./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1230_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_7d416a23-fa62-4fee-a8d7-58f777d88af2/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1230_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/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 b865bb4da04412be07ba7e2426d2224bb04a2953 ................................................................................................................................................................................................................................................................................................................................................................................................... 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_7d416a23-fa62-4fee-a8d7-58f777d88af2/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1230_true-unreach-call.c -s /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/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 b865bb4da04412be07ba7e2426d2224bb04a2953 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 08:15:37,408 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 08:15:37,409 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 08:15:37,415 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 08:15:37,415 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 08:15:37,416 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 08:15:37,417 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 08:15:37,418 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 08:15:37,419 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 08:15:37,419 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 08:15:37,420 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 08:15:37,420 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 08:15:37,421 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 08:15:37,421 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 08:15:37,422 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 08:15:37,422 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 08:15:37,423 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 08:15:37,424 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 08:15:37,425 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 08:15:37,426 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 08:15:37,426 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 08:15:37,427 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 08:15:37,428 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 08:15:37,428 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 08:15:37,428 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 08:15:37,429 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 08:15:37,429 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 08:15:37,430 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 08:15:37,430 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 08:15:37,431 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 08:15:37,431 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 08:15:37,431 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 08:15:37,432 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 08:15:37,432 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 08:15:37,432 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 08:15:37,433 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 08:15:37,433 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-12-09 08:15:37,441 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 08:15:37,441 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 08:15:37,441 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 08:15:37,442 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 08:15:37,442 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 08:15:37,442 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 08:15:37,442 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 08:15:37,442 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 08:15:37,442 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 08:15:37,443 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 08:15:37,443 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 08:15:37,443 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 08:15:37,443 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 08:15:37,443 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 08:15:37,443 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 08:15:37,443 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 08:15:37,444 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 08:15:37,444 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 08:15:37,444 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 08:15:37,444 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 08:15:37,444 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 08:15:37,444 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 08:15:37,444 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 08:15:37,444 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 08:15:37,445 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 08:15:37,445 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 08:15:37,445 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 08:15:37,445 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 08:15:37,445 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 08:15:37,445 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-12-09 08:15:37,445 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_7d416a23-fa62-4fee-a8d7-58f777d88af2/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 -> b865bb4da04412be07ba7e2426d2224bb04a2953 [2018-12-09 08:15:37,462 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 08:15:37,469 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 08:15:37,471 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 08:15:37,472 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 08:15:37,472 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 08:15:37,473 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-12-09 08:15:37,508 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/bin-2019/uautomizer/data/e9e47f3c1/78be228d4560408589e19e66bb4e4aad/FLAG9afb85161 [2018-12-09 08:15:37,793 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 08:15:37,794 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/sv-benchmarks/c/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-12-09 08:15:37,797 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/bin-2019/uautomizer/data/e9e47f3c1/78be228d4560408589e19e66bb4e4aad/FLAG9afb85161 [2018-12-09 08:15:37,805 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/bin-2019/uautomizer/data/e9e47f3c1/78be228d4560408589e19e66bb4e4aad [2018-12-09 08:15:37,807 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 08:15:37,808 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 08:15:37,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 08:15:37,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 08:15:37,811 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 08:15:37,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:15:37" (1/1) ... [2018-12-09 08:15:37,813 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 08:15:37, skipping insertion in model container [2018-12-09 08:15:37,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:15:37" (1/1) ... [2018-12-09 08:15:37,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 08:15:37,827 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 08:15:37,922 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 08:15:37,924 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 08:15:37,938 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 08:15:37,950 INFO L195 MainTranslator]: Completed translation [2018-12-09 08:15:37,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:37 WrapperNode [2018-12-09 08:15:37,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 08:15:37,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 08:15:37,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 08:15:37,951 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 08:15:37,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:37" (1/1) ... [2018-12-09 08:15:37,962 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:37" (1/1) ... [2018-12-09 08:15:37,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 08:15:37,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 08:15:37,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 08:15:37,966 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 08:15:38,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:37" (1/1) ... [2018-12-09 08:15:38,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:37" (1/1) ... [2018-12-09 08:15:38,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:37" (1/1) ... [2018-12-09 08:15:38,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:37" (1/1) ... [2018-12-09 08:15:38,007 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:37" (1/1) ... [2018-12-09 08:15:38,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:37" (1/1) ... [2018-12-09 08:15:38,010 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:37" (1/1) ... [2018-12-09 08:15:38,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 08:15:38,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 08:15:38,012 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 08:15:38,012 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 08:15:38,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/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 08:15:38,044 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-12-09 08:15:38,044 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-12-09 08:15:38,044 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 08:15:38,044 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 08:15:38,044 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-09 08:15:38,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-09 08:15:38,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 08:15:38,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 08:15:38,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2018-12-09 