./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1252a_true-unreach-call.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b649b8f673a0a47da0b16e77db6ba5e693ee3ba7 ............................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1252a_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b649b8f673a0a47da0b16e77db6ba5e693ee3ba7 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-09 01:50:18,321 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 01:50:18,322 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 01:50:18,328 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 01:50:18,328 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 01:50:18,329 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 01:50:18,330 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 01:50:18,331 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 01:50:18,331 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 01:50:18,332 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 01:50:18,332 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 01:50:18,332 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 01:50:18,333 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 01:50:18,333 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 01:50:18,334 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 01:50:18,334 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 01:50:18,335 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 01:50:18,336 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 01:50:18,337 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 01:50:18,337 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 01:50:18,338 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 01:50:18,339 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 01:50:18,340 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 01:50:18,340 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 01:50:18,340 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 01:50:18,341 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 01:50:18,341 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 01:50:18,342 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 01:50:18,342 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 01:50:18,343 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 01:50:18,343 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 01:50:18,343 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 01:50:18,344 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 01:50:18,344 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 01:50:18,344 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 01:50:18,345 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 01:50:18,345 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-09 01:50:18,352 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 01:50:18,352 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 01:50:18,353 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 01:50:18,353 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 01:50:18,353 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 01:50:18,354 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 01:50:18,354 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 01:50:18,354 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 01:50:18,354 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 01:50:18,354 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 01:50:18,354 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 01:50:18,354 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 01:50:18,354 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 01:50:18,354 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 01:50:18,355 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 01:50:18,355 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 01:50:18,355 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 01:50:18,355 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 01:50:18,355 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 01:50:18,355 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 01:50:18,355 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 01:50:18,355 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 01:50:18,355 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 01:50:18,355 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 01:50:18,356 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 01:50:18,356 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 01:50:18,356 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 01:50:18,356 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 01:50:18,356 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 01:50:18,356 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 01:50:18,356 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/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(__VERIFIER_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 -> b649b8f673a0a47da0b16e77db6ba5e693ee3ba7 [2018-12-09 01:50:18,374 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 01:50:18,383 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 01:50:18,385 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 01:50:18,386 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 01:50:18,387 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 01:50:18,387 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1252a_true-unreach-call.c [2018-12-09 01:50:18,431 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer/data/a57ffa6bf/f0236b8a0d01419eab8d8a3676569e4e/FLAG10ad1b383 [2018-12-09 01:50:18,784 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 01:50:18,784 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/sv-benchmarks/c/float-newlib/double_req_bl_1252a_true-unreach-call.c [2018-12-09 01:50:18,788 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer/data/a57ffa6bf/f0236b8a0d01419eab8d8a3676569e4e/FLAG10ad1b383 [2018-12-09 01:50:18,796 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer/data/a57ffa6bf/f0236b8a0d01419eab8d8a3676569e4e [2018-12-09 01:50:18,797 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 01:50:18,798 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 01:50:18,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 01:50:18,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 01:50:18,801 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 01:50:18,801 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:50:18" (1/1) ... [2018-12-09 01:50:18,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e9f86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:18, skipping insertion in model container [2018-12-09 01:50:18,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:50:18" (1/1) ... [2018-12-09 01:50:18,807 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 01:50:18,817 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 01:50:18,909 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:50:18,911 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 01:50:18,926 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:50:18,938 INFO L195 MainTranslator]: Completed translation [2018-12-09 01:50:18,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:18 WrapperNode [2018-12-09 01:50:18,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 01:50:18,939 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 01:50:18,939 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 01:50:18,939 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 01:50:18,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:18" (1/1) ... [2018-12-09 01:50:18,949 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:18" (1/1) ... [2018-12-09 01:50:18,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 01:50:18,982 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 01:50:18,982 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 01:50:18,982 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 01:50:18,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:18" (1/1) ... [2018-12-09 01:50:18,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:18" (1/1) ... [2018-12-09 01:50:18,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:18" (1/1) ... [2018-12-09 01:50:18,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:18" (1/1) ... [2018-12-09 01:50:18,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:18" (1/1) ... [2018-12-09 01:50:18,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:18" (1/1) ... [2018-12-09 01:50:19,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:18" (1/1) ... [2018-12-09 01:50:19,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 01:50:19,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 01:50:19,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 01:50:19,001 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 01:50:19,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/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 [2018-12-09 01:50:19,032 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-12-09 01:50:19,032 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-12-09 01:50:19,033 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 01:50:19,033 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 01:50:19,033 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-09 01:50:19,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-09 01:50:19,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 01:50:19,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 01:50:19,033 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-12-09 01:50:19,033 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-12-09 01:50:19,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-09 01:50:19,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 01:50:19,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 