./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d0cec7ddb8a2645a0ba1656999ba73d1a21b29e3fbe1129f436b67dd30c2f050 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:31:24,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:31:24,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:31:24,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:31:24,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:31:24,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:31:24,066 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:31:24,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:31:24,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:31:24,081 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:31:24,083 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:31:24,085 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:31:24,085 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:31:24,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:31:24,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:31:24,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:31:24,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:31:24,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:31:24,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:31:24,106 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:31:24,108 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:31:24,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:31:24,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:31:24,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:31:24,125 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:31:24,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:31:24,126 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:31:24,128 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:31:24,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:31:24,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:31:24,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:31:24,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:31:24,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:31:24,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:31:24,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:31:24,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:31:24,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:31:24,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:31:24,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:31:24,139 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:31:24,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:31:24,141 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-23 12:31:24,179 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:31:24,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:31:24,180 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:31:24,180 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:31:24,186 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:31:24,186 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:31:24,187 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:31:24,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:31:24,187 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:31:24,187 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 12:31:24,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:31:24,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:31:24,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:31:24,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:31:24,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:31:24,190 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:31:24,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:31:24,191 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:31:24,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:31:24,191 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:31:24,191 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:31:24,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:31:24,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:31:24,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:31:24,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:31:24,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:31:24,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 12:31:24,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 12:31:24,193 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:31:24,195 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:31:24,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:31:24,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:31:24,196 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_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0cec7ddb8a2645a0ba1656999ba73d1a21b29e3fbe1129f436b67dd30c2f050 [2021-11-23 12:31:24,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:31:24,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:31:24,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:31:24,487 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:31:24,488 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:31:24,489 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2021-11-23 12:31:24,585 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/data/02883b029/c5f967625ab4465591c01fbed4cc8a54/FLAGde338f44e [2021-11-23 12:31:25,017 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:31:25,018 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2021-11-23 12:31:25,025 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/data/02883b029/c5f967625ab4465591c01fbed4cc8a54/FLAGde338f44e [2021-11-23 12:31:25,407 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/data/02883b029/c5f967625ab4465591c01fbed4cc8a54 [2021-11-23 12:31:25,410 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:31:25,411 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:31:25,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:31:25,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:31:25,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:31:25,417 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:31:25" (1/1) ... [2021-11-23 12:31:25,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44541723 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25, skipping insertion in model container [2021-11-23 12:31:25,418 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:31:25" (1/1) ... [2021-11-23 12:31:25,424 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:31:25,444 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:31:25,638 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/sv-benchmarks/c/float-newlib/float_req_bl_0930.c[3104,3117] [2021-11-23 12:31:25,641 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:31:25,650 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:31:25,688 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/sv-benchmarks/c/float-newlib/float_req_bl_0930.c[3104,3117] [2021-11-23 12:31:25,689 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:31:25,701 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:31:25,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25 WrapperNode [2021-11-23 12:31:25,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:31:25,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:31:25,704 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:31:25,704 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:31:25,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25" (1/1) ... [2021-11-23 12:31:25,719 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25" (1/1) ... [2021-11-23 12:31:25,749 INFO L137 Inliner]: procedures = 17, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 157 [2021-11-23 12:31:25,750 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:31:25,751 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:31:25,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:31:25,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:31:25,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25" (1/1) ... [2021-11-23 12:31:25,760 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25" (1/1) ... [2021-11-23 12:31:25,764 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25" (1/1) ... [2021-11-23 12:31:25,764 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25" (1/1) ... [2021-11-23 12:31:25,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25" (1/1) ... [2021-11-23 12:31:25,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25" (1/1) ... [2021-11-23 12:31:25,782 