./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1032d.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_fc2562c0-2c95-44be-b962-5ed2c926a6ec/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/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 875e041813cc52e2b4711be1a316a97bbafa7756 ...................................................................................................................................................................................................................................................................................................... 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_fc2562c0-2c95-44be-b962-5ed2c926a6ec/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c -s /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/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 875e041813cc52e2b4711be1a316a97bbafa7756 .............................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:21:34,966 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:21:34,990 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:21:35,043 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:21:35,043 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:21:35,045 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:21:35,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:21:35,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:21:35,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:21:35,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:21:35,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:21:35,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:21:35,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:21:35,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:21:35,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:21:35,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:21:35,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:21:35,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:21:35,064 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:21:35,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:21:35,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:21:35,070 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:21:35,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:21:35,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:21:35,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:21:35,077 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:21:35,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:21:35,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:21:35,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:21:35,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:21:35,081 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:21:35,082 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:21:35,083 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:21:35,084 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:21:35,085 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:21:35,086 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:21:35,087 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:21:35,087 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:21:35,088 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:21:35,089 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:21:35,090 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:21:35,091 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:21:35,117 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:21:35,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:21:35,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:21:35,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:21:35,123 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:21:35,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:21:35,124 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:21:35,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:21:35,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:21:35,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:21:35,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:21:35,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:21:35,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:21:35,126 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:21:35,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:21:35,127 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:21:35,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:21:35,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:21:35,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:21:35,128 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:21:35,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:21:35,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:21:35,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:21:35,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:21:35,129 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:21:35,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:21:35,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:21:35,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:21:35,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:21:35,130 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_fc2562c0-2c95-44be-b962-5ed2c926a6ec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 875e041813cc52e2b4711be1a316a97bbafa7756 [2020-11-28 03:21:35,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:21:35,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:21:35,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:21:35,420 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:21:35,421 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:21:35,422 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2020-11-28 03:21:35,501 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/bin/uautomizer/data/302237c74/cc05e1a1828d482d9dc4f9c3a9be7d93/FLAG0f442c4a3 [2020-11-28 03:21:36,038 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:21:36,039 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2020-11-28 03:21:36,045 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/bin/uautomizer/data/302237c74/cc05e1a1828d482d9dc4f9c3a9be7d93/FLAG0f442c4a3 [2020-11-28 03:21:36,403 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/bin/uautomizer/data/302237c74/cc05e1a1828d482d9dc4f9c3a9be7d93 [2020-11-28 03:21:36,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:21:36,407 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:21:36,409 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:21:36,409 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:21:36,412 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:21:36,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:21:36" (1/1) ... [2020-11-28 03:21:36,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@465529bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:36, skipping insertion in model container [2020-11-28 03:21:36,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:21:36" (1/1) ... [2020-11-28 03:21:36,423 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:21:36,442 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:21:36,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:21:36,696 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:21:36,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:21:36,782 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:21:36,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:36 WrapperNode [2020-11-28 03:21:36,785 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:21:36,787 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:21:36,787 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:21:36,787 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:21:36,795 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:36" (1/1) ... [2020-11-28 03:21:36,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:36" (1/1) ... [2020-11-28 03:21:36,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:21:36,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:21:36,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:21:36,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:21:36,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:36" (1/1) ... [2020-11-28 03:21:36,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:36" (1/1) ... [2020-11-28 03:21:36,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:36" (1/1) ... [2020-11-28 03:21:36,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:36" (1/1) ... [2020-11-28 