./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_Newton-1.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_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_Newton-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/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 63c9276a8cccd047024c328e68c3b8d4993e7244 ......................................................................................................................................................................................................................................................................................................................................... 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_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_Newton-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/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 63c9276a8cccd047024c328e68c3b8d4993e7244 ....................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:35:39,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:35:39,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:35:39,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:35:39,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:35:39,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:35:39,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:35:40,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:35:40,003 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:35:40,004 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:35:40,005 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:35:40,006 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:35:40,007 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:35:40,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:35:40,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:35:40,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:35:40,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:35:40,014 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:35:40,016 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:35:40,019 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:35:40,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:35:40,023 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:35:40,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:35:40,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:35:40,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:35:40,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:35:40,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:35:40,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:35:40,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:35:40,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:35:40,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:35:40,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:35:40,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:35:40,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:35:40,038 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:35:40,038 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:35:40,039 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:35:40,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:35:40,040 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:35:40,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:35:40,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:35:40,043 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:35:40,072 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:35:40,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:35:40,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:35:40,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:35:40,075 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:35:40,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:35:40,076 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:35:40,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:35:40,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:35:40,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:35:40,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:35:40,078 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:35:40,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:35:40,078 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:35:40,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:35:40,079 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:35:40,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:35:40,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:35:40,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:35:40,081 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:35:40,081 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:35:40,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:35:40,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:35:40,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:35:40,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:35:40,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:35:40,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:35:40,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:35:40,084 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:35:40,085 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_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63c9276a8cccd047024c328e68c3b8d4993e7244 [2020-11-29 19:35:40,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:35:40,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:35:40,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:35:40,356 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:35:40,356 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:35:40,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/bin/uautomizer/../../sv-benchmarks/c/float-benchs/inv_Newton-1.c [2020-11-29 19:35:40,448 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/bin/uautomizer/data/1e16830d3/b202c3d182594337998d0e64b2963e29/FLAGe087c45e3 [2020-11-29 19:35:40,927 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:35:40,928 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/sv-benchmarks/c/float-benchs/inv_Newton-1.c [2020-11-29 19:35:40,940 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/bin/uautomizer/data/1e16830d3/b202c3d182594337998d0e64b2963e29/FLAGe087c45e3 [2020-11-29 19:35:41,281 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/bin/uautomizer/data/1e16830d3/b202c3d182594337998d0e64b2963e29 [2020-11-29 19:35:41,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:35:41,287 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:35:41,299 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:35:41,299 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:35:41,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:35:41,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:35:41" (1/1) ... [2020-11-29 19:35:41,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35fc5d38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:41, skipping insertion in model container [2020-11-29 19:35:41,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:35:41" (1/1) ... [2020-11-29 19:35:41,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:35:41,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:35:41,545 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:35:41,567 