./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3712292932a14caaa681695c17d35c29cbe1c2a4 ...................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3712292932a14caaa681695c17d35c29cbe1c2a4 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:39:42,015 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:39:42,018 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:39:42,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:39:42,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:39:42,085 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:39:42,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:39:42,089 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:39:42,100 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:39:42,102 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:39:42,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:39:42,104 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:39:42,104 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:39:42,105 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:39:42,107 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:39:42,108 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:39:42,109 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:39:42,110 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:39:42,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:39:42,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:39:42,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:39:42,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:39:42,127 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:39:42,128 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:39:42,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:39:42,134 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:39:42,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:39:42,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:39:42,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:39:42,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:39:42,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:39:42,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:39:42,141 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:39:42,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:39:42,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:39:42,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:39:42,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:39:42,145 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:39:42,145 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:39:42,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:39:42,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:39:42,150 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:39:42,183 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:39:42,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:39:42,184 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:39:42,186 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:39:42,186 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:39:42,186 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:39:42,187 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:39:42,187 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:39:42,187 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:39:42,187 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:39:42,188 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:39:42,189 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:39:42,189 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:39:42,189 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:39:42,189 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:39:42,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:39:42,190 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:39:42,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:39:42,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:39:42,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:39:42,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:39:42,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:39:42,192 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:39:42,192 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:39:42,192 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:39:42,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:39:42,193 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:39:42,193 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:39:42,193 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:39:42,195 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:39:42,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:39:42,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:39:42,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:39:42,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:39:42,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:39:42,197 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:39:42,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:39:42,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:39:42,197 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:39:42,198 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:39:42,198 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3712292932a14caaa681695c17d35c29cbe1c2a4 [2020-11-28 07:39:42,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:39:42,474 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:39:42,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:39:42,477 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:39:42,481 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:39:42,482 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2020-11-28 07:39:42,552 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/data/ae62a82b0/88923f33596d4a8fba42888e46fee893/FLAG5e92c8f07 [2020-11-28 07:39:42,956 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:39:42,957 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2020-11-28 07:39:42,963 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/data/ae62a82b0/88923f33596d4a8fba42888e46fee893/FLAG5e92c8f07 [2020-11-28 07:39:43,353 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/data/ae62a82b0/88923f33596d4a8fba42888e46fee893 [2020-11-28 07:39:43,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:39:43,357 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:39:43,360 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:39:43,361 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:39:43,364 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:39:43,366 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:39:43" (1/1) ... [2020-11-28 07:39:43,368 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7271554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:43, skipping insertion in model container [2020-11-28 07:39:43,368 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:39:43" (1/1) ... [2020-11-28 07:39:43,376 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:39:43,395 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:39:43,631 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:39:43,638 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:39:43,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:39:43,674 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:39:43,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:43 WrapperNode [2020-11-28 07:39:43,674 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:39:43,676 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:39:43,676 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:39:43,676 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:39:43,684 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:43" (1/1) ... [2020-11-28 07:39:43,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:43" (1/1) ... [2020-11-28 07:39:43,713 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:39:43,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:39:43,714 