./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.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_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7498db39da300a600c956afc9ee769ef7c520660 ................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7498db39da300a600c956afc9ee769ef7c520660 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:16:16,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:16:16,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:16:16,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:16:16,122 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:16:16,124 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:16:16,127 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:16:16,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:16:16,133 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:16:16,147 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:16:16,149 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:16:16,151 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:16:16,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:16:16,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:16:16,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:16:16,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:16:16,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:16:16,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:16:16,179 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:16:16,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:16:16,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:16:16,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:16:16,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:16:16,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:16:16,219 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:16:16,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:16:16,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:16:16,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:16:16,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:16:16,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:16:16,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:16:16,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:16:16,235 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:16:16,237 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:16:16,239 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:16:16,239 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:16:16,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:16:16,241 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:16:16,241 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:16:16,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:16:16,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:16:16,247 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:16:16,296 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:16:16,296 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:16:16,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:16:16,300 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:16:16,300 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:16:16,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:16:16,301 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:16:16,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:16:16,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:16:16,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:16:16,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:16:16,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:16:16,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:16:16,304 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:16:16,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:16:16,304 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:16:16,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:16:16,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:16:16,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:16:16,306 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:16:16,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:16:16,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:16:16,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:16:16,307 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:16:16,307 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:16:16,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:16:16,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:16:16,308 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:16:16,308 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:16:16,309 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7498db39da300a600c956afc9ee769ef7c520660 [2020-11-30 00:16:16,611 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:16:16,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:16:16,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:16:16,644 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:16:16,645 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:16:16,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2020-11-30 00:16:16,740 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/data/d14945f28/7bce5d159b8d45abba1d76cb4359cfc7/FLAGa3299e45c [2020-11-30 00:16:17,363 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:16:17,365 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2020-11-30 00:16:17,378 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/data/d14945f28/7bce5d159b8d45abba1d76cb4359cfc7/FLAGa3299e45c [2020-11-30 00:16:17,707 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/data/d14945f28/7bce5d159b8d45abba1d76cb4359cfc7 [2020-11-30 00:16:17,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:16:17,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:16:17,719 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:16:17,719 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:16:17,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:16:17,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:16:17" (1/1) ... [2020-11-30 00:16:17,730 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36e75216 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:17, skipping insertion in model container [2020-11-30 00:16:17,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:16:17" (1/1) ... [2020-11-30 00:16:17,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:16:17,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:16:18,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:16:18,034 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:16:18,088 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:16:18,112 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:16:18,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:18 WrapperNode [2020-11-30 00:16:18,116 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:16:18,117 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:16:18,118 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:16:18,118 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:16:18,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:18" (1/1) ... [2020-11-30 00:16:18,155 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:18" (1/1) ... [2020-11-30 00:16:18,197 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:16:18,199 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:16:18,200 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:16:18,200 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:16:18,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:18" (1/1) ... [2020-11-30 00:16:18,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:18" (1/1) ... [2020-11-30 00:16:18,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:18" (1/1) ... [2020-11-30 00:16:18,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:18" (1/1) ... [2020-11-30 00:16:18,242 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:18" (1/1) ... [2020-11-30 00:16:18,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:18" (1/1) ... [2020-11-30 00:16:18,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:18" (1/1) ... [2020-11-30 