./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 32adbfac5f3e3ea232180afd045da0027ca6d993 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 32adbfac5f3e3ea232180afd045da0027ca6d993 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:41:15,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:41:15,753 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:41:15,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:41:15,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:41:15,808 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:41:15,811 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:41:15,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:41:15,818 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:41:15,824 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:41:15,825 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:41:15,827 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:41:15,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:41:15,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:41:15,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:41:15,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:41:15,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:41:15,840 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:41:15,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:41:15,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:41:15,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:41:15,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:41:15,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:41:15,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:41:15,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:41:15,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:41:15,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:41:15,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:41:15,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:41:15,870 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:41:15,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:41:15,872 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:41:15,874 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:41:15,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:41:15,877 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:41:15,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:41:15,878 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:41:15,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:41:15,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:41:15,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:41:15,880 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:41:15,882 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:41:15,930 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:41:15,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:41:15,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:41:15,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:41:15,933 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:41:15,934 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:41:15,934 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:41:15,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:41:15,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:41:15,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:41:15,936 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:41:15,936 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:41:15,936 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:41:15,936 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:41:15,937 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:41:15,937 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:41:15,937 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:41:15,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:41:15,938 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:41:15,938 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:41:15,938 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:41:15,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:41:15,939 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:41:15,939 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:41:15,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:41:15,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:41:15,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:41:15,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:41:15,940 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:41:15,940 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32adbfac5f3e3ea232180afd045da0027ca6d993 [2020-11-30 00:41:16,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:41:16,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:41:16,288 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:41:16,290 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:41:16,291 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:41:16,292 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2020-11-30 00:41:16,383 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/data/171d045d8/73417455825d4aafa62ae8f1759e8e89/FLAG8a36dc779 [2020-11-30 00:41:16,842 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:41:16,843 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2020-11-30 00:41:16,849 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/data/171d045d8/73417455825d4aafa62ae8f1759e8e89/FLAG8a36dc779 [2020-11-30 00:41:17,240 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/data/171d045d8/73417455825d4aafa62ae8f1759e8e89 [2020-11-30 00:41:17,243 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:41:17,244 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:41:17,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:41:17,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:41:17,251 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:41:17,253 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:41:17" (1/1) ... [2020-11-30 00:41:17,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2079fd21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:17, skipping insertion in model container [2020-11-30 00:41:17,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:41:17" (1/1) ... [2020-11-30 00:41:17,264 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:41:17,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:41:17,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:41:17,486 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:41:17,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:41:17,526 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:41:17,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:17 WrapperNode [2020-11-30 00:41:17,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:41:17,528 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:41:17,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:41:17,529 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:41:17,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:17" (1/1) ... [2020-11-30 00:41:17,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:17" (1/1) ... [2020-11-30 00:41:17,585 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:41:17,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:41:17,586 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:41:17,586 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:41:17,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:17" (1/1) ... [2020-11-30 00:41:17,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:17" (1/1) ... [2020-11-30 00:41:17,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:17" (1/1) ... [2020-11-30 00:41:17,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:17" (1/1) ... [2020-11-30 00:41:17,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:17" (1/1) ... [2020-11-30 00:41:17,636 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:17" (1/1) ... [2020-11-30 00:41:17,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:17" (1/1) ... [2020-11-30 00:41:17,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:41:17,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:41:17,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:41:17,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:41:17,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:41:17,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:41:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:41:17,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 00:41:17,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:41:17,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:41:17,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:41:17,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:41:18,283 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:41:18,283 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-11-30 00:41:18,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:41:18 BoogieIcfgContainer [2020-11-30 00:41:18,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:41:18,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:41:18,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:41:18,303 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:41:18,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:41:17" (1/3) ... [2020-11-30 00:41:18,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8aa89b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:41:18, skipping insertion in model container [2020-11-30 00:41:18,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:17" (2/3) ... [2020-11-30 00:41:18,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8aa89b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:41:18, skipping insertion in model container [2020-11-30 00:41:18,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:41:18" (3/3) ... [2020-11-30 00:41:18,307 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251.c [2020-11-30 00:41:18,317 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:41:18,323 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 00:41:18,344 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 00:41:18,373 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:41:18,374 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:41:18,374 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:41:18,374 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:41:18,374 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:41:18,374 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:41:18,375 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:41:18,375 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:41:18,388 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-11-30 00:41:18,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:41:18,394 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:18,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:18,396 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:41:18,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:18,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1204154757, now seen corresponding path program 1 times [2020-11-30 00:41:18,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:41:18,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411094895] [2020-11-30 00:41:18,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:41:18,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:18,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:18,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411094895] [2020-11-30 00:41:18,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:18,624 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:41:18,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333689151] [2020-11-30 00:41:18,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:41:18,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:41:18,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:41:18,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:41:18,643 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 4 states. [2020-11-30 00:41:18,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:18,737 INFO L93 Difference]: Finished difference Result 92 states and 136 transitions. [2020-11-30 00:41:18,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:41:18,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-30 00:41:18,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:18,770 INFO L225 Difference]: With dead ends: 92 [2020-11-30 00:41:18,770 INFO L226 Difference]: Without dead ends: 50 [2020-11-30 00:41:18,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:41:18,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-30 00:41:18,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-11-30 00:41:18,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-30 00:41:18,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2020-11-30 00:41:18,824 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 16 [2020-11-30 00:41:18,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:18,825 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2020-11-30 00:41:18,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:41:18,825 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2020-11-30 00:41:18,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:41:18,826 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:18,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:18,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:41:18,827 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:41:18,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:18,829 INFO L82 PathProgramCache]: Analyzing trace with hash 44236684, now seen corresponding path program 1 times [2020-11-30 00:41:18,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:41:18,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520481023] [2020-11-30 00:41:18,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:41:18,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:18,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:18,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520481023] [2020-11-30 00:41:18,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:18,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:41:18,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895756078] [2020-11-30 00:41:18,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:41:18,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:41:18,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:41:18,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:41:18,940 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand 4 states. [2020-11-30 00:41:19,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:19,019 INFO L93 Difference]: Finished difference Result 77 states and 97 transitions. [2020-11-30 00:41:19,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:41:19,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-30 00:41:19,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:19,022 INFO L225 Difference]: With dead ends: 77 [2020-11-30 00:41:19,022 INFO L226 Difference]: Without dead ends: 64 [2020-11-30 00:41:19,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:41:19,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-30 00:41:19,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 47. [2020-11-30 00:41:19,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-30 