2022-11-23 14:44:14,731 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/data/2a2d884c0/6c8187ba79ee4b4d85022e724108b9fb/FLAGb81424035 [2022-11-23 14:44:14,745 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/data/2a2d884c0/6c8187ba79ee4b4d85022e724108b9fb [2022-11-23 14:44:14,748 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:44:14,749 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:44:14,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:44:14,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:44:14,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:44:14,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:14" (1/1) ... [2022-11-23 14:44:14,756 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7017ea53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:14, skipping insertion in model container [2022-11-23 14:44:14,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:14" (1/1) ... [2022-11-23 14:44:14,764 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:44:14,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:44:15,004 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c[1897,1910] [2022-11-23 14:44:15,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:44:15,025 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:44:15,063 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c[1897,1910] [2022-11-23 14:44:15,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:44:15,078 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:44:15,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:15 WrapperNode [2022-11-23 14:44:15,078 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:44:15,080 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:44:15,080 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:44:15,080 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:44:15,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:15" (1/1) ... [2022-11-23 14:44:15,094 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:15" (1/1) ... [2022-11-23 14:44:15,113 INFO L138 Inliner]: procedures = 17, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 63 [2022-11-23 14:44:15,113 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:44:15,114 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:44:15,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:44:15,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:44:15,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:15" (1/1) ... [2022-11-23 14:44:15,123 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:15" (1/1) ... [2022-11-23 14:44:15,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:15" (1/1) ... [2022-11-23 14:44:15,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:15" (1/1) ... [2022-11-23 14:44:15,132 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:15" (1/1) ... [2022-11-23 14:44:15,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:15" (1/1) ... [2022-11-23 14:44:15,140 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:15" (1/1) ... [2022-11-23 14:44:15,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:15" (1/1) ... [2022-11-23 14:44:15,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:44:15,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:44:15,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:44:15,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:44:15,145 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:15" (1/1) ... [2022-11-23 14:44:15,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:44:15,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:44:15,180 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:44:15,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:44:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:44:15,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:44:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:44:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-11-23 14:44:15,222 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-11-23 14:44:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-23 14:44:15,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:44:15,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:44:15,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:44:15,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:44:15,349 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:44:15,351 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:44:15,605 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:44:15,705 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:44:15,706 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-23 14:44:15,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:44:15 BoogieIcfgContainer [2022-11-23 14:44:15,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:44:15,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:44:15,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:44:15,715 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:44:15,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:44:14" (1/3) ... [2022-11-23 14:44:15,716 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f38d3d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:44:15, skipping insertion in model container [2022-11-23 14:44:15,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:15" (2/3) ... [2022-11-23 14:44:15,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f38d3d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:44:15, skipping insertion in model container [2022-11-23 14:44:15,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:44:15" (3/3) ... [2022-11-23 14:44:15,718 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2022-11-23 14:44:15,747 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:44:15,748 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:44:15,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:44:15,823 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@59219703, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:44:15,824 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:44:15,829 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:44:15,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-23 14:44:15,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:44:15,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:44:15,842 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:44:15,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:44:15,851 INFO L85 PathProgramCache]: Analyzing trace with hash -953830544, now seen corresponding path program 1 times [2022-11-23 14:44:15,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:44:15,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467182863] [2022-11-23 14:44:15,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:44:15,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:44:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:44:16,039 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:44:16,040 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:44:16,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467182863] [2022-11-23 14:44:16,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467182863] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:44:16,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:44:16,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:44:16,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470447943] [2022-11-23 14:44:16,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:44:16,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 14:44:16,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:44:16,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 14:44:16,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:44:16,104 INFO L87 Difference]: Start difference. First operand has 21 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:44:16,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:44:16,174 INFO L93 Difference]: Finished difference Result 40 states and 55 transitions. [2022-11-23 14:44:16,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 14:44:16,179 