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:35:41,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:35:41,625 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:35:41,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:41 WrapperNode [2020-11-29 19:35:41,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:35:41,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:35:41,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:35:41,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:35:41,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:41" (1/1) ... [2020-11-29 19:35:41,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:41" (1/1) ... [2020-11-29 19:35:41,690 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:35:41,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:35:41,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:35:41,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:35:41,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:41" (1/1) ... [2020-11-29 19:35:41,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:41" (1/1) ... [2020-11-29 19:35:41,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:41" (1/1) ... [2020-11-29 19:35:41,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:41" (1/1) ... [2020-11-29 19:35:41,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:41" (1/1) ... [2020-11-29 19:35:41,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:41" (1/1) ... [2020-11-29 19:35:41,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:41" (1/1) ... [2020-11-29 19:35:41,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:35:41,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:35:41,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:35:41,726 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:35:41,727 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/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 [2020-11-29 19:35:41,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:35:41,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:35:41,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-29 19:35:41,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-29 19:35:41,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-29 19:35:41,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:35:41,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:35:41,791 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-29 19:35:41,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 19:35:42,146 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:35:42,147 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-29 19:35:42,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:35:42 BoogieIcfgContainer [2020-11-29 19:35:42,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:35:42,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:35:42,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:35:42,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:35:42,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:35:41" (1/3) ... [2020-11-29 19:35:42,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2405fda5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:35:42, skipping insertion in model container [2020-11-29 19:35:42,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:41" (2/3) ... [2020-11-29 19:35:42,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2405fda5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:35:42, skipping insertion in model container [2020-11-29 19:35:42,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:35:42" (3/3) ... [2020-11-29 19:35:42,163 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_Newton-1.c [2020-11-29 19:35:42,173 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:35:42,177 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:35:42,186 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:35:42,205 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:35:42,206 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:35:42,206 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:35:42,206 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:35:42,206 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:35:42,206 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:35:42,206 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:35:42,206 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:35:42,217 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-11-29 19:35:42,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 19:35:42,221 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:35:42,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:35:42,222 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:35:42,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:35:42,228 INFO L82 PathProgramCache]: Analyzing trace with hash -590190995, now seen corresponding path program 1 times [2020-11-29 19:35:42,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:35:42,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901849841] [2020-11-29 19:35:42,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:35:42,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:35:42,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:35:42,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901849841] [2020-11-29 19:35:42,393 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:35:42,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:35:42,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70213011] [2020-11-29 19:35:42,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:35:42,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:35:42,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:35:42,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:35:42,418 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-11-29 19:35:42,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:35:42,435 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2020-11-29 19:35:42,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:35:42,436 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-29 19:35:42,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:35:42,449 INFO L225 Difference]: With dead ends: 26 [2020-11-29 19:35:42,450 INFO L226 Difference]: Without dead ends: 10 [2020-11-29 19:35:42,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:35:42,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-29 19:35:42,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-29 19:35:42,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-29 19:35:42,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-29 19:35:42,492 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2020-11-29 19:35:42,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:35:42,493 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-29 19:35:42,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:35:42,494 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-29 19:35:42,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 19:35:42,494 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:35:42,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:35:42,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:35:42,496 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:35:42,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:35:42,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1184816367, now