./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/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 c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_2675530d-2867-4b31-afe3-7a77ebcec61c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/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 c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 15:56:23,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:56:23,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:56:23,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:56:23,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:56:23,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:56:23,124 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:56:23,135 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:56:23,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:56:23,148 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:56:23,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:56:23,153 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:56:23,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:56:23,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:56:23,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:56:23,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:56:23,164 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:56:23,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:56:23,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:56:23,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:56:23,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:56:23,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:56:23,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:56:23,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:56:23,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:56:23,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:56:23,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:56:23,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:56:23,208 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:56:23,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:56:23,210 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:56:23,212 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:56:23,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:56:23,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:56:23,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:56:23,218 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:56:23,219 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:56:23,219 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:56:23,220 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:56:23,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:56:23,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:56:23,227 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:56:23,274 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:56:23,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:56:23,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:56:23,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:56:23,279 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:56:23,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:56:23,279 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:56:23,279 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:56:23,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:56:23,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:56:23,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:56:23,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:56:23,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:56:23,282 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:56:23,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:56:23,283 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:56:23,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:56:23,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:56:23,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:56:23,284 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:56:23,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:56:23,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:56:23,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:56:23,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:56:23,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:56:23,286 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:56:23,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:56:23,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:56:23,287 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:56:23,287 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_2675530d-2867-4b31-afe3-7a77ebcec61c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 [2020-12-01 15:56:23,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:56:23,619 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:56:23,621 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:56:23,623 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:56:23,624 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:56:23,625 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2020-12-01 15:56:23,723 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/bin/uautomizer/data/e5ad54878/4f5322efeb264539b9ab8ab01109f097/FLAG3d7d8292b [2020-12-01 15:56:24,248 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:56:24,249 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2020-12-01 15:56:24,263 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/bin/uautomizer/data/e5ad54878/4f5322efeb264539b9ab8ab01109f097/FLAG3d7d8292b [2020-12-01 15:56:24,624 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/bin/uautomizer/data/e5ad54878/4f5322efeb264539b9ab8ab01109f097 [2020-12-01 15:56:24,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:56:24,632 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:56:24,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:56:24,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:56:24,639 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:56:24,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:56:24" (1/1) ... [2020-12-01 15:56:24,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc7c202 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:24, skipping insertion in model container [2020-12-01 15:56:24,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:56:24" (1/1) ... [2020-12-01 15:56:24,653 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:56:24,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:56:24,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:56:24,998 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:56:25,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:56:25,051 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:56:25,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:25 WrapperNode [2020-12-01 15:56:25,053 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:56:25,055 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:56:25,055 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:56:25,055 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:56:25,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:25" (1/1) ... [2020-12-01 15:56:25,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:25" (1/1) ... [2020-12-01 15:56:25,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:56:25,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:56:25,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:56:25,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:56:25,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:25" (1/1) ... [2020-12-01 15:56:25,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:25" (1/1) ... [2020-12-01 15:56:25,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:25" (1/1) ... [2020-12-01 15:56:25,161 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:25" (1/1) ... [2020-12-01 15:56:25,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:25" (1/1) ... [2020-12-01 15:56:25,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:25" (1/1) ... [2020-12-01 15:56:25,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:25" (1/1) ... [2020-12-01 