./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1031.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_75d5edaf-2756-49b6-aba6-80c4d200e520/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c -s /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/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 2c4d19baf0429684b688f90d909ef640d9fb6537 ............................................................................................................................................................................................................................................................................................ 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_75d5edaf-2756-49b6-aba6-80c4d200e520/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c -s /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/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 2c4d19baf0429684b688f90d909ef640d9fb6537 ........................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:17:55,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:17:55,527 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:17:55,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:17:55,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:17:55,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:17:55,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:17:55,620 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:17:55,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:17:55,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:17:55,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:17:55,633 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:17:55,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:17:55,635 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:17:55,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:17:55,637 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:17:55,638 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:17:55,639 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:17:55,641 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:17:55,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:17:55,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:17:55,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:17:55,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:17:55,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:17:55,676 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:17:55,676 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:17:55,677 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:17:55,678 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:17:55,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:17:55,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:17:55,680 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:17:55,681 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:17:55,682 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:17:55,683 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:17:55,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:17:55,685 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:17:55,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:17:55,686 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:17:55,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:17:55,692 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:17:55,693 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:17:55,696 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:17:55,740 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:17:55,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:17:55,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:17:55,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:17:55,742 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:17:55,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:17:55,743 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:17:55,743 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:17:55,743 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:17:55,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:17:55,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:17:55,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:17:55,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:17:55,745 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:17:55,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:17:55,745 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:17:55,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:17:55,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:17:55,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:17:55,746 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:17:55,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:17:55,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:17:55,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:17:55,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:17:55,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:17:55,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:17:55,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:17:55,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:17:55,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:17:55,748 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_75d5edaf-2756-49b6-aba6-80c4d200e520/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c4d19baf0429684b688f90d909ef640d9fb6537 [2020-11-28 03:17:56,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:17:56,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:17:56,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:17:56,076 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:17:56,077 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:17:56,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2020-11-28 03:17:56,194 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/bin/uautomizer/data/fee6f23b0/c2361a3b0bbf40239d9a849976eb0254/FLAG6d3507f15 [2020-11-28 03:17:56,714 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:17:56,715 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2020-11-28 03:17:56,722 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/bin/uautomizer/data/fee6f23b0/c2361a3b0bbf40239d9a849976eb0254/FLAG6d3507f15 [2020-11-28 03:17:57,078 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/bin/uautomizer/data/fee6f23b0/c2361a3b0bbf40239d9a849976eb0254 [2020-11-28 03:17:57,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:17:57,083 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:17:57,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:17:57,085 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:17:57,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:17:57,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:17:57" (1/1) ... [2020-11-28 03:17:57,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f636e4f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57, skipping insertion in model container [2020-11-28 03:17:57,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:17:57" (1/1) ... [2020-11-28 03:17:57,102 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:17:57,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:17:57,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:17:57,379 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:17:57,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:17:57,455 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:17:57,455 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57 WrapperNode [2020-11-28 03:17:57,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:17:57,457 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:17:57,457 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:17:57,457 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:17:57,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57" (1/1) ... [2020-11-28 