03:21:36,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:36" (1/1) ... [2020-11-28 03:21:36,854 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:36" (1/1) ... [2020-11-28 03:21:36,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:36" (1/1) ... [2020-11-28 03:21:36,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:21:36,861 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:21:36,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:21:36,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:21:36,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/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 [2020-11-28 03:21:36,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:21:36,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:21:36,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 03:21:36,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:21:36,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 03:21:36,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:21:36,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:21:36,936 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:21:36,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:21:37,429 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:21:37,430 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-28 03:21:37,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:37 BoogieIcfgContainer [2020-11-28 03:21:37,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:21:37,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:21:37,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:21:37,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:21:37,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:21:36" (1/3) ... [2020-11-28 03:21:37,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee1066a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:21:37, skipping insertion in model container [2020-11-28 03:21:37,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:36" (2/3) ... [2020-11-28 03:21:37,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee1066a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:21:37, skipping insertion in model container [2020-11-28 03:21:37,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:37" (3/3) ... [2020-11-28 03:21:37,441 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032d.c [2020-11-28 03:21:37,452 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:21:37,457 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:21:37,469 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:21:37,493 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:21:37,493 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:21:37,494 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:21:37,494 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:21:37,494 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:21:37,494 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:21:37,494 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:21:37,494 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:21:37,512 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-11-28 03:21:37,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:21:37,518 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:37,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:37,519 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:37,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:37,525 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2020-11-28 03:21:37,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:37,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911311164] [2020-11-28 03:21:37,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:37,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:37,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:37,688 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911311164] [2020-11-28 03:21:37,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:37,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:21:37,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562134995] [2020-11-28 03:21:37,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:21:37,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:37,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:21:37,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:21:37,715 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-11-28 03:21:37,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:37,738 INFO L93 Difference]: Finished difference Result 57 states and 85 transitions. [2020-11-28 03:21:37,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:21:37,739 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-28 03:21:37,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:37,749 INFO L225 Difference]: With dead ends: 57 [2020-11-28 03:21:37,749 INFO L226 Difference]: Without dead ends: 26 [2020-11-28 03:21:37,754 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 [2020-11-28 03:21:37,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-28 03:21:37,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-28 03:21:37,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-28 03:21:37,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-11-28 03:21:37,796 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2020-11-28 03:21:37,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:37,796 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-11-28 03:21:37,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:21:37,797 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-11-28 03:21:37,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:21:37,797 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:37,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:37,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:21:37,798 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:37,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:37,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2020-11-28 03:21:37,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:37,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74050152] [2020-11-28 03:21:37,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:37,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:21:37,964 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:21:38,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:21:38,075 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:21:38,120 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:21:38,129 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:21:38,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:21:38,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:21:38 BoogieIcfgContainer [2020-11-28 03:21:38,162 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:21:38,163 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:21:38,163 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:21:38,163 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:21:38,164 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:37" (3/4) ... [2020-11-28 03:21:38,167 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:21:38,167 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:21:38,169 INFO L168 Benchmark]: Toolchain (without parser) took 1760.64 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 58.3 MB in the beginning and 87.4 MB in the end (delta: -29.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:21:38,170 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 75.5 MB. Free memory was 55.0 MB in the beginning and 54.9 MB in the end (delta: 23.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:21:38,170 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.85 ms. Allocated memory is still 92.3 MB. Free memory was 58.0 MB in the beginning and 67.8 MB in the end (delta: -9.9 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:38,171 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.82 ms. Allocated memory is still 92.3 MB. Free memory was 67.8 MB in the beginning and 66.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:38,172 INFO L168 Benchmark]: Boogie Preprocessor took 29.81 ms. Allocated memory is still 92.3 MB. Free memory was 66.0 MB in the beginning and 64.