./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.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_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7498db39da300a600c956afc9ee769ef7c520660 ...................................................................................................................................................................................................................................................................................................... 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_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7498db39da300a600c956afc9ee769ef7c520660 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 07:27:49,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:27:49,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:27:49,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:27:49,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:27:49,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:27:49,607 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:27:49,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:27:49,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:27:49,622 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:27:49,623 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:27:49,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:27:49,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:27:49,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:27:49,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:27:49,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:27:49,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:27:49,637 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:27:49,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:27:49,647 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:27:49,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:27:49,651 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:27:49,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:27:49,654 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:27:49,663 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:27:49,663 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:27:49,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:27:49,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:27:49,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:27:49,668 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:27:49,668 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:27:49,669 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:27:49,671 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:27:49,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:27:49,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:27:49,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:27:49,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:27:49,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:27:49,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:27:49,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:27:49,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:27:49,680 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:27:49,726 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:27:49,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:27:49,728 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:27:49,728 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:27:49,728 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:27:49,729 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:27:49,729 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:27:49,729 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:27:49,729 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:27:49,730 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:27:49,731 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:27:49,731 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:27:49,731 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:27:49,731 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:27:49,732 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:27:49,732 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:27:49,733 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:27:49,733 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:27:49,733 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:27:49,733 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:27:49,734 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:27:49,734 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:27:49,734 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:27:49,734 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:27:49,735 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:27:49,735 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:27:49,735 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:27:49,735 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:27:49,736 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:27:49,737 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:27:49,737 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:27:49,738 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:27:49,738 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:27:49,738 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:27:49,738 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:27:49,739 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:27:49,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:27:49,739 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:27:49,739 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:27:49,740 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:27:49,740 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7498db39da300a600c956afc9ee769ef7c520660 [2020-11-28 07:27:50,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:27:50,034 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:27:50,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:27:50,040 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:27:50,040 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:27:50,041 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2020-11-28 07:27:50,167 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/data/6f5d402ab/e390620c3ef94ef494586b74af4756f7/FLAGbbff6b887 [2020-11-28 07:27:50,626 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:27:50,627 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2020-11-28 07:27:50,633 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/data/6f5d402ab/e390620c3ef94ef494586b74af4756f7/FLAGbbff6b887 [2020-11-28 07:27:51,024 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/data/6f5d402ab/e390620c3ef94ef494586b74af4756f7 [2020-11-28 07:27:51,026 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:27:51,027 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:27:51,038 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:27:51,039 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:27:51,042 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:27:51,043 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:27:51" (1/1) ... [2020-11-28 07:27:51,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65c5e3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:51, skipping insertion in model container [2020-11-28 07:27:51,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:27:51" (1/1) ... [2020-11-28 07:27:51,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:27:51,068 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:27:51,272 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:27:51,281 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:27:51,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:27:51,321 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:27:51,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:51 WrapperNode [2020-11-28 07:27:51,322 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:27:51,323 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:27:51,323 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:27:51,323 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:27:51,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:51" (1/1) ... [2020-11-28 07:27:51,340 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:51" (1/1) ... [2020-11-28 07:27:51,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:27:51,382 