03:17:57,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57" (1/1) ... [2020-11-28 03:17:57,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:17:57,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:17:57,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:17:57,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:17:57,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57" (1/1) ... [2020-11-28 03:17:57,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57" (1/1) ... [2020-11-28 03:17:57,527 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57" (1/1) ... [2020-11-28 03:17:57,528 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57" (1/1) ... [2020-11-28 03:17:57,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57" (1/1) ... [2020-11-28 03:17:57,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57" (1/1) ... [2020-11-28 03:17:57,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57" (1/1) ... [2020-11-28 03:17:57,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:17:57,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:17:57,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:17:57,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:17:57,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/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 03:17:57,639 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:17:57,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:17:57,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-28 03:17:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:17:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 03:17:57,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:17:57,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:17:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:17:57,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:17:58,051 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:17:58,051 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-28 03:17:58,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:58 BoogieIcfgContainer [2020-11-28 03:17:58,060 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:17:58,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:17:58,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:17:58,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:17:58,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:17:57" (1/3) ... [2020-11-28 03:17:58,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27381855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:17:58, skipping insertion in model container [2020-11-28 03:17:58,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:17:57" (2/3) ... [2020-11-28 03:17:58,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27381855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:17:58, skipping insertion in model container [2020-11-28 03:17:58,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:58" (3/3) ... [2020-11-28 03:17:58,070 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2020-11-28 03:17:58,082 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:17:58,087 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:17:58,099 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:17:58,123 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:17:58,124 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:17:58,124 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:17:58,124 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:17:58,124 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:17:58,124 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:17:58,125 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:17:58,125 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:17:58,138 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-11-28 03:17:58,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:17:58,143 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:58,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:58,145 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:17:58,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:58,150 INFO L82 PathProgramCache]: Analyzing trace with hash 2068161395, now seen corresponding path program 1 times [2020-11-28 03:17:58,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:58,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106037183] [2020-11-28 03:17:58,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:58,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:17:58,275 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 03:17:58,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106037183] [2020-11-28 03:17:58,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:17:58,276 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:17:58,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618371718] [2020-11-28 03:17:58,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:17:58,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:17:58,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:17:58,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:17:58,297 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-11-28 03:17:58,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:17:58,314 INFO L93 Difference]: Finished difference Result 51 states and 75 transitions. [2020-11-28 03:17:58,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:17:58,315 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-28 03:17:58,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:17:58,324 INFO L225 Difference]: With dead ends: 51 [2020-11-28 03:17:58,324 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 03:17:58,327 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 03:17:58,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 03:17:58,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-28 03:17:58,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 03:17:58,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2020-11-28 03:17:58,360 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 11 [2020-11-28 03:17:58,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:17:58,360 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2020-11-28 03:17:58,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:17:58,360 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2020-11-28 03:17:58,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:17:58,361 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:17:58,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:17:58,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:17:58,362 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:17:58,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:17:58,363 INFO L82 PathProgramCache]: Analyzing trace with hash -1606884976, now seen corresponding path program 1 times [2020-11-28 03:17:58,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:17:58,363 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537118084] [2020-11-28 03:17:58,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:17:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:58,442 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:58,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:17:58,495 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:17:58,535 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:17:58,535 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:17:58,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:17:58,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:17:58 BoogieIcfgContainer [2020-11-28 03:17:58,565 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:17:58,566 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:17:58,566 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:17:58,567 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:17:58,567 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:17:58" (3/4) ... [2020-11-28 03:17:58,571 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:17:58,571 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:17:58,573 INFO L168 Benchmark]: Toolchain (without parser) took 1488.73 ms. Allocated memory is still 123.7 MB. Free memory was 88.9 MB in the beginning and 51.7 MB in the end (delta: 37.2 MB). Peak memory consumption was 34.6 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:58,574 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 77.6 MB. Free memory is still 35.