15:56:25,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:56:25,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:56:25,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:56:25,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:56:25,186 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/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 [2020-12-01 15:56:25,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:56:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:56:25,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-01 15:56:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:56:25,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:56:25,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-01 15:56:25,287 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:56:25,810 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:56:25,811 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-12-01 15:56:25,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:56:25 BoogieIcfgContainer [2020-12-01 15:56:25,813 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:56:25,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:56:25,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:56:25,819 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:56:25,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:56:24" (1/3) ... [2020-12-01 15:56:25,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee60e0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:56:25, skipping insertion in model container [2020-12-01 15:56:25,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:25" (2/3) ... [2020-12-01 15:56:25,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ee60e0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:56:25, skipping insertion in model container [2020-12-01 15:56:25,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:56:25" (3/3) ... [2020-12-01 15:56:25,823 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2020-12-01 15:56:25,841 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:56:25,845 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:56:25,859 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 15:56:25,895 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:56:25,895 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:56:25,895 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:56:25,895 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:56:25,896 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:56:25,896 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:56:25,896 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:56:25,896 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:56:25,919 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-12-01 15:56:25,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 15:56:25,928 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:56:25,929 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:56:25,930 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:56:25,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:56:25,937 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-12-01 15:56:25,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:56:25,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31038399] [2020-12-01 15:56:25,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:56:26,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:56:26,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:26,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31038399] [2020-12-01 15:56:26,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:56:26,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-01 15:56:26,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369881556] [2020-12-01 15:56:26,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:56:26,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:56:26,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:56:26,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:56:26,137 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-12-01 15:56:26,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:56:26,161 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-12-01 15:56:26,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:56:26,162 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-01 15:56:26,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:56:26,188 INFO L225 Difference]: With dead ends: 63 [2020-12-01 15:56:26,188 INFO L226 Difference]: Without dead ends: 29 [2020-12-01 15:56:26,192 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 [2020-12-01 15:56:26,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-01 15:56:26,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-01 15:56:26,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-01 15:56:26,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-12-01 15:56:26,235 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-12-01 15:56:26,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:56:26,236 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-12-01 15:56:26,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:56:26,236 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-12-01 15:56:26,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:56:26,237 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:56:26,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:56:26,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:56:26,238 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:56:26,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:56:26,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-12-01 15:56:26,240 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:56:26,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505224873] [2020-12-01 15:56:26,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:56:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:56:26,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:26,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505224873] [2020-12-01 15:56:26,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:56:26,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:56:26,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902750983] [2020-12-01 15:56:26,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:56:26,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:56:26,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:56:26,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:56:26,396 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 4 states. [2020-12-01 15:56:26,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:56:26,513 INFO L93 Difference]: Finished difference Result 53 states and 67 transitions. [2020-12-01 15:56:26,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:56:26,516 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-01 15:56:26,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:56:26,517 INFO L225 Difference]: With dead ends: 53 [2020-12-01 15:56:26,518 INFO L226 Difference]: Without dead ends: 44 [2020-12-01 15:56:26,519 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 [2020-12-01 15:56:26,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-12-01 15:56:26,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 31. [2020-12-01 15:56:26,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-01 15:56:26,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-01 15:56:26,527 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-12-01 15:56:26,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:56:26,527 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-01 15:56:26,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:56:26,528 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-01 15:56:26,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-01 15:56:26,528 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:56:26,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:56:26,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:56:26,529 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:56:26,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:56:26,530 INFO L82 PathProgramCache]: Analyzing trace with hash 502201410, now seen corresponding path program 1 times [2020-12-01 