seen corresponding path program 1 times [2020-11-29 19:35:42,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:35:42,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891414102] [2020-11-29 19:35:42,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:35:42,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:35:42,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:35:42,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891414102] [2020-11-29 19:35:42,657 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:35:42,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:35:42,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684015742] [2020-11-29 19:35:42,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:35:42,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:35:42,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:35:42,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:35:42,660 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 3 states. [2020-11-29 19:35:42,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:35:42,669 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-11-29 19:35:42,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:35:42,670 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-11-29 19:35:42,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:35:42,670 INFO L225 Difference]: With dead ends: 16 [2020-11-29 19:35:42,671 INFO L226 Difference]: Without dead ends: 11 [2020-11-29 19:35:42,671 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 [2020-11-29 19:35:42,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-29 19:35:42,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-29 19:35:42,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 19:35:42,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-29 19:35:42,675 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2020-11-29 19:35:42,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:35:42,675 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-29 19:35:42,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:35:42,675 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-29 19:35:42,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:35:42,676 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:35:42,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:35:42,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:35:42,676 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:35:42,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:35:42,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1873743609, now seen corresponding path program 1 times [2020-11-29 19:35:42,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:35:42,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383697831] [2020-11-29 19:35:42,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:35:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:35:42,728 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:35:42,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:35:42,831 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:35:42,871 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:35:42,871 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:35:42,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 19:35:42,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:35:42 BoogieIcfgContainer [2020-11-29 19:35:42,897 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:35:42,898 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:35:42,898 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:35:42,898 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:35:42,899 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:35:42" (3/4) ... [2020-11-29 19:35:42,901 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:35:42,902 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:35:42,904 INFO L168 Benchmark]: Toolchain (without parser) took 1615.36 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 64.6 MB in the beginning and 85.9 MB in the end (delta: -21.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:35:42,904 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 92.3 MB. Free memory is still 49.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:35:42,905 INFO L168 Benchmark]: CACSL2BoogieTranslator took 329.01 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 64.6 MB in the beginning and 87.9 MB in the end (delta: -23.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:35:42,906 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.01 ms. Allocated memory is still 111.1 MB. Free memory was 87.9 MB in the beginning and 86.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:35:42,907 INFO L168 Benchmark]: Boogie Preprocessor took 32.90 ms. Allocated memory is still 111.1 MB. Free memory was 86.4 MB in the beginning and 85.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:35:42,907 INFO L168 Benchmark]: RCFGBuilder took 425.00 ms. Allocated memory is still 111.1 MB. Free memory was 84.7 MB in the beginning and 69.1 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-29 19:35:42,908 INFO L168 Benchmark]: TraceAbstraction took 745.40 ms. Allocated memory is still 111.1 MB. Free memory was 69.1 MB in the beginning and 85.9 MB in the end (delta: -16.8 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:35:42,909 INFO L168 Benchmark]: Witness Printer took 4.16 ms. Allocated memory is still 111.1 MB. Free memory is still 85.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:35:42,912 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 92.3 MB. Free memory is still 49.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 329.01 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 64.6 MB in the beginning and 87.9 MB in the end (delta: -23.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.01 ms. Allocated memory is still 111.1 MB. Free memory was 87.9 MB in the beginning and 86.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.90 ms. Allocated memory is still 111.1 MB. Free memory was 86.4 MB in the beginning and 85.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 425.00 ms. Allocated memory is still 111.1 MB. Free memory was 84.7 MB in the beginning and 69.1 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 745.40 ms. Allocated memory is still 111.1 MB. Free memory was 69.1 MB in the beginning and 85.9 MB in the end (delta: -16.8 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. * Witness Printer took 4.16 ms. Allocated memory is still 111.1 MB. Free memory is still 85.9 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 bitwiseAnd at line 30, overapproximation of someBinaryArithmeticDOUBLEoperation at line 36, overapproximation of someBinaryDOUBLEComparisonOperation at line 53, overapproximation of to_real at line 31. Possible FailurePath: [L46] double a,r; [L48] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L26] double xi, xsi, temp; [L27] signed int cond, exp; [L28] union double_int A_u, xi_u; [L29] A_u.d = A [L30] EXPR A_u.i [L30] exp = (signed int) ((A_u.i & 0x7FF0000000000000) >> 52) - 1023 [L31] xi_u.d = 1 [L32] xi_u.i = (((long long)(1023-exp)) << 52) [L33] EXPR xi_u.d [L33] xi = xi_u.d [L34] cond = 1 [L35] COND TRUE \read(cond) [L36] xsi = 2*xi-A*xi*xi [L37] temp = xsi-xi [L38] cond = ((temp > 1e-10) || (temp < -1e-10)) [L39] xi = xsi [L35] COND FALSE !