00:41:19,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-11-30 00:41:19,032 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2020-11-30 00:41:19,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:19,032 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-11-30 00:41:19,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:41:19,032 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-11-30 00:41:19,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 00:41:19,033 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:19,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:19,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:41:19,034 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:41:19,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:19,035 INFO L82 PathProgramCache]: Analyzing trace with hash -674173253, now seen corresponding path program 1 times [2020-11-30 00:41:19,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:41:19,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402558820] [2020-11-30 00:41:19,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:41:19,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:19,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:19,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402558820] [2020-11-30 00:41:19,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:19,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:41:19,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937764575] [2020-11-30 00:41:19,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:41:19,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:41:19,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:41:19,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:41:19,185 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 4 states. [2020-11-30 00:41:19,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:19,297 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2020-11-30 00:41:19,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:41:19,302 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-11-30 00:41:19,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:19,304 INFO L225 Difference]: With dead ends: 79 [2020-11-30 00:41:19,304 INFO L226 Difference]: Without dead ends: 66 [2020-11-30 00:41:19,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:41:19,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-30 00:41:19,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2020-11-30 00:41:19,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-30 00:41:19,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-11-30 00:41:19,323 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-11-30 00:41:19,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:19,326 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-11-30 00:41:19,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:41:19,326 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-11-30 00:41:19,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 00:41:19,329 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:19,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:19,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:41:19,330 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:41:19,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:19,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1345927737, now seen corresponding path program 1 times [2020-11-30 00:41:19,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:41:19,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753933912] [2020-11-30 00:41:19,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:41:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:19,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:19,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753933912] [2020-11-30 00:41:19,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:19,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:41:19,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242943556] [2020-11-30 00:41:19,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:41:19,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:41:19,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:41:19,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:41:19,419 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 4 states. [2020-11-30 00:41:19,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:19,519 INFO L93 Difference]: Finished difference Result 81 states and 101 transitions. [2020-11-30 00:41:19,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:41:19,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-11-30 00:41:19,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:19,523 INFO L225 Difference]: With dead ends: 81 [2020-11-30 00:41:19,523 INFO L226 Difference]: Without dead ends: 68 [2020-11-30 00:41:19,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:41:19,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-30 00:41:19,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 47. [2020-11-30 00:41:19,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-30 00:41:19,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-11-30 00:41:19,545 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 20 [2020-11-30 00:41:19,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:19,545 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-11-30 00:41:19,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:41:19,546 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-11-30 00:41:19,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 00:41:19,548 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:19,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:19,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 00:41:19,549 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:41:19,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:19,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1380709804, now seen corresponding path program 1 times [2020-11-30 00:41:19,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:41:19,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999674916] [2020-11-30 00:41:19,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:41:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:19,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:19,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999674916] [2020-11-30 00:41:19,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:19,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 00:41:19,664 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99406249] [2020-11-30 00:41:19,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:41:19,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:41:19,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:41:19,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:41:19,665 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 3 states. [2020-11-30 00:41:19,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:19,688 INFO L93 Difference]: Finished difference Result 50 states and 65 transitions. [2020-11-30 00:41:19,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:41:19,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-11-30 00:41:19,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:19,689 INFO L225 Difference]: With dead ends: 50 [2020-11-30 00:41:19,689 INFO L226 Difference]: Without dead ends: 48 [2020-11-30 00:41:19,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:41:19,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-30 00:41:19,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-11-30 00:41:19,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-30 00:41:19,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 63 transitions. [2020-11-30 00:41:19,696 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 63 transitions. Word has length 21 [2020-11-30 00:41:19,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:19,697 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 63 transitions. [2020-11-30 00:41:19,698 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:41:19,698 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 63 transitions. [2020-11-30 00:41:19,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 00:41:19,699 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:19,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:19,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 00:41:19,700 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:41:19,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:19,701 INFO L82 PathProgramCache]: Analyzing trace with hash 147544209, now seen corresponding path program 1 times [2020-11-30 00:41:19,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:41:19,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652905848] [2020-11-30 00:41:19,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:41:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:41:19,747 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:41:19,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 00:41:19,798 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 00:41:19,846 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 00:41:19,848 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 00:41:19,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 00:41:19,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:41:19 BoogieIcfgContainer [2020-11-30 00:41:19,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:41:19,926 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:41:19,927 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:41:19,927 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:41:19,928 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:41:18" (3/4) ... [2020-11-30 00:41:19,931 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 00:41:19,932 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:41:19,937 INFO L168 Benchmark]: Toolchain (without parser) took 2689.50 ms. Allocated memory was 83.9 MB in the beginning and 107.0 MB in the end (delta: 23.1 MB). Free memory was 51.7 MB in the beginning and 45.4 MB in the end (delta: 6.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:41:19,939 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 83.9 MB. Free memory was 43.1 MB in the beginning and 43.1 MB in the end (delta: 34.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:41:19,941 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.67 ms. Allocated memory is still 83.9 MB. Free memory was 51.5 MB in the beginning and 59.8 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:41:19,947 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.92 ms. Allocated memory is still 83.9 MB. Free memory was 59.8 MB in the beginning and 57.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:41:19,949 INFO L168 Benchmark]: Boogie Preprocessor took 69.27 ms. Allocated memory is still 83.9 MB. Free memory was 57.7 MB in the beginning and 56.0 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:41:19,950 INFO L168 Benchmark]: RCFGBuilder took 629.56 ms. Allocated memory is still 83.9 MB. Free memory was 56.0 MB in the beginning and 32.5 MB in the end (delta: 23.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:41:19,952 INFO L168 Benchmark]: TraceAbstraction took 1621.78 ms. Allocated memory is still 107.0 MB. Free memory was 84.7 MB in the beginning and 46.2 MB in the end (delta: 38.5 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:41:19,956 INFO L168 Benchmark]: Witness Printer took 5.42 ms. Allocated memory is still 107.0 MB. Free memory is still 45.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:41:19,961 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 83.9 MB. Free memory was 43.1 MB in the beginning and 43.1 MB in the end (delta: 34.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.67 ms. Allocated memory is still 83.9 MB. Free memory was 51.5 MB in the beginning and 59.8 MB in the end (delta: -8.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 56.92 ms. Allocated memory is still 83.9 MB. Free memory was 59.8 MB in the beginning and 57.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 69.27 ms. Allocated memory is still 83.9 MB. Free memory was 57.7 MB in the beginning and 56.0 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 629.56 ms. Allocated memory is still 83.9 MB. Free memory was 56.0 MB in the beginning and 32.5 MB in the end (delta: 23.5 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1621.78 ms. Allocated memory is still 107.0 MB. Free memory was 84.7 MB in the beginning and 46.2 MB in the end (delta: 38.5 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.42 ms. Allocated memory is still 107.0 MB. Free memory is still 45.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 75. Possible FailurePath: [L66] float x = __VERIFIER_nondet_float(); [L67] float y = __VERIFIER_nondet_float(); [L57] return x != x; [L69] EXPR isnan_float(x) && !isnan_float(y) [L57] return x != x; [L69] EXPR isnan_float(x) && !isnan_float(y) [L69-L70] (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L69-L70] COND TRUE (isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y)) [L23] __uint32_t w; [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (x) [L28] EXPR gf_u.word [L28] (w) = gf_u.word [L31] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L33-L34] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L36-L37] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L39] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L42] return 0; [L46] COND TRUE __fpclassify_float(x) == 0 [L47] return y; [L72] float res = fmax_float(x, y); [L57] return x != x; [L75] EXPR isnan_float(x) && !isnan_float(y) [L57] return x != x; [L75] EXPR isnan_float(x) && !isnan_float(y) [L75] COND TRUE isnan_float(x) && !isnan_float(y) && res != y [L3] __assert_fail("0", "float_req_bl_1251.