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25" (1/1) ... [2021-11-23 12:31:25,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:31:25,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:31:25,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:31:25,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:31:25,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25" (1/1) ... [2021-11-23 12:31:25,798 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:31:25,811 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:31:25,840 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:31:25,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:31:25,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:31:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 12:31:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 12:31:25,877 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-23 12:31:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 12:31:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-23 12:31:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:31:25,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:31:25,878 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 12:31:25,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 12:31:25,959 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:31:25,961 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:31:26,144 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:31:26,150 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:31:26,150 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-23 12:31:26,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:31:26 BoogieIcfgContainer [2021-11-23 12:31:26,153 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:31:26,155 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:31:26,155 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:31:26,158 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:31:26,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:31:25" (1/3) ... [2021-11-23 12:31:26,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7592119a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:31:26, skipping insertion in model container [2021-11-23 12:31:26,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:25" (2/3) ... [2021-11-23 12:31:26,160 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7592119a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:31:26, skipping insertion in model container [2021-11-23 12:31:26,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:31:26" (3/3) ... [2021-11-23 12:31:26,162 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0930.c [2021-11-23 12:31:26,168 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:31:26,168 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 12:31:26,218 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:31:26,225 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 12:31:26,225 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 12:31:26,241 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.6875) internal successors, (54), 33 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:26,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 12:31:26,247 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:26,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:26,248 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:31:26,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:26,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1904085918, now seen corresponding path program 1 times [2021-11-23 12:31:26,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:26,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922170028] [2021-11-23 12:31:26,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:26,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:26,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:26,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:26,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 12:31:26,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922170028] [2021-11-23 12:31:26,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922170028] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:26,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:26,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 12:31:26,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153046107] [2021-11-23 12:31:26,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:26,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 12:31:26,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 12:31:26,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 12:31:26,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:31:26,493 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.6875) internal successors, (54), 33 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:26,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:26,511 INFO L93 Difference]: Finished difference Result 66 states and 106 transitions. [2021-11-23 12:31:26,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 12:31:26,513 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 12:31:26,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:26,521 INFO L225 Difference]: With dead ends: 66 [2021-11-23 12:31:26,521 INFO L226 Difference]: Without dead ends: 31 [2021-11-23 12:31:26,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:31:26,528 INFO L933 BasicCegarLoop]: 45 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, 45 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:26,529 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:31:26,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-23 12:31:26,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-23 12:31:26,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:26,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-11-23 12:31:26,561 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 9 [2021-11-23 12:31:26,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:26,562 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-11-23 12:31:26,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:26,563 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-11-23 12:31:26,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 12:31:26,563 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:26,564 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:26,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 12:31:26,564 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:31:26,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:26,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1484264895, now seen corresponding path program 1 times [2021-11-23 12:31:26,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 12:31:26,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951938590] [2021-11-23 12:31:26,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:26,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 12:31:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:31:26,610 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-23 12:31:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-23 12:31:26,661 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-23 12:31:26,662 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-23 12:31:26,664 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 12:31:26,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 12:31:26,669 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-23 12:31:26,672 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 12:31:26,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 12:31:26 BoogieIcfgContainer [2021-11-23 12:31:26,704 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 12:31:26,705 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 12:31:26,705 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 12:31:26,705 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 12:31:26,706 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:31:26" (3/4) ... [2021-11-23 12:31:26,709 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 12:31:26,709 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 12:31:26,711 INFO L158 Benchmark]: Toolchain (without parser) took 1299.07ms. Allocated memory was 86.0MB in the beginning and 109.1MB in the end (delta: 23.1MB). Free memory was 48.6MB in the beginning and 68.7MB in the end (delta: -20.1MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. [2021-11-23 12:31:26,711 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 86.0MB. Free memory was 65.6MB in the beginning and 65.5MB in the end (delta: 45.