(\read(cond)) [L41] return xi; [L41] return xi; [L41] return xi; [L51] r = inv(a) [L16] COND TRUE !(cond) [L3] __assert_fail("0", "inv_Newton-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 0 SDslu, 7 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 [2020-11-29 19:35:45,401 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-11-29 19:35:45,497 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:35:45,498 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:35:45,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:35:45,500 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:35:45,500 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:35:45,501 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:35:45,501 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:35:45,501 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:35:45,502 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:35:45,503 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:35:45,503 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:35:45,506 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-29 19:35:45,556 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:35:45,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:35:45,560 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:35:45,560 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:35:45,561 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:35:45,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:35:45,561 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:35:45,561 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:35:45,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:35:45,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:35:45,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:35:45,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:35:45,563 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-29 19:35:45,564 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-29 19:35:45,564 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:35:45,564 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:35:45,564 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:35:45,565 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:35:45,565 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:35:45,565 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:35:45,565 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:35:45,565 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:35:45,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:35:45,566 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:35:45,566 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:35:45,566 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:35:45,567 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-29 19:35:45,567 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-29 19:35:45,567 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:35:45,567 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:35:45,567 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-29 19:35:45,568 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_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63c9276a8cccd047024c328e68c3b8d4993e7244 [2020-11-29 19:35:46,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:35:46,061 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:35:46,066 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:35:46,068 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:35:46,069 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:35:46,070 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/bin/uautomizer/../../sv-benchmarks/c/float-benchs/inv_Newton-1.c [2020-11-29 19:35:46,148 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/bin/uautomizer/data/c95650105/978c8ed650504311b87933726ec71f43/FLAGc2ab61a9c [2020-11-29 19:35:46,715 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:35:46,716 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/sv-benchmarks/c/float-benchs/inv_Newton-1.c [2020-11-29 19:35:46,725 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/bin/uautomizer/data/c95650105/978c8ed650504311b87933726ec71f43/FLAGc2ab61a9c [2020-11-29 19:35:47,072 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/bin/uautomizer/data/c95650105/978c8ed650504311b87933726ec71f43 [2020-11-29 19:35:47,074 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:35:47,076 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:35:47,077 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:35:47,078 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:35:47,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:35:47,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:35:47" (1/1) ... [2020-11-29 19:35:47,090 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41475fc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:47, skipping insertion in model container [2020-11-29 19:35:47,090 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:35:47" (1/1) ... [2020-11-29 19:35:47,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:35:47,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:35:47,284 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:35:47,297 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:35:47,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:35:47,406 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:35:47,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:47 WrapperNode [2020-11-29 19:35:47,407 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:35:47,409 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:35:47,409 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:35:47,411 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:35:47,418 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:47" (1/1) ... [2020-11-29 19:35:47,442 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:47" (1/1) ... [2020-11-29 19:35:47,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:35:47,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:35:47,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:35:47,474 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:35:47,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:47" (1/1) ... [2020-11-29 19:35:47,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:47" (1/1) ... [2020-11-29 19:35:47,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:47" (1/1) ... [2020-11-29 19:35:47,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:47" (1/1) ... [2020-11-29 19:35:47,517 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:47" (1/1) ... [2020-11-29 19:35:47,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:47" (1/1) ... [2020-11-29 19:35:47,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:47" (1/1) ... [2020-11-29 19:35:47,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:35:47,541 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:35:47,542 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:35:47,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:35:47,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:47" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/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 [2020-11-29 19:35:47,612 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-29 