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:17:58,575 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.89 ms. Allocated memory is still 123.7 MB. Free memory was 88.7 MB in the beginning and 96.4 MB in the end (delta: -7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:58,575 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.51 ms. Allocated memory is still 123.7 MB. Free memory was 96.4 MB in the beginning and 95.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:17:58,576 INFO L168 Benchmark]: Boogie Preprocessor took 54.34 ms. Allocated memory is still 123.7 MB. Free memory was 95.1 MB in the beginning and 93.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:58,577 INFO L168 Benchmark]: RCFGBuilder took 504.33 ms. Allocated memory is still 123.7 MB. Free memory was 93.6 MB in the beginning and 75.5 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:58,578 INFO L168 Benchmark]: TraceAbstraction took 503.52 ms. Allocated memory is still 123.7 MB. Free memory was 74.8 MB in the beginning and 52.4 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:17:58,579 INFO L168 Benchmark]: Witness Printer took 4.84 ms. Allocated memory is still 123.7 MB. Free memory was 52.4 MB in the beginning and 51.7 MB in the end (delta: 651.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:17:58,583 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 77.6 MB. Free memory is still 35.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 370.89 ms. Allocated memory is still 123.7 MB. Free memory was 88.7 MB in the beginning and 96.4 MB in the end (delta: -7.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.51 ms. Allocated memory is still 123.7 MB. Free memory was 96.4 MB in the beginning and 95.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 54.34 ms. Allocated memory is still 123.7 MB. Free memory was 95.1 MB in the beginning and 93.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 504.33 ms. Allocated memory is still 123.7 MB. Free memory was 93.6 MB in the beginning and 75.5 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 503.52 ms. Allocated memory is still 123.7 MB. Free memory was 74.8 MB in the beginning and 52.4 MB in the end (delta: 22.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Witness Printer took 4.84 ms. Allocated memory is still 123.7 MB. Free memory was 52.4 MB in the beginning and 51.7 MB in the end (delta: 651.8 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 36, overapproximation of someBinaryArithmeticDOUBLEoperation at line 76, overapproximation of bitwiseAnd at line 37, overapproximation of someBinaryDOUBLEComparisonOperation at line 17. Possible FailurePath: [L76] double x = 0.0 / 0.0; [L20] __int32_t msw, exponent_less_1023; [L21] __uint32_t lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L29] COND TRUE exponent_less_1023 < 20 [L30] COND FALSE !(exponent_less_1023 < 0) [L36] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L37] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L38] return x; [L77] double res = round_double(x); [L17] return x != x; [L80] COND TRUE !isnan_double(res) [L3] __assert_fail("0", "double_req_bl_1031.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 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=27occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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 03:18:01,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:18:01,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:18:01,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:18:01,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:18:01,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:18:01,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:18:01,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:18:01,179 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:18:01,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:18:01,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:18:01,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:18:01,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:18:01,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:18:01,196 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:18:01,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:18:01,200 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:18:01,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:18:01,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:18:01,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:18:01,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:18:01,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:18:01,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:18:01,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:18:01,230 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:18:01,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:18:01,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:18:01,237 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:18:01,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:18:01,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:18:01,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:18:01,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:18:01,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:18:01,246 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:18:01,247 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:18:01,247 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:18:01,248 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:18:01,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:18:01,249 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:18:01,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:18:01,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:18:01,252 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-11-28 03:18:01,302 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:18:01,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:18:01,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:18:01,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:18:01,306 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:18:01,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:18:01,307 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:18:01,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:18:01,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:18:01,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:18:01,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:18:01,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:18:01,309 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 03:18:01,309 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 03:18:01,310 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:18:01,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:18:01,310 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:18:01,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:18:01,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:18:01,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:18:01,311 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:18:01,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:18:01,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:18:01,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:18:01,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:18:01,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:18:01,313 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-11-28 03:18:01,313 