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:39:43,714 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:39:43,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:43" (1/1) ... [2020-11-28 07:39:43,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:43" (1/1) ... [2020-11-28 07:39:43,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:43" (1/1) ... [2020-11-28 07:39:43,726 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:43" (1/1) ... [2020-11-28 07:39:43,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:43" (1/1) ... [2020-11-28 07:39:43,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:43" (1/1) ... [2020-11-28 07:39:43,740 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:43" (1/1) ... [2020-11-28 07:39:43,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:39:43,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:39:43,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:39:43,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:39:43,745 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:39:43,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:39:43,816 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:39:43,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 07:39:43,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:39:43,817 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:39:43,817 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:39:43,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:39:44,600 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:39:44,600 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-28 07:39:44,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:39:44 BoogieIcfgContainer [2020-11-28 07:39:44,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:39:44,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:39:44,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:39:44,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:39:44,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:39:43" (1/3) ... [2020-11-28 07:39:44,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2687b108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:39:44, skipping insertion in model container [2020-11-28 07:39:44,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:43" (2/3) ... [2020-11-28 07:39:44,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2687b108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:39:44, skipping insertion in model container [2020-11-28 07:39:44,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:39:44" (3/3) ... [2020-11-28 07:39:44,610 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2020-11-28 07:39:44,620 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:39:44,625 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:39:44,635 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:39:44,678 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:39:44,678 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:39:44,679 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:39:44,679 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:39:44,679 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:39:44,679 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:39:44,679 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:39:44,680 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:39:44,692 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-28 07:39:44,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:39:44,696 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:44,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:44,697 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:44,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:44,703 INFO L82 PathProgramCache]: Analyzing trace with hash 43722941, now seen corresponding path program 1 times [2020-11-28 07:39:44,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:39:44,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009458336] [2020-11-28 07:39:44,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:39:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:44,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:44,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009458336] [2020-11-28 07:39:44,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:44,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:39:44,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91751541] [2020-11-28 07:39:44,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:39:44,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:39:44,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:39:44,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:39:44,848 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-28 07:39:44,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:44,862 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-11-28 07:39:44,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:39:44,863 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-28 07:39:44,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:44,871 INFO L225 Difference]: With dead ends: 27 [2020-11-28 07:39:44,871 INFO L226 Difference]: Without dead ends: 12 [2020-11-28 07:39:44,874 INFO L677 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 [2020-11-28 07:39:44,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-28 07:39:44,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-28 07:39:44,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 07:39:44,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-28 07:39:44,902 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2020-11-28 07:39:44,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:44,903 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-28 07:39:44,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:39:44,903 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-28 07:39:44,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:39:44,904 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:44,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:44,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:39:44,905 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:44,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:44,906 INFO L82 PathProgramCache]: Analyzing trace with hash 490171576, now seen corresponding path program 1 times [2020-11-28 07:39:44,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:39:44,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212475497] [2020-11-28 07:39:44,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:39:44,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:39:44,954 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:39:44,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:39:44,989 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:39:45,022 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:39:45,025 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:39:45,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:39:45,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:39:45 BoogieIcfgContainer [2020-11-28 07:39:45,059 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:39:45,060 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:39:45,060 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:39:45,060 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:39:45,060 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:39:44" (3/4) ... [2020-11-28 07:39:45,064 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:39:45,064 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:39:45,067 INFO L168 Benchmark]: Toolchain (without parser) took 1708.12 ms. Allocated memory is still 107.0 MB. Free memory was 72.3 MB in the beginning and 64.7 MB in the end (delta: 7.6 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:45,068 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 107.0 MB. Free memory is still 88.