00:16:18,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:16:18,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:16:18,264 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:16:18,264 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:16:18,269 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/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 [2020-11-30 00:16:18,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:16:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:16:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 00:16:18,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:16:18,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:16:18,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:16:18,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:16:19,039 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:16:19,040 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-30 00:16:19,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:16:19 BoogieIcfgContainer [2020-11-30 00:16:19,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:16:19,047 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:16:19,048 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:16:19,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:16:19,052 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:16:17" (1/3) ... [2020-11-30 00:16:19,053 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7d180b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:16:19, skipping insertion in model container [2020-11-30 00:16:19,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:18" (2/3) ... [2020-11-30 00:16:19,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7d180b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:16:19, skipping insertion in model container [2020-11-30 00:16:19,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:16:19" (3/3) ... [2020-11-30 00:16:19,056 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2020-11-30 00:16:19,070 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:16:19,075 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:16:19,090 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:16:19,134 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:16:19,134 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:16:19,135 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:16:19,135 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:16:19,135 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:16:19,135 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:16:19,135 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:16:19,136 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:16:19,154 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-30 00:16:19,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:16:19,168 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:19,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:19,170 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:19,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:19,177 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-11-30 00:16:19,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:19,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903821679] [2020-11-30 00:16:19,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:19,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:19,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:19,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903821679] [2020-11-30 00:16:19,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:16:19,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 00:16:19,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752997268] [2020-11-30 00:16:19,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:16:19,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:19,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:16:19,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:16:19,429 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-30 00:16:19,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:19,456 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-11-30 00:16:19,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:16:19,458 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 00:16:19,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:19,481 INFO L225 Difference]: With dead ends: 55 [2020-11-30 00:16:19,488 INFO L226 Difference]: Without dead ends: 25 [2020-11-30 00:16:19,492 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 [2020-11-30 00:16:19,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-30 00:16:19,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-30 00:16:19,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-30 00:16:19,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-11-30 00:16:19,540 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-11-30 00:16:19,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:19,542 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-11-30 00:16:19,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:16:19,542 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-11-30 00:16:19,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:16:19,543 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:19,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:19,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:16:19,543 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:19,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:19,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-11-30 00:16:19,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:19,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433458338] [2020-11-30 00:16:19,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:19,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433458338] [2020-11-30 00:16:19,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:16:19,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:16:19,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472382736] [2020-11-30 00:16:19,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:16:19,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:19,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:16:19,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:16:19,738 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 4 states. [2020-11-30 00:16:19,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:19,875 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2020-11-30 00:16:19,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:16:19,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-30 00:16:19,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:19,879 INFO L225 Difference]: With dead ends: 41 [2020-11-30 00:16:19,879 INFO L226 Difference]: Without dead ends: 36 [2020-11-30 00:16:19,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:16:19,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-30 00:16:19,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 27. [2020-11-30 00:16:19,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 00:16:19,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-30 00:16:19,896 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-11-30 00:16:19,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:19,897 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-30 00:16:19,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:16:19,898 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-30 00:16:19,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:16:19,900 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:19,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:19,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:16:19,902 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:19,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:19,903 INFO L82 PathProgramCache]: Analyzing trace with hash 502183504, now seen corresponding path program 1 times [2020-11-30 00:16:19,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:19,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666771176] [2020-11-30 