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 03:18:01,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:18:01,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:18:01,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 03:18:01,314 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_75d5edaf-2756-49b6-aba6-80c4d200e520/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c4d19baf0429684b688f90d909ef640d9fb6537 [2020-11-28 03:18:01,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:18:01,703 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:18:01,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:18:01,707 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:18:01,711 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:18:01,712 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/bin/uautomizer/../../sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2020-11-28 03:18:01,803 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/bin/uautomizer/data/479e9bcce/b772db38b9004d22aad800b559695a92/FLAG4701de2fb [2020-11-28 03:18:02,392 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:18:02,396 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/sv-benchmarks/c/float-newlib/double_req_bl_1031.c [2020-11-28 03:18:02,405 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/bin/uautomizer/data/479e9bcce/b772db38b9004d22aad800b559695a92/FLAG4701de2fb [2020-11-28 03:18:02,752 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/bin/uautomizer/data/479e9bcce/b772db38b9004d22aad800b559695a92 [2020-11-28 03:18:02,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:18:02,757 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:18:02,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:18:02,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:18:02,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:18:02,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:18:02" (1/1) ... [2020-11-28 03:18:02,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b075ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:02, skipping insertion in model container [2020-11-28 03:18:02,771 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:18:02" (1/1) ... [2020-11-28 03:18:02,781 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:18:02,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:18:02,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:18:02,996 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:18:03,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:18:03,096 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:18:03,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:03 WrapperNode [2020-11-28 03:18:03,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:18:03,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:18:03,099 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:18:03,099 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:18:03,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:03" (1/1) ... [2020-11-28 03:18:03,120 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:03" (1/1) ... [2020-11-28 03:18:03,144 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:18:03,145 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:18:03,145 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:18:03,145 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:18:03,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:03" (1/1) ... [2020-11-28 03:18:03,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:03" (1/1) ... [2020-11-28 03:18:03,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:03" (1/1) ... [2020-11-28 03:18:03,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:03" (1/1) ... [2020-11-28 03:18:03,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:03" (1/1) ... [2020-11-28 03:18:03,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:03" (1/1) ... [2020-11-28 03:18:03,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:03" (1/1) ... [2020-11-28 03:18:03,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:18:03,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:18:03,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:18:03,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:18:03,185 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/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 03:18:03,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2020-11-28 03:18:03,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-28 03:18:03,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 03:18:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:18:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 03:18:03,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:18:03,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:18:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-11-28 03:18:03,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:18:03,999 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:18:03,999 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-28 03:18:04,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:04 BoogieIcfgContainer [2020-11-28 03:18:04,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:18:04,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:18:04,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:18:04,007 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:18:04,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:18:02" (1/3) ... [2020-11-28 03:18:04,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6680aeda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:18:04, skipping insertion in model container [2020-11-28 03:18:04,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:03" (2/3) ... [2020-11-28 03:18:04,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6680aeda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:18:04, skipping insertion in model container [2020-11-28 03:18:04,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:04" (3/3) ... [2020-11-28 03:18:04,011 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2020-11-28 03:18:04,023 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:18:04,028 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:18:04,040 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:18:04,070 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:18:04,070 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:18:04,070 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:18:04,071 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:18:04,071 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:18:04,071 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:18:04,071 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:18:04,071 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:18:04,084 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-11-28 03:18:04,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:18:04,090 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:04,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:04,091 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:04,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:04,097 INFO L82 PathProgramCache]: Analyzing trace with hash 2068161395, now seen corresponding path program 1 times [2020-11-28 03:18:04,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:18:04,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [884193554] [2020-11-28 03:18:04,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/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 03:18:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:04,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 03:18:04,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:04,290 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 03:18:04,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:18:04,298 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 03:18:04,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [884193554] [2020-11-28 