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:27:51,383 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:27:51,383 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:27:51,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:51" (1/1) ... [2020-11-28 07:27:51,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:51" (1/1) ... [2020-11-28 07:27:51,400 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:51" (1/1) ... [2020-11-28 07:27:51,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:51" (1/1) ... [2020-11-28 07:27:51,420 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:51" (1/1) ... [2020-11-28 07:27:51,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:51" (1/1) ... [2020-11-28 07:27:51,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:51" (1/1) ... [2020-11-28 07:27:51,444 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:27:51,448 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:27:51,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:27:51,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:27:51,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/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 07:27:51,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:27:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:27:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 07:27:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:27:51,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:27:51,529 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:27:51,530 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:27:52,390 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:27:52,390 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-28 07:27:52,393 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:52 BoogieIcfgContainer [2020-11-28 07:27:52,393 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:27:52,415 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:27:52,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:27:52,433 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:27:52,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:27:51" (1/3) ... [2020-11-28 07:27:52,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e6f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:27:52, skipping insertion in model container [2020-11-28 07:27:52,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:51" (2/3) ... [2020-11-28 07:27:52,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73e6f69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:27:52, skipping insertion in model container [2020-11-28 07:27:52,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:52" (3/3) ... [2020-11-28 07:27:52,437 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2020-11-28 07:27:52,463 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:27:52,468 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:27:52,505 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:27:52,539 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:27:52,539 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:27:52,540 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:27:52,540 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:27:52,540 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:27:52,540 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:27:52,540 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:27:52,540 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:27:52,554 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-28 07:27:52,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:27:52,559 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:52,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:27:52,561 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:27:52,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:52,567 INFO L82 PathProgramCache]: Analyzing trace with hash 40951417, now seen corresponding path program 1 times [2020-11-28 07:27:52,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:27:52,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804164449] [2020-11-28 07:27:52,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:27:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:52,711 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 07:27:52,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804164449] [2020-11-28 07:27:52,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:52,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:27:52,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551872369] [2020-11-28 07:27:52,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:27:52,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:27:52,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:27:52,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:27:52,738 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-28 07:27:52,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:52,757 INFO L93 Difference]: Finished difference Result 27 states and 37 transitions. [2020-11-28 07:27:52,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:27:52,758 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-11-28 07:27:52,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:52,768 INFO L225 Difference]: With dead ends: 27 [2020-11-28 07:27:52,769 INFO L226 Difference]: Without dead ends: 12 [2020-11-28 07:27:52,772 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 07:27:52,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-28 07:27:52,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-28 07:27:52,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 07:27:52,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-28 07:27:52,811 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 7 [2020-11-28 07:27:52,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:52,811 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-28 07:27:52,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:27:52,812 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-28 07:27:52,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:27:52,812 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:52,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:27:52,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:27:52,813 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:27:52,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:52,814 INFO L82 PathProgramCache]: Analyzing trace with hash 487400052, now seen corresponding path program 1 times [2020-11-28 07:27:52,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:27:52,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592028913] [2020-11-28 07:27:52,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:27:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:27:52,880 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:27:52,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:27:52,921 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:27:52,943 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:27:52,943 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:27:52,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:27:52,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:27:52 BoogieIcfgContainer [2020-11-28 07:27:52,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:27:52,968 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:27:52,968 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:27:52,968 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:27:52,969 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:52" (3/4) ... [2020-11-28 07:27:52,972 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:27:52,972 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:27:52,974 INFO L168 Benchmark]: Toolchain (without parser) took 1945.35 ms. Allocated memory is still 107.0 MB. Free memory was 75.1 MB in the beginning and 61.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:52,975 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 81.8 MB. Free memory was 52.3 MB in the beginning and 52.2 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:27:52,976 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.06 ms. Allocated memory is still 107.0 MB. Free memory was 74.7 MB in the beginning and 82.9 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:52,976 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.81 ms. Allocated memory is still 107.0 MB. Free memory was 82.9 MB in the beginning and 80.