15:56:26,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:56:26,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794342973] [2020-12-01 15:56:26,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:56:26,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:56:26,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:26,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794342973] [2020-12-01 15:56:26,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:56:26,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:56:26,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879822942] [2020-12-01 15:56:26,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:56:26,675 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:56:26,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:56:26,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:56:26,676 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-12-01 15:56:26,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:56:26,780 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-12-01 15:56:26,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:56:26,781 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-12-01 15:56:26,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:56:26,787 INFO L225 Difference]: With dead ends: 55 [2020-12-01 15:56:26,787 INFO L226 Difference]: Without dead ends: 46 [2020-12-01 15:56:26,790 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 [2020-12-01 15:56:26,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-01 15:56:26,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-12-01 15:56:26,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-01 15:56:26,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-01 15:56:26,798 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 12 [2020-12-01 15:56:26,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:56:26,798 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-01 15:56:26,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:56:26,799 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-01 15:56:26,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-01 15:56:26,799 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:56:26,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:56:26,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:56:26,800 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:56:26,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:56:26,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1951233721, now seen corresponding path program 1 times [2020-12-01 15:56:26,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:56:26,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942993118] [2020-12-01 15:56:26,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:56:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:56:26,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:26,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942993118] [2020-12-01 15:56:26,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:56:26,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:56:26,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26520527] [2020-12-01 15:56:26,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:56:26,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:56:26,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:56:26,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:56:26,900 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-12-01 15:56:26,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:56:26,952 INFO L93 Difference]: Finished difference Result 57 states and 71 transitions. [2020-12-01 15:56:26,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:56:26,952 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-12-01 15:56:26,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:56:26,954 INFO L225 Difference]: With dead ends: 57 [2020-12-01 15:56:26,954 INFO L226 Difference]: Without dead ends: 48 [2020-12-01 15:56:26,955 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 [2020-12-01 15:56:26,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-12-01 15:56:26,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 31. [2020-12-01 15:56:26,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-01 15:56:26,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-01 15:56:26,962 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 13 [2020-12-01 15:56:26,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:56:26,963 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-01 15:56:26,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:56:26,963 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-01 15:56:26,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 15:56:26,966 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:56:26,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:56:26,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 15:56:26,967 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:56:26,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:56:26,969 INFO L82 PathProgramCache]: Analyzing trace with hash -555760345, now seen corresponding path program 1 times [2020-12-01 15:56:26,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:56:26,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970601058] [2020-12-01 15:56:26,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:56:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:56:27,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:27,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970601058] [2020-12-01 15:56:27,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:56:27,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 15:56:27,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257366222] [2020-12-01 15:56:27,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:56:27,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:56:27,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:56:27,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:56:27,081 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-12-01 15:56:27,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:56:27,152 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2020-12-01 15:56:27,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:56:27,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-12-01 15:56:27,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:56:27,154 INFO L225 Difference]: With dead ends: 55 [2020-12-01 15:56:27,154 INFO L226 Difference]: Without dead ends: 46 [2020-12-01 15:56:27,155 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 [2020-12-01 15:56:27,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-01 15:56:27,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 31. [2020-12-01 15:56:27,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-01 15:56:27,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-01 15:56:27,161 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 14 [2020-12-01 15:56:27,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:56:27,162 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-01 15:56:27,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:56:27,162 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-01 15:56:27,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 15:56:27,163 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:56:27,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:56:27,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 15:56:27,164 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:56:27,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:56:27,164 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-12-01 15:56:27,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:56:27,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552437552] [2020-12-01 15:56:27,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:56:27,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:56:27,201 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:56:27,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:56:27,226 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:56:27,254 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:56:27,254 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 15:56:27,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 15:56:27,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:56:27 BoogieIcfgContainer [2020-12-01 15:56:27,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:56:27,310 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:56:27,310 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:56:27,311 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:56:27,311 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:56:25" (3/4) ... [2020-12-01 15:56:27,315 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-01 15:56:27,315 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:56:27,318 INFO L168 Benchmark]: Toolchain (without parser) took 2683.98 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 61.4 MB in the beginning and 78.0 MB in the end (delta: -16.6 MB). Peak memory consumption was 4.