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:38,173 INFO L168 Benchmark]: RCFGBuilder took 571.23 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 64.4 MB in the beginning and 87.1 MB in the end (delta: -22.7 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:38,173 INFO L168 Benchmark]: TraceAbstraction took 728.62 ms. Allocated memory is still 111.1 MB. Free memory was 86.6 MB in the beginning and 87.9 MB in the end (delta: -1.2 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:38,174 INFO L168 Benchmark]: Witness Printer took 4.29 ms. Allocated memory is still 111.1 MB. Free memory was 87.9 MB in the beginning and 87.4 MB in the end (delta: 500.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:21:38,178 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 75.5 MB. Free memory was 55.0 MB in the beginning and 54.9 MB in the end (delta: 23.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 376.85 ms. Allocated memory is still 92.3 MB. Free memory was 58.0 MB in the beginning and 67.8 MB in the end (delta: -9.9 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.82 ms. Allocated memory is still 92.3 MB. Free memory was 67.8 MB in the beginning and 66.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.81 ms. Allocated memory is still 92.3 MB. Free memory was 66.0 MB in the beginning and 64.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 571.23 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 64.4 MB in the beginning and 87.1 MB in the end (delta: -22.7 MB). Peak memory consumption was 21.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 728.62 ms. Allocated memory is still 111.1 MB. Free memory was 86.6 MB in the beginning and 87.9 MB in the end (delta: -1.2 MB). Peak memory consumption was 28.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.29 ms. Allocated memory is still 111.1 MB. Free memory was 87.9 MB in the beginning and 87.4 MB in the end (delta: 500.8 kB). 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 shiftRight at line 33, overapproximation of bitwiseOr at line 75, overapproximation of someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 74. Possible FailurePath: [L88] double x = -1.0 / 0.0; [L17] __int32_t msw, exponent_less_1023; [L18] __uint32_t lsw; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (msw) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (lsw) = ew_u.parts.lsw [L25] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L26] COND TRUE exponent_less_1023 < 20 [L27] COND FALSE !(exponent_less_1023 < 0) [L33] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L34] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L35] return x; [L89] double res = round_double(x); [L67] __int32_t hx, lx; [L69] ieee_double_shape_type ew_u; [L70] ew_u.value = (x) [L71] EXPR ew_u.parts.msw [L71] (hx) = ew_u.parts.msw [L72] EXPR ew_u.parts.lsw [L72] (lx) = ew_u.parts.lsw [L74] hx &= 0x7fffffff [L75] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L76] hx = 0x7ff00000 - hx [L77] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L92] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1032d.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 [2020-11-28 03:21:40,600 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:21:40,604 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:21:40,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:21:40,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:21:40,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:21:40,665 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:21:40,669 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:21:40,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:21:40,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:21:40,689 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:21:40,690 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:21:40,691 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:21:40,692 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:21:40,693 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:21:40,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:21:40,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:21:40,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:21:40,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:21:40,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:21:40,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:21:40,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:21:40,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:21:40,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:21:40,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:21:40,722 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:21:40,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:21:40,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:21:40,726 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:21:40,727 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:21:40,727 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:21:40,728 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:21:40,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:21:40,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:21:40,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:21:40,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:21:40,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:21:40,734 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:21:40,734 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:21:40,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:21:40,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:21:40,737 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-28 03:21:40,778 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:21:40,778 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:21:40,781 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:21:40,782 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:21:40,782 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:21:40,782 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:21:40,782 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:21:40,783 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:21:40,783 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:21:40,783 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:21:40,784 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:21:40,784 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:21:40,785 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 03:21:40,785 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 03:21:40,785 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:21:40,785 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:21:40,785 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:21:40,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:21:40,786 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:21:40,786 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:21:40,786 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:21:40,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:21:40,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:21:40,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:21:40,787 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:21:40,787 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:21:40,788 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 03:21:40,788 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 03:21:40,788 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:21:40,788 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:21:40,789 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 03:21:40,789 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_fc2562c0-2c95-44be-b962-5ed2c926a6ec/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 875e041813cc52e2b4711be1a316a97bbafa7756 [2020-11-28 03:21:41,169 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:21:41,204 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:21:41,206 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:21:41,208 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:21:41,210 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:21:41,211 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2020-11-28 03:21:41,299 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/bin/uautomizer/data/bd4e0d8c8/f0f6e429f8f349bf8ed8fe747d015f10/FLAGbdc2c12c9 [2020-11-28 03:21:41,749 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:21:41,749 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2020-11-28 03:21:41,756 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/bin/uautomizer/data/bd4e0d8c8/f0f6e429f8f349bf8ed8fe747d015f10/FLAGbdc2c12c9 [2020-11-28 03:21:42,162 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/bin/uautomizer/data/bd4e0d8c8/f0f6e429f8f349bf8ed8fe747d015f10 [2020-11-28 03:21:42,167 