01:50:19,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 01:50:19,033 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 01:50:19,033 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 01:50:19,170 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 01:50:19,170 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-09 01:50:19,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:50:19 BoogieIcfgContainer [2018-12-09 01:50:19,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 01:50:19,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 01:50:19,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 01:50:19,173 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 01:50:19,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:50:18" (1/3) ... [2018-12-09 01:50:19,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a312be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:50:19, skipping insertion in model container [2018-12-09 01:50:19,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:18" (2/3) ... [2018-12-09 01:50:19,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a312be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:50:19, skipping insertion in model container [2018-12-09 01:50:19,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:50:19" (3/3) ... [2018-12-09 01:50:19,175 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a_true-unreach-call.c [2018-12-09 01:50:19,181 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 01:50:19,186 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 01:50:19,196 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 01:50:19,213 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 01:50:19,213 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 01:50:19,213 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 01:50:19,213 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 01:50:19,213 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 01:50:19,213 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 01:50:19,213 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 01:50:19,213 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 01:50:19,213 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 01:50:19,223 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-12-09 01:50:19,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 01:50:19,227 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:50:19,227 INFO L402 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] [2018-12-09 01:50:19,229 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:50:19,233 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:50:19,233 INFO L82 PathProgramCache]: Analyzing trace with hash 1757694217, now seen corresponding path program 1 times [2018-12-09 01:50:19,234 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:50:19,235 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:50:19,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:50:19,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:50:19,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:50:19,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:50:19,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:50:19,312 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:50:19,312 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 01:50:19,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 01:50:19,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 01:50:19,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 01:50:19,323 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-12-09 01:50:19,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:50:19,336 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2018-12-09 01:50:19,336 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 01:50:19,337 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 22 [2018-12-09 01:50:19,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:50:19,342 INFO L225 Difference]: With dead ends: 79 [2018-12-09 01:50:19,342 INFO L226 Difference]: Without dead ends: 40 [2018-12-09 01:50:19,344 INFO L631 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 [2018-12-09 01:50:19,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-09 01:50:19,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-09 01:50:19,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 01:50:19,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-09 01:50:19,369 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2018-12-09 01:50:19,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:50:19,369 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-09 01:50:19,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 01:50:19,369 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-09 01:50:19,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 01:50:19,371 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:50:19,371 INFO L402 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, 1] [2018-12-09 01:50:19,371 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:50:19,372 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:50:19,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1795675250, now seen corresponding path program 1 times [2018-12-09 01:50:19,372 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:50:19,372 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:50:19,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:50:19,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:50:19,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:50:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:50:19,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:50:19,435 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:50:19,435 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 01:50:19,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 01:50:19,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 01:50:19,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 01:50:19,436 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-12-09 01:50:19,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:50:19,460 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2018-12-09 01:50:19,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 01:50:19,461 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-12-09 01:50:19,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:50:19,462 INFO L225 Difference]: With dead ends: 59 [2018-12-09 01:50:19,462 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 01:50:19,463 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 01:50:19,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 01:50:19,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-12-09 01:50:19,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-09 01:50:19,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-09 01:50:19,468 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2018-12-09 01:50:19,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:50:19,469 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-09 01:50:19,469 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 01:50:19,469 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-09 01:50:19,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 01:50:19,469 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:50:19,469 INFO L402 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, 1, 1, 1, 1] [2018-12-09 01:50:19,470 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:50:19,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:50:19,470 INFO L82 PathProgramCache]: Analyzing trace with hash 2106279408, now seen corresponding path program 1 times [2018-12-09 01:50:19,470 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:50:19,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:50:19,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:50:19,471 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:50:19,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:50:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:50:19,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:50:19,510 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:50:19,510 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 01:50:19,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 01:50:19,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 01:50:19,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 01:50:19,510 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 4 states. [2018-12-09 01:50:19,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:50:19,525 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2018-12-09 01:50:19,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 01:50:19,525 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-09 01:50:19,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:50:19,526 INFO L225 Difference]: With dead ends: 63 [2018-12-09 01:50:19,527 INFO L226 Difference]: Without dead ends: 48 [2018-12-09 01:50:19,527 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 01:50:19,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-12-09 01:50:19,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2018-12-09 01:50:19,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-12-09 01:50:19,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2018-12-09 01:50:19,533 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2018-12-09 01:50:19,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:50:19,533 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2018-12-09 01:50:19,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 01:50:19,533 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2018-12-09 01:50:19,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 01:50:19,534 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:50:19,534 INFO L402 