00:16:19,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:20,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:20,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666771176] [2020-11-30 00:16:20,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:16:20,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:16:20,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336609351] [2020-11-30 00:16:20,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:16:20,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:20,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:16:20,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:16:20,005 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-11-30 00:16:20,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:20,098 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-11-30 00:16:20,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:16:20,099 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-30 00:16:20,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:20,100 INFO L225 Difference]: With dead ends: 43 [2020-11-30 00:16:20,100 INFO L226 Difference]: Without dead ends: 38 [2020-11-30 00:16:20,101 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:16:20,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-30 00:16:20,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-11-30 00:16:20,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 00:16:20,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-30 00:16:20,114 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 12 [2020-11-30 00:16:20,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:20,115 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-30 00:16:20,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:16:20,115 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-30 00:16:20,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 00:16:20,117 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:20,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:20,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:16:20,117 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:20,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:20,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1951251627, now seen corresponding path program 1 times [2020-11-30 00:16:20,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:20,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614075608] [2020-11-30 00:16:20,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:20,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:20,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614075608] [2020-11-30 00:16:20,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:16:20,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:16:20,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956107913] [2020-11-30 00:16:20,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:16:20,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:20,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:16:20,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:16:20,238 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-11-30 00:16:20,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:20,353 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2020-11-30 00:16:20,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:16:20,356 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-11-30 00:16:20,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:20,357 INFO L225 Difference]: With dead ends: 45 [2020-11-30 00:16:20,357 INFO L226 Difference]: Without dead ends: 40 [2020-11-30 00:16:20,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:16:20,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-30 00:16:20,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 27. [2020-11-30 00:16:20,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 00:16:20,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-30 00:16:20,368 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 13 [2020-11-30 00:16:20,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:20,369 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-30 00:16:20,369 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:16:20,369 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-30 00:16:20,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:16:20,371 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:20,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:20,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:16:20,371 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:20,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:20,372 INFO L82 PathProgramCache]: Analyzing trace with hash -555778251, now seen corresponding path program 1 times [2020-11-30 00:16:20,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:20,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272511650] [2020-11-30 00:16:20,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:20,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:20,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:20,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272511650] [2020-11-30 00:16:20,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:16:20,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:16:20,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758364828] [2020-11-30 00:16:20,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:16:20,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:16:20,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:16:20,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:16:20,469 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 4 states. [2020-11-30 00:16:20,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:20,536 INFO L93 Difference]: Finished difference Result 43 states and 54 transitions. [2020-11-30 00:16:20,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:16:20,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-30 00:16:20,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:20,538 INFO L225 Difference]: With dead ends: 43 [2020-11-30 00:16:20,538 INFO L226 Difference]: Without dead ends: 38 [2020-11-30 00:16:20,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:16:20,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-30 00:16:20,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 27. [2020-11-30 00:16:20,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 00:16:20,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-30 00:16:20,544 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 14 [2020-11-30 00:16:20,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:20,544 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-30 00:16:20,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:16:20,544 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-30 00:16:20,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:16:20,545 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:20,545 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:20,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:16:20,545 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:20,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:20,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-11-30 00:16:20,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:16:20,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452014218] [2020-11-30 00:16:20,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:16:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:16:20,581 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:16:20,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:16:20,604 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:16:20,630 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:16:20,630 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:16:20,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 00:16:20,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:16:20 BoogieIcfgContainer [2020-11-30 00:16:20,666 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:16:20,666 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:16:20,666 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:16:20,667 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:16:20,667 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:16:19" (3/4) ... [2020-11-30 00:16:20,671 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:16:20,671 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:16:20,675 INFO L168 Benchmark]: Toolchain (without parser) took 2957.24 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 60.8 MB in the beginning and 77.8 MB in the end (delta: -17.0 MB). Peak memory consumption was 8.