03:18:04,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:04,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 03:18:04,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497711293] [2020-11-28 03:18:04,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:18:04,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:18:04,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:18:04,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:18:04,341 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2020-11-28 03:18:04,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:04,360 INFO L93 Difference]: Finished difference Result 51 states and 75 transitions. [2020-11-28 03:18:04,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:18:04,362 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-28 03:18:04,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:04,373 INFO L225 Difference]: With dead ends: 51 [2020-11-28 03:18:04,374 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 03:18:04,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:18:04,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 03:18:04,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-28 03:18:04,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 03:18:04,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2020-11-28 03:18:04,414 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 30 transitions. Word has length 11 [2020-11-28 03:18:04,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:04,415 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 30 transitions. [2020-11-28 03:18:04,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:18:04,415 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 30 transitions. [2020-11-28 03:18:04,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-28 03:18:04,416 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:04,416 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:04,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 03:18:04,630 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:04,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:04,631 INFO L82 PathProgramCache]: Analyzing trace with hash -1606884976, now seen corresponding path program 1 times [2020-11-28 03:18:04,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:18:04,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687252778] [2020-11-28 03:18:04,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/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 03:18:04,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:04,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:18:04,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:04,908 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 03:18:04,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:18:05,025 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 03:18:05,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687252778] [2020-11-28 03:18:05,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:05,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-28 03:18:05,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349751426] [2020-11-28 03:18:05,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:18:05,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:18:05,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:18:05,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:18:05,030 INFO L87 Difference]: Start difference. First operand 23 states and 30 transitions. Second operand 10 states. [2020-11-28 03:18:05,711 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 12 [2020-11-28 03:18:05,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:05,797 INFO L93 Difference]: Finished difference Result 28 states and 34 transitions. [2020-11-28 03:18:05,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:18:05,799 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 12 [2020-11-28 03:18:05,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:05,800 INFO L225 Difference]: With dead ends: 28 [2020-11-28 03:18:05,800 INFO L226 Difference]: Without dead ends: 22 [2020-11-28 03:18:05,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:18:05,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-28 03:18:05,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-28 03:18:05,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 03:18:05,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2020-11-28 03:18:05,805 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2020-11-28 03:18:05,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:05,806 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2020-11-28 03:18:05,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:18:05,806 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2020-11-28 03:18:05,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:18:05,809 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:18:05,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:18:06,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 03:18:06,011 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:18:06,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:18:06,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1251020519, now seen corresponding path program 1 times [2020-11-28 03:18:06,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-11-28 03:18:06,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1304254693] [2020-11-28 03:18:06,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/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 03:18:06,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:18:06,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:18:06,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:18:06,282 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 03:18:06,282 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 03:18:06,479 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 03:18:06,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1304254693] [2020-11-28 03:18:06,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:18:06,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-28 03:18:06,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887546772] [2020-11-28 03:18:06,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:18:06,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-11-28 03:18:06,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:18:06,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:18:06,482 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 8 states. [2020-11-28 03:18:06,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:18:06,704 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-11-28 03:18:06,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:18:06,719 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-11-28 03:18:06,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:18:06,720 INFO L225 Difference]: With dead ends: 22 [2020-11-28 03:18:06,720 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:18:06,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:18:06,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:18:06,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:18:06,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:18:06,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:18:06,721 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-11-28 03:18:06,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:18:06,722 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:18:06,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:18:06,722 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:18:06,722 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:18:06,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 03:18:06,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:18:07,009 INFO L277 CegarLoopResult]: At program point L85(lines 68 86) the Hoare annotation is: true [2020-11-28 03:18:07,009 INFO