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:31:26,712 INFO L158 Benchmark]: CACSL2BoogieTranslator took 288.64ms. Allocated memory was 86.0MB in the beginning and 109.1MB in the end (delta: 23.1MB). Free memory was 48.4MB in the beginning and 82.6MB in the end (delta: -34.2MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. [2021-11-23 12:31:26,713 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.51ms. Allocated memory is still 109.1MB. Free memory was 82.6MB in the beginning and 80.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:31:26,714 INFO L158 Benchmark]: Boogie Preprocessor took 35.57ms. Allocated memory is still 109.1MB. Free memory was 80.5MB in the beginning and 79.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:31:26,714 INFO L158 Benchmark]: RCFGBuilder took 365.85ms. Allocated memory is still 109.1MB. Free memory was 78.8MB in the beginning and 66.0MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 12:31:26,715 INFO L158 Benchmark]: TraceAbstraction took 549.72ms. Allocated memory is still 109.1MB. Free memory was 65.6MB in the beginning and 69.2MB in the end (delta: -3.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:31:26,716 INFO L158 Benchmark]: Witness Printer took 4.68ms. Allocated memory is still 109.1MB. Free memory was 69.2MB in the beginning and 68.7MB in the end (delta: 452.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:31:26,719 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 86.0MB. Free memory was 65.6MB in the beginning and 65.5MB in the end (delta: 45.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 288.64ms. Allocated memory was 86.0MB in the beginning and 109.1MB in the end (delta: 23.1MB). Free memory was 48.4MB in the beginning and 82.6MB in the end (delta: -34.2MB). Peak memory consumption was 5.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.51ms. Allocated memory is still 109.1MB. Free memory was 82.6MB in the beginning and 80.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 35.57ms. Allocated memory is still 109.1MB. Free memory was 80.5MB in the beginning and 79.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 365.85ms. Allocated memory is still 109.1MB. Free memory was 78.8MB in the beginning and 66.0MB in the end (delta: 12.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 549.72ms. Allocated memory is still 109.1MB. Free memory was 65.6MB in the beginning and 69.2MB in the end (delta: -3.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.68ms. Allocated memory is still 109.1MB. Free memory was 69.2MB in the beginning and 68.7MB in the end (delta: 452.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 123]: 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 122, overapproximation of someBinaryArithmeticFLOAToperation at line 34, overapproximation of bitwiseAnd at line 33. Possible FailurePath: [L14-L18] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L20] static const float zero_log = 0.0; VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, zero_log=0] [L118] float x = 1.0f; [L119] CALL, EXPR __ieee754_logf(x) [L23] float hfsq, f, s, z, R, w, t1, t2, dk; [L24] __int32_t k, ix, i, j; VAL [\old(x)=1, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=1, zero_log=0] [L27] ieee_float_shape_type gf_u; [L28] gf_u.value = (x) [L29] EXPR gf_u.word [L29] (ix) = gf_u.word [L32] k = 0 VAL [\old(x)=1, ix=-1, k=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=1, zero_log=0] [L33] COND TRUE ((ix & 0x7fffffff) == 0) [L34] return -two25_log / zero_log; VAL [\old(x)=1, ix=-1, k=0, Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, two25_log=33554432, x=1, zero_log=0] [L119] RET, EXPR __ieee754_logf(x) [L119] float res = __ieee754_logf(x); [L122] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, res=4294967296, res == 0.0f && __signbit_float(res) == 0=0, two25_log=33554432, x=1, zero_log=0] [L122] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L123] reach_error() VAL [Lg1_log=66666668653/100000000000, Lg2_log=10000000149/25000000000, Lg3_log=28571429849/100000000000, Lg4_log=11111099273/50000000000, Lg5_log=1818357259/10000000000, Lg6_log=7656919211/50000000000, Lg7_log=184977483/1250000000, ln2_hi_log=2166056633/3125000000, ln2_lo_log=18116001229/2000000000000000, res=4294967296, two25_log=33554432, x=1, zero_log=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 45 mSDtfsCounter, 0 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=34occurred 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, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 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 [2021-11-23 12:31:26,770 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash d0cec7ddb8a2645a0ba1656999ba73d1a21b29e3fbe1129f436b67dd30c2f050 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 12:31:29,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 12:31:29,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 12:31:29,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 12:31:29,245 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 12:31:29,250 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 12:31:29,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 12:31:29,262 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 12:31:29,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 12:31:29,270 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 12:31:29,271 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 12:31:29,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 12:31:29,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 12:31:29,274 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 12:31:29,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 12:31:29,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 12:31:29,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 12:31:29,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 12:31:29,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 12:31:29,285 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 12:31:29,287 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 12:31:29,288 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 12:31:29,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 12:31:29,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 12:31:29,295 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 12:31:29,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 12:31:29,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 12:31:29,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 12:31:29,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 12:31:29,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 12:31:29,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 12:31:29,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 12:31:29,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 12:31:29,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 12:31:29,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 12:31:29,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 12:31:29,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 12:31:29,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 12:31:29,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 12:31:29,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 12:31:29,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 12:31:29,310 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-23 12:31:29,335 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 12:31:29,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 12:31:29,342 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 12:31:29,342 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 12:31:29,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 12:31:29,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 12:31:29,345 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 12:31:29,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 12:31:29,346 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-23 12:31:29,346 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-23 12:31:29,348 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 12:31:29,348 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 12:31:29,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 12:31:29,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 12:31:29,349 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-23 12:31:29,349 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-23 12:31:29,349 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-23 