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:21:42,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:21:42,173 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:21:42,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:21:42,177 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:21:42,178 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:21:42" (1/1) ... [2020-11-28 03:21:42,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e5fc85d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:42, skipping insertion in model container [2020-11-28 03:21:42,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:21:42" (1/1) ... [2020-11-28 03:21:42,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:21:42,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:21:42,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:21:42,409 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:21:42,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:21:42,505 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:21:42,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:42 WrapperNode [2020-11-28 03:21:42,506 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:21:42,507 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:21:42,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:21:42,510 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:21:42,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:42" (1/1) ... [2020-11-28 03:21:42,545 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:42" (1/1) ... [2020-11-28 03:21:42,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:21:42,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:21:42,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:21:42,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:21:42,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:42" (1/1) ... [2020-11-28 03:21:42,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:42" (1/1) ... [2020-11-28 03:21:42,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:42" (1/1) ... [2020-11-28 03:21:42,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:42" (1/1) ... [2020-11-28 03:21:42,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:42" (1/1) ... [2020-11-28 03:21:42,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:42" (1/1) ... [2020-11-28 03:21:42,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:42" (1/1) ... [2020-11-28 03:21:42,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:21:42,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:21:42,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:21:42,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:21:42,602 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/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 [2020-11-28 03:21:42,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-28 03:21:42,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-28 03:21:42,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 03:21:42,663 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:21:42,663 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 03:21:42,663 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:21:42,663 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:21:42,663 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 03:21:42,664 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:21:43,297 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:21:43,301 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-28 03:21:43,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:43 BoogieIcfgContainer [2020-11-28 03:21:43,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:21:43,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:21:43,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:21:43,309 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:21:43,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:21:42" (1/3) ... [2020-11-28 03:21:43,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364705c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:21:43, skipping insertion in model container [2020-11-28 03:21:43,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:42" (2/3) ... [2020-11-28 03:21:43,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364705c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:21:43, skipping insertion in model container [2020-11-28 03:21:43,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:43" (3/3) ... [2020-11-28 03:21:43,313 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032d.c [2020-11-28 03:21:43,324 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:21:43,329 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:21:43,341 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:21:43,369 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:21:43,369 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:21:43,370 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:21:43,370 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:21:43,371 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:21:43,372 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:21:43,372 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:21:43,373 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:21:43,385 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-11-28 03:21:43,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:21:43,391 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:43,392 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:43,392 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:43,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:43,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2020-11-28 03:21:43,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:21:43,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2038452566] [2020-11-28 03:21:43,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/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 [2020-11-28 03:21:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:43,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 03:21:43,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:43,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:43,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:21:43,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:43,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2038452566] [2020-11-28 03:21:43,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:43,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 03:21:43,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283418291] [2020-11-28 03:21:43,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:21:43,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:21:43,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:21:43,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:21:43,611 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-11-28 03:21:43,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:43,628 INFO L93 Difference]: Finished difference Result 57 states and 85 transitions. [2020-11-28 03:21:43,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:21:43,629 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-11-28 03:21:43,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:43,638 INFO L225 Difference]: With dead ends: 57 [2020-11-28 03:21:43,638 INFO L226 Difference]: Without dead ends: 26 [2020-11-28 03:21:43,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:21:43,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-28 03:21:43,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-28 03:21:43,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-28 03:21:43,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-11-28 03:21:43,670 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2020-11-28 03:21:43,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:43,671 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-11-28 03:21:43,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:21:43,671 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-11-28 03:21:43,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:21:43,672 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:43,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:43,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 03:21:43,890 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:43,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:43,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2020-11-28 03:21:43,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:21:43,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [53117593] [2020-11-28 