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:39:45,070 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.91 ms. Allocated memory is still 107.0 MB. Free memory was 72.1 MB in the beginning and 83.5 MB in the end (delta: -11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:45,071 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.68 ms. Allocated memory is still 107.0 MB. Free memory was 83.5 MB in the beginning and 81.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:45,072 INFO L168 Benchmark]: Boogie Preprocessor took 28.76 ms. Allocated memory is still 107.0 MB. Free memory was 81.8 MB in the beginning and 80.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:45,073 INFO L168 Benchmark]: RCFGBuilder took 859.18 ms. Allocated memory is still 107.0 MB. Free memory was 80.2 MB in the beginning and 45.8 MB in the end (delta: 34.3 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:45,074 INFO L168 Benchmark]: TraceAbstraction took 455.07 ms. Allocated memory is still 107.0 MB. Free memory was 45.5 MB in the beginning and 65.3 MB in the end (delta: -19.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:39:45,074 INFO L168 Benchmark]: Witness Printer took 4.49 ms. Allocated memory is still 107.0 MB. Free memory was 65.3 MB in the beginning and 64.7 MB in the end (delta: 535.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:39:45,084 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 107.0 MB. Free memory is still 88.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 314.91 ms. Allocated memory is still 107.0 MB. Free memory was 72.1 MB in the beginning and 83.5 MB in the end (delta: -11.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.68 ms. Allocated memory is still 107.0 MB. Free memory was 83.5 MB in the beginning and 81.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.76 ms. Allocated memory is still 107.0 MB. Free memory was 81.8 MB in the beginning and 80.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 859.18 ms. Allocated memory is still 107.0 MB. Free memory was 80.2 MB in the beginning and 45.8 MB in the end (delta: 34.3 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 455.07 ms. Allocated memory is still 107.0 MB. Free memory was 45.5 MB in the beginning and 65.3 MB in the end (delta: -19.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.49 ms. Allocated memory is still 107.0 MB. Free memory was 65.3 MB in the beginning and 64.7 MB in the end (delta: 535.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 46, overapproximation of someBinaryArithmeticFLOAToperation at line 56. Possible FailurePath: [L56] float x = 0.0f / 0.0f; [L57] float y = 0.0f / 0.0f; [L14] __uint32_t w; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L22] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L24-L25] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L27-L28] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L30] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L33] return 0; [L37] COND TRUE __fpclassify_float(x) == 0 [L38] return y; [L58] float res = fmin_float(x, y); [L46] return x != x; [L60] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1230.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, 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=14occurred in iteration=0, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:39:47,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:39:47,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:39:47,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:39:47,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:39:47,613 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:39:47,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:39:47,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:39:47,624 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:39:47,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:39:47,633 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:39:47,645 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:39:47,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:39:47,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:39:47,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:39:47,652 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:39:47,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:39:47,658 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:39:47,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:39:47,666 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:39:47,674 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:39:47,676 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:39:47,680 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:39:47,682 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:39:47,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:39:47,687 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:39:47,688 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:39:47,690 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:39:47,691 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:39:47,692 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:39:47,693 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:39:47,694 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:39:47,696 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:39:47,696 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:39:47,697 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:39:47,698 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:39:47,698 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:39:47,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:39:47,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:39:47,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:39:47,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:39:47,702 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:39:47,741 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:39:47,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:39:47,742 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:39:47,742 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:39:47,742 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:39:47,743 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:39:47,743 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:39:47,743 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:39:47,743 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:39:47,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:39:47,744 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:39:47,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:39:47,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:39:47,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:39:47,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:39:47,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:39:47,746 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:39:47,746 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:39:47,746 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:39:47,746 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:39:47,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:39:47,747 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:39:47,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:39:47,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:39:47,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:39:47,748 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:39:47,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:39:47,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:39:47,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:39:47,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:39:47,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:39:47,749 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:39:47,750 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:39:47,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:39:47,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:39:47,750 