08:15:38,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 08:15:38,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 08:15:38,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 08:15:38,045 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-12-09 08:15:38,045 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-12-09 08:15:38,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-12-09 08:15:38,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 08:15:38,172 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 08:15:38,173 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-09 08:15:38,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:15:38 BoogieIcfgContainer [2018-12-09 08:15:38,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 08:15:38,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 08:15:38,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 08:15:38,176 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 08:15:38,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:15:37" (1/3) ... [2018-12-09 08:15:38,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225903e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:15:38, skipping insertion in model container [2018-12-09 08:15:38,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:37" (2/3) ... [2018-12-09 08:15:38,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@225903e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:15:38, skipping insertion in model container [2018-12-09 08:15:38,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:15:38" (3/3) ... [2018-12-09 08:15:38,178 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230_true-unreach-call.c [2018-12-09 08:15:38,184 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 08:15:38,188 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 08:15:38,198 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 08:15:38,216 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 08:15:38,217 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 08:15:38,217 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 08:15:38,217 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 08:15:38,217 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 08:15:38,217 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 08:15:38,217 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 08:15:38,217 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 08:15:38,217 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 08:15:38,227 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2018-12-09 08:15:38,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 08:15:38,231 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:15:38,232 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 08:15:38,233 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:15:38,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:15:38,236 INFO L82 PathProgramCache]: Analyzing trace with hash -248042727, now seen corresponding path program 1 times [2018-12-09 08:15:38,237 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 08:15:38,238 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 08:15:38,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:15:38,267 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:15:38,267 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:15:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:15:38,314 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 08:15:38,316 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 08:15:38,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 08:15:38,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 08:15:38,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 08:15:38,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 08:15:38,327 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2018-12-09 08:15:38,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:15:38,340 INFO L93 Difference]: Finished difference Result 71 states and 92 transitions. [2018-12-09 08:15:38,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 08:15:38,341 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 26 [2018-12-09 08:15:38,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:15:38,346 INFO L225 Difference]: With dead ends: 71 [2018-12-09 08:15:38,346 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 08:15:38,348 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 08:15:38,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 08:15:38,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-09 08:15:38,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 08:15:38,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-09 08:15:38,371 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 26 [2018-12-09 08:15:38,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:15:38,372 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-09 08:15:38,372 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 08:15:38,372 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-09 08:15:38,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-09 08:15:38,373 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:15:38,373 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, 1] [2018-12-09 08:15:38,373 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:15:38,373 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:15:38,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1557048336, now seen corresponding path program 1 times [2018-12-09 08:15:38,374 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 08:15:38,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 08:15:38,374 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:15:38,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:15:38,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:15:38,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:15:38,426 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 08:15:38,426 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 08:15:38,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 08:15:38,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 08:15:38,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 08:15:38,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 08:15:38,428 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-12-09 08:15:38,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:15:38,451 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2018-12-09 08:15:38,451 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 08:15:38,451 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-09 08:15:38,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:15:38,453 INFO L225 Difference]: With dead ends: 51 [2018-12-09 08:15:38,453 INFO L226 Difference]: Without dead ends: 40 [2018-12-09 08:15:38,453 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 08:15:38,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-12-09 08:15:38,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2018-12-09 08:15:38,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 08:15:38,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-09 08:15:38,458 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 27 [2018-12-09 08:15:38,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:15:38,458 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-09 08:15:38,458 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 08:15:38,458 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-09 08:15:38,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-09 08:15:38,459 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:15:38,459 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, 1, 1, 1, 1] [2018-12-09 08:15:38,459 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:15:38,459 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:15:38,459 INFO L82 PathProgramCache]: Analyzing trace with hash 589129728, now seen corresponding path program 1 times [2018-12-09 08:15:38,460 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 08:15:38,460 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 08:15:38,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:15:38,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:15:38,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:15:38,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:15:38,497 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 08:15:38,497 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 08:15:38,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 08:15:38,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 08:15:38,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 08:15:38,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 08:15:38,498 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 4 states. [2018-12-09 08:15:38,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:15:38,512 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2018-12-09 08:15:38,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 08:15:38,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-12-09 08:15:38,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:15:38,513 INFO L225 Difference]: With dead ends: 55 [2018-12-09 08:15:38,514 INFO L226 Difference]: Without dead ends: 44 [2018-12-09 08:15:38,514 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 08:15:38,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-12-09 08:15:38,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2018-12-09 08:15:38,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 08:15:38,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2018-12-09 08:15:38,517 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 30 [2018-12-09 08:15:38,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:15:38,518 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2018-12-09 08:15:38,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 08:15:38,518 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2018-12-09 08:15:38,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-12-09 08:15:38,518 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:15:38,518 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, 1, 1, 1, 1] [2018-12-09 08:15:38,518 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:15:38,519 