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-11-23 14:44:16,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:44:16,187 INFO L225 Difference]: With dead ends: 40 [2022-11-23 14:44:16,188 INFO L226 Difference]: Without dead ends: 19 [2022-11-23 14:44:16,191 INFO L412 NwaCegarLoop]: 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 [2022-11-23 14:44:16,196 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:44:16,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:44:16,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-11-23 14:44:16,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-11-23 14:44:16,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:44:16,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2022-11-23 14:44:16,259 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 12 [2022-11-23 14:44:16,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:44:16,260 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2022-11-23 14:44:16,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:44:16,260 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2022-11-23 14:44:16,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 14:44:16,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:44:16,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:44:16,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:44:16,262 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:44:16,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:44:16,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1729423715, now seen corresponding path program 1 times [2022-11-23 14:44:16,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:44:16,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106128096] [2022-11-23 14:44:16,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:44:16,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:44:16,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:44:16,310 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-23 14:44:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-23 14:44:16,410 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-23 14:44:16,411 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-23 14:44:16,413 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 14:44:16,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:44:16,418 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-23 14:44:16,422 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:44:16,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:44:16 BoogieIcfgContainer [2022-11-23 14:44:16,448 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:44:16,448 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:44:16,448 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:44:16,449 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:44:16,449 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:44:15" (3/4) ... [2022-11-23 14:44:16,452 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-23 14:44:16,452 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:44:16,453 INFO L158 Benchmark]: Toolchain (without parser) took 1703.71ms. Allocated memory is still 205.5MB. Free memory was 175.3MB in the beginning and 174.5MB in the end (delta: 771.0kB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2022-11-23 14:44:16,453 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 121.6MB. Free memory is still 61.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:44:16,454 INFO L158 Benchmark]: CACSL2BoogieTranslator took 328.53ms. Allocated memory is still 205.5MB. Free memory was 175.3MB in the beginning and 164.4MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-23 14:44:16,454 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.49ms. Allocated memory is still 205.5MB. Free memory was 164.4MB in the beginning and 162.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:44:16,455 INFO L158 Benchmark]: Boogie Preprocessor took 29.63ms. Allocated memory is still 205.5MB. Free memory was 162.7MB in the beginning and 161.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:44:16,456 INFO L158 Benchmark]: RCFGBuilder took 564.51ms. Allocated memory is still 205.5MB. Free memory was 161.2MB in the beginning and 143.5MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-23 14:44:16,456 INFO L158 Benchmark]: TraceAbstraction took 736.60ms. Allocated memory is still 205.5MB. Free memory was 142.9MB in the beginning and 175.5MB in the end (delta: -32.7MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. [2022-11-23 14:44:16,457 INFO L158 Benchmark]: Witness Printer took 3.96ms. Allocated memory is still 205.5MB. Free memory was 175.5MB in the beginning and 174.5MB in the end (delta: 959.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:44:16,460 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 121.6MB. Free memory is still 61.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 328.53ms. Allocated memory is still 205.5MB. Free memory was 175.3MB in the beginning and 164.4MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.49ms. Allocated memory is still 205.5MB. Free memory was 164.4MB in the beginning and 162.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.63ms. Allocated memory is still 205.5MB. Free memory was 162.7MB in the beginning and 161.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 564.51ms. Allocated memory is still 205.5MB. Free memory was 161.2MB in the beginning and 143.5MB in the end (delta: 17.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 736.60ms. Allocated memory is still 205.5MB. Free memory was 142.9MB in the beginning and 175.5MB in the end (delta: -32.7MB). Peak memory consumption was 32.9MB. Max. memory is 16.1GB. * Witness Printer took 3.96ms. Allocated memory is still 205.5MB. Free memory was 175.5MB in the beginning and 174.5MB in the end (delta: 959.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 81]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 80, overapproximation of someUnaryFLOAToperation at line 74. Possible FailurePath: [L74] float x = -0.0f; [L75] float y = 0.0f; [L77] CALL, EXPR fmax_float(x, y) [L45] CALL, EXPR __fpclassify_float(x) VAL [unknown-#in~x-unknown=4286578696] [L22] __uint32_t w; VAL [unknown-#in~x-unknown=4286578696, x=4286578696] [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (w) = gf_u.word [L30] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L32-L33] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L35-L36] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L38] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L41] return 0; [L45] RET, EXPR __fpclassify_float(x) VAL [__fpclassify_float(x)=0, unknown-#in~x-unknown=4286578696, unknown-#in~y-unknown=0, x=4286578696, y=0] [L45] COND TRUE __fpclassify_float(x) == 0 [L46] return y; VAL [\result=0, unknown-#in~x-unknown=4286578696, unknown-#in~y-unknown=0, x=4286578696, y=0] [L77] RET, EXPR fmax_float(x, y) [L77] float res = fmax_float(x, y); [L80] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=0, res == 0.0f && __signbit_float(res) == 0=0, x=4286578696, y=0] [L80] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L81] reach_error() VAL [res=0, x=4286578696, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 18 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 2, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 11 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-23 14:44:16,495 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a237c0c5e1786112b53bae8b5da7db35eee15483563deacdbe79fcac787d5645 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 14:44:19,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:44:19,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:44:19,102 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:44:19,103 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:44:19,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:44:19,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:44:19,112 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:44:19,116 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:44:19,118 