L274 CegarLoopResult]: For program point L44(lines 44 47) no Hoare annotation was computed. [2020-11-28 03:18:07,010 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 03:18:07,010 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-28 03:18:07,010 INFO L270 CegarLoopResult]: At program point L65(lines 19 66) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_round_double_~x ULTIMATE.start_round_double_~x)) (not (fp.eq |ULTIMATE.start_round_double_#res| |ULTIMATE.start_round_double_#res|))) [2020-11-28 03:18:07,010 INFO L274 CegarLoopResult]: For program point L32(lines 32 33) no Hoare annotation was computed. [2020-11-28 03:18:07,010 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:18:07,010 INFO L274 CegarLoopResult]: For program point L32-2(lines 32 33) no Hoare annotation was computed. [2020-11-28 03:18:07,010 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:18:07,011 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:18:07,011 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 03:18:07,011 INFO L274 CegarLoopResult]: For program point L37(lines 37 38) no Hoare annotation was computed. [2020-11-28 03:18:07,011 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:18:07,011 INFO L274 CegarLoopResult]: For program point L29(lines 29 58) no Hoare annotation was computed. [2020-11-28 03:18:07,011 INFO L274 CegarLoopResult]: For program point L54(lines 54 55) no Hoare annotation was computed. [2020-11-28 03:18:07,011 INFO L274 CegarLoopResult]: For program point L54-2(lines 54 55) no Hoare annotation was computed. [2020-11-28 03:18:07,012 INFO L270 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_round_double_~x ULTIMATE.start_round_double_~x)) (not (fp.eq |ULTIMATE.start_round_double_#res| |ULTIMATE.start_round_double_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_double_#res|)) [2020-11-28 03:18:07,012 INFO L274 CegarLoopResult]: For program point L30(lines 30 42) no Hoare annotation was computed. [2020-11-28 03:18:07,012 INFO L274 CegarLoopResult]: For program point L59(lines 59 64) no Hoare annotation was computed. [2020-11-28 03:18:07,012 INFO L274 CegarLoopResult]: For program point L59-1(lines 19 66) no Hoare annotation was computed. [2020-11-28 03:18:07,012 INFO L274 CegarLoopResult]: For program point L59-2(lines 59 64) no Hoare annotation was computed. [2020-11-28 03:18:07,012 INFO L274 CegarLoopResult]: For program point L22-1(lines 22 27) no Hoare annotation was computed. [2020-11-28 03:18:07,012 INFO L270 CegarLoopResult]: At program point L22-2(lines 22 27) the Hoare annotation is: (not (fp.eq ULTIMATE.start_round_double_~x ULTIMATE.start_round_double_~x)) [2020-11-28 03:18:07,013 INFO L274 CegarLoopResult]: For program point L22-3(lines 22 27) no Hoare annotation was computed. [2020-11-28 03:18:07,013 INFO L274 CegarLoopResult]: For program point L51(lines 51 52) no Hoare annotation was computed. [2020-11-28 03:18:07,013 INFO L274 CegarLoopResult]: For program point L80(lines 80 83) no Hoare annotation was computed. [2020-11-28 03:18:07,013 INFO L274 CegarLoopResult]: For program point L43(lines 43 58) no Hoare annotation was computed. [2020-11-28 03:18:07,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:18:07 BoogieIcfgContainer [2020-11-28 03:18:07,029 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:18:07,030 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:18:07,030 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:18:07,030 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:18:07,031 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:04" (3/4) ... [2020-11-28 03:18:07,034 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:18:07,046 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-28 03:18:07,047 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-28 03:18:07,047 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 03:18:07,047 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:18:07,074 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(\result, \result) [2020-11-28 03:18:07,074 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(\result, \result)) && 1bv32 == \result [2020-11-28 03:18:07,098 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_75d5edaf-2756-49b6-aba6-80c4d200e520/bin/uautomizer/witness.graphml [2020-11-28 03:18:07,098 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:18:07,099 INFO L168 Benchmark]: Toolchain (without parser) took 4342.24 ms. Allocated memory was 48.2 MB in the beginning and 71.3 MB in the end (delta: 23.1 MB). Free memory was 24.4 MB in the beginning and 36.0 MB in the end (delta: -11.7 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:07,100 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 48.2 MB. Free memory was 30.5 MB in the beginning and 30.5 MB in the end (delta: 31.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:18:07,101 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.77 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.2 MB in the beginning and 41.2 MB in the end (delta: -17.0 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:07,101 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.87 ms. Allocated memory is still 58.7 MB. Free memory was 41.2 MB in the beginning and 39.5 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:18:07,102 INFO L168 Benchmark]: Boogie Preprocessor took 38.44 ms. Allocated memory is still 58.7 MB. Free memory was 39.5 MB in the beginning and 38.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:07,102 INFO L168 Benchmark]: RCFGBuilder took 817.51 ms. Allocated memory is still 58.7 MB. Free memory was 37.8 MB in the beginning and 30.8 MB in the end (delta: 7.0 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:07,103 INFO L168 Benchmark]: TraceAbstraction took 3025.94 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 30.6 MB in the beginning and 39.4 MB in the end (delta: -8.8 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:07,104 INFO L168 Benchmark]: Witness Printer took 68.34 ms. Allocated memory is still 71.3 MB. Free memory was 39.0 MB in the beginning and 36.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:18:07,107 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 48.2 MB. Free memory was 30.5 MB in the beginning and 30.5 MB in the end (delta: 31.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 338.77 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 24.2 MB in the beginning and 41.2 MB in the end (delta: -17.0 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.87 ms. Allocated memory is still 58.7 MB. Free memory was 41.2 MB in the beginning and 39.5 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 38.44 ms. Allocated memory is still 58.7 MB. Free memory was 39.5 MB in the beginning and 38.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 817.51 ms. Allocated memory is still 58.7 MB. Free memory was 37.8 MB in the beginning and 30.8 MB in the end (delta: 7.0 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3025.94 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 30.6 MB in the beginning and 39.4 MB in the end (delta: -8.8 MB). Peak memory consumption was 3.5 MB. Max. memory is 16.1 GB. * Witness Printer took 68.34 ms. Allocated memory is still 71.3 MB. Free memory was 39.0 MB in the beginning and 36.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 68]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(\result, \result) - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (!~fp.eq~DOUBLE(x, x) && !~fp.eq~DOUBLE(\result, \result)) && 1bv32 == \result - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: !~fp.eq~DOUBLE(x, x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 59 SDtfs, 28 SDslu, 124 SDs, 0 SdLazy, 54 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 26 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 70 ConstructedInterpolants, 12 QuantifiedInterpolants, 3121 SizeOfPredicates, 18 NumberOfNonLiveVariables, 155 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...