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 49 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 343 SDtfs, 79 SDslu, 503 SDs, 0 SdLazy, 88 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 62 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 89 ConstructedInterpolants, 0 QuantifiedInterpolants, 1865 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:41:23,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:41:23,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:41:23,094 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:41:23,095 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:41:23,100 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:41:23,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:41:23,108 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:41:23,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:41:23,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:41:23,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:41:23,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:41:23,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:41:23,133 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:41:23,135 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:41:23,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:41:23,139 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:41:23,143 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:41:23,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:41:23,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:41:23,163 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:41:23,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:41:23,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:41:23,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:41:23,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:41:23,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:41:23,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:41:23,182 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:41:23,183 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:41:23,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:41:23,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:41:23,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:41:23,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:41:23,190 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:41:23,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:41:23,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:41:23,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:41:23,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:41:23,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:41:23,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:41:23,197 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:41:23,199 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-30 00:41:23,229 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:41:23,234 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:41:23,237 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:41:23,238 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:41:23,239 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:41:23,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:41:23,239 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:41:23,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:41:23,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:41:23,240 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:41:23,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:41:23,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:41:23,242 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 00:41:23,242 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 00:41:23,242 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:41:23,242 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:41:23,243 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:41:23,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:41:23,243 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:41:23,243 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:41:23,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:41:23,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:41:23,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:41:23,244 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:41:23,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:41:23,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:41:23,245 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-30 00:41:23,245 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 00:41:23,245 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:41:23,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:41:23,246 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 00:41:23,246 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32adbfac5f3e3ea232180afd045da0027ca6d993 [2020-11-30 00:41:23,715 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:41:23,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:41:23,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:41:23,776 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:41:23,777 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:41:23,778 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/../../sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2020-11-30 00:41:23,867 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/data/1e1c85b09/c9565fc3914a4a3b836be81a61104368/FLAG27c3b6a9b [2020-11-30 00:41:24,625 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:41:24,630 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/sv-benchmarks/c/float-newlib/float_req_bl_1251.c [2020-11-30 00:41:24,639 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/data/1e1c85b09/c9565fc3914a4a3b836be81a61104368/FLAG27c3b6a9b [2020-11-30 00:41:24,969 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/data/1e1c85b09/c9565fc3914a4a3b836be81a61104368 [2020-11-30 00:41:24,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:41:24,974 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:41:24,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:41:24,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:41:24,981 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:41:24,982 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:41:24" (1/1) ... [2020-11-30 00:41:24,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be891c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:24, skipping insertion in model container [2020-11-30 00:41:24,985 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:41:24" (1/1) ... [2020-11-30 00:41:24,994 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:41:25,017 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:41:25,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:41:25,237 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:41:25,314 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:41:25,349 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:41:25,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:25 WrapperNode [2020-11-30 00:41:25,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:41:25,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:41:25,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:41:25,356 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:41:25,364 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:25" (1/1) ... [2020-11-30 00:41:25,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:25" (1/1) ... [2020-11-30 00:41:25,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:41:25,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:41:25,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:41:25,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:41:25,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:25" (1/1) ... [2020-11-30 00:41:25,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:25" (1/1) ... [2020-11-30 00:41:25,471 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:25" (1/1) ... [2020-11-30 00:41:25,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:25" (1/1) ... [2020-11-30 00:41:25,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:25" (1/1) ... [2020-11-30 00:41:25,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:25" (1/1) ... [2020-11-30 00:41:25,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:25" (1/1) ... [2020-11-30 00:41:25,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:41:25,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:41:25,521 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:41:25,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:41:25,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:25" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:41:25,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 00:41:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:41:25,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 00:41:25,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:41:25,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:41:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-30 00:41:25,599 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:41:26,350 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:41:26,351 INFO L298 CfgBuilder]: Removed 34 assume(true) statements. [2020-11-30 00:41:26,353 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:41:26 BoogieIcfgContainer [2020-11-30 00:41:26,353 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:41:26,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:41:26,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:41:26,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:41:26,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:41:24" (1/3) ... [2020-11-30 00:41:26,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@142ba473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:41:26, skipping insertion in model container [2020-11-30 00:41:26,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:41:25" (2/3) ... [2020-11-30 00:41:26,361 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@142ba473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:41:26, skipping insertion in model container [2020-11-30 00:41:26,361 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:41:26" (3/3) ... [2020-11-30 00:41:26,363 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1251.c [2020-11-30 00:41:26,377 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:41:26,383 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 00:41:26,397 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 00:41:26,447 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:41:26,448 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:41:26,448 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:41:26,448 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:41:26,448 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:41:26,449 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:41:26,449 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:41:26,449 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:41:26,466 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-11-30 00:41:26,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 00:41:26,478 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:26,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:26,479 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:41:26,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:26,486 INFO L82 PathProgramCache]: Analyzing trace with hash 1204154757, now seen corresponding path program 1 times [2020-11-30 00:41:26,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:41:26,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525452300] [2020-11-30 00:41:26,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 00:41:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:26,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 00:41:26,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:26,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:26,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:41:26,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:26,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525452300] [2020-11-30 00:41:26,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:26,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 00:41:26,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779455124] [2020-11-30 00:41:26,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 00:41:26,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:41:26,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 00:41:26,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:41:26,724 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 2 states. [2020-11-30 00:41:26,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:26,760 INFO L93 Difference]: Finished difference Result 84 states and 124 transitions. [2020-11-30 00:41:26,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 00:41:26,762 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-11-30 00:41:26,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:26,792 INFO L225 Difference]: With dead ends: 84 [2020-11-30 00:41:26,793 INFO L226 Difference]: Without dead ends: 43 [2020-11-30 00:41:26,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 00:41:26,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-30 00:41:26,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-11-30 00:41:26,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-30 00:41:26,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 58 transitions. [2020-11-30 00:41:26,847 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 58 transitions. Word has length 16 [2020-11-30 00:41:26,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:26,848 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 58 transitions. [2020-11-30 00:41:26,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 00:41:26,848 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 58 transitions. [2020-11-30 00:41:26,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:41:26,849 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:26,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:27,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 00:41:27,053 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:41:27,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:27,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1262247077, now seen corresponding path program 1 times [2020-11-30 00:41:27,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:41:27,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395269219] [2020-11-30 00:41:27,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 00:41:27,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:27,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 00:41:27,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:27,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:27,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:41:27,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:27,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395269219] [2020-11-30 00:41:27,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:27,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-30 00:41:27,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004054867] [2020-11-30 00:41:27,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:41:27,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:41:27,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:41:27,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:41:27,244 INFO L87 Difference]: Start difference. First operand 43 states and 58 transitions. Second operand 4 states. [2020-11-30 00:41:27,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:27,369 INFO L93 Difference]: Finished difference Result 82 states and 111 transitions. [2020-11-30 00:41:27,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:41:27,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-30 00:41:27,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:27,372 INFO L225 Difference]: With dead ends: 82 [2020-11-30 00:41:27,372 INFO L226 Difference]: Without dead ends: 50 [2020-11-30 00:41:27,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:41:27,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-30 00:41:27,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-11-30 00:41:27,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-30 00:41:27,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 60 transitions. [2020-11-30 00:41:27,393 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 60 transitions. Word has length 17 [2020-11-30 00:41:27,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:27,394 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 60 transitions. [2020-11-30 00:41:27,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:41:27,394 