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:44:19,119 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:44:19,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:44:19,124 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:44:19,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:44:19,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:44:19,133 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:44:19,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:44:19,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:44:19,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:44:19,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:44:19,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:44:19,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:44:19,151 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:44:19,152 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:44:19,155 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:44:19,155 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:44:19,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:44:19,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:44:19,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:44:19,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:44:19,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:44:19,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:44:19,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:44:19,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:44:19,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:44:19,173 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:44:19,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:44:19,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:44:19,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:44:19,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:44:19,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:44:19,181 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-23 14:44:19,221 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:44:19,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:44:19,223 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:44:19,223 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:44:19,224 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:44:19,224 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:44:19,224 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:44:19,224 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:44:19,224 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:44:19,225 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:44:19,225 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:44:19,225 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:44:19,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:44:19,226 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-23 14:44:19,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-23 14:44:19,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:44:19,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:44:19,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:44:19,227 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:44:19,227 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-23 14:44:19,227 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-23 14:44:19,228 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-23 14:44:19,228 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-23 14:44:19,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:44:19,228 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:44:19,228 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:44:19,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:44:19,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 14:44:19,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:44:19,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:44:19,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:44:19,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:44:19,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:44:19,230 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-23 14:44:19,231 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-23 14:44:19,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:44:19,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:44:19,231 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 14:44:19,231 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_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a237c0c5e1786112b53bae8b5da7db35eee15483563deacdbe79fcac787d5645 [2022-11-23 14:44:19,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:44:19,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:44:19,643 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:44:19,644 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:44:19,645 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:44:19,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2022-11-23 14:44:22,875 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:44:23,080 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:44:23,081 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c [2022-11-23 14:44:23,087 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/data/7bf9c7502/74c5c4fdcb234a11962214f0726b282f/FLAGa1b770569 [2022-11-23 14:44:23,101 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/data/7bf9c7502/74c5c4fdcb234a11962214f0726b282f [2022-11-23 14:44:23,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:44:23,105 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:44:23,112 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:44:23,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:44:23,116 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:44:23,117 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:23" (1/1) ... [2022-11-23 14:44:23,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40cad764 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:23, skipping insertion in model container [2022-11-23 14:44:23,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:44:23" (1/1) ... [2022-11-23 14:44:23,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:44:23,151 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:44:23,309 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c[1897,1910] [2022-11-23 14:44:23,313 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:44:23,327 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:44:23,350 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/sv-benchmarks/c/float-newlib/float_req_bl_1252a.c[1897,1910] [2022-11-23 14:44:23,351 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:44:23,367 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:44:23,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:23 WrapperNode [2022-11-23 14:44:23,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:44:23,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:44:23,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:44:23,370 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:44:23,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:23" (1/1) ... [2022-11-23 14:44:23,388 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:23" (1/1) ... [2022-11-23 14:44:23,414 INFO L138 Inliner]: procedures = 20, calls = 19, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 61 [2022-11-23 14:44:23,414 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:44:23,415 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:44:23,415 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:44:23,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:44:23,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:23" (1/1) ... [2022-11-23 14:44:23,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:23" (1/1) ... [2022-11-23 14:44:23,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:23" (1/1) ... [2022-11-23 14:44:23,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:23" (1/1) ... [2022-11-23 14:44:23,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:23" (1/1) ... [2022-11-23 