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:39:47,750 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-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3712292932a14caaa681695c17d35c29cbe1c2a4 [2020-11-28 07:39:48,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:39:48,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:39:48,166 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:39:48,167 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:39:48,168 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:39:48,169 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2020-11-28 07:39:48,241 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/data/c3b8c3c5e/80fc4214196d4d1980595ed8db14762f/FLAG7299ef43c [2020-11-28 07:39:48,753 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:39:48,754 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/sv-benchmarks/c/float-newlib/float_req_bl_1230.c [2020-11-28 07:39:48,760 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/data/c3b8c3c5e/80fc4214196d4d1980595ed8db14762f/FLAG7299ef43c [2020-11-28 07:39:49,104 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/data/c3b8c3c5e/80fc4214196d4d1980595ed8db14762f [2020-11-28 07:39:49,106 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:39:49,108 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:39:49,109 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:39:49,109 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:39:49,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:39:49,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:39:49" (1/1) ... [2020-11-28 07:39:49,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5364f42d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:49, skipping insertion in model container [2020-11-28 07:39:49,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:39:49" (1/1) ... [2020-11-28 07:39:49,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:39:49,137 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:39:49,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:39:49,295 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:39:49,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:39:49,333 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:39:49,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:49 WrapperNode [2020-11-28 07:39:49,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:39:49,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:39:49,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:39:49,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:39:49,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:49" (1/1) ... [2020-11-28 07:39:49,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:49" (1/1) ... [2020-11-28 07:39:49,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:39:49,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:39:49,373 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:39:49,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:39:49,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:49" (1/1) ... [2020-11-28 07:39:49,383 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:49" (1/1) ... [2020-11-28 07:39:49,393 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:49" (1/1) ... [2020-11-28 07:39:49,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:49" (1/1) ... [2020-11-28 07:39:49,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:49" (1/1) ... [2020-11-28 07:39:49,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:49" (1/1) ... [2020-11-28 07:39:49,433 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:49" (1/1) ... [2020-11-28 07:39:49,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:39:49,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:39:49,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:39:49,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:39:49,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:39:49,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:39:49,501 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:39:49,501 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 07:39:49,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:39:49,502 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:39:49,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-28 07:39:49,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:39:49,968 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:39:49,968 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-28 07:39:49,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:39:49 BoogieIcfgContainer [2020-11-28 07:39:49,970 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:39:49,972 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:39:49,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:39:49,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:39:49,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:39:49" (1/3) ... [2020-11-28 07:39:49,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7702e02d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:39:49, skipping insertion in model container [2020-11-28 07:39:49,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:39:49" (2/3) ... [2020-11-28 07:39:49,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7702e02d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:39:49, skipping insertion in model container [2020-11-28 07:39:49,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:39:49" (3/3) ... [2020-11-28 07:39:49,978 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1230.c [2020-11-28 07:39:49,988 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:39:49,990 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:39:50,001 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:39:50,040 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:39:50,040 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:39:50,040 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:39:50,041 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:39:50,041 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:39:50,041 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:39:50,041 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:39:50,041 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:39:50,050 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-28 07:39:50,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:39:50,055 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:50,055 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:50,056 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:50,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:50,061 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-11-28 07:39:50,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:39:50,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255732145] [2020-11-28 07:39:50,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-28 07:39:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:50,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 07:39:50,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:39:50,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:50,178 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:39:50,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:50,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255732145] [2020-11-28 07:39:50,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:50,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:39:50,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454493193] [2020-11-28 07:39:50,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:39:50,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:39:50,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:39:50,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:39:50,202 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-28 07:39:50,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:50,217 