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, 1, 1, 1, 1] [2018-12-09 01:50:19,534 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:50:19,534 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:50:19,534 INFO L82 PathProgramCache]: Analyzing trace with hash 309328049, now seen corresponding path program 1 times [2018-12-09 01:50:19,535 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 01:50:19,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 01:50:19,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:50:19,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:50:19,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 01:50:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:50:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 01:50:19,582 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 01:50:19,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:50:19 BoogieIcfgContainer [2018-12-09 01:50:19,602 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 01:50:19,602 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 01:50:19,602 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 01:50:19,602 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 01:50:19,602 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:50:19" (3/4) ... [2018-12-09 01:50:19,605 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 01:50:19,605 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 01:50:19,605 INFO L168 Benchmark]: Toolchain (without parser) took 807.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 66.6 MB). Free memory was 961.4 MB in the beginning and 983.3 MB in the end (delta: -21.9 MB). Peak memory consumption was 44.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:50:19,606 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:50:19,606 INFO L168 Benchmark]: CACSL2BoogieTranslator took 139.95 ms. Allocated memory is still 1.0 GB. Free memory was 961.4 MB in the beginning and 950.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:50:19,607 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 66.6 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -110.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2018-12-09 01:50:19,607 INFO L168 Benchmark]: Boogie Preprocessor took 18.90 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. [2018-12-09 01:50:19,607 INFO L168 Benchmark]: RCFGBuilder took 169.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. [2018-12-09 01:50:19,608 INFO L168 Benchmark]: TraceAbstraction took 430.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 983.3 MB in the end (delta: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 11.5 GB. [2018-12-09 01:50:19,608 INFO L168 Benchmark]: Witness Printer took 2.94 ms. Allocated memory is still 1.1 GB. Free memory is still 983.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:50:19,610 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 139.95 ms. Allocated memory is still 1.0 GB. Free memory was 961.4 MB in the beginning and 950.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.02 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 66.6 MB). Free memory was 950.6 MB in the beginning and 1.1 GB in the end (delta: -110.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.90 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 169.38 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 430.61 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 983.3 MB in the end (delta: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 11.5 GB. * Witness Printer took 2.94 ms. Allocated memory is still 1.1 GB. Free memory is still 983.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 85]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 84, overapproximation of someUnaryDOUBLEoperation at line 79. Possible FailurePath: [L79] double x = -0.0; [L80] double y = 0.0; VAL [y=0] [L81] CALL, EXPR fmax_double(x, y) VAL [\old(x)=4293918726, \old(y)=0] [L52] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4293918726] [L24] __uint32_t msw, lsw; VAL [\old(x)=4293918726, x=4293918726] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (msw) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lsw) = ew_u.parts.lsw [L33-L34] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4293918726, lsw=1, msw=4293918721, x=4293918726] [L36-L37] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4293918726, lsw=1, msw=4293918721, x=4293918726] [L39-L40] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4293918726, lsw=1, msw=4293918721, x=4293918726] [L43-L44] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L47] return 0; VAL [\old(x)=4293918726, \result=0, lsw=1, msw=4293918721, x=4293918726] [L52] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4293918726, \old(y)=0, __fpclassify_double(x)=0, x=4293918726, y=0] [L52] COND TRUE __fpclassify_double(x) == 0 [L53] return y; VAL [\old(x)=4293918726, \old(y)=0, \result=0, x=4293918726, y=0] [L81] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=0, x=4293918726, y=0] [L81] double res = fmax_double(x, y); [L84] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=0, res == 0.0 && __signbit_double(res) == 0=0, x=4293918726, y=0] [L84] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L85] __VERIFIER_error() VAL [res=0, x=4293918726, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 144 SDtfs, 0 SDslu, 172 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 1926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: 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 0.1.23-635dfa2 [2018-12-09 01:50:20,973 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 01:50:20,974 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 01:50:20,980 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 01:50:20,980 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 01:50:20,980 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 01:50:20,981 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 01:50:20,982 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 01:50:20,982 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 01:50:20,983 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 01:50:20,983 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 01:50:20,983 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 01:50:20,984 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 01:50:20,984 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 01:50:20,985 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 01:50:20,985 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 01:50:20,986 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 01:50:20,986 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 01:50:20,988 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 01:50:20,989 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 01:50:20,989 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 01:50:20,990 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 01:50:20,992 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 01:50:20,992 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 01:50:20,992 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 01:50:20,993 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 01:50:20,993 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 01:50:20,993 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 01:50:20,994 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 01:50:20,994 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 01:50:20,994 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 01:50:20,995 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 01:50:20,995 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 01:50:20,995 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 01:50:20,995 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 01:50:20,996 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 01:50:20,996 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-09 01:50:21,006 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 01:50:21,006 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 01:50:21,007 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 01:50:21,007 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 01:50:21,007 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 01:50:21,007 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 01:50:21,008 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 01:50:21,008 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 01:50:21,008 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 01:50:21,008 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 01:50:21,008 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 01:50:21,008 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 01:50:21,009 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 01:50:21,009 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 01:50:21,009 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 01:50:21,009 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 01:50:21,009 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 01:50:21,009 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 01:50:21,009 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 01:50:21,010 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 01:50:21,010 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 01:50:21,010 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 01:50:21,010 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 01:50:21,010 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 01:50:21,010 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 01:50:21,011 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 01:50:21,011 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 01:50:21,011 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 01:50:21,011 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-09 