19:35:47,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-29 19:35:47,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-29 19:35:47,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:35:47,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2020-11-29 19:35:47,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:35:47,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:35:47,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2020-11-29 19:35:47,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-29 19:35:50,220 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:35:50,220 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-29 19:35:50,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:35:50 BoogieIcfgContainer [2020-11-29 19:35:50,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:35:50,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:35:50,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:35:50,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:35:50,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:35:47" (1/3) ... [2020-11-29 19:35:50,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21807f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:35:50, skipping insertion in model container [2020-11-29 19:35:50,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:35:47" (2/3) ... [2020-11-29 19:35:50,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21807f38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:35:50, skipping insertion in model container [2020-11-29 19:35:50,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:35:50" (3/3) ... [2020-11-29 19:35:50,230 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_Newton-1.c [2020-11-29 19:35:50,241 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:35:50,246 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 19:35:50,256 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 19:35:50,275 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:35:50,275 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:35:50,275 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:35:50,276 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:35:50,276 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:35:50,276 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:35:50,276 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:35:50,276 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:35:50,288 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-11-29 19:35:50,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 19:35:50,293 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:35:50,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:35:50,294 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:35:50,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:35:50,300 INFO L82 PathProgramCache]: Analyzing trace with hash -590190995, now seen corresponding path program 1 times [2020-11-29 19:35:50,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:35:50,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237104497] [2020-11-29 19:35:50,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/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 [2020-11-29 19:35:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:35:50,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-29 19:35:50,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:35:50,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:35:50,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:35:50,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:35:50,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237104497] [2020-11-29 19:35:50,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:35:50,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-29 19:35:50,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516238257] [2020-11-29 19:35:50,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:35:50,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:35:50,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:35:50,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:35:50,551 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2020-11-29 19:35:50,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:35:50,578 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2020-11-29 19:35:50,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:35:50,580 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-29 19:35:50,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:35:50,589 INFO L225 Difference]: With dead ends: 26 [2020-11-29 19:35:50,589 INFO L226 Difference]: Without dead ends: 10 [2020-11-29 19:35:50,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:35:50,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-29 19:35:50,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-29 19:35:50,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-29 19:35:50,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-29 19:35:50,624 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2020-11-29 19:35:50,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:35:50,624 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-29 19:35:50,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:35:50,625 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-29 19:35:50,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 19:35:50,625 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:35:50,626 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:35:50,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-29 19:35:50,851 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:35:50,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:35:50,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1184816367, now seen corresponding path program 1 times [2020-11-29 19:35:50,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:35:50,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265276979] [2020-11-29 19:35:50,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/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 [2020-11-29 19:35:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:35:50,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:35:50,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:35:51,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:35:51,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:35:51,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:35:51,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265276979] [2020-11-29 19:35:51,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:35:51,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-29 19:35:51,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799989326] [2020-11-29 19:35:51,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:35:51,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-29 19:35:51,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:35:51,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:35:51,019 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 4 states. [2020-11-29 19:35:53,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:35:53,351 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-11-29 19:35:53,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:35:53,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-29 