14:44:23,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:23" (1/1) ... [2022-11-23 14:44:23,476 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:23" (1/1) ... [2022-11-23 14:44:23,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:23" (1/1) ... [2022-11-23 14:44:23,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:44:23,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:44:23,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:44:23,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:44:23,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:23" (1/1) ... [2022-11-23 14:44:23,502 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:44:23,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:44:23,530 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:44:23,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:44:23,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:44:23,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-23 14:44:23,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:44:23,572 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2022-11-23 14:44:23,572 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2022-11-23 14:44:23,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-23 14:44:23,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:44:23,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:44:23,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-11-23 14:44:23,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:44:23,703 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:44:23,713 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:44:24,003 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:44:24,008 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:44:24,022 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-23 14:44:24,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:44:24 BoogieIcfgContainer [2022-11-23 14:44:24,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:44:24,026 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:44:24,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:44:24,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:44:24,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:44:23" (1/3) ... [2022-11-23 14:44:24,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ba6e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:44:24, skipping insertion in model container [2022-11-23 14:44:24,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:44:23" (2/3) ... [2022-11-23 14:44:24,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62ba6e2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:44:24, skipping insertion in model container [2022-11-23 14:44:24,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:44:24" (3/3) ... [2022-11-23 14:44:24,032 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2022-11-23 14:44:24,064 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:44:24,064 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:44:24,113 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:44:24,120 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6a1e13f8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:44:24,120 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:44:24,124 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:44:24,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-23 14:44:24,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:44:24,132 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:44:24,133 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:44:24,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:44:24,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1229941712, now seen corresponding path program 1 times [2022-11-23 14:44:24,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:44:24,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [480134216] [2022-11-23 14:44:24,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:44:24,159 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:44:24,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:44:24,168 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:44:24,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-23 14:44:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:44:24,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-23 14:44:24,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:44:24,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:44:24,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:44:24,293 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:44:24,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [480134216] [2022-11-23 14:44:24,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [480134216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:44:24,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:44:24,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:44:24,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477033066] [2022-11-23 14:44:24,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:44:24,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-23 14:44:24,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:44:24,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-23 14:44:24,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:44:24,331 INFO L87 Difference]: Start difference. First operand has 27 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 23 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:44:24,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:44:24,350 INFO L93 Difference]: Finished difference Result 51 states and 76 transitions. [2022-11-23 14:44:24,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-23 14:44:24,352 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2022-11-23 14:44:24,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:44:24,357 INFO L225 Difference]: With dead ends: 51 [2022-11-23 14:44:24,358 INFO L226 Difference]: Without dead ends: 24 [2022-11-23 14:44:24,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-23 14:44:24,363 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:44:24,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:44:24,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-11-23 14:44:24,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-11-23 14:44:24,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:44:24,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 31 transitions. [2022-11-23 14:44:24,396 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 31 transitions. Word has length 13 [2022-11-23 14:44:24,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:44:24,396 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 31 transitions. [2022-11-23 14:44:24,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:44:24,397 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 31 transitions. [2022-11-23 14:44:24,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-23 14:44:24,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:44:24,398 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:44:24,414 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-23 14:44:24,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:44:24,611 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:44:24,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:44:24,612 INFO L85 PathProgramCache]: Analyzing trace with hash -2003061117, now seen corresponding path program 1 times [2022-11-23 14:44:24,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:44:24,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [983987414] [2022-11-23 14:44:24,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:44:24,613 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:44:24,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:44:24,615 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:44:24,652 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-23 