01:50:21,011 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 01:50:21,011 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 01:50:21,011 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 01:50:21,012 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/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(__VERIFIER_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 -> b649b8f673a0a47da0b16e77db6ba5e693ee3ba7 [2018-12-09 01:50:21,036 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 01:50:21,046 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 01:50:21,049 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 01:50:21,050 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 01:50:21,050 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 01:50:21,051 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1252a_true-unreach-call.c [2018-12-09 01:50:21,096 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer/data/b67787d14/e104921b104248a0bfc79e6cedeadbea/FLAGcba3c57f6 [2018-12-09 01:50:21,484 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 01:50:21,484 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/sv-benchmarks/c/float-newlib/double_req_bl_1252a_true-unreach-call.c [2018-12-09 01:50:21,488 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer/data/b67787d14/e104921b104248a0bfc79e6cedeadbea/FLAGcba3c57f6 [2018-12-09 01:50:21,496 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer/data/b67787d14/e104921b104248a0bfc79e6cedeadbea [2018-12-09 01:50:21,498 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 01:50:21,499 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 01:50:21,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 01:50:21,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 01:50:21,501 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 01:50:21,502 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:50:21" (1/1) ... [2018-12-09 01:50:21,503 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36a0bb1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:21, skipping insertion in model container [2018-12-09 01:50:21,503 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 01:50:21" (1/1) ... [2018-12-09 01:50:21,507 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 01:50:21,517 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 01:50:21,612 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:50:21,615 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 01:50:21,632 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 01:50:21,648 INFO L195 MainTranslator]: Completed translation [2018-12-09 01:50:21,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:21 WrapperNode [2018-12-09 01:50:21,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 01:50:21,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 01:50:21,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 01:50:21,649 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 01:50:21,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:21" (1/1) ... [2018-12-09 01:50:21,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:21" (1/1) ... [2018-12-09 01:50:21,665 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 01:50:21,665 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 01:50:21,665 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 01:50:21,665 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 01:50:21,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:21" (1/1) ... [2018-12-09 01:50:21,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:21" (1/1) ... [2018-12-09 01:50:21,673 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:21" (1/1) ... [2018-12-09 01:50:21,673 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:21" (1/1) ... [2018-12-09 01:50:21,711 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:21" (1/1) ... [2018-12-09 01:50:21,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:21" (1/1) ... [2018-12-09 01:50:21,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:21" (1/1) ... [2018-12-09 01:50:21,717 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 01:50:21,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 01:50:21,718 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 01:50:21,718 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 01:50:21,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/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 [2018-12-09 01:50:21,749 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-12-09 01:50:21,749 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2018-12-09 01:50:21,749 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2018-12-09 01:50:21,749 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 01:50:21,749 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 01:50:21,750 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-09 01:50:21,750 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-09 01:50:21,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 01:50:21,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 01:50:21,750 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2018-12-09 01:50:21,750 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2018-12-09 01:50:21,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 01:50:21,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 01:50:21,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 01:50:21,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 01:50:21,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 01:50:21,864 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 01:50:21,929 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 01:50:21,950 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 01:50:21,950 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2018-12-09 01:50:21,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:50:21 BoogieIcfgContainer [2018-12-09 01:50:21,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 01:50:21,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 01:50:21,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 01:50:21,953 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 01:50:21,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 01:50:21" (1/3) ... [2018-12-09 01:50:21,953 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bd4e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:50:21, skipping insertion in model container [2018-12-09 01:50:21,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 01:50:21" (2/3) ... [2018-12-09 01:50:21,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19bd4e64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 01:50:21, skipping insertion in model container [2018-12-09 01:50:21,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:50:21" (3/3) ... [2018-12-09 01:50:21,956 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252a_true-unreach-call.c [2018-12-09 01:50:21,961 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 01:50:21,965 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 01:50:21,974 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 01:50:21,990 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 01:50:21,991 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 01:50:21,991 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 01:50:21,991 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 01:50:21,991 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 01:50:21,991 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 01:50:21,991 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 01:50:21,991 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 01:50:21,991 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 01:50:22,000 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2018-12-09 01:50:22,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-12-09 01:50:22,004 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:50:22,004 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:50:22,005 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:50:22,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:50:22,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1896135752, now seen corresponding path program 1 times [2018-12-09 01:50:22,011 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 01:50:22,011 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/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 [2018-12-09 01:50:22,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:50:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:50:22,056 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:50:22,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:50:22,067 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 01:50:22,074 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:50:22,075 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 01:50:22,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 01:50:22,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 01:50:22,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 01:50:22,085 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2018-12-09 01:50:22,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:50:22,099 INFO L93 Difference]: Finished difference Result 75 states and 103 transitions. [2018-12-09 01:50:22,099 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 01:50:22,100 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-12-09 01:50:22,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:50:22,105 INFO L225 Difference]: With dead ends: 75 [2018-12-09 01:50:22,105 INFO L226 Difference]: Without dead ends: 38 [2018-12-09 01:50:22,107 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 01:50:22,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-12-09 01:50:22,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-12-09 