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:52,977 INFO L168 Benchmark]: Boogie Preprocessor took 64.98 ms. Allocated memory is still 107.0 MB. Free memory was 80.8 MB in the beginning and 79.9 MB in the end (delta: 864.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:52,978 INFO L168 Benchmark]: RCFGBuilder took 944.84 ms. Allocated memory is still 107.0 MB. Free memory was 79.3 MB in the beginning and 45.2 MB in the end (delta: 34.1 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:52,979 INFO L168 Benchmark]: TraceAbstraction took 552.44 ms. Allocated memory is still 107.0 MB. Free memory was 83.9 MB in the beginning and 61.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:27:52,979 INFO L168 Benchmark]: Witness Printer took 4.28 ms. Allocated memory is still 107.0 MB. Free memory is still 61.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:27:52,983 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 81.8 MB. Free memory was 52.3 MB in the beginning and 52.2 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 284.06 ms. Allocated memory is still 107.0 MB. Free memory was 74.7 MB in the beginning and 82.9 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.81 ms. Allocated memory is still 107.0 MB. Free memory was 82.9 MB in the beginning and 80.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.98 ms. Allocated memory is still 107.0 MB. Free memory was 80.8 MB in the beginning and 79.9 MB in the end (delta: 864.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 944.84 ms. Allocated memory is still 107.0 MB. Free memory was 79.3 MB in the beginning and 45.2 MB in the end (delta: 34.1 MB). Peak memory consumption was 33.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 552.44 ms. Allocated memory is still 107.0 MB. Free memory was 83.9 MB in the beginning and 61.6 MB in the end (delta: 22.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.28 ms. Allocated memory is still 107.0 MB. Free memory is still 61.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 56, overapproximation of someBinaryArithmeticFLOAToperation at line 62. Possible FailurePath: [L62] float x = 0.0f / 0.0f; [L63] float y = 0.0f / 0.0f; [L22] __uint32_t w; [L25] ieee_float_shape_type gf_u; [L26] gf_u.value = (x) [L27] EXPR gf_u.word [L27] (w) = gf_u.word [L30] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L32-L33] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L35-L36] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L38] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L41] return 0; [L45] COND TRUE __fpclassify_float(x) == 0 [L46] return y; [L64] float res = fmax_float(x, y); [L56] return x != x; [L66] COND TRUE !isnan_float(res) [L3] __assert_fail("0", "float_req_bl_1250.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 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: 14 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=14occurred 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, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 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 07:27:55,747 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:27:55,751 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:27:55,808 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:27:55,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:27:55,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:27:55,817 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:27:55,822 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:27:55,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:27:55,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:27:55,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:27:55,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:27:55,841 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:27:55,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:27:55,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:27:55,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:27:55,852 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:27:55,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:27:55,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:27:55,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:27:55,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:27:55,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:27:55,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:27:55,881 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:27:55,887 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:27:55,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:27:55,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:27:55,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:27:55,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:27:55,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:27:55,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:27:55,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:27:55,899 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:27:55,900 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:27:55,901 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:27:55,901 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:27:55,902 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:27:55,902 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:27:55,903 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:27:55,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:27:55,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:27:55,906 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:27:55,948 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:27:55,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:27:55,951 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:27:55,951 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:27:55,952 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:27:55,952 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:27:55,952 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:27:55,953 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:27:55,953 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:27:55,955 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:27:55,956 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:27:55,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:27:55,956 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:27:55,957 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:27:55,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:27:55,957 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:27:55,957 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:27:55,958 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:27:55,958 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:27:55,958 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:27:55,958 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:27:55,958 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:27:55,959 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:27:55,959 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:27:55,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:27:55,960 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:27:55,960 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:27:55,960 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:27:55,960 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:27:55,967 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:27:55,968 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:27:55,968 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:27:55,968 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:27:55,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:27:55,969 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:27:55,969 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:27:55,970 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_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7498db39da300a600c956afc9ee769ef7c520660 [2020-11-28 07:27:56,392 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:27:56,423 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:27:56,426 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:27:56,428 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:27:56,429 