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 60 transitions. [2020-11-30 00:41:27,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:41:27,397 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:27,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:27,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 00:41:27,618 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:41:27,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:27,619 INFO L82 PathProgramCache]: Analyzing trace with hash 44236684, now seen corresponding path program 1 times [2020-11-30 00:41:27,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:41:27,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783818804] [2020-11-30 00:41:27,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 00:41:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:27,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 00:41:27,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:27,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:27,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:41:27,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:27,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783818804] [2020-11-30 00:41:27,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:27,828 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 00:41:27,828 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398345598] [2020-11-30 00:41:27,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:41:27,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:41:27,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:41:27,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:41:27,831 INFO L87 Difference]: Start difference. First operand 45 states and 60 transitions. Second operand 6 states. [2020-11-30 00:41:28,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:28,013 INFO L93 Difference]: Finished difference Result 96 states and 120 transitions. [2020-11-30 00:41:28,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:41:28,014 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-30 00:41:28,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:28,016 INFO L225 Difference]: With dead ends: 96 [2020-11-30 00:41:28,016 INFO L226 Difference]: Without dead ends: 83 [2020-11-30 00:41:28,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:41:28,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-30 00:41:28,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 47. [2020-11-30 00:41:28,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-30 00:41:28,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-11-30 00:41:28,028 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 18 [2020-11-30 00:41:28,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:28,029 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-11-30 00:41:28,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:41:28,029 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-11-30 00:41:28,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 00:41:28,031 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:28,031 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:28,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 00:41:28,249 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:41:28,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:28,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1380709804, now seen corresponding path program 1 times [2020-11-30 00:41:28,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:41:28,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689746802] [2020-11-30 00:41:28,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 00:41:28,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:28,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 00:41:28,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:28,430 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:28,501 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:28,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:28,553 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:41:28,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:28,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689746802] [2020-11-30 00:41:28,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:28,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2020-11-30 00:41:28,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36168636] [2020-11-30 00:41:28,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 00:41:28,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:41:28,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 00:41:28,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:41:28,673 INFO L87 Difference]: Start difference. First operand 47 states and 62 transitions. Second operand 10 states. [2020-11-30 00:41:29,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:29,382 INFO L93 Difference]: Finished difference Result 149 states and 197 transitions. [2020-11-30 00:41:29,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 00:41:29,383 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2020-11-30 00:41:29,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:29,385 INFO L225 Difference]: With dead ends: 149 [2020-11-30 00:41:29,385 INFO L226 Difference]: Without dead ends: 140 [2020-11-30 00:41:29,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-11-30 00:41:29,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-11-30 00:41:29,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 75. [2020-11-30 00:41:29,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-30 00:41:29,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 102 transitions. [2020-11-30 00:41:29,399 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 102 transitions. Word has length 21 [2020-11-30 00:41:29,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:29,399 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 102 transitions. [2020-11-30 00:41:29,400 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 00:41:29,400 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 102 transitions. [2020-11-30 00:41:29,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 00:41:29,401 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:29,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:29,615 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 00:41:29,618 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:41:29,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:29,618 INFO L82 PathProgramCache]: Analyzing trace with hash 147544209, now seen corresponding path program 1 times [2020-11-30 00:41:29,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:41:29,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1251372072] [2020-11-30 00:41:29,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-30 00:41:29,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:29,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 00:41:29,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:29,787 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:29,788 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:29,824 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:30,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:30,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:41:30,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:30,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1251372072] [2020-11-30 00:41:30,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:30,203 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 15 [2020-11-30 00:41:30,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736703543] [2020-11-30 00:41:30,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-30 00:41:30,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:41:30,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-30 00:41:30,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-11-30 00:41:30,206 INFO L87 Difference]: Start difference. First operand 75 states and 102 transitions. Second operand 15 states. [2020-11-30 00:41:31,519 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2020-11-30 00:41:31,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:31,700 INFO L93 Difference]: Finished difference Result 180 states and 237 transitions. [2020-11-30 00:41:31,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-30 00:41:31,701 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 22 [2020-11-30 00:41:31,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:31,703 INFO L225 Difference]: With dead ends: 180 [2020-11-30 00:41:31,703 INFO L226 Difference]: Without dead ends: 178 [2020-11-30 00:41:31,704 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2020-11-30 00:41:31,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-11-30 00:41:31,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 89. [2020-11-30 00:41:31,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-30 00:41:31,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 121 transitions. [2020-11-30 00:41:31,719 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 121 transitions. Word has length 22 [2020-11-30 00:41:31,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:31,720 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 121 transitions. [2020-11-30 00:41:31,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-30 00:41:31,720 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 121 transitions. [2020-11-30 00:41:31,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 00:41:31,721 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:31,721 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:31,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 00:41:31,935 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:41:31,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:31,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1845695531, now seen corresponding path program 1 times [2020-11-30 00:41:31,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:41:31,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [695319852] [2020-11-30 00:41:31,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-30 00:41:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:32,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 00:41:32,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:32,056 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:32,089 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:32,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:32,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:41:32,125 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-30 00:41:32,126 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 00:41:32,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:32,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [695319852] [2020-11-30 00:41:32,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:32,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-11-30 00:41:32,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672402879] [2020-11-30 00:41:32,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 00:41:32,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:41:32,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 00:41:32,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:41:32,178 INFO L87 Difference]: Start difference. First operand 89 states and 121 transitions. Second operand 9 states. [2020-11-30 00:41:32,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:32,730 INFO L93 Difference]: Finished difference Result 166 states and 219 transitions. [2020-11-30 00:41:32,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 00:41:32,731 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-11-30 00:41:32,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:32,732 INFO L225 Difference]: With dead ends: 166 [2020-11-30 00:41:32,732 INFO L226 Difference]: Without dead ends: 131 [2020-11-30 00:41:32,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-11-30 00:41:32,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-11-30 00:41:32,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 89. [2020-11-30 00:41:32,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-30 00:41:32,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 120 transitions. [2020-11-30 00:41:32,764 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 120 transitions. Word has length 23 [2020-11-30 00:41:32,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:32,765 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 120 transitions. [2020-11-30 00:41:32,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 00:41:32,765 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 120 transitions. [2020-11-30 00:41:32,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 00:41:32,767 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:32,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:32,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-30 00:41:32,968 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:41:32,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:32,968 INFO L82 PathProgramCache]: Analyzing trace with hash 156888005, now seen corresponding path program 1 times [2020-11-30 00:41:32,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:41:32,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122356019] [2020-11-30 00:41:32,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-30 00:41:33,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:33,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 00:41:33,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:33,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:33,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:41:33,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:33,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122356019] [2020-11-30 00:41:33,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:33,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 00:41:33,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852565777] [2020-11-30 00:41:33,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:41:33,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:41:33,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:41:33,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:41:33,121 INFO L87 Difference]: Start difference. First operand 89 states and 120 transitions. Second operand 6 states. [2020-11-30 00:41:33,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:33,271 INFO L93 Difference]: Finished difference Result 157 states and 199 transitions. [2020-11-30 00:41:33,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:41:33,279 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-11-30 00:41:33,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:33,280 INFO L225 Difference]: With dead ends: 157 [2020-11-30 00:41:33,280 INFO L226 Difference]: Without dead ends: 141 [2020-11-30 00:41:33,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:41:33,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-11-30 00:41:33,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 93. [2020-11-30 00:41:33,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-30 00:41:33,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2020-11-30 00:41:33,298 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2020-11-30 00:41:33,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:33,298 