14:44:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:44:24,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:44:24,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:44:24,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:44:24,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:44:24,773 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:44:24,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [983987414] [2022-11-23 14:44:24,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [983987414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:44:24,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:44:24,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:44:24,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608901497] [2022-11-23 14:44:24,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:44:24,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:44:24,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:44:24,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:44:24,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:44:24,778 INFO L87 Difference]: Start difference. First operand 24 states and 31 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:44:24,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:44:24,817 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2022-11-23 14:44:24,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:44:24,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-11-23 14:44:24,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:44:24,821 INFO L225 Difference]: With dead ends: 36 [2022-11-23 14:44:24,821 INFO L226 Difference]: Without dead ends: 27 [2022-11-23 14:44:24,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:44:24,823 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 0 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:44:24,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:44:24,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-23 14:44:24,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-23 14:44:24,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-23 14:44:24,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2022-11-23 14:44:24,832 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 14 [2022-11-23 14:44:24,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:44:24,832 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2022-11-23 14:44:24,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:44:24,833 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2022-11-23 14:44:24,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-23 14:44:24,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:44:24,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:44:24,851 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:44:25,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:44:25,046 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:44:25,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:44:25,047 INFO L85 PathProgramCache]: Analyzing trace with hash 579011981, now seen corresponding path program 1 times [2022-11-23 14:44:25,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:44:25,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145516846] [2022-11-23 14:44:25,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:44:25,048 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:44:25,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:44:25,050 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:44:25,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-23 14:44:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:44:25,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 14:44:25,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:44:25,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 14:44:25,270 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:44:25,270 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:44:25,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [145516846] [2022-11-23 14:44:25,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [145516846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:44:25,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:44:25,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:44:25,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236873980] [2022-11-23 14:44:25,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:44:25,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 14:44:25,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:44:25,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 14:44:25,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:44:25,273 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:44:25,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:44:25,609 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2022-11-23 14:44:25,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:44:25,610 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-11-23 14:44:25,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:44:25,611 INFO L225 Difference]: With dead ends: 49 [2022-11-23 14:44:25,611 INFO L226 Difference]: Without dead ends: 26 [2022-11-23 14:44:25,612 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:44:25,613 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 37 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:44:25,614 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 62 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:44:25,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-23 14:44:25,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-23 14:44:25,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 22 states have internal predecessors, (27), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 14:44:25,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2022-11-23 14:44:25,620 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 15 [2022-11-23 14:44:25,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:44:25,621 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2022-11-23 14:44:25,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-23 14:44:25,621 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2022-11-23 14:44:25,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-23 14:44:25,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:44:25,623 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:44:25,646 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-11-23 14:44:25,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:44:25,846 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:44:25,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:44:25,847 INFO L85 PathProgramCache]: Analyzing trace with hash 800680882, now seen corresponding path program 1 times [2022-11-23 14:44:25,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:44:25,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1023965150] [2022-11-23 14:44:25,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:44:25,848 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:44:25,848 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:44:25,849 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:44:25,855 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-23 14:44:25,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:44:25,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:44:25,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:44:26,009 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 14:44:26,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:44:26,009 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:44:26,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1023965150] [2022-11-23 14:44:26,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1023965150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:44:26,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:44:26,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:44:26,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393865366] [2022-11-23 14:44:26,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:44:26,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:44:26,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:44:26,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:44:26,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:44:26,012 