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:15:38,519 INFO L82 PathProgramCache]: Analyzing trace with hash 2096681537, now seen corresponding path program 1 times [2018-12-09 08:15:38,519 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 08:15:38,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 08:15:38,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:15:38,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:15:38,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 08:15:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 08:15:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 08:15:38,563 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-12-09 08:15:38,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:15:38 BoogieIcfgContainer [2018-12-09 08:15:38,581 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 08:15:38,581 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 08:15:38,581 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 08:15:38,581 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 08:15:38,581 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:15:38" (3/4) ... [2018-12-09 08:15:38,584 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 08:15:38,584 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 08:15:38,584 INFO L168 Benchmark]: Toolchain (without parser) took 776.70 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 957.1 MB in the beginning and 1.1 GB in the end (delta: -103.1 MB). Peak memory consumption was 36.8 MB. Max. memory is 11.5 GB. [2018-12-09 08:15:38,585 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 08:15:38,585 INFO L168 Benchmark]: CACSL2BoogieTranslator took 142.40 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 945.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-12-09 08:15:38,586 INFO L168 Benchmark]: Boogie Procedure Inliner took 14.61 ms. Allocated memory is still 1.0 GB. Free memory was 945.3 MB in the beginning and 939.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 08:15:38,586 INFO L168 Benchmark]: Boogie Preprocessor took 45.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -180.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-12-09 08:15:38,586 INFO L168 Benchmark]: RCFGBuilder took 161.16 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: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2018-12-09 08:15:38,587 INFO L168 Benchmark]: TraceAbstraction took 407.33 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: 41.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 11.5 GB. [2018-12-09 08:15:38,587 INFO L168 Benchmark]: Witness Printer took 2.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 08:15:38,589 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 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 142.40 ms. Allocated memory is still 1.0 GB. Free memory was 957.1 MB in the beginning and 945.3 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 14.61 ms. Allocated memory is still 1.0 GB. Free memory was 945.3 MB in the beginning and 939.9 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 45.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -180.9 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 161.16 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: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 407.33 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: 41.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 11.5 GB. * Witness Printer took 2.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 66]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 16, overapproximation of someBinaryArithmeticDOUBLEoperation at line 61. Possible FailurePath: [L61] double x = 0.0 / 0.0; [L62] double y = 0.0 / 0.0; [L63] CALL, EXPR fmin_double(x, y) VAL [\old(x)=4294967303, \old(y)=4294967304] [L45] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=4294967303] [L18] __uint32_t msw, lsw; VAL [\old(x)=4294967303, x=4294967303] [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L27-L28] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=4294967303, lsw=4294967297, msw=4293918721, x=4294967303] [L30-L31] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=4294967303, lsw=4294967297, msw=4293918721, x=4294967303] [L33-L34] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=4294967303, lsw=4294967297, msw=4293918721, x=4294967303] [L37-L38] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L41] return 0; VAL [\old(x)=4294967303, \result=0, lsw=4294967297, msw=4293918721, x=4294967303] [L45] RET, EXPR __fpclassify_double(x) VAL [\old(x)=4294967303, \old(y)=4294967304, __fpclassify_double(x)=0, x=4294967303, y=4294967304] [L45] COND TRUE __fpclassify_double(x) == 0 [L46] return y; VAL [\old(x)=4294967303, \old(y)=4294967304, \result=4294967304, x=4294967303, y=4294967304] [L63] RET, EXPR fmin_double(x, y) VAL [fmin_double(x, y)=4294967304, x=4294967303, y=4294967304] [L63] double res = fmin_double(x, y); [L65] CALL, EXPR isnan_double(res) VAL [\old(x)=4294967304] [L16] return x != x; VAL [\old(x)=4294967304, \result=0, x=4294967304] [L65] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, res=4294967304, x=4294967303, y=4294967304] [L65] COND TRUE !isnan_double(res) [L66] __VERIFIER_error() VAL [res=4294967304, x=4294967303, y=4294967304] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. UNSAFE Result, 0.3s OverallTime, 4 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 129 SDtfs, 0 SDslu, 152 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=40occurred 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, 113 NumberOfCodeBlocks, 113 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2582 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 08:15:39,968 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 08:15:39,969 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 08:15:39,975 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 08:15:39,976 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 08:15:39,976 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 08:15:39,977 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 08:15:39,978 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 08:15:39,980 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 08:15:39,980 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 08:15:39,981 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 08:15:39,981 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 08:15:39,981 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 08:15:39,982 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 08:15:39,982 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 08:15:39,983 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 08:15:39,983 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 08:15:39,984 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 08:15:39,985 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 08:15:39,986 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 08:15:39,986 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 08:15:39,987 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 08:15:39,989 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 08:15:39,989 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 08:15:39,989 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 08:15:39,990 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 08:15:39,990 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 08:15:39,991 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 08:15:39,991 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 08:15:39,992 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 08:15:39,992 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 08:15:39,992 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 08:15:39,992 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 08:15:39,992 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 08:15:39,993 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 08:15:39,993 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 08:15:39,993 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-12-09 08:15:40,002 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 08:15:40,003 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 08:15:40,003 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-12-09 08:15:40,003 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-12-09 08:15:40,004 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 08:15:40,004 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 08:15:40,004 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 08:15:40,004 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 08:15:40,004 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 08:15:40,005 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 08:15:40,005 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 08:15:40,005 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-12-09 08:15:40,005 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-12-09 08:15:40,005 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-12-09 08:15:40,005 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-12-09 08:15:40,005 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-12-09 08:15:40,006 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 08:15:40,006 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 08:15:40,006 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 08:15:40,006 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-12-09 08:15:40,006 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 08:15:40,006 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 08:15:40,007 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-12-09 08:15:40,007 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-12-09 08:15:40,007 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-12-09 08:15:40,007 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 08:15:40,007 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-12-09 08:15:40,007 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-12-09 08:15:40,008 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-12-09 08:15:40,008 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-12-09 08:15:40,008 INFO L133 