01:50:22,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-12-09 01:50:22,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2018-12-09 01:50:22,131 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 21 [2018-12-09 01:50:22,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:50:22,131 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2018-12-09 01:50:22,131 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 01:50:22,132 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2018-12-09 01:50:22,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-12-09 01:50:22,133 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:50:22,133 INFO L402 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] [2018-12-09 01:50:22,133 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:50:22,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:50:22,133 INFO L82 PathProgramCache]: Analyzing trace with hash -944725945, now seen corresponding path program 1 times [2018-12-09 01:50:22,134 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 01:50:22,134 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/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 [2018-12-09 01:50:22,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:50:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:50:22,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:50:22,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:50:22,207 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 01:50:22,218 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:50:22,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 01:50:22,219 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 01:50:22,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 01:50:22,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 01:50:22,220 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 4 states. [2018-12-09 01:50:22,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:50:22,253 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-12-09 01:50:22,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 01:50:22,254 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2018-12-09 01:50:22,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:50:22,255 INFO L225 Difference]: With dead ends: 56 [2018-12-09 01:50:22,255 INFO L226 Difference]: Without dead ends: 41 [2018-12-09 01:50:22,256 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 01:50:22,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-09 01:50:22,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-09 01:50:22,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 01:50:22,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2018-12-09 01:50:22,261 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 22 [2018-12-09 01:50:22,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:50:22,261 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2018-12-09 01:50:22,261 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 01:50:22,261 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2018-12-09 01:50:22,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-12-09 01:50:22,262 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:50:22,262 INFO L402 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, 1] [2018-12-09 01:50:22,262 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:50:22,262 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:50:22,262 INFO L82 PathProgramCache]: Analyzing trace with hash -190309307, now seen corresponding path program 1 times [2018-12-09 01:50:22,263 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 01:50:22,263 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/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 [2018-12-09 01:50:22,266 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:50:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:50:22,310 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:50:22,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:50:22,474 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 01:50:22,481 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:50:22,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 01:50:22,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 01:50:22,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 01:50:22,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 01:50:22,482 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 8 states. [2018-12-09 01:50:23,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:50:23,242 INFO L93 Difference]: Finished difference Result 63 states and 79 transitions. [2018-12-09 01:50:23,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 01:50:23,243 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2018-12-09 01:50:23,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:50:23,244 INFO L225 Difference]: With dead ends: 63 [2018-12-09 01:50:23,244 INFO L226 Difference]: Without dead ends: 43 [2018-12-09 01:50:23,244 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-09 01:50:23,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-09 01:50:23,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-09 01:50:23,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-09 01:50:23,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-12-09 01:50:23,249 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 23 [2018-12-09 01:50:23,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:50:23,249 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-12-09 01:50:23,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 01:50:23,249 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-12-09 01:50:23,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-09 01:50:23,250 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:50:23,250 INFO L402 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, 1, 1] [2018-12-09 01:50:23,250 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:50:23,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:50:23,250 INFO L82 PathProgramCache]: Analyzing trace with hash 935715971, now seen corresponding path program 1 times [2018-12-09 01:50:23,251 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 01:50:23,251 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/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 [2018-12-09 01:50:23,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:50:23,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:50:23,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:50:23,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:50:23,296 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 01:50:23,303 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:50:23,303 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 01:50:23,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 01:50:23,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 01:50:23,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 01:50:23,304 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 4 states. [2018-12-09 01:50:23,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:50:23,332 INFO L93 Difference]: Finished difference Result 61 states and 72 transitions. [2018-12-09 01:50:23,333 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 01:50:23,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-12-09 01:50:23,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:50:23,334 INFO L225 Difference]: With dead ends: 61 [2018-12-09 01:50:23,334 INFO L226 Difference]: Without dead ends: 46 [2018-12-09 01:50:23,334 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 01:50:23,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-12-09 01:50:23,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2018-12-09 01:50:23,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-09 01:50:23,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 52 transitions. [2018-12-09 01:50:23,340 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 52 transitions. Word has length 24 [2018-12-09 01:50:23,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:50:23,340 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 52 transitions. [2018-12-09 01:50:23,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 01:50:23,340 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 52 transitions. [2018-12-09 01:50:23,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 01:50:23,341 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:50:23,341 INFO L402 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, 1, 1, 1] [2018-12-09 01:50:23,341 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:50:23,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:50:23,342 INFO L82 PathProgramCache]: Analyzing trace with hash 696707201, now seen corresponding path program 1 times [2018-12-09 01:50:23,342 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 01:50:23,342 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/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 [2018-12-09 01:50:23,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:50:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:50:23,386 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:50:23,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 01:50:23,527 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 01:50:23,533 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:50:23,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 01:50:23,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 01:50:23,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 01:50:23,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 01:50:23,535 INFO L87 Difference]: Start difference. First operand 43 states and 52 transitions. Second operand 8 states. [2018-12-09 01:50:25,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:50:25,233 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2018-12-09 