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 14:44:26,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:44:26,066 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2022-11-23 14:44:26,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:44:26,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-23 14:44:26,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:44:26,067 INFO L225 Difference]: With dead ends: 36 [2022-11-23 14:44:26,067 INFO L226 Difference]: Without dead ends: 27 [2022-11-23 14:44:26,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:44:26,069 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:44:26,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 78 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:44:26,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-23 14:44:26,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-11-23 14:44:26,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 22 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 14:44:26,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2022-11-23 14:44:26,075 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 22 [2022-11-23 14:44:26,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:44:26,075 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2022-11-23 14:44:26,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 14:44:26,076 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2022-11-23 14:44:26,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-23 14:44:26,077 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:44:26,077 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:44:26,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:44:26,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:44:26,290 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:44:26,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:44:26,291 INFO L85 PathProgramCache]: Analyzing trace with hash 802527924, now seen corresponding path program 1 times [2022-11-23 14:44:26,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:44:26,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295638893] [2022-11-23 14:44:26,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:44:26,292 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:44:26,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:44:26,294 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:44:26,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-23 14:44:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:44:26,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-23 14:44:26,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:44:26,473 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:44:26,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:44:26,474 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:44:26,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295638893] [2022-11-23 14:44:26,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295638893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:44:26,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:44:26,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-23 14:44:26,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018402583] [2022-11-23 14:44:26,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:44:26,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-23 14:44:26,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:44:26,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-23 14:44:26,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:44:26,477 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 14:44:26,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:44:26,591 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2022-11-23 14:44:26,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:44:26,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2022-11-23 14:44:26,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:44:26,594 INFO L225 Difference]: With dead ends: 39 [2022-11-23 14:44:26,594 INFO L226 Difference]: Without dead ends: 36 [2022-11-23 14:44:26,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:44:26,595 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 34 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:44:26,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 80 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-23 14:44:26,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-23 14:44:26,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 29. [2022-11-23 14:44:26,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.25) internal successors, (30), 24 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-23 14:44:26,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-11-23 14:44:26,601 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 22 [2022-11-23 14:44:26,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:44:26,610 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-11-23 14:44:26,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 14:44:26,610 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-11-23 14:44:26,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-23 14:44:26,611 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:44:26,612 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:44:26,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-23 14:44:26,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:44:26,825 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:44:26,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:44:26,826 INFO L85 PathProgramCache]: Analyzing trace with hash -288314810, now seen corresponding path program 1 times [2022-11-23 14:44:26,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:44:26,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1301140598] [2022-11-23 14:44:26,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:44:26,827 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:44:26,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:44:26,828 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:44:26,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-23 14:44:26,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:44:26,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-23 14:44:26,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:44:27,049 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-23 14:44:27,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:44:27,050 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:44:27,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1301140598] [2022-11-23 14:44:27,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1301140598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:44:27,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:44:27,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 14:44:27,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076774684] [2022-11-23 14:44:27,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:44:27,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 14:44:27,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:44:27,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 14:44:27,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 14:44:27,059 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 14:44:27,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:44:27,391 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2022-11-23 14:44:27,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-23 14:44:27,394 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-11-23 14:44:27,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:44:27,395 INFO L225 Difference]: With dead ends: 38 [2022-11-23 14:44:27,395 INFO L226 Difference]: Without dead ends: 21 [2022-11-23 14:44:27,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-23 14:44:27,397 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 34 