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2018-12-09 08:15:40,008 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-12-09 08:15:40,008 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_7d416a23-fa62-4fee-a8d7-58f777d88af2/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 -> b865bb4da04412be07ba7e2426d2224bb04a2953 [2018-12-09 08:15:40,031 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 08:15:40,039 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 08:15:40,041 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 08:15:40,042 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 08:15:40,042 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 08:15:40,042 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/bin-2019/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-12-09 08:15:40,076 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/bin-2019/uautomizer/data/cd702f488/151d6a578e294515863f17a65cc830c1/FLAG948a9b706 [2018-12-09 08:15:40,471 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 08:15:40,472 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/sv-benchmarks/c/float-newlib/double_req_bl_1230_true-unreach-call.c [2018-12-09 08:15:40,475 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/bin-2019/uautomizer/data/cd702f488/151d6a578e294515863f17a65cc830c1/FLAG948a9b706 [2018-12-09 08:15:40,484 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/bin-2019/uautomizer/data/cd702f488/151d6a578e294515863f17a65cc830c1 [2018-12-09 08:15:40,486 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 08:15:40,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 08:15:40,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 08:15:40,487 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 08:15:40,489 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 08:15:40,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:15:40" (1/1) ... [2018-12-09 08:15:40,491 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 08:15:40, skipping insertion in model container [2018-12-09 08:15:40,491 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:15:40" (1/1) ... [2018-12-09 08:15:40,496 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 08:15:40,506 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 08:15:40,599 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 08:15:40,602 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 08:15:40,617 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 08:15:40,634 INFO L195 MainTranslator]: Completed translation [2018-12-09 08:15:40,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:40 WrapperNode [2018-12-09 08:15:40,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 08:15:40,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 08:15:40,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 08:15:40,635 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 08:15:40,640 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:40" (1/1) ... [2018-12-09 08:15:40,646 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:40" (1/1) ... [2018-12-09 08:15:40,651 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 08:15:40,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 08:15:40,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 08:15:40,651 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 08:15:40,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:40" (1/1) ... [2018-12-09 08:15:40,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:40" (1/1) ... [2018-12-09 08:15:40,658 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:40" (1/1) ... [2018-12-09 08:15:40,658 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:40" (1/1) ... [2018-12-09 08:15:40,664 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:40" (1/1) ... [2018-12-09 08:15:40,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:40" (1/1) ... [2018-12-09 08:15:40,669 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:40" (1/1) ... [2018-12-09 08:15:40,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 08:15:40,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 08:15:40,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 08:15:40,671 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 08:15:40,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/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 08:15:40,731 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2018-12-09 08:15:40,731 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2018-12-09 08:15:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2018-12-09 08:15:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-12-09 08:15:40,732 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-12-09 08:15:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2018-12-09 08:15:40,732 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2018-12-09 08:15:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-12-09 08:15:40,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-12-09 08:15:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-12-09 08:15:40,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-12-09 08:15:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 08:15:40,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 08:15:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure fmin_double [2018-12-09 08:15:40,733 INFO L138 BoogieDeclarations]: Found implementation of procedure fmin_double [2018-12-09 08:15:40,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-12-09 08:15:40,833 WARN L317 ript$VariableManager]: TermVariabe |q#valueAsBitvector| not constructed by VariableManager. Cannot ensure absence of name clashes. [2018-12-09 08:15:40,889 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 08:15:40,889 INFO L280 CfgBuilder]: Removed 2 assue(true) statements. [2018-12-09 08:15:40,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:15:40 BoogieIcfgContainer [2018-12-09 08:15:40,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 08:15:40,890 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-12-09 08:15:40,890 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-12-09 08:15:40,892 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-12-09 08:15:40,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:15:40" (1/3) ... [2018-12-09 08:15:40,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602b8076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:15:40, skipping insertion in model container [2018-12-09 08:15:40,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:15:40" (2/3) ... [2018-12-09 08:15:40,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@602b8076 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:15:40, skipping insertion in model container [2018-12-09 08:15:40,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:15:40" (3/3) ... [2018-12-09 08:15:40,894 INFO L112 eAbstractionObserver]: Analyzing ICFG double_req_bl_1230_true-unreach-call.c [2018-12-09 08:15:40,900 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-12-09 08:15:40,904 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-12-09 08:15:40,912 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-12-09 08:15:40,928 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 08:15:40,928 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-12-09 08:15:40,929 INFO L383 AbstractCegarLoop]: Hoare is true [2018-12-09 08:15:40,929 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-12-09 08:15:40,929 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 08:15:40,929 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 08:15:40,929 INFO L387 AbstractCegarLoop]: Difference is false [2018-12-09 08:15:40,929 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 08:15:40,929 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-12-09 08:15:40,938 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2018-12-09 08:15:40,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-12-09 08:15:40,942 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:15:40,943 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 08:15:40,944 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:15:40,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:15:40,948 INFO L82 PathProgramCache]: Analyzing trace with hash 294947040, now seen corresponding path program 1 times [2018-12-09 08:15:40,951 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 08:15:40,951 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/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 08:15:40,955 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:15:40,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:15:41,001 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 08:15:41,012 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 08:15:41,012 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 08:15:41,020 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 08:15:41,020 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 08:15:41,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-12-09 08:15:41,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-12-09 08:15:41,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-12-09 08:15:41,031 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2018-12-09 08:15:41,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:15:41,044 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2018-12-09 08:15:41,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 08:15:41,045 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2018-12-09 08:15:41,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:15:41,051 INFO L225 Difference]: With dead ends: 65 [2018-12-09 08:15:41,051 INFO L226 Difference]: Without dead ends: 33 [2018-12-09 08:15:41,053 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 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 08:15:41,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-09 08:15:41,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-09 08:15:41,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 08:15:41,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2018-12-09 08:15:41,080 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 24 [2018-12-09 08:15:41,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:15:41,081 