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2020-11-30 00:41:33,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:41:33,299 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2020-11-30 00:41:33,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-30 00:41:33,308 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:33,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:33,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-30 00:41:33,509 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:41:33,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:33,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1621213116, now seen corresponding path program 1 times [2020-11-30 00:41:33,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:41:33,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589348653] [2020-11-30 00:41:33,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-30 00:41:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:33,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 00:41:33,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:33,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:33,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:41:33,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:33,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589348653] [2020-11-30 00:41:33,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:33,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 00:41:33,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819841716] [2020-11-30 00:41:33,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 00:41:33,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:41:33,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 00:41:33,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:41:33,633 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 3 states. [2020-11-30 00:41:33,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:33,668 INFO L93 Difference]: Finished difference Result 96 states and 127 transitions. [2020-11-30 00:41:33,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 00:41:33,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-11-30 00:41:33,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:33,669 INFO L225 Difference]: With dead ends: 96 [2020-11-30 00:41:33,670 INFO L226 Difference]: Without dead ends: 94 [2020-11-30 00:41:33,670 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 00:41:33,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-11-30 00:41:33,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-11-30 00:41:33,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-11-30 00:41:33,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 124 transitions. [2020-11-30 00:41:33,700 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 124 transitions. Word has length 24 [2020-11-30 00:41:33,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:33,700 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 124 transitions. [2020-11-30 00:41:33,700 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 00:41:33,700 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 124 transitions. [2020-11-30 00:41:33,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 00:41:33,705 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:33,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:33,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-30 00:41:33,924 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:41:33,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:33,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1743883267, now seen corresponding path program 1 times [2020-11-30 00:41:33,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:41:33,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1657826450] [2020-11-30 00:41:33,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/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 [2020-11-30 00:41:33,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:33,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 00:41:33,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:34,020 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:34,054 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:34,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:34,086 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:41:34,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:34,167 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1657826450] [2020-11-30 00:41:34,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:34,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2020-11-30 00:41:34,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710797532] [2020-11-30 00:41:34,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 00:41:34,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:41:34,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 00:41:34,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:41:34,169 INFO L87 Difference]: Start difference. First operand 93 states and 124 transitions. Second operand 10 states. [2020-11-30 00:41:34,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:34,632 INFO L93 Difference]: Finished difference Result 131 states and 173 transitions. [2020-11-30 00:41:34,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 00:41:34,632 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2020-11-30 00:41:34,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:34,634 INFO L225 Difference]: With dead ends: 131 [2020-11-30 00:41:34,634 INFO L226 Difference]: Without dead ends: 118 [2020-11-30 00:41:34,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-11-30 00:41:34,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-11-30 00:41:34,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 89. [2020-11-30 00:41:34,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-11-30 00:41:34,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 118 transitions. [2020-11-30 00:41:34,647 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 118 transitions. Word has length 25 [2020-11-30 00:41:34,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:34,647 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 118 transitions. [2020-11-30 00:41:34,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 00:41:34,647 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 118 transitions. [2020-11-30 00:41:34,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 00:41:34,648 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:34,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:34,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-11-30 00:41:34,864 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:41:34,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:34,865 INFO L82 PathProgramCache]: Analyzing trace with hash 839729769, now seen corresponding path program 1 times [2020-11-30 00:41:34,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:41:34,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1031560316] [2020-11-30 00:41:34,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/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 [2020-11-30 00:41:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:34,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-30 00:41:34,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:34,966 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:34,994 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:35,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:35,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:41:35,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:35,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1031560316] [2020-11-30 00:41:35,118 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:35,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 11 [2020-11-30 00:41:35,118 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407166466] [2020-11-30 00:41:35,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-30 00:41:35,119 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:41:35,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-30 00:41:35,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-11-30 00:41:35,120 INFO L87 Difference]: Start difference. First operand 89 states and 118 transitions. Second operand 11 states. [2020-11-30 00:41:35,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:35,593 INFO L93 Difference]: Finished difference Result 114 states and 147 transitions. [2020-11-30 00:41:35,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 00:41:35,594 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-11-30 00:41:35,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:35,595 INFO L225 Difference]: With dead ends: 114 [2020-11-30 00:41:35,596 INFO L226 Difference]: Without dead ends: 78 [2020-11-30 00:41:35,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2020-11-30 00:41:35,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-30 00:41:35,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-11-30 00:41:35,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-11-30 00:41:35,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 98 transitions. [2020-11-30 00:41:35,606 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 98 transitions. Word has length 25 [2020-11-30 00:41:35,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:35,606 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 98 transitions. [2020-11-30 00:41:35,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-30 00:41:35,607 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 98 transitions. [2020-11-30 00:41:35,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 00:41:35,608 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:35,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:35,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-11-30 00:41:35,822 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:41:35,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:35,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1281876129, now seen corresponding path program 1 times [2020-11-30 00:41:35,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:41:35,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [846330802] [2020-11-30 00:41:35,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/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 [2020-11-30 00:41:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:35,935 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 00:41:35,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:35,955 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:35,979 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:36,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:36,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:41:36,015 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-30 00:41:36,015 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 00:41:36,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:36,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [846330802] [2020-11-30 00:41:36,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:36,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 9 [2020-11-30 00:41:36,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496120291] [2020-11-30 00:41:36,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 00:41:36,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:41:36,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 00:41:36,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-11-30 00:41:36,065 INFO L87 Difference]: Start difference. First operand 76 states and 98 transitions. Second operand 9 states. [2020-11-30 00:41:36,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:36,355 INFO L93 Difference]: Finished difference Result 84 states and 104 transitions. [2020-11-30 00:41:36,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 00:41:36,356 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-11-30 00:41:36,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:36,357 INFO L225 Difference]: With dead ends: 84 [2020-11-30 00:41:36,357 INFO L226 Difference]: Without dead ends: 74 [2020-11-30 00:41:36,357 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-11-30 00:41:36,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-30 00:41:36,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-30 00:41:36,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-30 00:41:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 94 transitions. [2020-11-30 00:41:36,370 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 94 transitions. Word has length 25 [2020-11-30 00:41:36,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:36,370 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 94 transitions. [2020-11-30 00:41:36,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 00:41:36,370 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 94 transitions. [2020-11-30 00:41:36,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 00:41:36,371 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:36,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:36,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-11-30 00:41:36,586 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:41:36,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:36,587 INFO L82 PathProgramCache]: Analyzing trace with hash -144403189, now seen corresponding path program 1 times [2020-11-30 00:41:36,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:41:36,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [191257914] [2020-11-30 00:41:36,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/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 [2020-11-30 00:41:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:36,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 00:41:36,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:36,742 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:36,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:36,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:41:37,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:37,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [191257914] [2020-11-30 00:41:37,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:37,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-30 00:41:37,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790460816] [2020-11-30 00:41:37,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 00:41:37,204 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:41:37,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 00:41:37,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:41:37,205 INFO L87 Difference]: Start difference. First operand 74 states and 94 transitions. Second operand 10 states. [2020-11-30 00:41:37,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:37,625 INFO L93 Difference]: Finished difference Result 82 states and 101 transitions. [2020-11-30 00:41:37,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 00:41:37,626 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-11-30 00:41:37,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:37,627 INFO L225 Difference]: With dead ends: 82 [2020-11-30 00:41:37,627 INFO L226 Difference]: Without dead ends: 74 [2020-11-30 00:41:37,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2020-11-30 00:41:37,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-30 