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:56:27,319 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 71.3 MB. Free memory was 33.5 MB in the beginning and 33.5 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:56:27,320 INFO L168 Benchmark]: CACSL2BoogieTranslator took 418.72 ms. Allocated memory is still 92.3 MB. Free memory was 61.2 MB in the beginning and 69.0 MB in the end (delta: -7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:56:27,321 INFO L168 Benchmark]: Boogie Procedure Inliner took 71.72 ms. Allocated memory is still 92.3 MB. Free memory was 69.0 MB in the beginning and 67.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:56:27,322 INFO L168 Benchmark]: Boogie Preprocessor took 55.73 ms. Allocated memory is still 92.3 MB. Free memory was 67.1 MB in the beginning and 65.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:56:27,323 INFO L168 Benchmark]: RCFGBuilder took 629.21 ms. Allocated memory is still 92.3 MB. Free memory was 65.5 MB in the beginning and 44.8 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-12-01 15:56:27,325 INFO L168 Benchmark]: TraceAbstraction took 1487.97 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 44.4 MB in the beginning and 78.0 MB in the end (delta: -33.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:56:27,325 INFO L168 Benchmark]: Witness Printer took 5.47 ms. Allocated memory is still 113.2 MB. Free memory is still 78.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:56:27,332 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 71.3 MB. Free memory was 33.5 MB in the beginning and 33.5 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 418.72 ms. Allocated memory is still 92.3 MB. Free memory was 61.2 MB in the beginning and 69.0 MB in the end (delta: -7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 71.72 ms. Allocated memory is still 92.3 MB. Free memory was 69.0 MB in the beginning and 67.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.73 ms. Allocated memory is still 92.3 MB. Free memory was 67.1 MB in the beginning and 65.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 629.21 ms. Allocated memory is still 92.3 MB. Free memory was 65.5 MB in the beginning and 44.8 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1487.97 ms. Allocated memory was 92.3 MB in the beginning and 113.2 MB in the end (delta: 21.0 MB). Free memory was 44.4 MB in the beginning and 78.0 MB in the end (delta: -33.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.47 ms. Allocated memory is still 113.2 MB. Free memory is still 78.0 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 someBinaryDOUBLEComparisonOperation at line 81, overapproximation of someUnaryDOUBLEoperation at line 76. Possible FailurePath: [L76] double x = -0.0; [L77] double y = 0.0; [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L33-L34] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L36-L37] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L40-L41] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L44] return 0; [L48] COND TRUE __fpclassify_double(x) == 0 [L49] return y; [L78] double res = fmin_double(x, y); [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_1232b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 251 SDtfs, 64 SDslu, 298 SDs, 0 SdLazy, 84 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=33occurred 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, 60 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 0.2.0-69874e2 [2020-12-01 15:56:30,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:56:30,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:56:30,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:56:30,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:56:30,682 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:56:30,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:56:30,688 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:56:30,692 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:56:30,695 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:56:30,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:56:30,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:56:30,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:56:30,714 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:56:30,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:56:30,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:56:30,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:56:30,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:56:30,724 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:56:30,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:56:30,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:56:30,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:56:30,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:56:30,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:56:30,745 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:56:30,745 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:56:30,746 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:56:30,748 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:56:30,748 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:56:30,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:56:30,762 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:56:30,763 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:56:30,765 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:56:30,766 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:56:30,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:56:30,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:56:30,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:56:30,770 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:56:30,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:56:30,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:56:30,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:56:30,777 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-12-01 15:56:30,839 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:56:30,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:56:30,841 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:56:30,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:56:30,842 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:56:30,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:56:30,843 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:56:30,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:56:30,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:56:30,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:56:30,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:56:30,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:56:30,844 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-01 15:56:30,844 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-01 15:56:30,844 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:56:30,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:56:30,845 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:56:30,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:56:30,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:56:30,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:56:30,846 