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2018-12-09 08:15:41,081 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-12-09 08:15:41,081 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2018-12-09 08:15:41,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-12-09 08:15:41,082 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:15:41,082 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 08:15:41,083 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:15:41,083 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:15:41,083 INFO L82 PathProgramCache]: Analyzing trace with hash 321884391, now seen corresponding path program 1 times [2018-12-09 08:15:41,083 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 08:15:41,083 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/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 08:15:41,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:15:41,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:15:41,132 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 08:15:41,160 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 08:15:41,160 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 08:15:41,167 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 08:15:41,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 08:15:41,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 08:15:41,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 08:15:41,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 08:15:41,169 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 4 states. [2018-12-09 08:15:41,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:15:41,195 INFO L93 Difference]: Finished difference Result 46 states and 54 transitions. [2018-12-09 08:15:41,195 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 08:15:41,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-12-09 08:15:41,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:15:41,197 INFO L225 Difference]: With dead ends: 46 [2018-12-09 08:15:41,197 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 08:15:41,198 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 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 08:15:41,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 08:15:41,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-09 08:15:41,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 08:15:41,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-09 08:15:41,204 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 25 [2018-12-09 08:15:41,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:15:41,205 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-09 08:15:41,205 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 08:15:41,205 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-09 08:15:41,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-12-09 08:15:41,205 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:15:41,206 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 08:15:41,206 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:15:41,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:15:41,206 INFO L82 PathProgramCache]: Analyzing trace with hash -2098210685, now seen corresponding path program 1 times [2018-12-09 08:15:41,206 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 08:15:41,207 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/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 08:15:41,209 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:15:41,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:15:41,252 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 08:15:41,264 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 08:15:41,264 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 08:15:41,271 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 08:15:41,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 08:15:41,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 08:15:41,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 08:15:41,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 08:15:41,273 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-09 08:15:41,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:15:41,296 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-09 08:15:41,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 08:15:41,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2018-12-09 08:15:41,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:15:41,298 INFO L225 Difference]: With dead ends: 49 [2018-12-09 08:15:41,298 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 08:15:41,298 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 23 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 08:15:41,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 08:15:41,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-09 08:15:41,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 08:15:41,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-09 08:15:41,304 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 26 [2018-12-09 08:15:41,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:15:41,304 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-09 08:15:41,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 08:15:41,305 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-09 08:15:41,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-12-09 08:15:41,305 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:15:41,306 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, 1] [2018-12-09 08:15:41,306 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:15:41,306 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:15:41,306 INFO L82 PathProgramCache]: Analyzing trace with hash -985358741, now seen corresponding path program 1 times [2018-12-09 08:15:41,307 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 08:15:41,307 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/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 08:15:41,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:15:41,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:15:41,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 08:15:41,362 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 08:15:41,363 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 08:15:41,369 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 08:15:41,370 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 08:15:41,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 08:15:41,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 08:15:41,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 08:15:41,370 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-09 08:15:41,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:15:41,391 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-09 08:15:41,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 08:15:41,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-12-09 08:15:41,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:15:41,392 INFO L225 Difference]: With dead ends: 49 [2018-12-09 08:15:41,392 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 08:15:41,393 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 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 08:15:41,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 08:15:41,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-09 08:15:41,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 08:15:41,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-09 08:15:41,396 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 27 [2018-12-09 08:15:41,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:15:41,396 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-09 08:15:41,396 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 08:15:41,396 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-09 08:15:41,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-09 08:15:41,397 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:15:41,397 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, 1, 1] [2018-12-09 08:15:41,397 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:15:41,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:15:41,397 INFO L82 PathProgramCache]: Analyzing trace with hash -2020298873, now seen corresponding path program 1 times [2018-12-09 08:15:41,397 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 08:15:41,398 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/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 08:15:41,400 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:15:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:15:41,447 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 08:15:41,457 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 08:15:41,457 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 08:15:41,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 08:15:41,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 08:15:41,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 08:15:41,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 08:15:41,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 08:15:41,465 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 4 states. [2018-12-09 08:15:41,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:15:41,479 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2018-12-09 08:15:41,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 08:15:41,479 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2018-12-09 08:15:41,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:15:41,480 INFO L225 Difference]: With dead ends: 49 [2018-12-09 08:15:41,480 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 08:15:41,480 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 25 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 08:15:41,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 08:15:41,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-09 08:15:41,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 08:15:41,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2018-12-09 08:15:41,483 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 28 [2018-12-09 08:15:41,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:15:41,484 