00:41:37,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-30 00:41:37,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-30 00:41:37,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2020-11-30 00:41:37,634 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 26 [2020-11-30 00:41:37,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:37,634 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2020-11-30 00:41:37,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 00:41:37,635 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2020-11-30 00:41:37,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 00:41:37,635 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:37,636 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:37,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-11-30 00:41:37,836 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:41:37,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:37,837 INFO L82 PathProgramCache]: Analyzing trace with hash -953749815, now seen corresponding path program 1 times [2020-11-30 00:41:37,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:41:37,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [827115314] [2020-11-30 00:41:37,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/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 [2020-11-30 00:41:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:37,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 00:41:37,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:38,082 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:38,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:38,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:41:38,369 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 00:41:38,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:38,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [827115314] [2020-11-30 00:41:38,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:38,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 16 [2020-11-30 00:41:38,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332255877] [2020-11-30 00:41:38,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-30 00:41:38,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:41:38,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-30 00:41:38,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-11-30 00:41:38,530 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 16 states. [2020-11-30 00:41:39,620 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-30 00:41:40,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:40,555 INFO L93 Difference]: Finished difference Result 154 states and 169 transitions. [2020-11-30 00:41:40,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 00:41:40,556 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 26 [2020-11-30 00:41:40,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:40,557 INFO L225 Difference]: With dead ends: 154 [2020-11-30 00:41:40,557 INFO L226 Difference]: Without dead ends: 134 [2020-11-30 00:41:40,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2020-11-30 00:41:40,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-11-30 00:41:40,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 72. [2020-11-30 00:41:40,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-30 00:41:40,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2020-11-30 00:41:40,565 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 26 [2020-11-30 00:41:40,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:40,565 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2020-11-30 00:41:40,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-30 00:41:40,566 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2020-11-30 00:41:40,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 00:41:40,566 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:40,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:40,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-11-30 00:41:40,785 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:41:40,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:40,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1548503636, now seen corresponding path program 1 times [2020-11-30 00:41:40,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:41:40,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686088041] [2020-11-30 00:41:40,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-11-30 00:41:40,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:40,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-30 00:41:40,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:40,915 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:40,916 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:40,933 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:41,287 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2020-11-30 00:41:41,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:41,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:41:41,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:41,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686088041] [2020-11-30 00:41:41,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:41,510 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 15 [2020-11-30 00:41:41,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792632848] [2020-11-30 00:41:41,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-30 00:41:41,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:41:41,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-30 00:41:41,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-11-30 00:41:41,511 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand 15 states. [2020-11-30 00:41:43,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:43,988 INFO L93 Difference]: Finished difference Result 195 states and 205 transitions. [2020-11-30 00:41:43,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-11-30 00:41:43,988 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2020-11-30 00:41:43,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:43,990 INFO L225 Difference]: With dead ends: 195 [2020-11-30 00:41:43,990 INFO L226 Difference]: Without dead ends: 158 [2020-11-30 00:41:43,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=455, Invalid=1437, Unknown=0, NotChecked=0, Total=1892 [2020-11-30 00:41:43,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-30 00:41:43,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 43. [2020-11-30 00:41:43,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-30 00:41:43,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2020-11-30 00:41:43,998 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 27 [2020-11-30 00:41:43,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:43,998 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2020-11-30 00:41:43,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-30 00:41:43,998 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2020-11-30 00:41:43,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-30 00:41:43,999 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:43,999 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:44,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-11-30 00:41:44,213 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:41:44,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:44,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1423958792, now seen corresponding path program 1 times [2020-11-30 00:41:44,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:41:44,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14673521] [2020-11-30 00:41:44,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-11-30 00:41:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:44,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-30 00:41:44,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:44,343 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:44,677 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2020-11-30 00:41:44,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:44,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:41:44,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:44,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14673521] [2020-11-30 00:41:44,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:44,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [] total 12 [2020-11-30 00:41:44,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59161326] [2020-11-30 00:41:44,936 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 00:41:44,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:41:44,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 00:41:44,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-11-30 00:41:44,937 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand 12 states. [2020-11-30 00:41:46,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:46,172 INFO L93 Difference]: Finished difference Result 125 states and 140 transitions. [2020-11-30 00:41:46,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-30 00:41:46,172 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28 [2020-11-30 00:41:46,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:46,173 INFO L225 Difference]: With dead ends: 125 [2020-11-30 00:41:46,173 INFO L226 Difference]: Without dead ends: 101 [2020-11-30 00:41:46,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 39 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=209, Invalid=603, Unknown=0, NotChecked=0, Total=812 [2020-11-30 00:41:46,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-30 00:41:46,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 41. [2020-11-30 00:41:46,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-30 00:41:46,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-11-30 00:41:46,180 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2020-11-30 00:41:46,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:46,180 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-11-30 00:41:46,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 00:41:46,180 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-11-30 00:41:46,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-30 00:41:46,181 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:46,181 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:46,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-11-30 00:41:46,391 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:41:46,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:46,392 INFO L82 PathProgramCache]: Analyzing trace with hash 489956430, now seen corresponding path program 1 times [2020-11-30 00:41:46,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:41:46,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1412852506] [2020-11-30 00:41:46,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2020-11-30 00:41:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:46,522 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-30 00:41:46,524 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:46,562 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:46,589 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:46,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:46,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:41:47,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:47,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1412852506] [2020-11-30 00:41:47,033 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:47,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-30 00:41:47,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742743911] [2020-11-30 00:41:47,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 00:41:47,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:41:47,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 00:41:47,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:41:47,035 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 10 states. [2020-11-30 00:41:47,610 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-11-30 00:41:47,891 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-11-30 00:41:48,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:48,200 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-11-30 00:41:48,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:41:48,202 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-11-30 00:41:48,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:48,202 INFO L225 Difference]: With dead ends: 52 [2020-11-30 00:41:48,202 INFO L226 Difference]: Without dead ends: 41 [2020-11-30 00:41:48,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-11-30 00:41:48,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-30 00:41:48,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-11-30 00:41:48,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-30 00:41:48,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2020-11-30 00:41:48,211 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 32 [2020-11-30 00:41:48,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:48,211 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2020-11-30 00:41:48,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 00:41:48,212 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2020-11-30 00:41:48,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-30 00:41:48,212 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:48,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:48,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2020-11-30 00:41:48,423 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:41:48,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:48,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1191021008, now seen corresponding path program 1 times [2020-11-30 00:41:48,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:41:48,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [903927724] [2020-11-30 00:41:48,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2020-11-30 00:41:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:48,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-30 00:41:48,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:48,543 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:48,572 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:48,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:48,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:41:48,690 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-11-30 00:41:48,690 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 00:41:48,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:48,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [903927724] [2020-11-30 00:41:48,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:48,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 14 [2020-11-30 00:41:48,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38195325] [2020-11-30 00:41:48,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-30 00:41:48,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:41:48,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-30 00:41:48,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-11-30 00:41:48,834 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand 14 states. [2020-11-30 00:41:49,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:49,595 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2020-11-30 