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-11-28 07:39:50,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:39:50,218 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 07:39:50,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:50,227 INFO L225 Difference]: With dead ends: 55 [2020-11-28 07:39:50,227 INFO L226 Difference]: Without dead ends: 25 [2020-11-28 07:39:50,229 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:39:50,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-28 07:39:50,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-28 07:39:50,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 07:39:50,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-11-28 07:39:50,260 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-11-28 07:39:50,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:50,260 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-11-28 07:39:50,261 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:39:50,261 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-11-28 07:39:50,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:39:50,261 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:50,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:50,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:39:50,475 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:50,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:50,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-11-28 07:39:50,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:39:50,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1661113189] [2020-11-28 07:39:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-28 07:39:50,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:50,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:39:50,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:39:50,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:50,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:39:50,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:50,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1661113189] [2020-11-28 07:39:50,626 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:50,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:39:50,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129646182] [2020-11-28 07:39:50,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:39:50,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:39:50,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:39:50,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:39:50,629 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2020-11-28 07:39:50,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:50,794 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2020-11-28 07:39:50,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:39:50,797 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-28 07:39:50,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:50,798 INFO L225 Difference]: With dead ends: 52 [2020-11-28 07:39:50,798 INFO L226 Difference]: Without dead ends: 47 [2020-11-28 07:39:50,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:39:50,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-28 07:39:50,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-28 07:39:50,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 07:39:50,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-28 07:39:50,809 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-11-28 07:39:50,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:50,812 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-28 07:39:50,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:39:50,813 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-28 07:39:50,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:39:50,813 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:50,814 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:51,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:39:51,014 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:51,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:51,015 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-11-28 07:39:51,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:39:51,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1184907279] [2020-11-28 07:39:51,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-28 07:39:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:51,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 07:39:51,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:39:51,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:51,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:39:51,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:51,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1184907279] [2020-11-28 07:39:51,365 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:51,365 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-28 07:39:51,365 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639223309] [2020-11-28 07:39:51,366 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 07:39:51,366 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:39:51,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 07:39:51,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:39:51,368 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2020-11-28 07:39:51,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:51,670 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-11-28 07:39:51,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:39:51,672 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-28 07:39:51,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:51,673 INFO L225 Difference]: With dead ends: 36 [2020-11-28 07:39:51,673 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 07:39:51,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:39:51,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 07:39:51,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-11-28 07:39:51,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 07:39:51,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2020-11-28 07:39:51,679 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2020-11-28 07:39:51,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:51,679 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2020-11-28 07:39:51,679 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 07:39:51,679 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-11-28 07:39:51,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 07:39:51,680 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:51,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:51,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 07:39:51,893 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:51,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:51,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2020-11-28 07:39:51,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:39:51,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457979521] [2020-11-28 07:39:51,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-28 07:39:51,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:52,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:39:52,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:39:52,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:52,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:39:52,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:52,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457979521] [2020-11-28 07:39:52,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:52,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:39:52,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484079221] [2020-11-28 07:39:52,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:39:52,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:39:52,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:39:52,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:39:52,040 