12:31:29,350 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-23 12:31:29,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 12:31:29,350 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 12:31:29,350 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 12:31:29,350 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 12:31:29,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 12:31:29,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 12:31:29,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:31:29,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 12:31:29,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 12:31:29,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 12:31:29,353 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-23 12:31:29,353 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-23 12:31:29,353 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 12:31:29,353 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 12:31:29,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 12:31:29,354 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 12:31:29,354 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 12:31:29,355 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_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d0cec7ddb8a2645a0ba1656999ba73d1a21b29e3fbe1129f436b67dd30c2f050 [2021-11-23 12:31:29,767 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 12:31:29,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 12:31:29,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 12:31:29,790 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 12:31:29,791 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 12:31:29,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2021-11-23 12:31:29,856 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/data/f7b9c0eda/7e1bd24085f14aa88286919ae95a4022/FLAG2ef170b89 [2021-11-23 12:31:30,459 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 12:31:30,460 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/sv-benchmarks/c/float-newlib/float_req_bl_0930.c [2021-11-23 12:31:30,472 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/data/f7b9c0eda/7e1bd24085f14aa88286919ae95a4022/FLAG2ef170b89 [2021-11-23 12:31:30,883 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/data/f7b9c0eda/7e1bd24085f14aa88286919ae95a4022 [2021-11-23 12:31:30,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 12:31:30,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 12:31:30,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 12:31:30,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 12:31:30,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 12:31:30,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:31:30" (1/1) ... [2021-11-23 12:31:30,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ec9d4cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:30, skipping insertion in model container [2021-11-23 12:31:30,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 12:31:30" (1/1) ... [2021-11-23 12:31:30,911 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 12:31:30,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 12:31:31,122 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/sv-benchmarks/c/float-newlib/float_req_bl_0930.c[3104,3117] [2021-11-23 12:31:31,130 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:31:31,178 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 12:31:31,218 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/sv-benchmarks/c/float-newlib/float_req_bl_0930.c[3104,3117] [2021-11-23 12:31:31,219 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 12:31:31,236 INFO L208 MainTranslator]: Completed translation [2021-11-23 12:31:31,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:31 WrapperNode [2021-11-23 12:31:31,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 12:31:31,238 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 12:31:31,238 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 12:31:31,238 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 12:31:31,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:31" (1/1) ... [2021-11-23 12:31:31,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:31" (1/1) ... [2021-11-23 12:31:31,287 INFO L137 Inliner]: procedures = 20, calls = 25, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 157 [2021-11-23 12:31:31,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 12:31:31,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 12:31:31,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 12:31:31,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 12:31:31,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:31" (1/1) ... [2021-11-23 12:31:31,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:31" (1/1) ... [2021-11-23 12:31:31,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:31" (1/1) ... [2021-11-23 12:31:31,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:31" (1/1) ... [2021-11-23 12:31:31,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:31" (1/1) ... [2021-11-23 12:31:31,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:31" (1/1) ... [2021-11-23 12:31:31,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:31" (1/1) ... [2021-11-23 12:31:31,330 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 12:31:31,331 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 12:31:31,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 12:31:31,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 12:31:31,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:31" (1/1) ... [2021-11-23 12:31:31,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 12:31:31,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:31:31,366 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 12:31:31,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 12:31:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 12:31:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-23 12:31:31,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 12:31:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-11-23 12:31:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-23 12:31:31,413 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 12:31:31,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 12:31:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-11-23 12:31:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-23 12:31:31,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 12:31:31,540 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 12:31:31,542 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 12:31:49,525 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 12:31:49,531 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 12:31:49,532 INFO L301 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-23 12:31:49,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:31:49 BoogieIcfgContainer [2021-11-23 12:31:49,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 12:31:49,541 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 12:31:49,543 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 12:31:49,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 12:31:49,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 12:31:30" (1/3) ... [2021-11-23 12:31:49,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21ff1e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:31:49, skipping insertion in model container [2021-11-23 12:31:49,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 12:31:31" (2/3) ... [2021-11-23 12:31:49,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21ff1e80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 12:31:49, skipping insertion in model container [2021-11-23 12:31:49,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:31:49" (3/3) ... [2021-11-23 12:31:49,551 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0930.c [2021-11-23 12:31:49,567 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 12:31:49,568 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 12:31:49,629 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 12:31:49,637 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 12:31:49,638 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 12:31:49,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 32 states have (on average 1.6875) internal successors, (54), 33 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:49,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-23 12:31:49,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:49,663 