01:50:25,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 01:50:25,234 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-12-09 01:50:25,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:50:25,235 INFO L225 Difference]: With dead ends: 62 [2018-12-09 01:50:25,235 INFO L226 Difference]: Without dead ends: 42 [2018-12-09 01:50:25,235 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-09 01:50:25,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-12-09 01:50:25,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2018-12-09 01:50:25,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 01:50:25,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2018-12-09 01:50:25,238 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 25 [2018-12-09 01:50:25,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:50:25,239 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2018-12-09 01:50:25,239 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 01:50:25,239 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2018-12-09 01:50:25,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-09 01:50:25,239 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:50:25,239 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:50:25,240 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:50:25,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:50:25,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1230715632, now seen corresponding path program 1 times [2018-12-09 01:50:25,240 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 01:50:25,240 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/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 [2018-12-09 01:50:25,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:50:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:50:25,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:50:25,307 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 01:50:25,308 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 01:50:25,316 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:50:25,317 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 01:50:25,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 01:50:25,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 01:50:25,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 01:50:25,317 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand 4 states. [2018-12-09 01:50:25,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:50:25,336 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2018-12-09 01:50:25,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 01:50:25,337 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-12-09 01:50:25,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:50:25,338 INFO L225 Difference]: With dead ends: 58 [2018-12-09 01:50:25,338 INFO L226 Difference]: Without dead ends: 43 [2018-12-09 01:50:25,338 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 01:50:25,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-09 01:50:25,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-09 01:50:25,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-09 01:50:25,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2018-12-09 01:50:25,341 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 30 [2018-12-09 01:50:25,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:50:25,341 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2018-12-09 01:50:25,342 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 01:50:25,342 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2018-12-09 01:50:25,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-12-09 01:50:25,342 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:50:25,342 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:50:25,342 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:50:25,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:50:25,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1937025982, now seen corresponding path program 1 times [2018-12-09 01:50:25,343 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 01:50:25,343 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/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 [2018-12-09 01:50:25,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:50:25,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:50:25,401 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:50:25,535 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 01:50:25,536 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 01:50:25,543 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:50:25,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 01:50:25,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 01:50:25,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 01:50:25,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 01:50:25,544 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 8 states. [2018-12-09 01:50:26,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:50:26,428 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2018-12-09 01:50:26,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 01:50:26,428 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2018-12-09 01:50:26,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:50:26,429 INFO L225 Difference]: With dead ends: 63 [2018-12-09 01:50:26,429 INFO L226 Difference]: Without dead ends: 43 [2018-12-09 01:50:26,429 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-09 01:50:26,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2018-12-09 01:50:26,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2018-12-09 01:50:26,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-12-09 01:50:26,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-12-09 01:50:26,432 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 31 [2018-12-09 01:50:26,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:50:26,432 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-12-09 01:50:26,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 01:50:26,432 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-12-09 01:50:26,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-09 01:50:26,433 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:50:26,433 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:50:26,433 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:50:26,433 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:50:26,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1151102924, now seen corresponding path program 1 times [2018-12-09 01:50:26,433 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 01:50:26,433 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/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 [2018-12-09 01:50:26,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:50:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:50:26,487 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:50:26,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-12-09 01:50:26,496 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 01:50:26,503 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:50:26,504 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 01:50:26,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 01:50:26,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 01:50:26,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 01:50:26,504 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 4 states. [2018-12-09 01:50:26,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:50:26,523 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2018-12-09 01:50:26,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 01:50:26,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-12-09 01:50:26,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:50:26,524 INFO L225 Difference]: With dead ends: 59 [2018-12-09 01:50:26,524 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 01:50:26,524 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 01:50:26,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 01:50:26,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2018-12-09 01:50:26,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 01:50:26,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2018-12-09 01:50:26,527 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 32 [2018-12-09 01:50:26,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:50:26,527 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2018-12-09 01:50:26,527 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 01:50:26,527 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2018-12-09 01:50:26,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-09 01:50:26,528 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:50:26,528 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:50:26,528 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:50:26,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:50:26,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1413761077, now seen corresponding path program 1 times [2018-12-09 01:50:26,528 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 01:50:26,528 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2018-12-09 01:50:26,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:50:26,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:50:26,589 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:50:26,709 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 01:50:26,709 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 01:50:26,717 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:50:26,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 01:50:26,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 01:50:26,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 