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:27:56,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2020-11-28 07:27:56,506 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/data/fc94f556a/116647072df1448982898eb5703a2334/FLAG802d09ce1 [2020-11-28 07:27:57,092 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:27:57,092 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/sv-benchmarks/c/float-newlib/float_req_bl_1250.c [2020-11-28 07:27:57,102 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/data/fc94f556a/116647072df1448982898eb5703a2334/FLAG802d09ce1 [2020-11-28 07:27:57,422 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/data/fc94f556a/116647072df1448982898eb5703a2334 [2020-11-28 07:27:57,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:27:57,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:27:57,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:27:57,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:27:57,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:27:57,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:27:57" (1/1) ... [2020-11-28 07:27:57,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ff2ae19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:57, skipping insertion in model container [2020-11-28 07:27:57,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:27:57" (1/1) ... [2020-11-28 07:27:57,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:27:57,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:27:57,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:27:57,771 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:27:57,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:27:57,834 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:27:57,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:57 WrapperNode [2020-11-28 07:27:57,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:27:57,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:27:57,836 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:27:57,836 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:27:57,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:57" (1/1) ... [2020-11-28 07:27:57,893 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:57" (1/1) ... [2020-11-28 07:27:57,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:27:57,932 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:27:57,932 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:27:57,932 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:27:57,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:57" (1/1) ... [2020-11-28 07:27:57,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:57" (1/1) ... [2020-11-28 07:27:57,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:57" (1/1) ... [2020-11-28 07:27:57,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:57" (1/1) ... [2020-11-28 07:27:57,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:57" (1/1) ... [2020-11-28 07:27:57,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:57" (1/1) ... [2020-11-28 07:27:57,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:57" (1/1) ... [2020-11-28 07:27:58,001 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:27:58,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:27:58,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:27:58,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:27:58,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/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 07:27:58,094 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:27:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:27:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 07:27:58,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:27:58,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:27:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-28 07:27:58,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:27:58,759 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:27:58,760 INFO L298 CfgBuilder]: Removed 18 assume(true) statements. [2020-11-28 07:27:58,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:58 BoogieIcfgContainer [2020-11-28 07:27:58,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:27:58,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:27:58,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:27:58,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:27:58,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:27:57" (1/3) ... [2020-11-28 07:27:58,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e14c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:27:58, skipping insertion in model container [2020-11-28 07:27:58,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:57" (2/3) ... [2020-11-28 07:27:58,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e14c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:27:58, skipping insertion in model container [2020-11-28 07:27:58,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:58" (3/3) ... [2020-11-28 07:27:58,773 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1250.c [2020-11-28 07:27:58,786 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:27:58,792 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:27:58,806 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:27:58,842 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:27:58,845 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:27:58,846 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:27:58,846 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:27:58,846 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:27:58,846 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:27:58,846 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:27:58,846 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:27:58,859 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-11-28 07:27:58,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:27:58,863 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:58,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:27:58,864 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:27:58,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:58,869 INFO L82 PathProgramCache]: Analyzing trace with hash -958093107, now seen corresponding path program 1 times [2020-11-28 07:27:58,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:27:58,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917910569] [2020-11-28 07:27:58,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/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 07:27:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:58,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 07:27:59,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:27:59,017 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 07:27:59,017 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:27:59,029 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 07:27:59,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917910569] [2020-11-28 07:27:59,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:59,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:27:59,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944099564] [2020-11-28 07:27:59,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:27:59,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:27:59,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:27:59,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:27:59,054 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-11-28 07:27:59,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:59,072 INFO L93 Difference]: Finished difference Result 55 states and 85 transitions. [2020-11-28 07:27:59,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:27:59,073 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 07:27:59,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:59,084 INFO L225 Difference]: With dead ends: 55 [2020-11-28 07:27:59,085 INFO L226 Difference]: Without dead ends: 25 [2020-11-28 07:27:59,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 07:27:59,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-11-28 07:27:59,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-11-28 07:27:59,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 07:27:59,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 35 transitions. [2020-11-28 07:27:59,127 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 35 transitions. Word