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:49,664 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:31:49,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:49,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1904085918, now seen corresponding path program 1 times [2021-11-23 12:31:49,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:49,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93512268] [2021-11-23 12:31:49,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:49,682 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:49,683 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:49,686 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:49,730 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-23 12:31:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:50,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-23 12:31:50,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:50,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:50,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:50,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:50,429 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:50,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93512268] [2021-11-23 12:31:50,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [93512268] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:50,430 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:50,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-23 12:31:50,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478830640] [2021-11-23 12:31:50,433 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:50,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 12:31:50,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:50,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 12:31:50,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:31:50,488 INFO L87 Difference]: Start difference. First operand has 34 states, 32 states have (on average 1.6875) internal successors, (54), 33 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:50,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:50,507 INFO L93 Difference]: Finished difference Result 66 states and 106 transitions. [2021-11-23 12:31:50,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 12:31:50,510 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-23 12:31:50,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:50,521 INFO L225 Difference]: With dead ends: 66 [2021-11-23 12:31:50,521 INFO L226 Difference]: Without dead ends: 31 [2021-11-23 12:31:50,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 12:31:50,529 INFO L933 BasicCegarLoop]: 45 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, 45 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:50,534 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 12:31:50,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-23 12:31:50,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-23 12:31:50,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:50,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-11-23 12:31:50,581 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 9 [2021-11-23 12:31:50,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:50,581 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-11-23 12:31:50,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:50,582 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-11-23 12:31:50,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-23 12:31:50,583 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:50,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:50,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:50,817 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:50,818 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:31:50,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:50,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1484264895, now seen corresponding path program 1 times [2021-11-23 12:31:50,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:50,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1480316946] [2021-11-23 12:31:50,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:50,820 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:50,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:50,821 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:50,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-23 12:31:51,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:51,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 12:31:51,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:51,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:51,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:51,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:51,930 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:51,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1480316946] [2021-11-23 12:31:51,930 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1480316946] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:51,931 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:51,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 12:31:51,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67189647] [2021-11-23 12:31:51,931 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:51,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:31:51,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:51,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:31:51,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:31:51,935 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:53,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:53,285 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2021-11-23 12:31:53,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:31:53,400 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-23 12:31:53,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:53,401 INFO L225 Difference]: With dead ends: 50 [2021-11-23 12:31:53,402 INFO L226 Difference]: Without dead ends: 41 [2021-11-23 12:31:53,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:31:53,404 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 15 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:53,405 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 122 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 12 Unchecked, 1.3s Time] [2021-11-23 12:31:53,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-23 12:31:53,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 31. [2021-11-23 12:31:53,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3666666666666667) internal successors, (41), 30 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:53,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2021-11-23 12:31:53,414 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 41 transitions. Word has length 10 [2021-11-23 12:31:53,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:53,415 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 41 transitions. [2021-11-23 12:31:53,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:53,415 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 41 transitions. [2021-11-23 12:31:53,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-23 12:31:53,416 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:53,417 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:53,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:53,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:53,621 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:31:53,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:53,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1245957376, now seen corresponding path program 1 times [2021-11-23 12:31:53,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:53,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788250864] [2021-11-23 12:31:53,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:53,623 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:53,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:53,625 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:53,627 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-23 12:31:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:54,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 12:31:54,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:54,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:54,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:54,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:54,604 