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2018-12-09 08:15:41,484 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 08:15:41,484 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2018-12-09 08:15:41,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-12-09 08:15:41,484 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:15:41,484 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, 1, 1] [2018-12-09 08:15:41,484 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:15:41,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:15:41,485 INFO L82 PathProgramCache]: Analyzing trace with hash 1981265416, now seen corresponding path program 1 times [2018-12-09 08:15:41,485 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 08:15:41,485 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/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 08:15:41,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:15:41,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:15:41,529 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 08:15:41,639 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 08:15:41,639 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 08:15:41,646 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 08:15:41,646 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-09 08:15:41,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 08:15:41,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 08:15:41,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-09 08:15:41,647 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2018-12-09 08:15:41,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:15:41,860 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2018-12-09 08:15:41,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 08:15:41,861 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2018-12-09 08:15:41,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:15:41,861 INFO L225 Difference]: With dead ends: 43 [2018-12-09 08:15:41,862 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 08:15:41,862 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-12-09 08:15:41,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 08:15:41,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2018-12-09 08:15:41,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 08:15:41,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2018-12-09 08:15:41,866 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 28 [2018-12-09 08:15:41,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:15:41,866 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2018-12-09 08:15:41,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 08:15:41,866 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2018-12-09 08:15:41,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-12-09 08:15:41,867 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:15:41,867 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] [2018-12-09 08:15:41,867 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:15:41,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:15:41,868 INFO L82 PathProgramCache]: Analyzing trace with hash 225868180, now seen corresponding path program 1 times [2018-12-09 08:15:41,868 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 08:15:41,868 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/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 08:15:41,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:15:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:15:41,932 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 08:15:41,943 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 08:15:41,943 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 08:15:41,951 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 08:15:41,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 08:15:41,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 08:15:41,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 08:15:41,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 08:15:41,952 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand 4 states. [2018-12-09 08:15:41,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:15:41,974 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-12-09 08:15:41,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 08:15:41,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-12-09 08:15:41,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:15:41,976 INFO L225 Difference]: With dead ends: 46 [2018-12-09 08:15:41,976 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 08:15:41,976 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 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 08:15:41,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 08:15:41,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-09 08:15:41,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 08:15:41,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-09 08:15:41,980 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 33 [2018-12-09 08:15:41,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:15:41,981 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-09 08:15:41,981 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 08:15:41,981 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-09 08:15:41,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-12-09 08:15:41,982 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:15:41,982 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, 1] [2018-12-09 08:15:41,982 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:15:41,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:15:41,982 INFO L82 PathProgramCache]: Analyzing trace with hash -924592112, now seen corresponding path program 1 times [2018-12-09 08:15:41,983 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 08:15:41,983 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/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 08:15:41,985 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:15:42,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:15:42,050 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 08:15:42,060 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 08:15:42,060 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 08:15:42,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 08:15:42,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 08:15:42,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 08:15:42,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 08:15:42,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 08:15:42,072 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 4 states. [2018-12-09 08:15:42,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:15:42,093 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2018-12-09 08:15:42,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 08:15:42,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2018-12-09 08:15:42,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:15:42,094 INFO L225 Difference]: With dead ends: 49 [2018-12-09 08:15:42,095 INFO L226 Difference]: Without dead ends: 39 [2018-12-09 08:15:42,095 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 31 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 08:15:42,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-12-09 08:15:42,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-12-09 08:15:42,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 08:15:42,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2018-12-09 08:15:42,099 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2018-12-09 08:15:42,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:15:42,100 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2018-12-09 08:15:42,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 08:15:42,100 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2018-12-09 08:15:42,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-09 08:15:42,101 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:15:42,101 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] [2018-12-09 08:15:42,101 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:15:42,101 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:15:42,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1139309745, now seen corresponding path program 1 times [2018-12-09 08:15:42,101 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 08:15:42,102 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/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 08:15:42,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:15:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:15:42,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 08:15:42,245 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 08:15:42,246 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 08:15:42,253 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 08:15:42,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-12-09 08:15:42,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-12-09 08:15:42,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 08:15:42,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-12-09 08:15:42,253 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 5 states. [2018-12-09 08:15:42,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:15:42,563 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2018-12-09 08:15:42,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-12-09 08:15:42,564 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-12-09 08:15:42,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:15:42,565 INFO L225 Difference]: With dead ends: 47 [2018-12-09 08:15:42,565 INFO L226 Difference]: Without dead ends: 36 [2018-12-09 08:15:42,565 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 31 SyntacticMatches, 0 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 08:15:42,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-12-09 08:15:42,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2018-12-09 08:15:42,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-12-09 08:15:42,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2018-12-09 08:15:42,569 