has length 10 [2020-11-28 07:27:59,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:59,128 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 35 transitions. [2020-11-28 07:27:59,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:27:59,128 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 35 transitions. [2020-11-28 07:27:59,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:27:59,129 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:59,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:27:59,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:27:59,347 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:27:59,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:59,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1001566992, now seen corresponding path program 1 times [2020-11-28 07:27:59,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:27:59,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287589007] [2020-11-28 07:27:59,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/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 07:27:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:59,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:27:59,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:27:59,482 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 07:27:59,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:27:59,506 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 07:27:59,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287589007] [2020-11-28 07:27:59,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:59,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:27:59,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845527795] [2020-11-28 07:27:59,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:27:59,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:27:59,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:27:59,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:27:59,523 INFO L87 Difference]: Start difference. First operand 25 states and 35 transitions. Second operand 6 states. [2020-11-28 07:27:59,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:59,681 INFO L93 Difference]: Finished difference Result 52 states and 65 transitions. [2020-11-28 07:27:59,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:27:59,684 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-28 07:27:59,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:59,685 INFO L225 Difference]: With dead ends: 52 [2020-11-28 07:27:59,686 INFO L226 Difference]: Without dead ends: 47 [2020-11-28 07:27:59,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:27:59,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-28 07:27:59,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-28 07:27:59,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 07:27:59,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2020-11-28 07:27:59,696 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 11 [2020-11-28 07:27:59,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:59,696 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-28 07:27:59,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:27:59,697 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2020-11-28 07:27:59,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:27:59,698 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:59,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:27:59,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:27:59,919 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:27:59,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:59,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1219229111, now seen corresponding path program 1 times [2020-11-28 07:27:59,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:27:59,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2020401130] [2020-11-28 07:27:59,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/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 07:28:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:00,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 07:28:00,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:28:00,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:28:00,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:28:00,277 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 07:28:00,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2020401130] [2020-11-28 07:28:00,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:00,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-28 07:28:00,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178671933] [2020-11-28 07:28:00,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 07:28:00,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:28:00,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 07:28:00,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:28:00,281 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand 10 states. [2020-11-28 07:28:00,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:00,678 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2020-11-28 07:28:00,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:28:00,680 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-11-28 07:28:00,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:00,681 INFO L225 Difference]: With dead ends: 36 [2020-11-28 07:28:00,681 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 07:28:00,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:28:00,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 07:28:00,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-11-28 07:28:00,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 07:28:00,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 33 transitions. [2020-11-28 07:28:00,695 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 33 transitions. Word has length 14 [2020-11-28 07:28:00,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:00,695 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 33 transitions. [2020-11-28 07:28:00,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 07:28:00,696 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 33 transitions. [2020-11-28 07:28:00,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 07:28:00,697 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:00,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:00,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 07:28:00,919 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:00,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:00,919 INFO L82 PathProgramCache]: Analyzing trace with hash 1012428811, now seen corresponding path program 1 times [2020-11-28 07:28:00,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:28:00,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543807822] [2020-11-28 07:28:00,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-28 07:28:01,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:01,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:28:01,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:28:01,042 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 07:28:01,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:28:01,068 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 07:28:01,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543807822] [2020-11-28 07:28:01,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:01,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:28:01,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280116301] [2020-11-28 07:28:01,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:28:01,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:28:01,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:28:01,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:28:01,071 INFO L87 Difference]: Start difference. First operand 25 states and 33 transitions. Second operand 6 states. [2020-11-28 07:28:01,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:01,222 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-11-28 07:28:01,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:28:01,225 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-28 07:28:01,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:01,226 INFO L225 Difference]: With dead ends: 52 [2020-11-28 07:28:01,226 INFO L226 Difference]: Without dead ends: 47 [2020-11-28 