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:16:20,676 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 90.2 MB. Free memory was 47.4 MB in the beginning and 47.3 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:16:20,678 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.41 ms. Allocated memory is still 90.2 MB. Free memory was 60.6 MB in the beginning and 67.8 MB in the end (delta: -7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:16:20,685 INFO L168 Benchmark]: Boogie Procedure Inliner took 80.59 ms. Allocated memory is still 90.2 MB. Free memory was 67.8 MB in the beginning and 66.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:16:20,686 INFO L168 Benchmark]: Boogie Preprocessor took 62.94 ms. Allocated memory is still 90.2 MB. Free memory was 66.1 MB in the beginning and 64.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:16:20,687 INFO L168 Benchmark]: RCFGBuilder took 781.34 ms. Allocated memory is still 90.2 MB. Free memory was 64.8 MB in the beginning and 46.7 MB in the end (delta: 18.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:16:20,688 INFO L168 Benchmark]: TraceAbstraction took 1618.26 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 46.3 MB in the beginning and 78.5 MB in the end (delta: -32.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:16:20,691 INFO L168 Benchmark]: Witness Printer took 4.64 ms. Allocated memory is still 115.3 MB. Free memory is still 77.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:16:20,700 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 90.2 MB. Free memory was 47.4 MB in the beginning and 47.3 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 397.41 ms. Allocated memory is still 90.2 MB. Free memory was 60.6 MB in the beginning and 67.8 MB in the end (delta: -7.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 80.59 ms. Allocated memory is still 90.2 MB. Free memory was 67.8 MB in the beginning and 66.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 62.94 ms. Allocated memory is still 90.2 MB. Free memory was 66.1 MB in the beginning and 64.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 781.34 ms. Allocated memory is still 90.2 MB. Free memory was 64.8 MB in the beginning and 46.7 MB in the end (delta: 18.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1618.26 ms. Allocated memory was 90.2 MB in the beginning and 115.3 MB in the end (delta: 25.2 MB). Free memory was 46.3 MB in the beginning and 78.5 MB in the end (delta: -32.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.64 ms. Allocated memory is still 115.3 MB. Free memory is still 77.8 MB. 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 56, overapproximation of someBinaryArithmeticFLOAToperation at line 62. Possible FailurePath: [L62] float x = 0.0f / 0.0f; [L63] float y = 0.0f / 0.0f; [L22] __uint32_t w; [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (w) = gf_u.word [L30] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L32-L33] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L35-L36] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L38] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L41] return 0; [L45] COND TRUE __fpclassify_float(x) == 0 [L46] return y; [L64] float res = fmax_float(x, y); [L56] return x != x; [L66] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1250.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 206 SDtfs, 44 SDslu, 238 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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, 5 MinimizatonAttempts, 44 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 799 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:16:23,609 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:16:23,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:16:23,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:16:23,674 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:16:23,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:16:23,684 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:16:23,689 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:16:23,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:16:23,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:16:23,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:16:23,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:16:23,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:16:23,721 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:16:23,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:16:23,726 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:16:23,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:16:23,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:16:23,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:16:23,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:16:23,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:16:23,750 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:16:23,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:16:23,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:16:23,762 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:16:23,762 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:16:23,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:16:23,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:16:23,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:16:23,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:16:23,768 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:16:23,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:16:23,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:16:23,772 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:16:23,773 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:16:23,774 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:16:23,775 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:16:23,775 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:16:23,775 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:16:23,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:16:23,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:16:23,780 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 00:16:23,830 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:16:23,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:16:23,835 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:16:23,835 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:16:23,835 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:16:23,836 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:16:23,836 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:16:23,836 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:16:23,836 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:16:23,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:16:23,838 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:16:23,838 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:16:23,838 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:16:23,839 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:16:23,839 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:16:23,839 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:16:23,839 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:16:23,840 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:16:23,840 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:16:23,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:16:23,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:16:23,841 