00:41:49,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 00:41:49,595 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2020-11-30 00:41:49,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:49,596 INFO L225 Difference]: With dead ends: 55 [2020-11-30 00:41:49,596 INFO L226 Difference]: Without dead ends: 41 [2020-11-30 00:41:49,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2020-11-30 00:41:49,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-30 00:41:49,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-11-30 00:41:49,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-30 00:41:49,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-11-30 00:41:49,602 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 32 [2020-11-30 00:41:49,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:49,602 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-11-30 00:41:49,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-30 00:41:49,602 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-11-30 00:41:49,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-30 00:41:49,602 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:49,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:49,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2020-11-30 00:41:49,803 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:41:49,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:49,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1654102483, now seen corresponding path program 1 times [2020-11-30 00:41:49,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:41:49,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1672336899] [2020-11-30 00:41:49,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/mathsat Starting monitored process 19 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with mathsat -unsat_core_generation=3 [2020-11-30 00:41:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:49,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 00:41:49,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:49,942 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:41:50,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:50,035 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:41:50,134 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 00:41:50,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:50,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1672336899] [2020-11-30 00:41:50,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:50,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-11-30 00:41:50,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317302356] [2020-11-30 00:41:50,204 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-30 00:41:50,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:41:50,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-30 00:41:50,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-11-30 00:41:50,205 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 12 states. [2020-11-30 00:41:50,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:50,969 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2020-11-30 00:41:50,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 00:41:50,969 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-11-30 00:41:50,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:50,970 INFO L225 Difference]: With dead ends: 79 [2020-11-30 00:41:50,970 INFO L226 Difference]: Without dead ends: 61 [2020-11-30 00:41:50,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-11-30 00:41:50,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-30 00:41:50,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 39. [2020-11-30 00:41:50,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-30 00:41:50,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-11-30 00:41:50,977 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 33 [2020-11-30 00:41:50,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:50,977 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-11-30 00:41:50,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-30 00:41:50,978 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-11-30 00:41:50,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-30 00:41:50,978 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:41:50,978 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:41:51,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3 [2020-11-30 00:41:51,195 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:41:51,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:41:51,196 INFO L82 PathProgramCache]: Analyzing trace with hash 798574185, now seen corresponding path program 1 times [2020-11-30 00:41:51,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-30 00:41:51,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [93955960] [2020-11-30 00:41:51,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/mathsat Starting monitored process 20 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with mathsat -unsat_core_generation=3 [2020-11-30 00:41:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:41:51,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 00:41:51,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:41:51,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:51,305 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 00:41:51,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:41:51,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [93955960] [2020-11-30 00:41:51,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:41:51,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-30 00:41:51,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121114422] [2020-11-30 00:41:51,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:41:51,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-30 00:41:51,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:41:51,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:41:51,308 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 4 states. [2020-11-30 00:41:51,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:41:51,336 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-11-30 00:41:51,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:41:51,336 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-11-30 00:41:51,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:41:51,336 INFO L225 Difference]: With dead ends: 39 [2020-11-30 00:41:51,336 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:41:51,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:41:51,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:41:51,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:41:51,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:41:51,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:41:51,337 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2020-11-30 00:41:51,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:41:51,337 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:41:51,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:41:51,337 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:41:51,337 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:41:51,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 mathsat -unsat_core_generation=3 [2020-11-30 00:41:51,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:41:51,852 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 119 [2020-11-30 00:41:51,966 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 125 [2020-11-30 00:41:52,090 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 110 [2020-11-30 00:41:53,307 WARN L193 SmtUtils]: Spent 966.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 39 [2020-11-30 00:41:54,086 WARN L193 SmtUtils]: Spent 776.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 27 [2020-11-30 00:41:54,414 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 23 [2020-11-30 00:41:55,083 WARN L193 SmtUtils]: Spent 667.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 33 [2020-11-30 00:41:55,915 WARN L193 SmtUtils]: Spent 831.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 32 [2020-11-30 00:41:56,780 WARN L193 SmtUtils]: Spent 863.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 32 [2020-11-30 00:41:57,558 WARN L193 SmtUtils]: Spent 776.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 38 [2020-11-30 00:41:58,844 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 105 DAG size of output: 42 [2020-11-30 00:41:59,091 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 23 [2020-11-30 00:41:59,141 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 00:41:59,141 INFO L274 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2020-11-30 00:41:59,141 INFO L274 CegarLoopResult]: For program point L36(lines 36 42) no Hoare annotation was computed. [2020-11-30 00:41:59,141 INFO L274 CegarLoopResult]: For program point L69-2(line 69) no Hoare annotation was computed. [2020-11-30 00:41:59,141 INFO L274 CegarLoopResult]: For program point L36-1(lines 36 42) no Hoare annotation was computed. [2020-11-30 00:41:59,141 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-30 00:41:59,141 INFO L274 CegarLoopResult]: For program point L69-3(lines 69 70) no Hoare annotation was computed. [2020-11-30 00:41:59,141 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-30 00:41:59,142 INFO L274 CegarLoopResult]: For program point L3-2(line 3) no Hoare annotation was computed. [2020-11-30 00:41:59,142 INFO L274 CegarLoopResult]: For program point L69-5(lines 69 85) no Hoare annotation was computed. [2020-11-30 00:41:59,142 INFO L274 CegarLoopResult]: For program point L3-3(line 3) no Hoare annotation was computed. [2020-11-30 00:41:59,142 INFO L274 CegarLoopResult]: For program point L69-7(lines 69 85) no Hoare annotation was computed. [2020-11-30 00:41:59,142 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:41:59,142 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:41:59,142 INFO L274 CegarLoopResult]: For program point L53(line 53) no Hoare annotation was computed. [2020-11-30 00:41:59,142 INFO L274 CegarLoopResult]: For program point L53-2(line 53) no Hoare annotation was computed. [2020-11-30 00:41:59,142 INFO L270 CegarLoopResult]: At program point L53-3(lines 45 54) the Hoare annotation is: (let ((.cse1 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~y~0) .cse0 (= ULTIMATE.start_fmax_float_~y .cse1) .cse2) (and (not (fp.eq .cse1 .cse1)) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse0) (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse0 .cse2 (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmax_float_#res|)))) [2020-11-30 00:41:59,142 INFO L274 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-11-30 00:41:59,142 INFO L274 CegarLoopResult]: For program point L70-2(line 70) no Hoare annotation was computed. [2020-11-30 00:41:59,143 INFO L277 CegarLoopResult]: At program point L87(lines 59 88) the Hoare annotation is: true [2020-11-30 00:41:59,143 INFO L274 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-11-30 00:41:59,143 INFO L274 CegarLoopResult]: For program point L39(lines 39 42) no Hoare annotation was computed. [2020-11-30 00:41:59,143 INFO L274 CegarLoopResult]: For program point L39-1(lines 39 42) no Hoare annotation was computed. [2020-11-30 00:41:59,143 INFO L274 CegarLoopResult]: For program point L81(line 81) no Hoare annotation was computed. [2020-11-30 00:41:59,143 INFO L274 CegarLoopResult]: For program point L81-2(lines 81 84) no Hoare annotation was computed. [2020-11-30 00:41:59,143 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:41:59,143 INFO L270 CegarLoopResult]: At program point L57(line 57) the Hoare annotation is: (let ((.cse0 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)))) [2020-11-30 00:41:59,143 INFO L270 CegarLoopResult]: At program point L57-1(line 57) the Hoare annotation is: (and |ULTIMATE.start_main_#t~short16| (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)))) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) [2020-11-30 00:41:59,143 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-30 00:41:59,143 INFO L270 CegarLoopResult]: At program point L57-2(line 57) the Hoare annotation is: (let ((.cse0 (not |ULTIMATE.start_main_#t~short20|)) (.cse1 (not |ULTIMATE.start_main_#t~short16|)) (.cse2 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (or (and .cse0 .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0)) (not .cse2)) (and .cse0 .cse1 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse2))) [2020-11-30 00:41:59,144 INFO L270 CegarLoopResult]: At program point L57-3(line 57) the Hoare annotation is: (and (not |ULTIMATE.start_main_#t~short20|) (not |ULTIMATE.start_main_#t~short16|) |ULTIMATE.start_main_#t~short19| (let ((.cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0))) (or (and (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not .cse0)))) (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) [2020-11-30 00:41:59,144 INFO L270 CegarLoopResult]: At program point L57-4(line 57) the Hoare annotation is: (let ((.cse0 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|)) (.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse3 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) (.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)))) (or (and (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) .cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse1 .cse2 (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmax_float_#res|)) (and (not (fp.eq .cse3 .cse3)) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse1) (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~y~0) .cse0 (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~y~0) .cse1 (= ULTIMATE.start_fmax_float_~y .cse3) .cse2))) [2020-11-30 00:41:59,144 INFO L270 CegarLoopResult]: At program point L57-5(line 57) the Hoare annotation is: (let ((.cse0 (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|)) (.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse2 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) .cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~y~0) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~y~0) |ULTIMATE.start_main_#t~short24| .cse1 (= ULTIMATE.start_fmax_float_~y (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))) .cse2) (and (= ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~res~0) .cse0 |ULTIMATE.start_main_#t~short24| (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse1 .cse2 (= ULTIMATE.start_main_~y~0 |ULTIMATE.start_fmax_float_#res|)))) [2020-11-30 00:41:59,144 INFO L270 CegarLoopResult]: At program point L57-6(line 57) the Hoare annotation is: (or (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and (not (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse0 .cse0))) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0))) [2020-11-30 00:41:59,144 INFO L270 CegarLoopResult]: At program point L57-7(line 57) the Hoare annotation is: (and (not (let ((.cse0 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (fp.eq .cse0 .cse0))) (not (fp.eq ULTIMATE.start___fpclassify_float_~x ULTIMATE.start___fpclassify_float_~x)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq |ULTIMATE.start_fmax_float_#res| ULTIMATE.start_main_~x~0) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_main_~res~0 ULTIMATE.start_main_~x~0) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) [2020-11-30 00:41:59,144 INFO L274 CegarLoopResult]: For program point L33(lines 33 42) no Hoare annotation was computed. [2020-11-30 00:41:59,144 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:41:59,144 INFO L274 CegarLoopResult]: For program point L33-1(lines 33 42) no Hoare annotation was computed. [2020-11-30 00:41:59,144 INFO L274 CegarLoopResult]: For program point L25-1(lines 25 29) no Hoare annotation was computed. [2020-11-30 00:41:59,144 INFO L270 CegarLoopResult]: At program point L25-2(lines 25 29) the Hoare annotation is: (let ((.cse1 (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) (.