01:50:26,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 01:50:26,718 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2018-12-09 01:50:26,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:50:26,845 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2018-12-09 01:50:26,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 01:50:26,846 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2018-12-09 01:50:26,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:50:26,846 INFO L225 Difference]: With dead ends: 57 [2018-12-09 01:50:26,846 INFO L226 Difference]: Without dead ends: 41 [2018-12-09 01:50:26,847 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-12-09 01:50:26,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-12-09 01:50:26,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-12-09 01:50:26,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-12-09 01:50:26,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2018-12-09 01:50:26,849 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 32 [2018-12-09 01:50:26,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:50:26,849 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2018-12-09 01:50:26,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 01:50:26,849 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2018-12-09 01:50:26,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-12-09 01:50:26,850 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:50:26,850 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:50:26,850 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:50:26,850 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:50:26,850 INFO L82 PathProgramCache]: Analyzing trace with hash 604414451, now seen corresponding path program 1 times [2018-12-09 01:50:26,851 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 01:50:26,851 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2018-12-09 01:50:26,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:50:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:50:26,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:50:26,977 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 01:50:26,977 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 01:50:26,984 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:50:26,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 01:50:26,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 01:50:26,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 01:50:26,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 01:50:26,985 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 8 states. [2018-12-09 01:50:27,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:50:27,271 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2018-12-09 01:50:27,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 01:50:27,272 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-12-09 01:50:27,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:50:27,272 INFO L225 Difference]: With dead ends: 48 [2018-12-09 01:50:27,272 INFO L226 Difference]: Without dead ends: 45 [2018-12-09 01:50:27,273 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-12-09 01:50:27,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-12-09 01:50:27,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2018-12-09 01:50:27,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-09 01:50:27,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2018-12-09 01:50:27,276 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 32 [2018-12-09 01:50:27,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:50:27,276 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2018-12-09 01:50:27,276 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 01:50:27,277 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2018-12-09 01:50:27,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-09 01:50:27,277 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:50:27,277 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:50:27,277 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:50:27,278 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:50:27,278 INFO L82 PathProgramCache]: Analyzing trace with hash 1607764478, now seen corresponding path program 1 times [2018-12-09 01:50:27,278 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 01:50:27,278 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2018-12-09 01:50:27,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:50:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:50:27,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:50:27,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-12-09 01:50:27,415 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 01:50:27,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:50:27,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-12-09 01:50:27,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-12-09 01:50:27,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-12-09 01:50:27,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-12-09 01:50:27,423 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 8 states. [2018-12-09 01:50:27,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:50:27,992 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2018-12-09 01:50:27,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-12-09 01:50:27,993 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2018-12-09 01:50:27,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:50:27,994 INFO L225 Difference]: With dead ends: 62 [2018-12-09 01:50:27,994 INFO L226 Difference]: Without dead ends: 37 [2018-12-09 01:50:27,994 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-12-09 01:50:27,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-12-09 01:50:27,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-12-09 01:50:27,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-09 01:50:27,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2018-12-09 01:50:27,996 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 33 [2018-12-09 01:50:27,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:50:27,996 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2018-12-09 01:50:27,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-12-09 01:50:27,997 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2018-12-09 01:50:27,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-12-09 01:50:27,997 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 01:50:27,997 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 01:50:27,997 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 01:50:27,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 01:50:27,998 INFO L82 PathProgramCache]: Analyzing trace with hash -329247760, now seen corresponding path program 1 times [2018-12-09 01:50:27,998 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 01:50:27,998 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2018-12-09 01:50:28,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 01:50:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 01:50:28,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 01:50:28,267 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-12-09 01:50:28,267 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 01:50:28,274 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 01:50:28,275 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2018-12-09 01:50:28,275 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-12-09 01:50:28,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-12-09 01:50:28,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2018-12-09 01:50:28,275 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 13 states. [2018-12-09 01:50:29,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 01:50:29,051 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2018-12-09 01:50:29,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-12-09 01:50:29,051 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 40 [2018-12-09 01:50:29,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 01:50:29,052 INFO L225 Difference]: With dead ends: 37 [2018-12-09 01:50:29,052 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 01:50:29,052 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2018-12-09 01:50:29,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 01:50:29,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 01:50:29,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 01:50:29,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 01:50:29,053 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2018-12-09 01:50:29,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 01:50:29,053 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 01:50:29,053 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-12-09 01:50:29,053 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 01:50:29,053 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 01:50:29,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 01:50:29,281 WARN L180 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 34 [2018-12-09 01:50:29,285 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 23 48) no Hoare annotation was computed. [2018-12-09 01:50:29,285 INFO L451 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 23 48) the Hoare annotation is: true [2018-12-09 01:50:29,285 INFO L448 ceAbstractionStarter]: For program point L36(lines 36 47) no Hoare annotation was computed. [2018-12-09 01:50:29,285 INFO L448 ceAbstractionStarter]: For program point L26-1(lines 26 31) no Hoare annotation was computed. [2018-12-09 01:50:29,285 INFO L444 ceAbstractionStarter]: At program point L26-2(lines 26 31) the Hoare annotation is: (= |__fpclassify_double_#in~x| __fpclassify_double_~x) [2018-12-09 01:50:29,285 INFO L448 ceAbstractionStarter]: For program point L26-3(lines 23 48) no Hoare annotation was