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:54,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788250864] [2021-11-23 12:31:54,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788250864] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:54,605 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:54,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 12:31:54,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633986085] [2021-11-23 12:31:54,605 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:54,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:31:54,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:54,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:31:54,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:31:54,607 INFO L87 Difference]: Start difference. First operand 31 states and 41 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:57,602 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.33s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:31:57,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:57,604 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2021-11-23 12:31:57,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:31:57,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-23 12:31:57,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:57,734 INFO L225 Difference]: With dead ends: 50 [2021-11-23 12:31:57,735 INFO L226 Difference]: Without dead ends: 41 [2021-11-23 12:31:57,735 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:31:57,737 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 19 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 16 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:57,738 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 96 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 1 Unknown, 16 Unchecked, 3.0s Time] [2021-11-23 12:31:57,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-11-23 12:31:57,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 31. [2021-11-23 12:31:57,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 30 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:57,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 40 transitions. [2021-11-23 12:31:57,746 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 40 transitions. Word has length 11 [2021-11-23 12:31:57,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:57,746 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 40 transitions. [2021-11-23 12:31:57,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:57,747 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 40 transitions. [2021-11-23 12:31:57,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-23 12:31:57,748 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:57,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:57,777 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:57,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:57,961 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:31:57,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:57,962 INFO L85 PathProgramCache]: Analyzing trace with hash 21115748, now seen corresponding path program 1 times [2021-11-23 12:31:57,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:57,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038387008] [2021-11-23 12:31:57,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:57,963 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:57,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:57,964 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:57,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-23 12:31:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:58,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 12:31:58,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:31:58,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:58,592 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:31:58,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:31:58,867 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:31:58,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038387008] [2021-11-23 12:31:58,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038387008] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:31:58,867 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:31:58,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 12:31:58,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137136031] [2021-11-23 12:31:58,868 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:31:58,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 12:31:58,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:31:58,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 12:31:58,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:31:58,870 INFO L87 Difference]: Start difference. First operand 31 states and 40 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:58,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:31:58,876 INFO L93 Difference]: Finished difference Result 40 states and 49 transitions. [2021-11-23 12:31:58,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 12:31:58,876 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-23 12:31:58,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:31:58,877 INFO L225 Difference]: With dead ends: 40 [2021-11-23 12:31:58,877 INFO L226 Difference]: Without dead ends: 31 [2021-11-23 12:31:58,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 12:31:58,880 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:31:58,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 145 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 20 Unchecked, 0.0s Time] [2021-11-23 12:31:58,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-11-23 12:31:58,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-11-23 12:31:58,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.3) internal successors, (39), 30 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:58,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 39 transitions. [2021-11-23 12:31:58,886 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 39 transitions. Word has length 12 [2021-11-23 12:31:58,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:31:58,887 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 39 transitions. [2021-11-23 12:31:58,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:31:58,887 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 39 transitions. [2021-11-23 12:31:58,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 12:31:58,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:31:58,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:31:58,915 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-23 12:31:59,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:31:59,108 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:31:59,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:31:59,108 INFO L85 PathProgramCache]: Analyzing trace with hash 933425138, now seen corresponding path program 1 times [2021-11-23 12:31:59,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:31:59,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542133599] [2021-11-23 12:31:59,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:31:59,109 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:31:59,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:31:59,110 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:31:59,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-23 12:31:59,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:31:59,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 12:31:59,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:32:00,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:00,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:32:00,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:00,491 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:32:00,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542133599] [2021-11-23 12:32:00,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542133599] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:32:00,491 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:32:00,491 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-23 12:32:00,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798375178] [2021-11-23 12:32:00,492 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:32:00,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 12:32:00,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:32:00,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 