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse0 (not .cse1)) (and (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) .cse1 (= ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmax_float_~x ULTIMATE.start___fpclassify_float_~x) .cse0))) [2020-11-30 00:41:59,144 INFO L274 CegarLoopResult]: For program point L25-3(lines 22 43) no Hoare annotation was computed. [2020-11-30 00:41:59,145 INFO L274 CegarLoopResult]: For program point L25-5(lines 25 29) no Hoare annotation was computed. [2020-11-30 00:41:59,145 INFO L270 CegarLoopResult]: At program point L25-6(lines 25 29) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x)) (.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0))) (or (and .cse0 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse1) (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) .cse0 (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse1 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))))) [2020-11-30 00:41:59,145 INFO L274 CegarLoopResult]: For program point L25-7(lines 22 43) no Hoare annotation was computed. [2020-11-30 00:41:59,145 INFO L274 CegarLoopResult]: For program point L50(lines 50 52) no Hoare annotation was computed. [2020-11-30 00:41:59,145 INFO L274 CegarLoopResult]: For program point L75(line 75) no Hoare annotation was computed. [2020-11-30 00:41:59,145 INFO L270 CegarLoopResult]: At program point L42(lines 22 43) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (= (_ bv0 32) |ULTIMATE.start_isnan_float_#res|) (fp.eq ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~y~0) .cse0 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (let ((.cse1 (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0)))) (and (= ULTIMATE.start_fmax_float_~x .cse1) (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (= ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) (= ULTIMATE.start_fmax_float_~x ULTIMATE.start___fpclassify_float_~x) (fp.eq .cse1 .cse1) .cse0)))) [2020-11-30 00:41:59,145 INFO L270 CegarLoopResult]: At program point L42-1(lines 22 43) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start___fpclassify_float_~x)) (.cse0 (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) (.cse2 (= ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0)) (.cse3 (= ULTIMATE.start_fmax_float_~y (fp ((_ extract 31 31) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 30 23) ULTIMATE.start___fpclassify_float_~w~0) ((_ extract 22 0) ULTIMATE.start___fpclassify_float_~w~0))))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (not .cse0) (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_main_~y~0) .cse1 .cse2 .cse3 (not (fp.eq ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0))) (and .cse1 (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)) (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_main_~x~0) .cse0 .cse2 .cse3))) [2020-11-30 00:41:59,145 INFO L274 CegarLoopResult]: For program point L75-2(lines 75 78) no Hoare annotation was computed. [2020-11-30 00:41:59,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:41:59 BoogieIcfgContainer [2020-11-30 00:41:59,181 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:41:59,182 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:41:59,182 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:41:59,183 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:41:59,183 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:41:26" (3/4) ... [2020-11-30 00:41:59,188 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:41:59,203 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2020-11-30 00:41:59,204 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-30 00:41:59,205 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-30 00:41:59,206 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:41:59,237 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (1bv32 == \result && !~fp.eq~FLOAT(x, x)) [2020-11-30 00:41:59,238 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (aux-isnan_float(x) && !isnan_float(y)-aux && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && !~fp.eq~FLOAT(x, x) [2020-11-30 00:41:59,238 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && 0bv32 == \result) && ~fp.eq~FLOAT(x, x)) [2020-11-30 00:41:59,239 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && aux-!isnan_float(x) && isnan_float(y)-aux) && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && ~fp.eq~FLOAT(x, x) [2020-11-30 00:41:59,239 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) || (((((1bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && x == x) && x == x) && y == y) [2020-11-30 00:41:59,240 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) || (((((((x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && !(0bv32 == \result)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && x == x) && x == x) && ~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) [2020-11-30 00:41:59,240 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!~fp.eq~FLOAT(x, x) && y == x) && ~fp.eq~FLOAT(\result, y)) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) || ((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y)) || ((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result) [2020-11-30 00:41:59,241 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((y == x && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y) || (((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && y == x) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) [2020-11-30 00:41:59,241 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((y == res && 1bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result) || (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && y == y)) || (((((((!~fp.eq~FLOAT(x, x) && y == x) && ~fp.eq~FLOAT(res, y)) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, y)) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) [2020-11-30 00:41:59,241 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!~fp.eq~FLOAT(x, x) && !(0bv32 == \result)) && ~fp.eq~FLOAT(y, y)) && y == x) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) || ((((((y == x && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) [2020-11-30 00:41:59,242 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && y == x) && ~fp.eq~FLOAT(res, y)) && ~fp.eq~FLOAT(\result, y)) && aux-isnan_float(x) && !isnan_float(y)-aux) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) || ((((((y == res && 0bv32 == \result) && aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result) [2020-11-30 00:41:59,243 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (1bv32 == \result && !~fp.eq~FLOAT(x, x)) || (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && y == y) [2020-11-30 00:41:59,243 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && y == y [2020-11-30 00:41:59,283 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1aa8158d-5edd-4f93-bc55-c0c691c11650/bin/uautomizer/witness.graphml [2020-11-30 00:41:59,283 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:41:59,285 INFO L168 Benchmark]: Toolchain (without parser) took 34310.63 ms. Allocated memory was 67.1 MB in the beginning and 121.6 MB in the end (delta: 54.5 MB). Free memory was 46.4 MB in the beginning and 102.4 MB in the end (delta: -56.0 MB). Peak memory consumption was 67.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:41:59,285 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 50.3 MB. Free memory was 31.3 MB in the beginning and 31.3 MB in the end (delta: 41.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:41:59,286 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.78 ms. Allocated memory is still 67.1 MB. Free memory was 46.3 MB in the beginning and 50.5 MB in the end (delta: -4.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:41:59,286 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.17 ms. Allocated memory is still 67.1 MB. Free memory was 50.3 MB in the beginning and 48.5 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:41:59,287 INFO L168 Benchmark]: Boogie Preprocessor took 80.05 ms. Allocated memory is still 67.1 MB. Free memory was 48.5 MB in the beginning and 46.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:41:59,287 INFO L168 Benchmark]: RCFGBuilder took 833.60 ms. Allocated memory is still 67.1 MB. Free memory was 46.5 MB in the beginning and 44.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. [2020-11-30 00:41:59,288 INFO L168 Benchmark]: TraceAbstraction took 32826.80 ms. Allocated memory was 67.1 MB in the beginning and 121.6 MB in the end (delta: 54.5 MB). Free memory was 44.5 MB in the beginning and 39.0 MB in the end (delta: 5.5 MB). Peak memory consumption was 64.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:41:59,288 INFO L168 Benchmark]: Witness Printer took 101.03 ms. Allocated memory is still 121.6 MB. Free memory was 39.0 MB in the beginning and 102.4 MB in the end (delta: -63.4 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:41:59,291 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 50.3 MB. Free memory was 31.3 MB in the beginning and 31.3 MB in the end (delta: 41.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 375.78 ms. Allocated memory is still 67.1 MB. Free memory was 46.3 MB in the beginning and 50.5 MB in the end (delta: -4.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 84.17 ms. Allocated memory is still 67.1 MB. Free memory was 50.3 MB in the beginning and 48.5 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 80.05 ms. Allocated memory is still 67.1 MB. Free memory was 48.5 MB in the beginning and 46.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 833.60 ms. Allocated memory is still 67.1 MB. Free memory was 46.5 MB in the beginning and 44.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 22.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 32826.80 ms. Allocated memory was 67.1 MB in the beginning and 121.6 MB in the end (delta: 54.5 MB). Free memory was 44.5 MB in the beginning and 39.0 MB in the end (delta: 5.5 MB). Peak memory consumption was 64.7 MB. Max. memory is 16.1 GB. * Witness Printer took 101.03 ms. Allocated memory is still 121.6 MB. Free memory was 39.0 MB in the beginning and 102.4 MB in the end (delta: -63.4 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 45]: Loop Invariant Derived loop invariant: ((((((!~fp.eq~FLOAT(x, x) && y == x) && ~fp.eq~FLOAT(\result, y)) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) || ((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && ~fp.eq~FLOAT(\result, x)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y)) || ((((0bv32 == \result && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && y == y - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (1bv32 == \result && !~fp.eq~FLOAT(x, x)) || (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && y == y) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((((y == x && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && y == y) || (((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && y == x) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((((((!~fp.eq~FLOAT(x, x) && !(0bv32 == \result)) && ~fp.eq~FLOAT(y, y)) && y == x) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) || ((((((y == x && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && y == x) && ~fp.eq~FLOAT(res, y)) && ~fp.eq~FLOAT(\result, y)) && aux-isnan_float(x) && !isnan_float(y)-aux) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) || ((((((y == res && 0bv32 == \result) && aux-isnan_float(x) && !isnan_float(y)-aux) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) || (((((((x == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]) && !(0bv32 == \result)) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && x == x) && x == x) && ~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]))) && y == y) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((((y == res && 1bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) && y == \result) || (((((((!~fp.eq~FLOAT(~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0]), ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) && 0bv32 == \result) && ~fp.eq~FLOAT(\result, x)) && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(res, x)) && ~fp.eq~FLOAT(x, x)) && y == y)) || (((((((!~fp.eq~FLOAT(x, x) && y == x) && ~fp.eq~FLOAT(res, y)) && 1bv32 == \result) && ~fp.eq~FLOAT(\result, y)) && y == y) && y == ~fp~LONGDOUBLE(w[31:31], w[30:23], w[22:0])) && !~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && aux-!isnan_float(x) && isnan_float(y)-aux) && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && ~fp.eq~FLOAT(x, x) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: ((((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y)) && !~fp.eq~FLOAT(x, x)) || (((!aux-(isnan_float(x) && !isnan_float(y)) || (!isnan_float(x) && isnan_float(y))-aux && !aux-isnan_float(x) && !isnan_float(y)-aux) && 0bv32 == \result) && ~fp.eq~FLOAT(x, x)) - InvariantResult [Line: 59]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((((!~fp.eq~FLOAT(x, x) && 0bv32 == \result) && ~fp.eq~FLOAT(y, y)) && y == y) && !~fp.eq~FLOAT(x, x)) || (((((1bv32 == \result && !~fp.eq~FLOAT(y, y)) && ~fp.eq~FLOAT(x, x)) && x == x) && x == x) && y == y) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (aux-isnan_float(x) && !isnan_float(y)-aux && ((0bv32 == \result && ~fp.eq~FLOAT(y, y)) || (1bv32 == \result && !~fp.eq~FLOAT(y, y)))) && !~fp.eq~FLOAT(x, x) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (0bv32 == \result && ~fp.eq~FLOAT(x, x)) || (1bv32 == \result && !~fp.eq~FLOAT(x, x)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 49 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 25.0s, OverallIterations: 19, TraceHistogramMax: 1, AutomataDifference: 13.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 7.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1146 SDtfs, 2441 SDslu, 4709 SDs, 0 SdLazy, 1986 SolverSat, 266 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1045 GetRequests, 768 SyntacticMatches, 12 SemanticMatches, 265 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 939 ImplicationChecksByTransitivity, 10.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 19 MinimizatonAttempts, 578 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 14 PreInvPairs, 48 NumberOfFragments, 616 HoareAnnotationTreeSize, 14 FomulaSimplifications, 626146 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 14 FomulaSimplificationsInter, 38333 FormulaSimplificationTreeSizeReductionInter, 6.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 5.1s InterpolantComputationTime, 479 NumberOfCodeBlocks, 479 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 920 ConstructedInterpolants, 33 QuantifiedInterpolants, 95765 SizeOfPredicates, 147 NumberOfNonLiveVariables, 1698 ConjunctsInSsa, 188 ConjunctsInUnsatCore, 38 InterpolantComputations, 38 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...