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:44:27,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 58 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-23 14:44:27,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-11-23 14:44:27,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-11-23 14:44:27,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-23 14:44:27,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-11-23 14:44:27,401 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 23 [2022-11-23 14:44:27,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:44:27,410 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-11-23 14:44:27,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 14:44:27,410 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-11-23 14:44:27,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-11-23 14:44:27,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:44:27,411 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:44:27,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-23 14:44:27,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:44:27,625 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:44:27,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:44:27,626 INFO L85 PathProgramCache]: Analyzing trace with hash 543069769, now seen corresponding path program 1 times [2022-11-23 14:44:27,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-23 14:44:27,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705151018] [2022-11-23 14:44:27,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:44:27,627 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:44:27,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat [2022-11-23 14:44:27,628 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-23 14:44:27,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-23 14:44:27,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:44:27,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-23 14:44:27,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:44:27,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-23 14:44:27,978 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:44:27,978 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-23 14:44:27,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705151018] [2022-11-23 14:44:27,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705151018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:44:27,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:44:27,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-23 14:44:27,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877054892] [2022-11-23 14:44:27,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:44:27,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-23 14:44:27,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-23 14:44:27,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-23 14:44:27,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-23 14:44:27,981 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 14:44:28,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:44:28,135 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2022-11-23 14:44:28,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-23 14:44:28,136 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2022-11-23 14:44:28,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:44:28,136 INFO L225 Difference]: With dead ends: 21 [2022-11-23 14:44:28,136 INFO L226 Difference]: Without dead ends: 0 [2022-11-23 14:44:28,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-11-23 14:44:28,140 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 29 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:44:28,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 77 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-23 14:44:28,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-23 14:44:28,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-23 14:44:28,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 14:44:28,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-23 14:44:28,142 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2022-11-23 14:44:28,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:44:28,142 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-23 14:44:28,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-23 14:44:28,142 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-23 14:44:28,142 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-23 14:44:28,145 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-23 14:44:28,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-23 14:44:28,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-23 14:44:28,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-23 14:44:28,494 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-23 14:44:28,494 INFO L895 garLoopResultBuilder]: At program point L64(lines 55 65) the Hoare annotation is: (and (= |ULTIMATE.start___signbit_float_~x#1| (_ +zero 8 24)) (= |ULTIMATE.start___signbit_float_#res#1| (_ bv0 32)) (= (fp.neg (_ +zero 8 24)) |ULTIMATE.start_fmax_float_~x#1|) (= |ULTIMATE.start_main_~res~0#1| (_ +zero 8 24)) (= (fp ((_ extract 31 31) |ULTIMATE.start___signbit_float_~w~1#1|) ((_ extract 30 23) |ULTIMATE.start___signbit_float_~w~1#1|) ((_ extract 22 0) |ULTIMATE.start___signbit_float_~w~1#1|)) (_ +zero 8 24)) |ULTIMATE.start_main_#t~short10#1| (= |ULTIMATE.start_fmax_float_#res#1| (_ +zero 8 24)) (= |ULTIMATE.start_fmax_float_~y#1| (_ +zero 8 24))) [2022-11-23 14:44:28,494 INFO L899 garLoopResultBuilder]: For program point L58-1(lines 58 62) no Hoare annotation was computed. [2022-11-23 14:44:28,494 INFO L895 garLoopResultBuilder]: At program point L58-2(lines 58 62) the Hoare annotation is: (and (= |ULTIMATE.start___signbit_float_~x#1| (_ +zero 8 24)) (= (fp.neg (_ +zero 8 24)) |ULTIMATE.start_fmax_float_~x#1|) (= |ULTIMATE.start_main_~res~0#1| (_ +zero 8 24)) |ULTIMATE.start_main_#t~short10#1| (= |ULTIMATE.start_fmax_float_#res#1| (_ +zero 8 24)) (= |ULTIMATE.start_fmax_float_~y#1| (_ +zero 8 24))) [2022-11-23 14:44:28,495 INFO L899 garLoopResultBuilder]: For program point L58-3(lines 58 62) no Hoare annotation was computed. [2022-11-23 14:44:28,495 INFO L902 garLoopResultBuilder]: At program point L85(lines 67 86) the Hoare annotation is: true [2022-11-23 14:44:28,495 INFO L895 garLoopResultBuilder]: At program point L52(lines 44 53) the Hoare annotation is: (and (= (fp.neg (_ +zero 8 24)) |ULTIMATE.start_fmax_float_~x#1|) (= |ULTIMATE.start_fmax_float_#res#1| (_ +zero 8 24)) (= |ULTIMATE.start_fmax_float_~y#1| (_ +zero 8 24))) [2022-11-23 14:44:28,495 INFO L899 garLoopResultBuilder]: For program point L81(line 81) no Hoare annotation was computed. [2022-11-23 14:44:28,495 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-23 14:44:28,495 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-23 14:44:28,495 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-23 14:44:28,495 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 81) no Hoare annotation was computed. [2022-11-23 14:44:28,495 INFO L895 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: (and (= (fp.neg (_ +zero 8 24)) |ULTIMATE.start_fmax_float_~x#1|) (= |ULTIMATE.start_fmax_float_~y#1| (_ +zero 8 24))) [2022-11-23 14:44:28,496 INFO L899 garLoopResultBuilder]: For program point L49-1(lines 49 51) no Hoare annotation was computed. [2022-11-23 14:44:28,496 INFO L899 garLoopResultBuilder]: For program point L80(line 80) no Hoare annotation was computed. [2022-11-23 14:44:28,496 INFO L899 garLoopResultBuilder]: For program point L80-2(lines 80 83) no Hoare annotation was computed. [2022-11-23 14:44:28,496 INFO L895 garLoopResultBuilder]: At program point L45(line 45) the Hoare annotation is: (and (= (fp.neg (_ +zero 8 24)) |ULTIMATE.start_fmax_float_~x#1|) (= |ULTIMATE.start_fmax_float_~y#1| (_ +zero 8 24))) [2022-11-23 14:44:28,496 INFO L899 garLoopResultBuilder]: For program point L45-1(lines 45 47) no Hoare annotation was computed. [2022-11-23 14:44:28,496 INFO L899 garLoopResultBuilder]: For program point __fpclassify_floatFINAL(lines 21 42) no Hoare