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2020-11-28 07:39:52,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:52,177 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-11-28 07:39:52,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:39:52,181 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-28 07:39:52,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:52,182 INFO L225 Difference]: With dead ends: 52 [2020-11-28 07:39:52,182 INFO L226 Difference]: Without dead ends: 47 [2020-11-28 07:39:52,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:39:52,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-28 07:39:52,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-28 07:39:52,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 07:39:52,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-28 07:39:52,193 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2020-11-28 07:39:52,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:52,193 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-28 07:39:52,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:39:52,194 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-11-28 07:39:52,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:39:52,195 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:52,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:52,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 07:39:52,413 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:52,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:52,413 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2020-11-28 07:39:52,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:39:52,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [620737283] [2020-11-28 07:39:52,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-28 07:39:52,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:52,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 07:39:52,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:39:52,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:52,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:39:52,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:52,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [620737283] [2020-11-28 07:39:52,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:52,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-11-28 07:39:52,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621311472] [2020-11-28 07:39:52,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 07:39:52,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:39:52,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 07:39:52,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-28 07:39:52,809 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2020-11-28 07:39:53,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:53,195 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2020-11-28 07:39:53,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:39:53,196 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-11-28 07:39:53,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:53,196 INFO L225 Difference]: With dead ends: 32 [2020-11-28 07:39:53,197 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 07:39:53,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-11-28 07:39:53,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 07:39:53,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-28 07:39:53,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 07:39:53,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-28 07:39:53,201 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2020-11-28 07:39:53,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:53,201 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-28 07:39:53,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 07:39:53,202 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-28 07:39:53,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 07:39:53,202 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:39:53,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:39:53,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 07:39:53,403 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:39:53,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:39:53,403 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2020-11-28 07:39:53,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:39:53,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [99402499] [2020-11-28 07:39:53,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-28 07:39:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:39:53,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 07:39:53,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:39:53,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:53,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:39:53,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:39:53,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [99402499] [2020-11-28 07:39:53,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:39:53,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-28 07:39:53,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096791969] [2020-11-28 07:39:53,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 07:39:53,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:39:53,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 07:39:53,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:39:53,669 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2020-11-28 07:39:53,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:39:53,897 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-11-28 07:39:53,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:39:53,898 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-11-28 07:39:53,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:39:53,898 INFO L225 Difference]: With dead ends: 23 [2020-11-28 07:39:53,898 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:39:53,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:39:53,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:39:53,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:39:53,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:39:53,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:39:53,902 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-28 07:39:53,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:39:53,902 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:39:53,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 07:39:53,902 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:39:53,902 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:39:54,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-28 07:39:54,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:39:54,306 INFO L274 CegarLoopResult]: For program point L60(lines 60 63) no Hoare annotation was computed. [2020-11-28 07:39:54,306 INFO L274 CegarLoopResult]: For program point L27(lines 27 33) no Hoare annotation was computed. [2020-11-28 07:39:54,306 INFO L274 CegarLoopResult]: For program point L27-1(lines 27 33) no Hoare annotation was computed. [2020-11-28 07:39:54,306 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 07:39:54,306 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-28 07:39:54,306 INFO L277 CegarLoopResult]: At program point L65(lines 48 66) the Hoare annotation is: true [2020-11-28 07:39:54,306 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 07:39:54,306 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:39:54,306 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 07:39:54,307 INFO L274 CegarLoopResult]: For program point L24(lines 24 33) no Hoare annotation was computed. [2020-11-28 07:39:54,307 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 07:39:54,307 INFO L274 CegarLoopResult]: For program point L24-1(lines 24 33) no Hoare annotation was computed. [2020-11-28 07:39:54,307 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 