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:56:30,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:56:30,847 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:56:30,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:56:30,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:56:30,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:56:30,848 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-12-01 15:56:30,848 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-12-01 15:56:30,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:56:30,848 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:56:30,849 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-01 15:56:30,849 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_2675530d-2867-4b31-afe3-7a77ebcec61c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 [2020-12-01 15:56:31,382 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:56:31,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:56:31,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:56:31,423 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:56:31,425 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:56:31,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2020-12-01 15:56:31,527 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/bin/uautomizer/data/552220e0b/28cacb788e9b4aa2821319f49b240b8f/FLAGb309a85b6 [2020-12-01 15:56:32,300 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:56:32,302 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2020-12-01 15:56:32,312 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/bin/uautomizer/data/552220e0b/28cacb788e9b4aa2821319f49b240b8f/FLAGb309a85b6 [2020-12-01 15:56:32,642 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/bin/uautomizer/data/552220e0b/28cacb788e9b4aa2821319f49b240b8f [2020-12-01 15:56:32,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:56:32,647 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:56:32,649 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:56:32,649 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:56:32,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:56:32,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:56:32" (1/1) ... [2020-12-01 15:56:32,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3efdea80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:32, skipping insertion in model container [2020-12-01 15:56:32,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:56:32" (1/1) ... [2020-12-01 15:56:32,671 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:56:32,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:56:32,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:56:32,948 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:56:32,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:56:33,025 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:56:33,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:33 WrapperNode [2020-12-01 15:56:33,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:56:33,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:56:33,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:56:33,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:56:33,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:33" (1/1) ... [2020-12-01 15:56:33,098 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:33" (1/1) ... [2020-12-01 15:56:33,160 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:56:33,161 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:56:33,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:56:33,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:56:33,174 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:33" (1/1) ... [2020-12-01 15:56:33,174 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:33" (1/1) ... [2020-12-01 15:56:33,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:33" (1/1) ... [2020-12-01 15:56:33,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:33" (1/1) ... [2020-12-01 15:56:33,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:33" (1/1) ... [2020-12-01 15:56:33,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:33" (1/1) ... [2020-12-01 15:56:33,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:33" (1/1) ... [2020-12-01 15:56:33,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:56:33,209 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:56:33,209 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:56:33,209 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:56:33,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/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 [2020-12-01 15:56:33,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-12-01 15:56:33,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-01 15:56:33,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:56:33,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-12-01 15:56:33,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:56:33,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:56:33,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-01 15:56:34,215 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:56:34,216 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-12-01 15:56:34,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:56:34 BoogieIcfgContainer [2020-12-01 15:56:34,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:56:34,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:56:34,244 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:56:34,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:56:34,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:56:32" (1/3) ... [2020-12-01 15:56:34,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d60eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:56:34, skipping insertion in model container [2020-12-01 15:56:34,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:56:33" (2/3) ... [2020-12-01 15:56:34,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d60eb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:56:34, skipping insertion in model container [2020-12-01 15:56:34,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:56:34" (3/3) ... [2020-12-01 15:56:34,253 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2020-12-01 15:56:34,273 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:56:34,278 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:56:34,294 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 15:56:34,329 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:56:34,329 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:56:34,329 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:56:34,330 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:56:34,330 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:56:34,330 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:56:34,330 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:56:34,330 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:56:34,348 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-12-01 15:56:34,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 15:56:34,356 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:56:34,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:56:34,358 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:56:34,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:56:34,366 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-12-01 15:56:34,382 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:56:34,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1377875468] [2020-12-01 15:56:34,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/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 [2020-12-01 15:56:34,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:56:34,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-01 15:56:34,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:56:34,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:34,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:56:34,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:34,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1377875468] [2020-12-01 15:56:34,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:56:34,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-01 