annotation was computed. [2022-11-23 14:44:28,496 INFO L899 garLoopResultBuilder]: For program point L38(lines 38 41) no Hoare annotation was computed. [2022-11-23 14:44:28,496 INFO L899 garLoopResultBuilder]: For program point L32(lines 32 41) no Hoare annotation was computed. [2022-11-23 14:44:28,497 INFO L899 garLoopResultBuilder]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2022-11-23 14:44:28,497 INFO L895 garLoopResultBuilder]: At program point L24-2(lines 24 28) the Hoare annotation is: (= |__fpclassify_float_#in~x| __fpclassify_float_~x) [2022-11-23 14:44:28,497 INFO L899 garLoopResultBuilder]: For program point L24-3(lines 21 42) no Hoare annotation was computed. [2022-11-23 14:44:28,497 INFO L902 garLoopResultBuilder]: At program point __fpclassify_floatENTRY(lines 21 42) the Hoare annotation is: true [2022-11-23 14:44:28,497 INFO L899 garLoopResultBuilder]: For program point __fpclassify_floatEXIT(lines 21 42) no Hoare annotation was computed. [2022-11-23 14:44:28,497 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 41) no Hoare annotation was computed. [2022-11-23 14:44:28,500 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2022-11-23 14:44:28,507 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-23 14:44:28,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 02:44:28 BoogieIcfgContainer [2022-11-23 14:44:28,522 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-23 14:44:28,523 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-23 14:44:28,523 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-23 14:44:28,523 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-23 14:44:28,523 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:44:24" (3/4) ... [2022-11-23 14:44:28,526 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-23 14:44:28,533 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_float [2022-11-23 14:44:28,536 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2022-11-23 14:44:28,537 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2022-11-23 14:44:28,537 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-23 14:44:28,537 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-23 14:44:28,564 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x && \result == ~Pluszero~LONGDOUBLE()) && y == ~Pluszero~LONGDOUBLE() [2022-11-23 14:44:28,566 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((x == ~Pluszero~LONGDOUBLE() && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && \result == ~Pluszero~LONGDOUBLE()) && y == ~Pluszero~LONGDOUBLE() [2022-11-23 14:44:28,566 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((x == ~Pluszero~LONGDOUBLE() && \result == 0bv32) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && \result == ~Pluszero~LONGDOUBLE()) && y == ~Pluszero~LONGDOUBLE() [2022-11-23 14:44:28,594 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/witness.graphml [2022-11-23 14:44:28,594 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-23 14:44:28,594 INFO L158 Benchmark]: Toolchain (without parser) took 5489.14ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 62.8MB in the beginning and 79.1MB in the end (delta: -16.3MB). Peak memory consumption was 43.3MB. Max. memory is 16.1GB. [2022-11-23 14:44:28,595 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 62.9MB. Free memory is still 41.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:44:28,595 INFO L158 Benchmark]: CACSL2BoogieTranslator took 256.13ms. Allocated memory is still 83.9MB. Free memory was 62.5MB in the beginning and 51.2MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-23 14:44:28,596 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.26ms. Allocated memory is still 83.9MB. Free memory was 51.2MB in the beginning and 49.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-23 14:44:28,596 INFO L158 Benchmark]: Boogie Preprocessor took 73.88ms. Allocated memory is still 83.9MB. Free memory was 49.6MB in the beginning and 47.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-23 14:44:28,596 INFO L158 Benchmark]: RCFGBuilder took 534.65ms. Allocated memory is still 83.9MB. Free memory was 47.9MB in the beginning and 55.8MB in the end (delta: -7.8MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. [2022-11-23 14:44:28,597 INFO L158 Benchmark]: TraceAbstraction took 4496.24ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 55.0MB in the beginning and 42.2MB in the end (delta: 12.8MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. [2022-11-23 14:44:28,597 INFO L158 Benchmark]: Witness Printer took 71.06ms. Allocated memory is still 100.7MB. Free memory was 42.2MB in the beginning and 79.1MB in the end (delta: -36.9MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. [2022-11-23 14:44:28,600 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 62.9MB. Free memory is still 41.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 256.13ms. Allocated memory is still 83.9MB. Free memory was 62.5MB in the beginning and 51.2MB in the end (delta: 11.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.26ms. Allocated memory is still 83.9MB. Free memory was 51.2MB in the beginning and 49.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.88ms. Allocated memory is still 83.9MB. Free memory was 49.6MB in the beginning and 47.9MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 534.65ms. Allocated memory is still 83.9MB. Free memory was 47.9MB in the beginning and 55.8MB in the end (delta: -7.8MB). Peak memory consumption was 8.3MB. Max. memory is 16.1GB. * TraceAbstraction took 4496.24ms. Allocated memory was 83.9MB in the beginning and 100.7MB in the end (delta: 16.8MB). Free memory was 55.0MB in the beginning and 42.2MB in the end (delta: 12.8MB). Peak memory consumption was 30.7MB. Max. memory is 16.1GB. * Witness Printer took 71.06ms. Allocated memory is still 100.7MB. Free memory was 42.2MB in the beginning and 79.1MB in the end (delta: -36.9MB). Peak memory consumption was 4.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 81]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.4s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 137 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 134 mSDsluCounter, 470 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 303 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 166 IncrementalHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 167 mSDtfsCounter, 166 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=5, InterpolantAutomatonStates: 36, 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, 7 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 21 NumberOfFragments, 80 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 44 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 135 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 128 ConstructedInterpolants, 6 QuantifiedInterpolants, 351 SizeOfPredicates, 34 NumberOfNonLiveVariables, 485 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 24/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 67]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 55]: Loop Invariant Derived loop invariant: ((((((x == ~Pluszero~LONGDOUBLE() && \result == 0bv32) && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~Pluszero~LONGDOUBLE()) && ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && \result == ~Pluszero~LONGDOUBLE()) && y == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: ((((x == ~Pluszero~LONGDOUBLE() && ~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x) && res == ~Pluszero~LONGDOUBLE()) && aux-res == 0.0f && __signbit_float(res) == 0-aux) && \result == ~Pluszero~LONGDOUBLE()) && y == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: (~fp.neg~FLOAT(~Pluszero~LONGDOUBLE()) == x && \result == ~Pluszero~LONGDOUBLE()) && y == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: unknown-#in~x-unknown == x RESULT: Ultimate proved your program to be correct! [2022-11-23 14:44:28,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_05887668-7b4f-41f5-9de3-9bfae332c761/bin/utaipan-Q6hlc19bkW/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