19:35:53,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:35:53,352 INFO L225 Difference]: With dead ends: 16 [2020-11-29 19:35:53,352 INFO L226 Difference]: Without dead ends: 11 [2020-11-29 19:35:53,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:35:53,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-29 19:35:53,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-29 19:35:53,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 19:35:53,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-29 19:35:53,356 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2020-11-29 19:35:53,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:35:53,356 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-29 19:35:53,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:35:53,356 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-29 19:35:53,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:35:53,357 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:35:53,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:35:53,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-29 19:35:53,558 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:35:53,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:35:53,558 INFO L82 PathProgramCache]: Analyzing trace with hash -1873743609, now seen corresponding path program 1 times [2020-11-29 19:35:53,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-29 19:35:53,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [851073784] [2020-11-29 19:35:53,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/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 [2020-11-29 19:35:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:35:54,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 19:35:54,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:35:54,565 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:35:54,715 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 26 [2020-11-29 19:35:54,736 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2020-11-29 19:35:54,764 INFO L625 ElimStorePlain]: treesize reduction 29, result has 34.1 percent of original size [2020-11-29 19:35:54,764 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:35:54,813 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:35:54,833 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 123 treesize of output 117 [2020-11-29 19:35:54,855 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 2 xjuncts. [2020-11-29 19:35:54,886 INFO L625 ElimStorePlain]: treesize reduction 77, result has 45.0 percent of original size [2020-11-29 19:35:54,887 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:35:54,973 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:35:54,980 INFO L545 ElimStorePlain]: Start of recursive call 1: 6 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-11-29 19:35:54,980 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:174, output treesize:101 [2020-11-29 19:36:23,181 WARN L193 SmtUtils]: Spent 12.41 s on a formula simplification that was a NOOP. DAG size: 48 [2020-11-29 19:36:25,288 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (exists ((|v_skolemized_q#valueAsBitvector_3| (_ BitVec 64))) (let ((.cse0 (fp ((_ extract 63 63) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 62 52) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 51 0) |v_skolemized_q#valueAsBitvector_3|)))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 30.0)) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 20.0)) (= |c_ULTIMATE.start_inv_#res| (let ((.cse1 (let ((.cse2 (let ((.cse3 (let ((.cse4 ((_ sign_extend 32) (_ bv52 32)))) (bvshl ((_ sign_extend 32) (bvadd (bvneg (bvadd ((_ extract 31 0) (bvashr (bvand (_ bv9218868437227405312 64) (concat ((_ extract 63 32) |v_skolemized_q#valueAsBitvector_3|) ((_ extract 31 0) |v_skolemized_q#valueAsBitvector_3|))) .cse4)) (_ bv4294966273 32))) (_ bv1023 32))) .cse4)))) (concat ((_ extract 63 32) .cse3) ((_ extract 31 0) .cse3))))) (fp ((_ extract 63 63) .cse2) ((_ extract 62 52) .cse2) ((_ extract 51 0) .cse2))))) (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) .cse1) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode .cse0 .cse1) .cse1)))))))) is different from false [2020-11-29 19:36:25,297 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:36:29,041 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:36:34,644 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:36:34,645 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-29 19:36:43,056 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_inv_~xi~0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_inv_~A c_ULTIMATE.start_inv_~xi~0) c_ULTIMATE.start_inv_~xi~0)))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 50.0))) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) is different from false [2020-11-29 19:36:45,156 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (fp.sub c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)) c_ULTIMATE.start_inv_~xi~0) (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode c_ULTIMATE.start_inv_~A c_ULTIMATE.start_inv_~xi~0) c_ULTIMATE.start_inv_~xi~0)))) (and (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 3.0 50.0))) (fp.geq .cse0 ((_ to_fp 11 53) c_currentRoundingMode (_ bv0 32))))) is different from true [2020-11-29 19:36:45,162 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-29 19:36:48,143 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1060 treesize of output 1006 [2020-11-29 19:36:50,314 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:36:52,087 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:36:52,186 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-29 19:36:56,405 WARN L193 SmtUtils]: Spent 4.22 s on a formula simplification that was a NOOP. DAG size: 47 [2020-11-29 19:36:56,405 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:36:56,405 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:37:00,931 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1060 treesize of output 1006 [2020-11-29 19:37:04,430 INFO L545 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-11-29 19:37:22,286 WARN L193 SmtUtils]: Spent 17.85 s on a formula simplification. DAG size of input: 78 DAG size of output: 47 [2020-11-29 19:37:22,287 INFO L625 ElimStorePlain]: treesize reduction 723, result has 49.5 percent of original size [2020-11-29 19:37:22,287 INFO L545 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:37:46,619 WARN L193 SmtUtils]: Spent 24.33 s on a formula simplification that was a NOOP. DAG size: 56 [2020-11-29 19:37:46,619 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:37:51,135 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 709 treesize of output 691 [2020-11-29 19:37:53,303 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:37:54,590 INFO L173 IndexEqualityManager]: detected equality via solver [2020-11-29 19:37:54,683 INFO L545 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-11-29 19:37:57,256 WARN L193 SmtUtils]: Spent 2.57 s on a formula simplification that was a NOOP. DAG size: 38 [2020-11-29 19:37:57,257 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:37:57,257 INFO L545 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:38:01,830 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 709 treesize of output 691 [2020-11-29 19:38:04,686 INFO L545 