15:56:34,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996217204] [2020-12-01 15:56:34,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-01 15:56:34,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:56:34,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-01 15:56:34,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-01 15:56:34,699 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-12-01 15:56:34,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:56:34,753 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-12-01 15:56:34,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-01 15:56:34,755 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-01 15:56:34,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:56:34,768 INFO L225 Difference]: With dead ends: 63 [2020-12-01 15:56:34,769 INFO L226 Difference]: Without dead ends: 29 [2020-12-01 15:56:34,775 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 [2020-12-01 15:56:34,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-01 15:56:34,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-12-01 15:56:34,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-12-01 15:56:34,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-12-01 15:56:34,832 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-12-01 15:56:34,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:56:34,833 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-12-01 15:56:34,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-01 15:56:34,833 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-12-01 15:56:34,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-01 15:56:34,835 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:56:34,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:56:35,057 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-01 15:56:35,057 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:56:35,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:56:35,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-12-01 15:56:35,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:56:35,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1039976358] [2020-12-01 15:56:35,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/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 [2020-12-01 15:56:35,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:56:35,264 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 15:56:35,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:56:35,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:35,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:56:35,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:35,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1039976358] [2020-12-01 15:56:35,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:56:35,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-01 15:56:35,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078140004] [2020-12-01 15:56:35,382 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:56:35,382 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:56:35,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:56:35,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:56:35,385 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2020-12-01 15:56:35,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:56:35,563 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-12-01 15:56:35,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:56:35,578 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-01 15:56:35,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:56:35,580 INFO L225 Difference]: With dead ends: 68 [2020-12-01 15:56:35,580 INFO L226 Difference]: Without dead ends: 59 [2020-12-01 15:56:35,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:56:35,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-12-01 15:56:35,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2020-12-01 15:56:35,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-01 15:56:35,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-12-01 15:56:35,598 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-12-01 15:56:35,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:56:35,599 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-12-01 15:56:35,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:56:35,600 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-12-01 15:56:35,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 15:56:35,601 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:56:35,602 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:56:35,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-01 15:56:35,817 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:56:35,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:56:35,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-12-01 15:56:35,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:56:35,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1639883448] [2020-12-01 15:56:35,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/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 [2020-12-01 15:56:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:56:35,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-01 15:56:35,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:56:36,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:36,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:56:36,200 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-01 15:56:36,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:36,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1639883448] [2020-12-01 15:56:36,320 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:56:36,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-01 15:56:36,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454433429] [2020-12-01 15:56:36,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:56:36,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:56:36,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:56:36,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:56:36,324 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2020-12-01 15:56:36,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:56:36,594 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-12-01 15:56:36,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 15:56:36,598 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-01 15:56:36,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:56:36,599 INFO L225 Difference]: With dead ends: 52 [2020-12-01 15:56:36,599 INFO L226 Difference]: Without dead ends: 28 [2020-12-01 15:56:36,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-01 15:56:36,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-12-01 15:56:36,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-12-01 15:56:36,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-01 15:56:36,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2020-12-01 15:56:36,611 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2020-12-01 15:56:36,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:56:36,613 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2020-12-01 15:56:36,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:56:36,613 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2020-12-01 15:56:36,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-01 15:56:36,617 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:56:36,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:56:36,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-01 15:56:36,830 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:56:36,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:56:36,831 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-12-01 15:56:36,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:56:36,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [377182640] [2020-12-01 15:56:36,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/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 [2020-12-01 15:56:36,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:56:36,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 15:56:36,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:56:37,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:37,028 