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 35 [2018-12-09 08:15:42,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:15:42,569 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2018-12-09 08:15:42,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-12-09 08:15:42,569 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2018-12-09 08:15:42,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-09 08:15:42,570 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:15:42,570 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] [2018-12-09 08:15:42,570 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:15:42,571 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:15:42,571 INFO L82 PathProgramCache]: Analyzing trace with hash -438245167, now seen corresponding path program 1 times [2018-12-09 08:15:42,571 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 08:15:42,571 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/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 08:15:42,575 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:15:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:15:42,630 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 08:15:42,767 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 08:15:42,767 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 08:15:42,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 08:15:42,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-12-09 08:15:42,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-12-09 08:15:42,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-12-09 08:15:42,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-12-09 08:15:42,775 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 10 states. [2018-12-09 08:15:43,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:15:43,076 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2018-12-09 08:15:43,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-12-09 08:15:43,076 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2018-12-09 08:15:43,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:15:43,077 INFO L225 Difference]: With dead ends: 43 [2018-12-09 08:15:43,077 INFO L226 Difference]: Without dead ends: 33 [2018-12-09 08:15:43,077 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-12-09 08:15:43,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-12-09 08:15:43,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2018-12-09 08:15:43,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 08:15:43,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-09 08:15:43,080 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-12-09 08:15:43,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:15:43,080 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-09 08:15:43,080 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-12-09 08:15:43,080 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-09 08:15:43,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-12-09 08:15:43,080 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:15:43,080 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, 1, 1] [2018-12-09 08:15:43,081 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:15:43,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:15:43,081 INFO L82 PathProgramCache]: Analyzing trace with hash 892232472, now seen corresponding path program 1 times [2018-12-09 08:15:43,081 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 08:15:43,081 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/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 08:15:43,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:15:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:15:43,137 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 08:15:43,145 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 08:15:43,146 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 08:15:43,153 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 08:15:43,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 08:15:43,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 08:15:43,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 08:15:43,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 08:15:43,154 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-12-09 08:15:43,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:15:43,169 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-12-09 08:15:43,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 08:15:43,170 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2018-12-09 08:15:43,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:15:43,171 INFO L225 Difference]: With dead ends: 46 [2018-12-09 08:15:43,171 INFO L226 Difference]: Without dead ends: 35 [2018-12-09 08:15:43,171 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 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 08:15:43,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-09 08:15:43,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-12-09 08:15:43,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 08:15:43,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-09 08:15:43,174 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 35 [2018-12-09 08:15:43,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:15:43,174 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-09 08:15:43,174 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 08:15:43,174 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-09 08:15:43,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-09 08:15:43,174 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:15:43,175 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, 1, 1, 1] [2018-12-09 08:15:43,175 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:15:43,175 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:15:43,175 INFO L82 PathProgramCache]: Analyzing trace with hash 205607700, now seen corresponding path program 1 times [2018-12-09 08:15:43,175 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 08:15:43,175 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/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 08:15:43,178 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:15:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:15:43,230 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 08:15:43,238 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 08:15:43,239 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 08:15:43,246 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 08:15:43,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 08:15:43,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-12-09 08:15:43,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 08:15:43,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 08:15:43,247 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2018-12-09 08:15:43,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:15:43,273 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2018-12-09 08:15:43,273 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 08:15:43,273 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2018-12-09 08:15:43,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:15:43,274 INFO L225 Difference]: With dead ends: 46 [2018-12-09 08:15:43,274 INFO L226 Difference]: Without dead ends: 35 [2018-12-09 08:15:43,274 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 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 08:15:43,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-12-09 08:15:43,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2018-12-09 08:15:43,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2018-12-09 08:15:43,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2018-12-09 08:15:43,277 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 36 [2018-12-09 08:15:43,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:15:43,278 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2018-12-09 08:15:43,278 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-12-09 08:15:43,278 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2018-12-09 08:15:43,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-12-09 08:15:43,279 INFO L394 BasicCegarLoop]: Found error trace [2018-12-09 08:15:43,279 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, 1, 1, 1] [2018-12-09 08:15:43,279 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-12-09 08:15:43,279 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 08:15:43,279 INFO L82 PathProgramCache]: Analyzing trace with hash -87795307, now seen corresponding path program 1 times [2018-12-09 08:15:43,279 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-12-09 08:15:43,280 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/bin-2019/uautomizer/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2018-12-09 08:15:43,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 08:15:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 08:15:43,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 08:15:43,430 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 08:15:43,430 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-12-09 08:15:43,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 08:15:43,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-12-09 08:15:43,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-12-09 08:15:43,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-12-09 08:15:43,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2018-12-09 08:15:43,439 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 9 states. [2018-12-09 08:15:43,752 WARN L180 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-12-09 08:15:43,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 08:15:43,830 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-12-09 08:15:43,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-12-09 08:15:43,830 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2018-12-09 08:15:43,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-12-09 08:15:43,831 INFO L225 Difference]: With dead ends: 33 [2018-12-09 08:15:43,831 INFO L226 Difference]: Without dead ends: 0 [2018-12-09 08:15:43,831 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-12-09 