07:28:01,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:28:01,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-28 07:28:01,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-11-28 07:28:01,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 07:28:01,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2020-11-28 07:28:01,233 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 16 [2020-11-28 07:28:01,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:01,236 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2020-11-28 07:28:01,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:28:01,236 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2020-11-28 07:28:01,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:28:01,237 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:01,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:01,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 07:28:01,439 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:01,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:01,439 INFO L82 PathProgramCache]: Analyzing trace with hash -356841937, now seen corresponding path program 1 times [2020-11-28 07:28:01,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:28:01,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879998492] [2020-11-28 07:28:01,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-11-28 07:28:01,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:01,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 07:28:01,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:28:01,728 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 07:28:01,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:28:01,906 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 07:28:01,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879998492] [2020-11-28 07:28:01,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:01,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 12 [2020-11-28 07:28:01,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80439459] [2020-11-28 07:28:01,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 07:28:01,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:28:01,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 07:28:01,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-28 07:28:01,909 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand 12 states. [2020-11-28 07:28:02,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:02,325 INFO L93 Difference]: Finished difference Result 32 states and 39 transitions. [2020-11-28 07:28:02,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:28:02,326 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 18 [2020-11-28 07:28:02,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:02,326 INFO L225 Difference]: With dead ends: 32 [2020-11-28 07:28:02,326 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 07:28:02,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-11-28 07:28:02,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 07:28:02,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-28 07:28:02,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 07:28:02,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-11-28 07:28:02,332 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 18 [2020-11-28 07:28:02,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:02,332 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-11-28 07:28:02,332 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 07:28:02,332 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-11-28 07:28:02,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 07:28:02,333 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:28:02,333 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:28:02,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 07:28:02,544 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:28:02,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:28:02,544 INFO L82 PathProgramCache]: Analyzing trace with hash -208376157, now seen corresponding path program 1 times [2020-11-28 07:28:02,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:28:02,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164675790] [2020-11-28 07:28:02,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-11-28 07:28:02,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:28:02,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 07:28:02,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:28:02,761 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 07:28:02,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:28:02,881 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 07:28:02,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164675790] [2020-11-28 07:28:02,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:28:02,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2020-11-28 07:28:02,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835716611] [2020-11-28 07:28:02,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 07:28:02,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:28:02,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 07:28:02,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:28:02,883 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 10 states. [2020-11-28 07:28:03,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:03,190 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2020-11-28 07:28:03,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:28:03,190 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-11-28 07:28:03,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:03,192 INFO L225 Difference]: With dead ends: 23 [2020-11-28 07:28:03,193 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:28:03,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 2 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:28:03,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:28:03,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:28:03,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:28:03,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:28:03,194 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-11-28 07:28:03,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:03,194 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:28:03,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 07:28:03,195 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:28:03,195 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:28:03,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-28 07:28:03,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:28:03,665 INFO L270 CegarLoopResult]: At program point L56(line 56) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_fmax_float_#res|)) (= (_ bv1 32) |ULTIMATE.start_isnan_float_#res|) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y))) [2020-11-28 07:28:03,665 INFO L274 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-11-28 07:28:03,666 INFO L274 CegarLoopResult]: For program point L52-2(line 52) no Hoare annotation was computed. [2020-11-28 07:28:03,666 INFO L270 CegarLoopResult]: At program point L52-3(lines 44 53) the Hoare annotation is: (and (exists ((currentRoundingMode RoundingMode)) (= (fp.div currentRoundingMode (_ +zero 8 24) (_ +zero 8 24)) |ULTIMATE.start_fmax_float_#res|)) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y))) [2020-11-28 07:28:03,666 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-11-28 07:28:03,666 INFO L274 CegarLoopResult]: For program point L3-1(line 3) no Hoare annotation was computed. [2020-11-28 07:28:03,666 INFO L274 CegarLoopResult]: For program point L32(lines 32 41) no Hoare annotation was computed. [2020-11-28 07:28:03,666 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 07:28:03,666 INFO L274 CegarLoopResult]: For program point L32-1(lines 32 41) no Hoare annotation was computed. [2020-11-28 07:28:03,666 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:28:03,666 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 07:28:03,666 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-28 07:28:03,667 INFO L274 CegarLoopResult]: For program point L24-1(lines 24 28) no Hoare annotation was computed. [2020-11-28 07:28:03,667 INFO L270 CegarLoopResult]: At program point L24-2(lines 24 28) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y))) [2020-11-28 07:28:03,667 INFO L274 CegarLoopResult]: For program point L24-3(lines 21 42) no