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:16:23,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:16:23,841 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:16:23,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:16:23,842 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:16:23,842 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:16:23,842 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:16:23,842 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:16:23,843 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:16:23,843 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:16:23,843 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_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7498db39da300a600c956afc9ee769ef7c520660 [2020-11-30 00:16:24,303 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:16:24,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:16:24,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:16:24,357 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:16:24,357 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:16:24,358 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2020-11-30 00:16:24,466 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/data/f4312ce8f/e8ff06f0db0d4563897edfde9bc4337c/FLAGcc644fa0b [2020-11-30 00:16:25,174 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:16:25,175 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2020-11-30 00:16:25,191 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/data/f4312ce8f/e8ff06f0db0d4563897edfde9bc4337c/FLAGcc644fa0b [2020-11-30 00:16:25,544 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/data/f4312ce8f/e8ff06f0db0d4563897edfde9bc4337c [2020-11-30 00:16:25,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:16:25,550 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:16:25,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:16:25,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:16:25,558 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:16:25,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:16:25" (1/1) ... [2020-11-30 00:16:25,562 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3349b2e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:25, skipping insertion in model container [2020-11-30 00:16:25,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:16:25" (1/1) ... [2020-11-30 00:16:25,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:16:25,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:16:25,817 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:16:25,833 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:16:25,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:16:25,911 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:16:25,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:25 WrapperNode [2020-11-30 00:16:25,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:16:25,915 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:16:25,915 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:16:25,917 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:16:25,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:25" (1/1) ... [2020-11-30 00:16:25,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:25" (1/1) ... [2020-11-30 00:16:25,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:16:25,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:16:25,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:16:25,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:16:26,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:25" (1/1) ... [2020-11-30 00:16:26,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:25" (1/1) ... [2020-11-30 00:16:26,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:25" (1/1) ... [2020-11-30 00:16:26,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:25" (1/1) ... [2020-11-30 00:16:26,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:25" (1/1) ... [2020-11-30 00:16:26,025 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:25" (1/1) ... [2020-11-30 00:16:26,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:25" (1/1) ... [2020-11-30 00:16:26,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:16:26,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:16:26,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:16:26,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:16:26,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/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 [2020-11-30 00:16:26,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:16:26,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:16:26,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 00:16:26,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:16:26,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:16:26,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-30 00:16:26,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:16:26,704 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:16:26,705 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-30 00:16:26,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:16:26 BoogieIcfgContainer [2020-11-30 00:16:26,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:16:26,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:16:26,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:16:26,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:16:26,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:16:25" (1/3) ... [2020-11-30 00:16:26,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f56b61a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:16:26, skipping insertion in model container [2020-11-30 00:16:26,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:16:25" (2/3) ... [2020-11-30 00:16:26,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f56b61a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:16:26, skipping insertion in model container [2020-11-30 00:16:26,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:16:26" (3/3) ... [2020-11-30 00:16:26,714 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2020-11-30 00:16:26,725 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:16:26,730 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 00:16:26,743 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 00:16:26,778 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:16:26,778 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:16:26,778 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:16:26,778 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:16:26,779 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:16:26,779 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:16:26,779 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:16:26,779 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:16:26,794 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-30 00:16:26,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:16:26,800 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:26,801 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:26,801 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:26,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:26,808 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-11-30 00:16:26,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:16:26,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86988096] [2020-11-30 00:16:26,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/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 [2020-11-30 00:16:26,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:26,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 00:16:26,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:26,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:26,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:16:26,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:26,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86988096] [2020-11-30 00:16:26,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:16:26,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 00:16:26,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887167289] [2020-11-30 