03:21:43,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/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 [2020-11-28 03:21:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:44,043 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:21:44,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:44,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:44,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:21:44,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:44,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [53117593] [2020-11-28 03:21:44,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:44,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-28 03:21:44,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057040847] [2020-11-28 03:21:44,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:21:44,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:21:44,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:21:44,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:21:44,401 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand 8 states. [2020-11-28 03:21:44,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:44,740 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2020-11-28 03:21:44,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:21:44,743 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-28 03:21:44,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:44,753 INFO L225 Difference]: With dead ends: 34 [2020-11-28 03:21:44,754 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 03:21:44,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:21:44,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 03:21:44,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 03:21:44,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 03:21:44,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 15 transitions. [2020-11-28 03:21:44,765 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 15 transitions. Word has length 15 [2020-11-28 03:21:44,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:44,766 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 15 transitions. [2020-11-28 03:21:44,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:21:44,766 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 15 transitions. [2020-11-28 03:21:44,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:21:44,769 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:44,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:44,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 03:21:44,987 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:21:44,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:44,988 INFO L82 PathProgramCache]: Analyzing trace with hash 709099857, now seen corresponding path program 1 times [2020-11-28 03:21:44,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:21:44,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686594621] [2020-11-28 03:21:44,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/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 [2020-11-28 03:21:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:21:45,216 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:21:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:21:45,380 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:21:45,440 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-11-28 03:21:45,440 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:21:45,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 03:21:45,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:21:45 BoogieIcfgContainer [2020-11-28 03:21:45,664 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:21:45,664 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:21:45,664 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:21:45,664 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:21:45,665 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:43" (3/4) ... [2020-11-28 03:21:45,666 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:21:45,707 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_fc2562c0-2c95-44be-b962-5ed2c926a6ec/bin/uautomizer/witness.graphml [2020-11-28 03:21:45,708 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:21:45,710 INFO L168 Benchmark]: Toolchain (without parser) took 3539.03 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 28.9 MB in the beginning and 27.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 14.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:45,710 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 52.4 MB. Free memory was 34.2 MB in the beginning and 34.1 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:21:45,711 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.35 ms. Allocated memory is still 52.4 MB. Free memory was 28.6 MB in the beginning and 33.7 MB in the end (delta: -5.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:45,712 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.60 ms. Allocated memory is still 52.4 MB. Free memory was 33.7 MB in the beginning and 31.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:45,712 INFO L168 Benchmark]: Boogie Preprocessor took 34.88 ms. Allocated memory is still 52.4 MB. Free memory was 31.9 MB in the beginning and 30.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:21:45,713 INFO L168 Benchmark]: RCFGBuilder took 702.68 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 30.1 MB in the beginning and 37.5 MB in the end (delta: -7.4 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:45,714 INFO L168 Benchmark]: TraceAbstraction took 2358.05 ms. Allocated memory is still 65.0 MB. Free memory was 37.0 MB in the beginning and 29.1 MB in the end (delta: 7.9 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:45,714 INFO L168 Benchmark]: Witness Printer took 43.88 ms. Allocated memory is still 65.0 MB. Free memory was 29.1 MB in the beginning and 27.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:45,718 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 52.4 MB. Free memory was 34.2 MB in the beginning and 34.1 MB in the end (delta: 38.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 333.35 ms. Allocated memory is still 52.4 MB. Free memory was 28.6 MB in the beginning and 33.7 MB in the end (delta: -5.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 57.60 ms. Allocated memory is still 52.4 MB. Free memory was 33.7 MB in the beginning and 31.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.88 ms. Allocated memory is still 52.4 MB. Free memory was 31.9 MB in the beginning and 30.3 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 702.68 ms. Allocated memory was 52.4 MB in the beginning and 65.0 MB in the end (delta: 12.6 MB). Free memory was 30.1 MB in the beginning and 37.5 MB in the end (delta: -7.4 MB). Peak memory consumption was 16.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2358.05 ms. Allocated memory is still 65.0 MB. Free memory was 37.0 MB in the beginning and 29.1 MB in the end (delta: 7.9 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Witness Printer took 43.88 ms. Allocated memory is still 65.0 MB. Free memory was 29.1 MB in the beginning and 27.1 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L88] double x = -1.0 / 0.0; [L17] __int32_t msw, exponent_less_1023; [L18] __uint32_t lsw; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (msw) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (lsw) = ew_u.parts.lsw [L25] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L26] COND FALSE !(exponent_less_1023 < 20) [L40] COND TRUE exponent_less_1023 > 51 [L41] COND TRUE exponent_less_1023 == 1024 [L42] return x + x; [L89] double res = round_double(x); [L67] __int32_t hx, lx; [L69] ieee_double_shape_type ew_u; [L70] ew_u.value = (x) [L71] EXPR ew_u.parts.msw [L71] (hx) = ew_u.parts.msw [L72] EXPR ew_u.parts.lsw [L72] (lx) = ew_u.parts.lsw [L74] hx &= 0x7fffffff [L75] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L76] hx = 0x7ff00000 - hx [L77] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L92] COND TRUE !isinf_double(res) [L3] __assert_fail("0", "double_req_bl_1032d.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 44 SDslu, 6 SDs, 0 SdLazy, 9 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 0.3s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 52 ConstructedInterpolants, 5 QuantifiedInterpolants, 2332 SizeOfPredicates, 8 NumberOfNonLiveVariables, 110 ConjunctsInSsa, 9 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 proved your program to be incorrect! Received shutdown request...