Hoare annotation was computed. [2020-11-28 07:28:03,667 INFO L274 CegarLoopResult]: For program point L24-5(lines 24 28) no Hoare annotation was computed. [2020-11-28 07:28:03,667 INFO L270 CegarLoopResult]: At program point L24-6(lines 24 28) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y))) [2020-11-28 07:28:03,667 INFO L274 CegarLoopResult]: For program point L24-7(lines 21 42) no Hoare annotation was computed. [2020-11-28 07:28:03,667 INFO L274 CegarLoopResult]: For program point L49(lines 49 51) no Hoare annotation was computed. [2020-11-28 07:28:03,667 INFO L274 CegarLoopResult]: For program point L45(lines 45 47) no Hoare annotation was computed. [2020-11-28 07:28:03,667 INFO L270 CegarLoopResult]: At program point L41(lines 21 42) the Hoare annotation is: (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y))) [2020-11-28 07:28:03,668 INFO L270 CegarLoopResult]: At program point L41-1(lines 21 42) the Hoare annotation is: (let ((.cse0 (not (fp.eq ULTIMATE.start_fmax_float_~y ULTIMATE.start_fmax_float_~y)))) (or (and (not (fp.eq ULTIMATE.start_fmax_float_~x ULTIMATE.start_fmax_float_~x)) .cse0) (and (not (= (_ bv0 32) |ULTIMATE.start___fpclassify_float_#res|)) .cse0))) [2020-11-28 07:28:03,668 INFO L274 CegarLoopResult]: For program point L66(lines 66 69) no Hoare annotation was computed. [2020-11-28 07:28:03,668 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:28:03,668 INFO L277 CegarLoopResult]: At program point L71(lines 58 72) the Hoare annotation is: true [2020-11-28 07:28:03,668 INFO L274 CegarLoopResult]: For program point L38(lines 38 41) no Hoare annotation was computed. [2020-11-28 07:28:03,668 INFO L274 CegarLoopResult]: For program point L38-1(lines 38 41) no Hoare annotation was computed. [2020-11-28 07:28:03,668 INFO L274 CegarLoopResult]: For program point L35(lines 35 41) no Hoare annotation was computed. [2020-11-28 07:28:03,668 INFO L274 CegarLoopResult]: For program point L35-1(lines 35 41) no Hoare annotation was computed. [2020-11-28 07:28:03,679 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:03,680 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:03,681 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:03,681 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:03,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:28:03 BoogieIcfgContainer [2020-11-28 07:28:03,685 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:28:03,685 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:28:03,686 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:28:03,686 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:28:03,686 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:58" (3/4) ... [2020-11-28 07:28:03,689 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:28:03,700 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 15 nodes and edges [2020-11-28 07:28:03,700 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-28 07:28:03,701 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-28 07:28:03,708 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:28:03,727 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~FLOAT(y, y) [2020-11-28 07:28:03,728 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y) [2020-11-28 07:28:03,728 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (!~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y)) || (!(0bv32 == \result) && !~fp.eq~FLOAT(y, y)) [2020-11-28 07:28:03,759 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3b681416-ca2c-4a99-9e37-20b4de23df2a/bin/utaipan/witness.graphml [2020-11-28 07:28:03,760 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:28:03,762 INFO L168 Benchmark]: Toolchain (without parser) took 6333.00 ms. Allocated memory was 48.2 MB in the beginning and 73.4 MB in the end (delta: 25.2 MB). Free memory was 24.0 MB in the beginning and 53.5 MB in the end (delta: -29.5 MB). Peak memory consumption was 23.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:03,762 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 48.2 MB. Free memory was 30.4 MB in the beginning and 30.4 MB in the end (delta: 31.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:28:03,763 INFO L168 Benchmark]: CACSL2BoogieTranslator took 401.96 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 23.9 MB in the beginning and 44.8 MB in the end (delta: -21.0 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:03,764 INFO L168 Benchmark]: Boogie Procedure Inliner took 94.60 ms. Allocated memory is still 60.8 MB. Free memory was 44.8 MB in the beginning and 43.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:03,764 INFO L168 Benchmark]: Boogie Preprocessor took 74.71 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 41.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:28:03,765 INFO L168 Benchmark]: RCFGBuilder took 754.49 ms. Allocated memory is still 60.8 MB. Free memory was 41.6 MB in the beginning and 39.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:03,766 INFO L168 Benchmark]: TraceAbstraction took 4920.89 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 39.0 MB in the beginning and 27.3 MB in the end (delta: 11.7 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:03,766 INFO L168 Benchmark]: Witness Printer took 74.48 ms. Allocated memory is still 73.4 MB. Free memory was 27.3 MB in the beginning and 53.5 MB in the end (delta: -26.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:03,770 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 48.2 MB. Free memory was 30.4 MB in the beginning and 30.4 MB in the end (delta: 31.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 401.96 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 23.9 MB in the beginning and 44.8 MB in the end (delta: -21.0 MB). Peak memory consumption was 4.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 94.60 ms. Allocated memory is still 60.8 MB. Free memory was 44.8 MB in the beginning and 43.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 74.71 ms. Allocated memory is still 60.8 MB. Free memory was 43.2 MB in the beginning and 41.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 754.49 ms. Allocated memory is still 60.8 MB. Free memory was 41.6 MB in the beginning and 39.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4920.89 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 39.0 MB in the beginning and 27.3 MB in the end (delta: 11.7 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. * Witness Printer took 74.48 ms. Allocated memory is still 73.4 MB. Free memory was 27.3 MB in the beginning and 53.5 MB in the end (delta: -26.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * 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: 24]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 44]: Loop Invariant [2020-11-28 07:28:03,778 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:03,778 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: (\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 56]: Loop Invariant [2020-11-28 07:28:03,779 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-11-28 07:28:03,780 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: ((\exists currentRoundingMode : FloatRoundingMode :: ~fp.div~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~Pluszero~LONGDOUBLE()) == \result) && 1bv32 == \result) && !~fp.eq~FLOAT(y, y) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: (!~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y)) || (!(0bv32 == \result) && !~fp.eq~FLOAT(y, y)) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: !~fp.eq~FLOAT(x, x) && !~fp.eq~FLOAT(y, y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.5s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 182 SDtfs, 117 SDslu, 549 SDs, 0 SdLazy, 138 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 181 GetRequests, 130 SyntacticMatches, 3 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 7 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 6 MinimizatonAttempts, 42 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 19 NumberOfFragments, 74 HoareAnnotationTreeSize, 7 FomulaSimplifications, 231 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 4 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 164 ConstructedInterpolants, 36 QuantifiedInterpolants, 8446 SizeOfPredicates, 32 NumberOfNonLiveVariables, 375 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 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...