00:16:26,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:16:26,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:16:26,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:16:26,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:16:26,987 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-30 00:16:27,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:27,004 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-11-30 00:16:27,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:16:27,006 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 00:16:27,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:27,021 INFO L225 Difference]: With dead ends: 55 [2020-11-30 00:16:27,023 INFO L226 Difference]: Without dead ends: 25 [2020-11-30 00:16:27,027 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 [2020-11-30 00:16:27,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-30 00:16:27,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-30 00:16:27,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-30 00:16:27,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-11-30 00:16:27,072 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-11-30 00:16:27,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:27,072 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-11-30 00:16:27,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:16:27,073 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-11-30 00:16:27,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 00:16:27,073 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:27,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:27,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:16:27,287 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:27,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:27,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-11-30 00:16:27,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:16:27,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747514597] [2020-11-30 00:16:27,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/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 [2020-11-30 00:16:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:27,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 00:16:27,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:27,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:27,558 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:16:27,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:27,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747514597] [2020-11-30 00:16:27,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:16:27,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 00:16:27,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008958337] [2020-11-30 00:16:27,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:16:27,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:16:27,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:16:27,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:16:27,599 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2020-11-30 00:16:27,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:27,728 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2020-11-30 00:16:27,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:16:27,730 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-30 00:16:27,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:27,732 INFO L225 Difference]: With dead ends: 52 [2020-11-30 00:16:27,732 INFO L226 Difference]: Without dead ends: 47 [2020-11-30 00:16:27,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:16:27,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-30 00:16:27,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-30 00:16:27,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 00:16:27,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-30 00:16:27,740 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-11-30 00:16:27,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:27,740 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-30 00:16:27,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:16:27,741 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-30 00:16:27,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:16:27,741 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:27,742 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:27,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:16:27,956 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:27,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:27,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-11-30 00:16:27,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:16:27,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1883098907] [2020-11-30 00:16:27,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/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 [2020-11-30 00:16:28,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:28,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 00:16:28,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:28,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:28,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:16:28,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:28,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1883098907] [2020-11-30 00:16:28,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:16:28,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-30 00:16:28,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368249331] [2020-11-30 00:16:28,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 00:16:28,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:16:28,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 00:16:28,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:16:28,314 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2020-11-30 00:16:28,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:28,677 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-11-30 00:16:28,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:16:28,679 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-30 00:16:28,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:28,680 INFO L225 Difference]: With dead ends: 36 [2020-11-30 00:16:28,680 INFO L226 Difference]: Without dead ends: 27 [2020-11-30 00:16:28,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:16:28,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-30 00:16:28,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-11-30 00:16:28,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-30 00:16:28,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2020-11-30 00:16:28,685 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2020-11-30 00:16:28,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:28,686 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2020-11-30 00:16:28,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 00:16:28,686 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-11-30 00:16:28,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:16:28,687 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:28,687 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:28,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 00:16:28,898 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:28,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:28,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2020-11-30 00:16:28,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:16:28,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1847752327] [2020-11-30 00:16:28,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/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 [2020-11-30 00:16:28,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:28,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 00:16:28,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:28,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:28,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:16:29,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:29,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1847752327] [2020-11-30 