20) no Hoare annotation was computed. [2020-11-28 07:39:54,307 INFO L270 CegarLoopResult]: At program point L16-2(lines 16 20) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x))) [2020-11-28 07:39:54,307 INFO L274 CegarLoopResult]: For program point L16-3(lines 13 34) no Hoare annotation was computed. [2020-11-28 07:39:54,307 INFO L274 CegarLoopResult]: For program point L16-5(lines 16 20) no Hoare annotation was computed. [2020-11-28 07:39:54,307 INFO L270 CegarLoopResult]: At program point L16-6(lines 16 20) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x))) [2020-11-28 07:39:54,307 INFO L274 CegarLoopResult]: For program point L16-7(lines 13 34) no Hoare annotation was computed. [2020-11-28 07:39:54,307 INFO L274 CegarLoopResult]: For program point L37(lines 37 38) no Hoare annotation was computed. [2020-11-28 07:39:54,313 INFO L270 CegarLoopResult]: At program point L33(lines 13 34) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)) (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x))) [2020-11-28 07:39:54,313 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:39:54,314 INFO L270 CegarLoopResult]: At program point L33-1(lines 13 34) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y)))) (or (and .cse0 (not (fp.eq ULTIMATE.start_fmin_float_~x ULTIMATE.start_fmin_float_~x))) (and (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) .cse0))) [2020-11-28 07:39:54,314 INFO L270 CegarLoopResult]: At program point L46(line 46) the Hoare annotation is: (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq |ULTIMATE.start_fmin_float_#res| |ULTIMATE.start_fmin_float_#res|)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2020-11-28 07:39:54,314 INFO L274 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-11-28 07:39:54,314 INFO L274 CegarLoopResult]: For program point L42-2(line 42) no Hoare annotation was computed. [2020-11-28 07:39:54,314 INFO L270 CegarLoopResult]: At program point L42-3(lines 36 43) the Hoare annotation is: (and (not (fp.eq |ULTIMATE.start_fmin_float_#res| |ULTIMATE.start_fmin_float_#res|)) (not (fp.eq ULTIMATE.start_fmin_float_~y ULTIMATE.start_fmin_float_~y))) [2020-11-28 07:39:54,314 INFO L274 CegarLoopResult]: For program point L30(lines 30 33) no Hoare annotation was computed. [2020-11-28 07:39:54,314 INFO L274 CegarLoopResult]: For program point L30-1(lines 30 33) no Hoare annotation was computed. [2020-11-28 07:39:54,314 INFO L274 CegarLoopResult]: For program point L39(lines 39 40) no Hoare annotation was computed. [2020-11-28 07:39:54,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:39:54 BoogieIcfgContainer [2020-11-28 07:39:54,347 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:39:54,348 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:39:54,348 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:39:54,348 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:39:54,349 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:39:49" (3/4) ... [2020-11-28 07:39:54,351 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:39:54,366 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-28 07:39:54,366 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 07:39:54,367 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:39:54,367 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:39:54,393 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~FLOAT(\result, \result) && !~fp.eq~FLOAT(y, y) [2020-11-28 07:39:54,394 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1bv32 == \result && !~fp.eq~FLOAT(\result, \result)) && !~fp.eq~FLOAT(y, y) [2020-11-28 07:39:54,394 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x)) || (!(0bv32 == \result) && !~fp.eq~FLOAT(y, y)) [2020-11-28 07:39:54,435 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6d19c7de-eeb0-4435-a610-cce1898dadd0/bin/utaipan/witness.graphml [2020-11-28 07:39:54,435 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:39:54,437 INFO L168 Benchmark]: Toolchain (without parser) took 5328.50 ms. Allocated memory was 50.3 MB in the beginning and 88.1 MB in the end (delta: 37.7 MB). Free memory was 27.4 MB in the beginning and 65.1 MB in the end (delta: -37.7 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:54,437 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 50.3 MB. Free memory was 32.5 MB in the beginning and 32.4 MB in the end (delta: 25.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:39:54,438 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.60 ms. Allocated memory is still 50.3 MB. Free memory was 27.2 MB in the beginning and 30.3 MB in the end (delta: -3.0 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:54,439 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.57 ms. Allocated memory is still 50.3 MB. Free memory was 30.3 MB in the beginning and 28.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:54,439 INFO L168 Benchmark]: Boogie Preprocessor took 63.52 ms. Allocated memory is still 50.3 MB. Free memory was 28.5 MB in the beginning and 26.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:39:54,439 INFO L168 Benchmark]: RCFGBuilder took 528.29 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.9 MB in the beginning and 30.5 MB in the end (delta: -3.6 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:54,440 INFO L168 Benchmark]: TraceAbstraction took 4375.51 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 30.0 MB in the beginning and 68.7 MB in the end (delta: -38.7 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:54,441 INFO L168 Benchmark]: Witness Printer took 87.56 ms. Allocated memory is still 88.1 MB. Free memory was 68.7 MB in the beginning and 65.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:39:54,443 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 50.3 MB. Free memory was 32.5 MB in the beginning and 32.4 MB in the end (delta: 25.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 224.60 ms. Allocated memory is still 50.3 MB. Free memory was 27.2 MB in the beginning and 30.3 MB in the end (delta: -3.0 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.57 ms. Allocated memory is still 50.3 MB. Free memory was 30.3 MB in the beginning and 28.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 63.52 ms. Allocated memory is still 50.3 MB. Free memory was 28.5 MB in the beginning and 26.9 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 528.29 ms. Allocated memory was 50.3 MB in the beginning and 60.8 MB in the end (delta: 10.5 MB). Free memory was 26.9 MB in the beginning and 30.5 MB in the end (delta: -3.6 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4375.51 ms. Allocated memory was 60.8 MB in the beginning and 88.1 MB in the end (delta: 27.3 MB). Free memory was 30.0 MB in the beginning and 68.7 MB in the end (delta: -38.7 MB). Peak memory consumption was 18.3 MB. Max. memory is 16.1 GB. * Witness Printer took 87.56 ms. Allocated memory is still 88.1 MB. Free memory was 68.7 MB in the beginning and 65.1 MB in the end (delta: 3.6 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: (!~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x)) || (!(0bv32 == \result) && !~fp.eq~FLOAT(y, y)) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 48]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(\result, \result) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: (1bv32 == \result && !~fp.eq~FLOAT(\result, \result)) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(y, y) && !~fp.eq~FLOAT(x, x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.0s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 182 SDtfs, 117 SDslu, 549 SDs, 0 SdLazy, 138 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, 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, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 68 HoareAnnotationTreeSize, 7 FomulaSimplifications, 213 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8466 SizeOfPredicates, 32 NumberOfNonLiveVariables, 375 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...