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2020-11-29 19:38:24,126 WARN L193 SmtUtils]: Spent 19.44 s on a formula simplification. DAG size of input: 56 DAG size of output: 38 [2020-11-29 19:38:24,126 INFO L625 ElimStorePlain]: treesize reduction 435, result has 49.2 percent of original size [2020-11-29 19:38:24,127 INFO L545 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-29 19:38:50,049 WARN L193 SmtUtils]: Spent 25.92 s on a formula simplification that was a NOOP. DAG size: 47 [2020-11-29 19:38:50,050 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-29 19:38:50,051 INFO L545 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 2 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2020-11-29 19:38:50,051 INFO L244 ElimStorePlain]: Needed 9 recursive calls to eliminate 7 variables, input treesize:2143, output treesize:865 [2020-11-29 19:38:56,481 WARN L195 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2020-11-29 19:38:56,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [851073784] [2020-11-29 19:38:56,482 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") [2020-11-29 19:38:56,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [395982933] [2020-11-29 19:38:56,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/bin/uautomizer/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-29 19:38:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:38:59,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-29 19:38:59,221 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@eebf402 [2020-11-29 19:38:59,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158245329] [2020-11-29 19:38:59,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_29fa0cd2-cc87-4e14-a839-e66e0ed0f16f/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:39:04,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:39:04,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-29 19:39:04,586 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: ManagedScript already locked by de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker@eebf402 [2020-11-29 19:39:04,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:39:04,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-11-29 19:39:04,587 ERROR L205 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2020-11-29 19:39:04,587 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:39:05,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3,5 cvc4 --incremental --print-success --lang smt --rewrite-divk,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:39:05,205 WARN L238 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-11-29 19:39:05,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:39:05 BoogieIcfgContainer [2020-11-29 19:39:05,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:39:05,207 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:39:05,207 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:39:05,207 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:39:05,208 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:35:50" (3/4) ... [2020-11-29 19:39:05,211 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:39:05,212 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:39:05,213 INFO L168 Benchmark]: Toolchain (without parser) took 198136.82 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 29.1 MB in the beginning and 29.1 MB in the end (delta: 26.1 kB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:39:05,214 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 52.4 MB. Free memory was 34.2 MB in the beginning and 34.2 MB in the end (delta: 22.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:39:05,215 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.44 ms. Allocated memory is still 52.4 MB. Free memory was 28.9 MB in the beginning and 34.5 MB in the end (delta: -5.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:39:05,215 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.17 ms. Allocated memory is still 52.4 MB. Free memory was 34.4 MB in the beginning and 32.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:39:05,216 INFO L168 Benchmark]: Boogie Preprocessor took 66.76 ms. Allocated memory is still 52.4 MB. Free memory was 32.9 MB in the beginning and 31.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:39:05,217 INFO L168 Benchmark]: RCFGBuilder took 2680.88 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 31.1 MB in the beginning and 41.6 MB in the end (delta: -10.5 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:39:05,217 INFO L168 Benchmark]: TraceAbstraction took 194982.65 ms. Allocated memory is still 62.9 MB. Free memory was 41.0 MB in the beginning and 29.6 MB in the end (delta: 11.4 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2020-11-29 19:39:05,218 INFO L168 Benchmark]: Witness Printer took 4.91 ms. Allocated memory is still 62.9 MB. Free memory was 29.5 MB in the beginning and 29.1 MB in the end (delta: 432.6 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:39:05,234 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 52.4 MB. Free memory was 34.2 MB in the beginning and 34.2 MB in the end (delta: 22.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 330.44 ms. Allocated memory is still 52.4 MB. Free memory was 28.9 MB in the beginning and 34.5 MB in the end (delta: -5.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 63.17 ms. Allocated memory is still 52.4 MB. Free memory was 34.4 MB in the beginning and 32.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.76 ms. Allocated memory is still 52.4 MB. Free memory was 32.9 MB in the beginning and 31.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2680.88 ms. Allocated memory was 52.4 MB in the beginning and 62.9 MB in the end (delta: 10.5 MB). Free memory was 31.1 MB in the beginning and 41.6 MB in the end (delta: -10.5 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 194982.65 ms. Allocated memory is still 62.9 MB. Free memory was 41.0 MB in the beginning and 29.6 MB in the end (delta: 11.4 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.91 ms. Allocated memory is still 62.9 MB. Free memory was 29.5 MB in the beginning and 29.1 MB in the end (delta: 432.6 kB). Peak memory consumption was 2.1 MB. 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: unable to decide satisfiability of path constraint. Possible FailurePath: [L46] double a,r; [L48] a = __VERIFIER_nondet_double() [L14] COND FALSE !(!cond) [L26] double xi, xsi, temp; [L27] signed int cond, exp; [L28] union double_int A_u, xi_u; [L29] A_u.d = A [L30] EXPR A_u.i [L30] exp = (signed int) ((A_u.i & 0x7FF0000000000000) >> 52) - 1023 [L31] xi_u.d = 1 [L32] xi_u.i = (((long long)(1023-exp)) << 52) [L33] EXPR xi_u.d [L33] xi = xi_u.d [L34] cond = 1 [L35] COND TRUE \read(cond) [L36] xsi = 2*xi-A*xi*xi [L37] temp = xsi-xi [L38] cond = ((temp > 1e-10) || (temp < -1e-10)) [L39] xi = xsi [L35] COND FALSE !(\read(cond)) [L41] return xi; [L41] return xi; [L41] return xi; [L51] r = inv(a) [L16] COND TRUE !(cond) [L3] __assert_fail("0", "inv_Newton-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 194.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 0 SDslu, 14 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 296 SizeOfPredicates, 1 NumberOfNonLiveVariables, 112 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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...