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:56:37,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:37,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [377182640] [2020-12-01 15:56:37,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:56:37,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-12-01 15:56:37,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706206557] [2020-12-01 15:56:37,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 15:56:37,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:56:37,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 15:56:37,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 15:56:37,066 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2020-12-01 15:56:37,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:56:37,232 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-12-01 15:56:37,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 15:56:37,233 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-12-01 15:56:37,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:56:37,235 INFO L225 Difference]: With dead ends: 65 [2020-12-01 15:56:37,235 INFO L226 Difference]: Without dead ends: 56 [2020-12-01 15:56:37,236 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 [2020-12-01 15:56:37,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-01 15:56:37,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2020-12-01 15:56:37,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-01 15:56:37,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-12-01 15:56:37,245 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2020-12-01 15:56:37,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:56:37,245 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-12-01 15:56:37,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 15:56:37,246 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-12-01 15:56:37,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 15:56:37,247 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:56:37,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:56:37,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-01 15:56:37,458 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:56:37,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:56:37,459 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-12-01 15:56:37,460 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:56:37,460 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1554038504] [2020-12-01 15:56:37,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/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 [2020-12-01 15:56:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:56:37,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-01 15:56:37,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:56:37,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:37,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:56:37,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:37,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1554038504] [2020-12-01 15:56:37,793 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:56:37,793 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-12-01 15:56:37,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222476779] [2020-12-01 15:56:37,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 15:56:37,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:56:37,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 15:56:37,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:56:37,797 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 4 states. [2020-12-01 15:56:37,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:56:37,830 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2020-12-01 15:56:37,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:56:37,832 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-12-01 15:56:37,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:56:37,833 INFO L225 Difference]: With dead ends: 40 [2020-12-01 15:56:37,834 INFO L226 Difference]: Without dead ends: 30 [2020-12-01 15:56:37,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-01 15:56:37,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-12-01 15:56:37,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-12-01 15:56:37,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-12-01 15:56:37,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-12-01 15:56:37,844 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2020-12-01 15:56:37,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:56:37,844 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-12-01 15:56:37,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 15:56:37,845 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-12-01 15:56:37,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 15:56:37,846 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:56:37,846 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:56:38,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-01 15:56:38,068 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:56:38,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:56:38,069 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-12-01 15:56:38,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:56:38,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107424083] [2020-12-01 15:56:38,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/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 [2020-12-01 15:56:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:56:38,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-01 15:56:38,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:56:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:38,311 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:56:38,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:38,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107424083] [2020-12-01 15:56:38,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:56:38,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-12-01 15:56:38,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907396080] [2020-12-01 15:56:38,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 15:56:38,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:56:38,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 15:56:38,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-01 15:56:38,423 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 9 states. [2020-12-01 15:56:38,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:56:38,952 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-12-01 15:56:38,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 15:56:38,952 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-12-01 15:56:38,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:56:38,953 INFO L225 Difference]: With dead ends: 42 [2020-12-01 15:56:38,953 INFO L226 Difference]: Without dead ends: 39 [2020-12-01 15:56:38,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-12-01 15:56:38,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-01 15:56:38,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-12-01 15:56:38,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-01 15:56:38,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-12-01 15:56:38,960 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2020-12-01 15:56:38,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:56:38,961 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-12-01 15:56:38,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 15:56:38,961 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-12-01 15:56:38,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-01 15:56:38,962 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:56:38,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:56:39,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-01 15:56:39,181 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:56:39,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:56:39,182 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2020-12-01 15:56:39,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:56:39,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [193578067] [2020-12-01 