08:15:43,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-12-09 08:15:43,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-12-09 08:15:43,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-12-09 08:15:43,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 08:15:43,831 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2018-12-09 08:15:43,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-12-09 08:15:43,832 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 08:15:43,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-12-09 08:15:43,832 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-12-09 08:15:43,832 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-12-09 08:15:43,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-12-09 08:15:43,973 INFO L451 ceAbstractionStarter]: At program point isnan_doubleENTRY(line 16) the Hoare annotation is: true [2018-12-09 08:15:43,973 INFO L448 ceAbstractionStarter]: For program point isnan_doubleEXIT(line 16) no Hoare annotation was computed. [2018-12-09 08:15:43,973 INFO L448 ceAbstractionStarter]: For program point isnan_doubleFINAL(line 16) no Hoare annotation was computed. [2018-12-09 08:15:43,973 INFO L448 ceAbstractionStarter]: For program point L33(lines 33 41) no Hoare annotation was computed. [2018-12-09 08:15:43,973 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleFINAL(lines 17 42) no Hoare annotation was computed. [2018-12-09 08:15:43,974 INFO L451 ceAbstractionStarter]: At program point __fpclassify_doubleENTRY(lines 17 42) the Hoare annotation is: true [2018-12-09 08:15:43,974 INFO L448 ceAbstractionStarter]: For program point L30(lines 30 41) no Hoare annotation was computed. [2018-12-09 08:15:43,974 INFO L448 ceAbstractionStarter]: For program point __fpclassify_doubleEXIT(lines 17 42) no Hoare annotation was computed. [2018-12-09 08:15:43,974 INFO L448 ceAbstractionStarter]: For program point L20-1(lines 20 25) no Hoare annotation was computed. [2018-12-09 08:15:43,974 INFO L451 ceAbstractionStarter]: At program point L20-2(lines 20 25) the Hoare annotation is: true [2018-12-09 08:15:43,974 INFO L448 ceAbstractionStarter]: For program point L20-3(lines 17 42) no Hoare annotation was computed. [2018-12-09 08:15:43,974 INFO L448 ceAbstractionStarter]: For program point L37(lines 37 41) no Hoare annotation was computed. [2018-12-09 08:15:43,974 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2018-12-09 08:15:43,974 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2018-12-09 08:15:43,974 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-12-09 08:15:43,974 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-12-09 08:15:43,974 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-12-09 08:15:43,974 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-12-09 08:15:43,974 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-12-09 08:15:43,974 INFO L444 ceAbstractionStarter]: At program point L65(line 65) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (and (= main_~y~0 .cse0) (= main_~res~0 .cse0))) [2018-12-09 08:15:43,974 INFO L448 ceAbstractionStarter]: For program point L65-1(lines 65 68) no Hoare annotation was computed. [2018-12-09 08:15:43,974 INFO L444 ceAbstractionStarter]: At program point L63(line 63) the Hoare annotation is: (let ((.cse0 (fp.div roundNearestTiesToEven (_ +zero 11 53) (_ +zero 11 53)))) (and (= main_~x~0 .cse0) (= main_~y~0 .cse0))) [2018-12-09 08:15:43,974 INFO L448 ceAbstractionStarter]: For program point L63-1(line 63) no Hoare annotation was computed. [2018-12-09 08:15:43,974 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 53 71) the Hoare annotation is: true [2018-12-09 08:15:43,974 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 53 71) no Hoare annotation was computed. [2018-12-09 08:15:43,975 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 53 71) no Hoare annotation was computed. [2018-12-09 08:15:43,975 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 66) no Hoare annotation was computed. [2018-12-09 08:15:43,975 INFO L448 ceAbstractionStarter]: For program point L66(line 66) no Hoare annotation was computed. [2018-12-09 08:15:43,975 INFO L448 ceAbstractionStarter]: For program point fmin_doubleFINAL(lines 44 51) no Hoare annotation was computed. [2018-12-09 08:15:43,975 INFO L451 ceAbstractionStarter]: At program point fmin_doubleENTRY(lines 44 51) the Hoare annotation is: true [2018-12-09 08:15:43,975 INFO L448 ceAbstractionStarter]: For program point fmin_doubleEXIT(lines 44 51) no Hoare annotation was computed. [2018-12-09 08:15:43,975 INFO L448 ceAbstractionStarter]: For program point L50(line 50) no Hoare annotation was computed. [2018-12-09 08:15:43,975 INFO L448 ceAbstractionStarter]: For program point L50-2(line 50) no Hoare annotation was computed. [2018-12-09 08:15:43,975 INFO L444 ceAbstractionStarter]: At program point L47(line 47) the Hoare annotation is: (and (= fmin_double_~y |fmin_double_#in~y|) (= fmin_double_~x |fmin_double_#in~x|)) [2018-12-09 08:15:43,975 INFO L448 ceAbstractionStarter]: For program point L47-1(lines 47 48) no Hoare annotation was computed. [2018-12-09 08:15:43,975 INFO L444 ceAbstractionStarter]: At program point L45(line 45) the Hoare annotation is: (and (= fmin_double_~y |fmin_double_#in~y|) (= fmin_double_~x |fmin_double_#in~x|)) [2018-12-09 08:15:43,975 INFO L448 ceAbstractionStarter]: For program point L45-1(lines 45 46) no Hoare annotation was computed. [2018-12-09 08:15:43,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:15:43 BoogieIcfgContainer [2018-12-09 08:15:43,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-12-09 08:15:43,979 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 08:15:43,979 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 08:15:43,979 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 08:15:43,979 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:15:40" (3/4) ... [2018-12-09 08:15:43,981 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-12-09 08:15:43,985 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure isnan_double [2018-12-09 08:15:43,985 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure __fpclassify_double [2018-12-09 08:15:43,985 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-12-09 08:15:43,985 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-12-09 08:15:43,985 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure fmin_double [2018-12-09 08:15:43,988 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2018-12-09 08:15:43,988 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2018-12-09 08:15:43,988 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-12-09 08:15:44,013 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_7d416a23-fa62-4fee-a8d7-58f777d88af2/bin-2019/uautomizer/witness.graphml [2018-12-09 08:15:44,013 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 08:15:44,014 INFO L168 Benchmark]: Toolchain (without parser) took 3527.93 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 205.0 MB). Free memory was 944.7 MB in the beginning and 1.2 GB in the end (delta: -228.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 08:15:44,014 INFO L168 Benchmark]: CDTParser took 0.13 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 08:15:44,014 INFO L168 Benchmark]: CACSL2BoogieTranslator took 147.57 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 934.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-12-09 08:15:44,015 INFO L168 Benchmark]: Boogie Procedure Inliner took 15.84 ms. Allocated memory is still 1.0 GB. Free memory was 934.0 MB in the beginning and 928.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-12-09 08:15:44,015 INFO L168 Benchmark]: Boogie Preprocessor took 19.51 ms. Allocated memory is still 1.0 GB. Free memory is still 928.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 08:15:44,015 INFO L168 Benchmark]: RCFGBuilder took 219.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -184.6 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. [2018-12-09 08:15:44,015 INFO L168 Benchmark]: TraceAbstraction took 3088.29 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 62.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -67.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 08:15:44,015 INFO L168 Benchmark]: Witness Printer took 34.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-12-09 08:15:44,017 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 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 147.57 ms. Allocated memory is still 1.0 GB. Free memory was 944.7 MB in the beginning and 934.0 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 15.84 ms. Allocated memory is still 1.0 GB. Free memory was 934.0 MB in the beginning and 928.6 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.51 ms. Allocated memory is still 1.0 GB. Free memory is still 928.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 219.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 928.6 MB in the beginning and 1.1 GB in the end (delta: -184.6 MB). Peak memory consumption was 14.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3088.29 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 62.4 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -67.1 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 34.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 66]: 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: 20]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. SAFE Result, 3.0s OverallTime, 13 OverallIterations, 2 TraceHistogramMax, 1.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 497 SDtfs, 31 SDslu, 1314 SDs, 0 SdLazy, 218 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 403 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 13 MinimizatonAttempts, 19 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 28 PreInvPairs, 33 NumberOfFragments, 48 HoareAnnotationTreeSize, 28 FomulaSimplifications, 20 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 402 NumberOfCodeBlocks, 402 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 389 ConstructedInterpolants, 3 QuantifiedInterpolants, 21339 SizeOfPredicates, 15 NumberOfNonLiveVariables, 1205 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 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...