00:16:29,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:16:29,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 00:16:29,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599933300] [2020-11-30 00:16:29,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:16:29,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:16:29,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:16:29,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:16:29,043 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2020-11-30 00:16:29,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:29,164 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-11-30 00:16:29,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:16:29,165 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-30 00:16:29,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:29,166 INFO L225 Difference]: With dead ends: 52 [2020-11-30 00:16:29,166 INFO L226 Difference]: Without dead ends: 47 [2020-11-30 00:16:29,167 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 [2020-11-30 00:16:29,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-30 00:16:29,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-30 00:16:29,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 00:16:29,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-30 00:16:29,173 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2020-11-30 00:16:29,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:29,173 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-30 00:16:29,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:16:29,181 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-11-30 00:16:29,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:16:29,184 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:29,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:29,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 00:16:29,401 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:29,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:29,402 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2020-11-30 00:16:29,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:16:29,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1335930275] [2020-11-30 00:16:29,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/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 [2020-11-30 00:16:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:29,495 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 00:16:29,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:29,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:29,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:16:29,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:29,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1335930275] [2020-11-30 00:16:29,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:16:29,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-11-30 00:16:29,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481578314] [2020-11-30 00:16:29,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 00:16:29,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:16:29,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 00:16:29,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-30 00:16:29,772 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2020-11-30 00:16:30,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:30,170 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2020-11-30 00:16:30,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:16:30,177 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-11-30 00:16:30,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:30,178 INFO L225 Difference]: With dead ends: 32 [2020-11-30 00:16:30,178 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 00:16:30,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-11-30 00:16:30,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 00:16:30,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-30 00:16:30,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 00:16:30,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-30 00:16:30,184 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2020-11-30 00:16:30,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:30,184 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-30 00:16:30,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 00:16:30,184 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-30 00:16:30,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 00:16:30,185 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:16:30,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:16:30,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 00:16:30,397 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:16:30,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:16:30,398 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2020-11-30 00:16:30,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:16:30,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288801887] [2020-11-30 00:16:30,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/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 [2020-11-30 00:16:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:16:30,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 00:16:30,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:16:30,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:30,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:16:30,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:16:30,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288801887] [2020-11-30 00:16:30,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:16:30,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-30 00:16:30,723 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970603688] [2020-11-30 00:16:30,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 00:16:30,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:16:30,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 00:16:30,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:16:30,725 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2020-11-30 00:16:31,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:16:31,072 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-11-30 00:16:31,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:16:31,072 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-11-30 00:16:31,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:16:31,073 INFO L225 Difference]: With dead ends: 23 [2020-11-30 00:16:31,073 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:16:31,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-30 00:16:31,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:16:31,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:16:31,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:16:31,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:16:31,074 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-30 00:16:31,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:16:31,074 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:16:31,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 00:16:31,075 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:16:31,075 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:16:31,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-30 00:16:31,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:16:31,582 INFO L270 CegarLoopResult]: At program point L56(line 56) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_fmax_float_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y))) [2020-11-30 00:16:31,583 INFO L274 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-11-30 00:16:31,583 INFO L274 CegarLoopResult]: For program point L52-2(line 52) no Hoare annotation was computed. [2020-11-30 00:16:31,583 INFO L270 CegarLoopResult]: At program point L52-3(lines 44 53) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_fmax_float_#res|)) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y))) [2020-11-30 00:16:31,583 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-30 00:16:31,583 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-30 