15:56:39,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-01 15:56:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:56:39,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-01 15:56:39,380 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 15:56:39,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:39,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-01 15:56:39,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:56:39,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [193578067] [2020-12-01 15:56:39,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:56:39,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-12-01 15:56:39,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363809816] [2020-12-01 15:56:39,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 15:56:39,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-12-01 15:56:39,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 15:56:39,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-01 15:56:39,649 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2020-12-01 15:56:39,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:56:39,856 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-12-01 15:56:39,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 15:56:39,858 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-12-01 15:56:39,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:56:39,858 INFO L225 Difference]: With dead ends: 45 [2020-12-01 15:56:39,859 INFO L226 Difference]: Without dead ends: 27 [2020-12-01 15:56:39,859 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-12-01 15:56:39,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-12-01 15:56:39,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-12-01 15:56:39,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-01 15:56:39,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-12-01 15:56:39,865 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2020-12-01 15:56:39,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:56:39,866 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-12-01 15:56:39,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 15:56:39,866 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-12-01 15:56:39,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-01 15:56:39,868 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:56:39,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 15:56:40,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-01 15:56:40,092 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:56:40,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:56:40,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-12-01 15:56:40,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-12-01 15:56:40,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2136495925] [2020-12-01 15:56:40,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-01 15:56:40,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:56:40,431 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:56:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:56:40,744 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:56:40,825 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-12-01 15:56:40,826 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 15:56:41,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-01 15:56:41,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:56:41 BoogieIcfgContainer [2020-12-01 15:56:41,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:56:41,115 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:56:41,115 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:56:41,115 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:56:41,116 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:56:34" (3/4) ... [2020-12-01 15:56:41,119 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 15:56:41,217 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_2675530d-2867-4b31-afe3-7a77ebcec61c/bin/uautomizer/witness.graphml [2020-12-01 15:56:41,224 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:56:41,229 INFO L168 Benchmark]: Toolchain (without parser) took 8578.45 ms. Allocated memory was 71.3 MB in the beginning and 94.4 MB in the end (delta: 23.1 MB). Free memory was 56.5 MB in the beginning and 74.1 MB in the end (delta: -17.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:56:41,229 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 71.3 MB. Free memory is still 53.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:56:41,231 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.50 ms. Allocated memory is still 71.3 MB. Free memory was 56.2 MB in the beginning and 45.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:56:41,233 INFO L168 Benchmark]: Boogie Procedure Inliner took 132.29 ms. Allocated memory is still 71.3 MB. Free memory was 45.1 MB in the beginning and 55.0 MB in the end (delta: -9.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-01 15:56:41,234 INFO L168 Benchmark]: Boogie Preprocessor took 46.20 ms. Allocated memory is still 71.3 MB. Free memory was 55.0 MB in the beginning and 53.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:56:41,235 INFO L168 Benchmark]: RCFGBuilder took 1009.69 ms. Allocated memory is still 71.3 MB. Free memory was 53.4 MB in the beginning and 31.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-12-01 15:56:41,235 INFO L168 Benchmark]: TraceAbstraction took 6869.78 ms. Allocated memory was 71.3 MB in the beginning and 94.4 MB in the end (delta: 23.1 MB). Free memory was 54.5 MB in the beginning and 76.2 MB in the end (delta: -21.8 MB). Peak memory consumption was 53.4 MB. Max. memory is 16.1 GB. [2020-12-01 15:56:41,236 INFO L168 Benchmark]: Witness Printer took 110.09 ms. Allocated memory is still 94.4 MB. Free memory was 76.2 MB in the beginning and 74.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:56:41,239 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 71.3 MB. Free memory is still 53.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 378.50 ms. Allocated memory is still 71.3 MB. Free memory was 56.2 MB in the beginning and 45.1 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 132.29 ms. Allocated memory is still 71.3 MB. Free memory was 45.1 MB in the beginning and 55.0 MB in the end (delta: -9.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.20 ms. Allocated memory is still 71.3 MB. Free memory was 55.0 MB in the beginning and 53.4 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1009.69 ms. Allocated memory is still 71.3 MB. Free memory was 53.4 MB in the beginning and 31.7 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6869.78 ms. Allocated memory was 71.3 MB in the beginning and 94.4 MB in the end (delta: 23.1 MB). Free memory was 54.5 MB in the beginning and 76.2 MB in the end (delta: -21.8 MB). Peak memory consumption was 53.4 MB. Max. memory is 16.1 GB. * Witness Printer took 110.09 ms. Allocated memory is still 94.4 MB. Free memory was 76.2 MB in the beginning and 74.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L76] double x = -0.0; [L77] double y = 0.0; [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L32] return 2; [L48] COND FALSE !(__fpclassify_double(x) == 0) [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L32] return 2; [L50] COND FALSE !(__fpclassify_double(y) == 0) [L53] EXPR x < y ? x : y [L53] return x < y ? x : y; [L78] double res = fmin_double(x, y); [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L57] __uint32_t msw; [L60] ieee_double_shape_type gh_u; [L61] gh_u.value = (x) [L62] EXPR gh_u.parts.msw [L62] (msw) = gh_u.parts.msw [L65] return (msw & 0x80000000) != 0; [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_1232b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 257 SDslu, 359 SDs, 0 SdLazy, 130 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 168 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 7 MinimizatonAttempts, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 15 QuantifiedInterpolants, 10714 SizeOfPredicates, 27 NumberOfNonLiveVariables, 463 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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 incorrect! Received shutdown request...