12:32:00,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:32:00,493 INFO L87 Difference]: Start difference. First operand 31 states and 39 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:00,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:00,547 INFO L93 Difference]: Finished difference Result 45 states and 53 transitions. [2021-11-23 12:32:00,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 12:32:00,548 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-23 12:32:00,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:00,549 INFO L225 Difference]: With dead ends: 45 [2021-11-23 12:32:00,549 INFO L226 Difference]: Without dead ends: 42 [2021-11-23 12:32:00,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 12:32:00,553 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 24 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:00,554 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 150 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 21 Unchecked, 0.0s Time] [2021-11-23 12:32:00,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-11-23 12:32:00,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2021-11-23 12:32:00,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.28125) internal successors, (41), 32 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:00,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2021-11-23 12:32:00,562 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 20 [2021-11-23 12:32:00,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:00,563 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2021-11-23 12:32:00,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:00,563 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2021-11-23 12:32:00,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 12:32:00,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:00,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:32:00,587 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-23 12:32:00,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:32:00,786 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:32:00,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:00,786 INFO L85 PathProgramCache]: Analyzing trace with hash 935272180, now seen corresponding path program 1 times [2021-11-23 12:32:00,786 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:32:00,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175260900] [2021-11-23 12:32:00,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:00,787 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:32:00,787 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:32:00,788 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:32:00,792 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-23 12:32:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:01,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 12:32:01,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:32:02,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:02,444 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:32:03,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:03,351 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:32:03,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175260900] [2021-11-23 12:32:03,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175260900] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-23 12:32:03,352 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:32:03,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2021-11-23 12:32:03,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193251607] [2021-11-23 12:32:03,352 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-23 12:32:03,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-23 12:32:03,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-23 12:32:03,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-23 12:32:03,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-23 12:32:03,357 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:05,800 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.32s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:32:07,135 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:32:09,513 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:32:11,516 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:32:13,647 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:32:15,657 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:32:17,660 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:32:19,807 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:32:21,810 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:32:23,813 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:32:25,138 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:32:26,738 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:32:28,815 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:32:30,820 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:32:32,823 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:32:34,928 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:32:36,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:32:38,934 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-11-23 12:32:38,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 12:32:38,982 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2021-11-23 12:32:38,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 12:32:38,986 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-11-23 12:32:38,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 12:32:38,988 INFO L225 Difference]: With dead ends: 59 [2021-11-23 12:32:38,988 INFO L226 Difference]: Without dead ends: 50 [2021-11-23 12:32:38,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-23 12:32:38,991 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 15 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 35.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 35.6s IncrementalHoareTripleChecker+Time [2021-11-23 12:32:38,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 152 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 15 Unknown, 20 Unchecked, 35.6s Time] [2021-11-23 12:32:38,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-11-23 12:32:38,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2021-11-23 12:32:38,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 40 states have (on average 1.275) internal successors, (51), 40 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:39,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2021-11-23 12:32:39,000 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 20 [2021-11-23 12:32:39,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 12:32:39,001 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2021-11-23 12:32:39,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.9166666666666665) internal successors, (35), 12 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 12:32:39,001 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2021-11-23 12:32:39,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-11-23 12:32:39,002 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 12:32:39,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:32:39,019 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-23 12:32:39,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 [2021-11-23 12:32:39,203 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 12:32:39,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 12:32:39,204 INFO L85 PathProgramCache]: Analyzing trace with hash 1140293842, now seen corresponding path program 1 times [2021-11-23 12:32:39,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-23 12:32:39,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [923069044] [2021-11-23 12:32:39,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:32:39,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-23 12:32:39,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat [2021-11-23 12:32:39,210 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-23 12:32:39,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-23 12:32:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:32:39,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-23 12:32:39,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 12:32:40,170 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-23 12:32:41,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 57 [2021-11-23 12:32:41,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 12:32:41,403 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 12:33:13,255 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-23 