computed. [2018-12-09 01:50:29,285 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 23 48) no Hoare annotation was computed. [2018-12-09 01:50:29,285 INFO L448 ceAbstractionStarter]: For program point L43(lines 43 47) no Hoare annotation was computed. [2018-12-09 01:50:29,285 INFO L448 ceAbstractionStarter]: For program point L39(lines 39 47) no Hoare annotation was computed. [2018-12-09 01:50:29,285 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-09 01:50:29,285 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-09 01:50:29,285 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 01:50:29,285 INFO L448 ceAbstractionStarter]: For program point L57(line 57) no Hoare annotation was computed. [2018-12-09 01:50:29,285 INFO L451 ceAbstractionStarter]: At program point fmax_doubleENTRY(lines 50 58) the Hoare annotation is: true [2018-12-09 01:50:29,285 INFO L448 ceAbstractionStarter]: For program point L57-2(line 57) no Hoare annotation was computed. [2018-12-09 01:50:29,286 INFO L444 ceAbstractionStarter]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (= fmax_double_~x |fmax_double_#in~x|))) (or (and .cse0 (= fmax_double_~y |fmax_double_#in~y|)) (and (or (exists ((v_prenex_11 (_ BitVec 64))) (and (not (bvule ((_ extract 63 32) v_prenex_11) (_ bv2148532223 32))) (= (fp ((_ extract 63 63) v_prenex_11) ((_ extract 62 52) v_prenex_11) ((_ extract 51 0) v_prenex_11)) |fmax_double_#in~x|))) (exists ((v_prenex_10 (_ BitVec 64))) (and (not (bvuge ((_ extract 63 32) v_prenex_10) (_ bv2147483648 32))) (= |fmax_double_#in~x| (fp ((_ extract 63 63) v_prenex_10) ((_ extract 62 52) v_prenex_10) ((_ extract 51 0) v_prenex_10)))))) .cse0))) [2018-12-09 01:50:29,286 INFO L448 ceAbstractionStarter]: For program point L54-1(lines 54 55) no Hoare annotation was computed. [2018-12-09 01:50:29,286 INFO L444 ceAbstractionStarter]: At program point L52(line 52) the Hoare annotation is: (and (= fmax_double_~x |fmax_double_#in~x|) (= fmax_double_~y |fmax_double_#in~y|)) [2018-12-09 01:50:29,286 INFO L448 ceAbstractionStarter]: For program point L52-1(lines 52 53) no Hoare annotation was computed. [2018-12-09 01:50:29,286 INFO L448 ceAbstractionStarter]: For program point fmax_doubleFINAL(lines 50 58) no Hoare annotation was computed. [2018-12-09 01:50:29,286 INFO L448 ceAbstractionStarter]: For program point fmax_doubleEXIT(lines 50 58) no Hoare annotation was computed. [2018-12-09 01:50:29,286 INFO L448 ceAbstractionStarter]: For program point L63-1(lines 63 67) no Hoare annotation was computed. [2018-12-09 01:50:29,286 INFO L444 ceAbstractionStarter]: At program point L63-2(lines 63 67) the Hoare annotation is: (= |__signbit_double_#in~x| __signbit_double_~x) [2018-12-09 01:50:29,286 INFO L448 ceAbstractionStarter]: For program point L63-3(lines 63 67) no Hoare annotation was computed. [2018-12-09 01:50:29,286 INFO L448 ceAbstractionStarter]: For program point __signbit_doubleFINAL(lines 60 70) no Hoare annotation was computed. [2018-12-09 01:50:29,286 INFO L448 ceAbstractionStarter]: For program point __signbit_doubleEXIT(lines 60 70) no Hoare annotation was computed. [2018-12-09 01:50:29,286 INFO L451 ceAbstractionStarter]: At program point __signbit_doubleENTRY(lines 60 70) the Hoare annotation is: true [2018-12-09 01:50:29,286 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 01:50:29,286 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 01:50:29,286 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 01:50:29,286 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 01:50:29,286 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 72 90) the Hoare annotation is: true [2018-12-09 01:50:29,286 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 72 90) no Hoare annotation was computed. [2018-12-09 01:50:29,286 INFO L448 ceAbstractionStarter]: For program point L85(line 85) no Hoare annotation was computed. [2018-12-09 01:50:29,286 INFO L448 ceAbstractionStarter]: For program point L84(line 84) no Hoare annotation was computed. [2018-12-09 01:50:29,287 INFO L444 ceAbstractionStarter]: At program point L84-1(line 84) the Hoare annotation is: (and (= (_ +zero 11 53) main_~res~0) |main_#t~short11| (= (_ +zero 11 53) main_~y~0) (= main_~x~0 (fp.neg (_ +zero 11 53)))) [2018-12-09 01:50:29,287 INFO L448 ceAbstractionStarter]: For program point L84-2(line 84) no Hoare annotation was computed. [2018-12-09 01:50:29,287 INFO L444 ceAbstractionStarter]: At program point L81(line 81) the Hoare annotation is: (and (= (_ +zero 11 53) main_~y~0) (= main_~x~0 (fp.neg (_ +zero 11 53)))) [2018-12-09 01:50:29,287 INFO L448 ceAbstractionStarter]: For program point L81-1(line 81) no Hoare annotation was computed. [2018-12-09 01:50:29,287 INFO L448 ceAbstractionStarter]: For program point L84-4(lines 84 87) no Hoare annotation was computed. [2018-12-09 01:50:29,287 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 72 90) no Hoare annotation was computed. [2018-12-09 01:50:29,287 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 85) no Hoare annotation was computed. [2018-12-09 01:50:29,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 01:50:29 BoogieIcfgContainer [2018-12-09 01:50:29,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 01:50:29,294 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 01:50:29,294 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 01:50:29,294 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 01:50:29,295 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 01:50:21" (3/4) ... [2018-12-09 01:50:29,298 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 01:50:29,302 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-12-09 01:50:29,302 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 01:50:29,302 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmax_double [2018-12-09 01:50:29,302 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __signbit_double [2018-12-09 01:50:29,302 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 01:50:29,305 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2018-12-09 01:50:29,305 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2018-12-09 01:50:29,305 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 01:50:29,321 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-12-09 01:50:29,321 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: \old(x) == x [2018-12-09 01:50:29,335 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_7520febe-e857-4c79-9a53-7ee9d8a7bb01/bin-2019/uautomizer/witness.graphml [2018-12-09 01:50:29,335 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 01:50:29,336 INFO L168 Benchmark]: Toolchain (without parser) took 7837.68 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 199.2 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -118.7 MB). Peak memory consumption was 80.5 MB. Max. memory is 11.5 GB. [2018-12-09 01:50:29,336 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:50:29,336 INFO L168 Benchmark]: CACSL2BoogieTranslator took 149.84 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:50:29,336 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.97 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 01:50:29,337 INFO L168 Benchmark]: Boogie Preprocessor took 52.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -192.8 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. [2018-12-09 01:50:29,337 INFO L168 Benchmark]: RCFGBuilder took 232.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2018-12-09 01:50:29,337 INFO L168 Benchmark]: TraceAbstraction took 7343.03 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 67.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.5 MB). Peak memory consumption was 99.7 MB. Max. memory is 11.5 GB. [2018-12-09 01:50:29,337 INFO L168 Benchmark]: Witness Printer took 41.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. [2018-12-09 01:50:29,338 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 149.84 ms. Allocated memory is still 1.0 GB. Free memory was 943.4 MB in the beginning and 932.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 15.97 ms. Allocated memory is still 1.0 GB. Free memory is still 927.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 52.11 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.1 MB). Free memory was 927.3 MB in the beginning and 1.1 GB in the end (delta: -192.8 MB). Peak memory consumption was 14.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 232.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.2 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7343.03 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 67.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.5 MB). Peak memory consumption was 99.7 MB. Max. memory is 11.5 GB. * Witness Printer took 41.09 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 85]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: \old(x) == x - InvariantResult [Line: 63]: Loop Invariant Derived loop invariant: \old(x) == x - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. SAFE Result, 7.3s OverallTime, 12 OverallIterations, 2 TraceHistogramMax, 5.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 479 SDtfs, 187 SDslu, 1586 SDs, 0 SdLazy, 610 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 361 GetRequests, 284 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 8 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 41 PreInvPairs, 50 NumberOfFragments, 85 HoareAnnotationTreeSize, 41 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 43 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 345 NumberOfCodeBlocks, 345 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 333 ConstructedInterpolants, 40 QuantifiedInterpolants, 42078 SizeOfPredicates, 29 NumberOfNonLiveVariables, 1082 ConjunctsInSsa, 81 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 42/42 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...