00:16:31,583 INFO L274 CegarLoopResult]: For program point L32(lines 32 41) no Hoare annotation was computed. [2020-11-30 00:16:31,583 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:16:31,583 INFO L274 CegarLoopResult]: For program point L32-1(lines 32 41) no Hoare annotation was computed. [2020-11-30 00:16:31,584 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:16:31,584 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:16:31,584 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 00:16:31,584 INFO L274 CegarLoopResult]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2020-11-30 00:16:31,584 INFO L270 CegarLoopResult]: At program point L24-2(lines 24 28) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y))) [2020-11-30 00:16:31,584 INFO L274 CegarLoopResult]: For program point L24-3(lines 21 42) no Hoare annotation was computed. [2020-11-30 00:16:31,584 INFO L274 CegarLoopResult]: For program point L24-5(lines 24 28) no Hoare annotation was computed. [2020-11-30 00:16:31,584 INFO L270 CegarLoopResult]: At program point L24-6(lines 24 28) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y))) [2020-11-30 00:16:31,585 INFO L274 CegarLoopResult]: For program point L24-7(lines 21 42) no Hoare annotation was computed. [2020-11-30 00:16:31,585 INFO L274 CegarLoopResult]: For program point L49(lines 49 51) no Hoare annotation was computed. [2020-11-30 00:16:31,585 INFO L274 CegarLoopResult]: For program point L45(lines 45 47) no Hoare annotation was computed. [2020-11-30 00:16:31,585 INFO L270 CegarLoopResult]: At program point L41(lines 21 42) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y))) [2020-11-30 00:16:31,585 INFO L270 CegarLoopResult]: At program point L41-1(lines 21 42) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) .cse0) (and (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) .cse0))) [2020-11-30 00:16:31,585 INFO L274 CegarLoopResult]: For program point L66(lines 66 69) no Hoare annotation was computed. [2020-11-30 00:16:31,585 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:16:31,586 INFO L277 CegarLoopResult]: At program point L71(lines 58 72) the Hoare annotation is: true [2020-11-30 00:16:31,586 INFO L274 CegarLoopResult]: For program point L38(lines 38 41) no Hoare annotation was computed. [2020-11-30 00:16:31,586 INFO L274 CegarLoopResult]: For program point L38-1(lines 38 41) no Hoare annotation was computed. [2020-11-30 00:16:31,586 INFO L274 CegarLoopResult]: For program point L35(lines 35 41) no Hoare annotation was computed. [2020-11-30 00:16:31,586 INFO L274 CegarLoopResult]: For program point L35-1(lines 35 41) no Hoare annotation was computed. [2020-11-30 00:16:31,603 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 00:16:31,605 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 00:16:31,611 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 00:16:31,611 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 00:16:31,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:16:31 BoogieIcfgContainer [2020-11-30 00:16:31,617 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:16:31,618 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:16:31,618 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:16:31,619 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:16:31,619 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:16:26" (3/4) ... [2020-11-30 00:16:31,623 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:16:31,638 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-30 00:16:31,639 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-30 00:16:31,639 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 00:16:31,640 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:16:31,672 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~FLOAT(y, y) [2020-11-30 00:16:31,672 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y) [2020-11-30 00:16:31,674 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y)) || (!(0bv32 == \result) && !~fp.eq~FLOAT(y, y)) [2020-11-30 00:16:31,727 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b970de53-e621-4f5f-950c-0b79734f780f/bin/uautomizer/witness.graphml [2020-11-30 00:16:31,728 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:16:31,730 INFO L168 Benchmark]: Toolchain (without parser) took 6178.71 ms. Allocated memory was 58.7 MB in the beginning and 88.1 MB in the end (delta: 29.4 MB). Free memory was 36.9 MB in the beginning and 48.0 MB in the end (delta: -11.1 MB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:16:31,731 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 58.7 MB. Free memory is still 40.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:16:31,732 INFO L168 Benchmark]: CACSL2BoogieTranslator took 359.65 ms. Allocated memory is still 58.7 MB. Free memory was 36.7 MB in the beginning and 26.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:16:31,734 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.76 ms. Allocated memory is still 58.7 MB. Free memory was 26.3 MB in the beginning and 41.3 MB in the end (delta: -15.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:16:31,735 INFO L168 Benchmark]: Boogie Preprocessor took 32.58 ms. Allocated memory is still 58.7 MB. Free memory was 41.3 MB in the beginning and 39.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:16:31,735 INFO L168 Benchmark]: RCFGBuilder took 673.70 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 39.7 MB in the beginning and 51.8 MB in the end (delta: -12.1 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:16:31,736 INFO L168 Benchmark]: TraceAbstraction took 4909.27 ms. Allocated memory was 71.3 MB in the beginning and 88.1 MB in the end (delta: 16.8 MB). Free memory was 51.2 MB in the beginning and 51.4 MB in the end (delta: -216.1 kB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:16:31,736 INFO L168 Benchmark]: Witness Printer took 109.38 ms. Allocated memory is still 88.1 MB. Free memory was 51.4 MB in the beginning and 48.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:16:31,739 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 58.7 MB. Free memory is still 40.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 359.65 ms. Allocated memory is still 58.7 MB. Free memory was 36.7 MB in the beginning and 26.3 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.76 ms. Allocated memory is still 58.7 MB. Free memory was 26.3 MB in the beginning and 41.3 MB in the end (delta: -15.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.58 ms. Allocated memory is still 58.7 MB. Free memory was 41.3 MB in the beginning and 39.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 673.70 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 39.7 MB in the beginning and 51.8 MB in the end (delta: -12.1 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4909.27 ms. Allocated memory was 71.3 MB in the beginning and 88.1 MB in the end (delta: 16.8 MB). Free memory was 51.2 MB in the beginning and 51.4 MB in the end (delta: -216.1 kB). Peak memory consumption was 15.7 MB. Max. memory is 16.1 GB. * Witness Printer took 109.38 ms. Allocated memory is still 88.1 MB. Free memory was 51.4 MB in the beginning and 48.0 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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: 24]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 44]: Loop Invariant [2020-11-30 00:16:31,755 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 00:16:31,756 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 56]: Loop Invariant [2020-11-30 00:16:31,757 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-30 00:16:31,758 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (!~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y)) || (!(0bv32 == \result) && !~fp.eq~FLOAT(y, y)) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.4s, 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, 1.6s 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, 74 HoareAnnotationTreeSize, 7 FomulaSimplifications, 231 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8446 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...