12:33:13,255 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-23 12:33:13,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [923069044] [2021-11-23 12:33:13,256 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-23 12:33:13,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2036017921] [2021-11-23 12:33:13,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:33:13,256 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-23 12:33:13,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/cvc4 [2021-11-23 12:33:13,256 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 101 [2021-11-23 12:33:13,259 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-23 12:33:13,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-23 12:33:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:33:14,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-23 12:33:14,866 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@2bc17c1e [2021-11-23 12:33:14,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211623777] [2021-11-23 12:33:14,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 12:33:14,867 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 12:33:14,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 12:33:14,868 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 12:33:14,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-23 12:33:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 12:33:15,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-23 12:33:15,051 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@2bc17c1e [2021-11-23 12:33:15,051 INFO L186 FreeRefinementEngine]: Found 0 perfect and 0 imperfect interpolant sequences. [2021-11-23 12:33:15,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-23 12:33:15,052 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-11-23 12:33:15,052 INFO L628 BasicCegarLoop]: Counterexample might be feasible [2021-11-23 12:33:15,057 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-23 12:33:15,077 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-23 12:33:15,287 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-23 12:33:15,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-23 12:33:15,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6ac48b59-2b10-4f87-a023-a1494e3745c4/bin/uautomizer-wIGwrQj20G/cvc4 --incremental --print-success --lang smt [2021-11-23 12:33:15,664 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2021-11-23 12:33:15,667 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-23 12:33:15,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 12:33:15 BoogieIcfgContainer [2021-11-23 12:33:15,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-23 12:33:15,682 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-23 12:33:15,682 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-23 12:33:15,682 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-23 12:33:15,683 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 12:31:49" (3/4) ... [2021-11-23 12:33:15,685 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-23 12:33:15,685 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-23 12:33:15,685 INFO L158 Benchmark]: Toolchain (without parser) took 104796.32ms. Allocated memory is still 69.2MB. Free memory was 47.6MB in the beginning and 30.1MB in the end (delta: 17.5MB). Peak memory consumption was 17.2MB. Max. memory is 16.1GB. [2021-11-23 12:33:15,686 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 52.4MB. Free memory was 33.1MB in the beginning and 33.0MB in the end (delta: 41.7kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:33:15,686 INFO L158 Benchmark]: CACSL2BoogieTranslator took 345.40ms. Allocated memory is still 69.2MB. Free memory was 47.4MB in the beginning and 50.4MB in the end (delta: -3.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-11-23 12:33:15,686 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.77ms. Allocated memory is still 69.2MB. Free memory was 50.4MB in the beginning and 48.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:33:15,687 INFO L158 Benchmark]: Boogie Preprocessor took 41.66ms. Allocated memory is still 69.2MB. Free memory was 48.3MB in the beginning and 46.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-23 12:33:15,687 INFO L158 Benchmark]: RCFGBuilder took 18205.35ms. Allocated memory is still 69.2MB. Free memory was 46.5MB in the beginning and 31.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-23 12:33:15,688 INFO L158 Benchmark]: TraceAbstraction took 86140.89ms. Allocated memory is still 69.2MB. Free memory was 31.5MB in the beginning and 30.1MB in the end (delta: 1.4MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2021-11-23 12:33:15,688 INFO L158 Benchmark]: Witness Printer took 2.87ms. Allocated memory is still 69.2MB. Free memory is still 30.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-23 12:33:15,690 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 52.4MB. Free memory was 33.1MB in the beginning and 33.0MB in the end (delta: 41.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 345.40ms. Allocated memory is still 69.2MB. Free memory was 47.4MB in the beginning and 50.4MB in the end (delta: -3.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.77ms. Allocated memory is still 69.2MB. Free memory was 50.4MB in the beginning and 48.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.66ms. Allocated memory is still 69.2MB. Free memory was 48.3MB in the beginning and 46.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 18205.35ms. Allocated memory is still 69.2MB. Free memory was 46.5MB in the beginning and 31.8MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 86140.89ms. Allocated memory is still 69.2MB. Free memory was 31.5MB in the beginning and 30.1MB in the end (delta: 1.4MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. * Witness Printer took 2.87ms. Allocated memory is still 69.2MB. Free memory is still 30.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 123]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L14-L18] static const float ln2_hi_log = 6.9313812256e-01, ln2_lo_log = 9.0580006145e-06, two25_log = 3.355443200e+07, Lg1_log = 6.6666668653e-01, Lg2_log = 4.0000000596e-01, Lg3_log = 2.8571429849e-01, Lg4_log = 2.2222198546e-01, Lg5_log = 1.8183572590e-01, Lg6_log = 1.5313838422e-01, Lg7_log = 1.4798198640e-01; [L20] static const float zero_log = 0.0; [L118] float x = 1.0f; [L119] CALL, EXPR __ieee754_logf(x) [L23] float hfsq, f, s, z, R, w, t1, t2, dk; [L24] __int32_t k, ix, i, j; [L27] ieee_float_shape_type gf_u; [L28] gf_u.value = (x) [L29] EXPR gf_u.word [L29] (ix) = gf_u.word [L32] k = 0 [L33] COND FALSE !(((ix & 0x7fffffff) == 0)) [L35] COND FALSE !(ix < 0) [L37] COND FALSE !(!((ix) < 0x7f800000L)) [L39] COND FALSE !(((ix) < 0x00800000L)) [L48] k += (ix >> 23) - 127 [L49] ix &= 0x007fffff [L50] i = (ix + (0x95f64 << 3)) & 0x800000 [L52] ieee_float_shape_type sf_u; [L53] sf_u.word = (ix | (i ^ 0x3f800000)) [L54] EXPR sf_u.value [L54] (x) = sf_u.value [L56] k += (i >> 23) [L57] f = x - (float)1.0 [L58] COND TRUE (0x007fffff & (15 + ix)) < 16 [L59] COND FALSE !(f == zero_log) [L67] R = f * f * ((float)0.5 - (float)0.33333333333333333 * f) [L68] COND TRUE k == 0 [L69] return f - R; [L119] RET, EXPR __ieee754_logf(x) [L119] float res = __ieee754_logf(x); [L122] EXPR res == 0.0f && __signbit_float(res) == 0 [L122] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L123] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 86.0s, OverallIterations: 7, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 40.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 16 mSolverCounterUnknown, 73 SdHoareTripleChecker+Valid, 39.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 73 mSDsluCounter, 710 SdHoareTripleChecker+Invalid, 39.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 89 IncrementalHoareTripleChecker+Unchecked, 483 mSDsCounter, 13 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43 IncrementalHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 13 mSolverCounterUnsat, 227 mSDtfsCounter, 43 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 125 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=6, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 38 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 3.3s SatisfiabilityAnalysisTime, 38.1s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 171 ConstructedInterpolants, 57 QuantifiedInterpolants, 1349 SizeOfPredicates, 44 NumberOfNonLiveVariables, 376 ConjunctsInSsa, 53 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN