./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.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_600b1917-76fc-40c0-b299-a0eaf2aed486/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/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 c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 .......................................................................................................................................................................................................................................................................................................... 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_600b1917-76fc-40c0-b299-a0eaf2aed486/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/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 c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:44:02,407 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:44:02,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:44:02,456 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:44:02,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:44:02,463 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:44:02,465 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:44:02,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:44:02,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:44:02,485 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:44:02,486 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:44:02,487 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:44:02,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:44:02,488 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:44:02,490 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:44:02,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:44:02,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:44:02,494 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:44:02,497 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:44:02,501 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:44:02,508 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:44:02,509 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:44:02,511 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:44:02,516 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:44:02,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:44:02,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:44:02,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:44:02,521 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:44:02,522 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:44:02,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:44:02,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:44:02,525 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:44:02,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:44:02,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:44:02,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:44:02,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:44:02,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:44:02,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:44:02,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:44:02,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:44:02,533 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:44:02,534 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:44:02,572 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:44:02,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:44:02,573 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:44:02,573 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:44:02,573 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:44:02,574 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:44:02,574 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:44:02,574 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:44:02,574 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:44:02,575 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:44:02,575 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:44:02,575 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:44:02,575 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:44:02,576 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:44:02,576 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:44:02,577 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:44:02,577 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:44:02,577 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:44:02,578 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:44:02,578 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:44:02,578 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:44:02,578 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:44:02,579 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:44:02,579 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:44:02,579 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:44:02,579 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:44:02,579 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:44:02,580 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:44:02,580 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:44:02,580 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:44:02,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:44:02,581 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:44:02,581 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:44:02,581 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:44:02,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:44:02,582 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:44:02,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:44:02,582 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:44:02,582 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:44:02,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:44:02,583 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_600b1917-76fc-40c0-b299-a0eaf2aed486/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 [2020-11-28 07:44:02,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:44:02,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:44:02,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:44:02,851 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:44:02,852 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:44:02,853 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2020-11-28 07:44:02,999 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/bin/utaipan/data/fc6d54361/a9b83e2c9935486ca58a0099d2573490/FLAG4ab16990f [2020-11-28 07:44:03,446 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:44:03,447 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2020-11-28 07:44:03,461 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/bin/utaipan/data/fc6d54361/a9b83e2c9935486ca58a0099d2573490/FLAG4ab16990f [2020-11-28 07:44:03,828 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/bin/utaipan/data/fc6d54361/a9b83e2c9935486ca58a0099d2573490 [2020-11-28 07:44:03,831 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:44:03,832 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:44:03,839 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:44:03,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:44:03,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:44:03,844 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:44:03" (1/1) ... [2020-11-28 07:44:03,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73ae379a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:03, skipping insertion in model container [2020-11-28 07:44:03,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:44:03" (1/1) ... [2020-11-28 07:44:03,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:44:03,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:44:04,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:44:04,113 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:44:04,166 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:44:04,184 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:44:04,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:04 WrapperNode [2020-11-28 07:44:04,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:44:04,186 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:44:04,187 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:44:04,187 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:44:04,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:04" (1/1) ... [2020-11-28 07:44:04,204 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:04" (1/1) ... [2020-11-28 07:44:04,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:44:04,232 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:44:04,232 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:44:04,232 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:44:04,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:04" (1/1) ... [2020-11-28 07:44:04,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:04" (1/1) ... [2020-11-28 07:44:04,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:04" (1/1) ... [2020-11-28 07:44:04,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:04" (1/1) ... [2020-11-28 07:44:04,259 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:04" (1/1) ... [2020-11-28 07:44:04,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:04" (1/1) ... [2020-11-28 07:44:04,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:04" (1/1) ... [2020-11-28 07:44:04,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:44:04,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:44:04,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:44:04,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:44:04,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/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 07:44:04,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:44:04,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:44:04,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-28 07:44:04,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:44:04,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:44:04,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 07:44:04,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:44:05,091 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:44:05,091 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-28 07:44:05,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:44:05 BoogieIcfgContainer [2020-11-28 07:44:05,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:44:05,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:44:05,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:44:05,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:44:05,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:44:03" (1/3) ... [2020-11-28 07:44:05,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234398fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:44:05, skipping insertion in model container [2020-11-28 07:44:05,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:04" (2/3) ... [2020-11-28 07:44:05,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234398fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:44:05, skipping insertion in model container [2020-11-28 07:44:05,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:44:05" (3/3) ... [2020-11-28 07:44:05,102 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2020-11-28 07:44:05,114 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:44:05,118 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:44:05,130 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:44:05,162 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:44:05,162 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:44:05,162 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:44:05,162 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:44:05,162 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:44:05,163 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:44:05,163 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:44:05,163 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:44:05,174 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-28 07:44:05,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 07:44:05,179 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:05,179 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:05,179 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:05,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:05,184 INFO L82 PathProgramCache]: Analyzing trace with hash 709760188, now seen corresponding path program 1 times [2020-11-28 07:44:05,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:05,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582301852] [2020-11-28 07:44:05,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:05,311 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 07:44:05,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582301852] [2020-11-28 07:44:05,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:05,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 07:44:05,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158237632] [2020-11-28 07:44:05,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:44:05,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:44:05,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:44:05,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:44:05,335 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-28 07:44:05,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:05,352 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2020-11-28 07:44:05,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:44:05,354 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-28 07:44:05,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:05,365 INFO L225 Difference]: With dead ends: 35 [2020-11-28 07:44:05,366 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 07:44:05,371 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 07:44:05,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 07:44:05,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 07:44:05,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 07:44:05,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-28 07:44:05,406 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2020-11-28 07:44:05,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:05,407 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-28 07:44:05,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:44:05,407 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-28 07:44:05,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 07:44:05,408 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:05,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:05,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:44:05,408 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:05,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:05,411 INFO L82 PathProgramCache]: Analyzing trace with hash -1365755737, now seen corresponding path program 1 times [2020-11-28 07:44:05,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:44:05,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852689513] [2020-11-28 07:44:05,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:44:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:44:05,471 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:44:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:44:05,506 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:44:05,528 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-28 07:44:05,528 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:44:05,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:44:05,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:44:05 BoogieIcfgContainer [2020-11-28 07:44:05,560 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:44:05,561 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:44:05,561 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:44:05,561 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:44:05,562 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:44:05" (3/4) ... [2020-11-28 07:44:05,565 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 07:44:05,565 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:44:05,569 INFO L168 Benchmark]: Toolchain (without parser) took 1733.84 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 56.5 MB in the beginning and 52.0 MB in the end (delta: 4.5 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:05,569 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 88.1 MB. Free memory was 45.3 MB in the beginning and 45.3 MB in the end (delta: 34.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:44:05,571 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.65 ms. Allocated memory is still 88.1 MB. Free memory was 56.4 MB in the beginning and 65.1 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:05,572 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.90 ms. Allocated memory is still 88.1 MB. Free memory was 65.1 MB in the beginning and 63.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:05,573 INFO L168 Benchmark]: Boogie Preprocessor took 51.11 ms. Allocated memory is still 88.1 MB. Free memory was 63.2 MB in the beginning and 61.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:05,574 INFO L168 Benchmark]: RCFGBuilder took 809.55 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 61.5 MB in the beginning and 75.6 MB in the end (delta: -14.2 MB). Peak memory consumption was 33.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:05,575 INFO L168 Benchmark]: TraceAbstraction took 465.18 ms. Allocated memory is still 107.0 MB. Free memory was 75.1 MB in the beginning and 52.6 MB in the end (delta: 22.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:05,577 INFO L168 Benchmark]: Witness Printer took 4.33 ms. Allocated memory is still 107.0 MB. Free memory was 52.6 MB in the beginning and 52.0 MB in the end (delta: 550.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:05,588 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 88.1 MB. Free memory was 45.3 MB in the beginning and 45.3 MB in the end (delta: 34.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 346.65 ms. Allocated memory is still 88.1 MB. Free memory was 56.4 MB in the beginning and 65.1 MB in the end (delta: -8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 44.90 ms. Allocated memory is still 88.1 MB. Free memory was 65.1 MB in the beginning and 63.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.11 ms. Allocated memory is still 88.1 MB. Free memory was 63.2 MB in the beginning and 61.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 809.55 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 61.5 MB in the beginning and 75.6 MB in the end (delta: -14.2 MB). Peak memory consumption was 33.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 465.18 ms. Allocated memory is still 107.0 MB. Free memory was 75.1 MB in the beginning and 52.6 MB in the end (delta: 22.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.1 GB. * Witness Printer took 4.33 ms. Allocated memory is still 107.0 MB. Free memory was 52.6 MB in the beginning and 52.0 MB in the end (delta: 550.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 81, overapproximation of someUnaryDOUBLEoperation at line 76. Possible FailurePath: [L76] double x = -0.0; [L77] double y = 0.0; [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L33-L34] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L36-L37] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L40-L41] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L44] return 0; [L48] COND TRUE __fpclassify_double(x) == 0 [L49] return y; [L78] double res = fmin_double(x, y); [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_1232b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 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=18occurred 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, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 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 07:44:08,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:44:08,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:44:08,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:44:08,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:44:08,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:44:08,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:44:08,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:44:08,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:44:08,083 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:44:08,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:44:08,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:44:08,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:44:08,088 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:44:08,089 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:44:08,090 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:44:08,091 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:44:08,093 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:44:08,095 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:44:08,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:44:08,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:44:08,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:44:08,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:44:08,103 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:44:08,107 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:44:08,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:44:08,108 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:44:08,109 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:44:08,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:44:08,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:44:08,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:44:08,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:44:08,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:44:08,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:44:08,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:44:08,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:44:08,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:44:08,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:44:08,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:44:08,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:44:08,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:44:08,121 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-28 07:44:08,162 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:44:08,163 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:44:08,165 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:44:08,165 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:44:08,165 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:44:08,165 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:44:08,166 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:44:08,166 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:44:08,166 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:44:08,168 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:44:08,169 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:44:08,169 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:44:08,169 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:44:08,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:44:08,170 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:44:08,170 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:44:08,170 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:44:08,170 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-28 07:44:08,171 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-28 07:44:08,171 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:44:08,171 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:44:08,171 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:44:08,171 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:44:08,172 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:44:08,172 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 07:44:08,172 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:44:08,172 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:44:08,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:44:08,173 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:44:08,173 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:44:08,173 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:44:08,174 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-28 07:44:08,174 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-28 07:44:08,174 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:44:08,175 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:44:08,175 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:44:08,175 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_600b1917-76fc-40c0-b299-a0eaf2aed486/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 [2020-11-28 07:44:08,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:44:08,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:44:08,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:44:08,601 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:44:08,607 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:44:08,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/bin/utaipan/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2020-11-28 07:44:08,691 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/bin/utaipan/data/b7d8cec7c/fc0d531581cc41cca491b529c8289d73/FLAG43a997826 [2020-11-28 07:44:09,262 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:44:09,262 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2020-11-28 07:44:09,270 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/bin/utaipan/data/b7d8cec7c/fc0d531581cc41cca491b529c8289d73/FLAG43a997826 [2020-11-28 07:44:09,647 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/bin/utaipan/data/b7d8cec7c/fc0d531581cc41cca491b529c8289d73 [2020-11-28 07:44:09,650 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:44:09,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:44:09,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:44:09,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:44:09,657 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:44:09,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:44:09" (1/1) ... [2020-11-28 07:44:09,660 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32c883d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09, skipping insertion in model container [2020-11-28 07:44:09,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:44:09" (1/1) ... [2020-11-28 07:44:09,669 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:44:09,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:44:09,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:44:09,859 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:44:09,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:44:09,908 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:44:09,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09 WrapperNode [2020-11-28 07:44:09,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:44:09,911 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:44:09,911 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:44:09,911 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:44:09,953 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09" (1/1) ... [2020-11-28 07:44:09,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09" (1/1) ... [2020-11-28 07:44:09,998 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:44:09,999 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:44:09,999 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:44:09,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:44:10,008 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09" (1/1) ... [2020-11-28 07:44:10,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09" (1/1) ... [2020-11-28 07:44:10,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09" (1/1) ... [2020-11-28 07:44:10,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09" (1/1) ... [2020-11-28 07:44:10,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09" (1/1) ... [2020-11-28 07:44:10,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09" (1/1) ... [2020-11-28 07:44:10,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09" (1/1) ... [2020-11-28 07:44:10,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:44:10,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:44:10,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:44:10,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:44:10,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/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 07:44:10,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2020-11-28 07:44:10,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-28 07:44:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:44:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-28 07:44:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:44:10,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:44:10,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 07:44:10,833 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:44:10,834 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-28 07:44:10,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:44:10 BoogieIcfgContainer [2020-11-28 07:44:10,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:44:10,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:44:10,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:44:10,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:44:10,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:44:09" (1/3) ... [2020-11-28 07:44:10,844 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b09a299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:44:10, skipping insertion in model container [2020-11-28 07:44:10,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:44:09" (2/3) ... [2020-11-28 07:44:10,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b09a299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:44:10, skipping insertion in model container [2020-11-28 07:44:10,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:44:10" (3/3) ... [2020-11-28 07:44:10,847 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2020-11-28 07:44:10,858 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:44:10,863 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:44:10,875 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:44:10,912 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:44:10,913 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:44:10,913 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:44:10,913 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:44:10,913 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:44:10,913 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:44:10,913 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:44:10,913 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:44:10,928 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-28 07:44:10,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:44:10,934 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:10,935 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:10,936 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:10,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:10,942 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-11-28 07:44:10,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:44:10,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1543511412] [2020-11-28 07:44:10,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/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 07:44:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:11,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-28 07:44:11,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:44:11,109 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 07:44:11,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:44:11,115 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 07:44:11,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1543511412] [2020-11-28 07:44:11,117 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:11,118 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-28 07:44:11,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494565174] [2020-11-28 07:44:11,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 07:44:11,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:44:11,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 07:44:11,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 07:44:11,145 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-28 07:44:11,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:11,164 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-11-28 07:44:11,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 07:44:11,166 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 07:44:11,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:11,176 INFO L225 Difference]: With dead ends: 63 [2020-11-28 07:44:11,176 INFO L226 Difference]: Without dead ends: 29 [2020-11-28 07:44:11,179 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 07:44:11,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-28 07:44:11,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-28 07:44:11,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-28 07:44:11,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-11-28 07:44:11,218 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-11-28 07:44:11,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:11,219 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-11-28 07:44:11,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 07:44:11,219 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-11-28 07:44:11,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 07:44:11,220 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:11,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:11,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-28 07:44:11,436 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:11,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:11,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-11-28 07:44:11,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:44:11,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [668283722] [2020-11-28 07:44:11,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/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 07:44:11,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:11,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:44:11,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:44:11,623 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 07:44:11,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:44:11,675 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 07:44:11,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [668283722] [2020-11-28 07:44:11,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:11,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:44:11,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173923954] [2020-11-28 07:44:11,677 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:44:11,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:44:11,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:44:11,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:44:11,679 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2020-11-28 07:44:11,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:11,819 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-11-28 07:44:11,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:44:11,819 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-28 07:44:11,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:11,821 INFO L225 Difference]: With dead ends: 68 [2020-11-28 07:44:11,821 INFO L226 Difference]: Without dead ends: 59 [2020-11-28 07:44:11,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:44:11,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-28 07:44:11,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2020-11-28 07:44:11,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-28 07:44:11,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-28 07:44:11,830 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-11-28 07:44:11,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:11,830 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-28 07:44:11,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:44:11,830 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-28 07:44:11,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 07:44:11,831 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:11,831 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:12,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-28 07:44:12,053 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:12,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:12,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-11-28 07:44:12,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:44:12,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879510345] [2020-11-28 07:44:12,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/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 07:44:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:12,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 07:44:12,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:44:12,219 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 07:44:12,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:44:12,256 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:44:12,332 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 07:44:12,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879510345] [2020-11-28 07:44:12,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:12,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:44:12,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257904654] [2020-11-28 07:44:12,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:44:12,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:44:12,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:44:12,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:44:12,336 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 6 states. [2020-11-28 07:44:12,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:12,505 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-11-28 07:44:12,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:44:12,508 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-11-28 07:44:12,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:12,509 INFO L225 Difference]: With dead ends: 52 [2020-11-28 07:44:12,509 INFO L226 Difference]: Without dead ends: 28 [2020-11-28 07:44:12,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:44:12,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-28 07:44:12,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-28 07:44:12,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-28 07:44:12,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2020-11-28 07:44:12,515 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2020-11-28 07:44:12,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:12,515 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2020-11-28 07:44:12,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:44:12,515 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2020-11-28 07:44:12,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 07:44:12,516 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:12,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:12,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-28 07:44:12,717 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:12,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:12,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-11-28 07:44:12,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:44:12,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539487947] [2020-11-28 07:44:12,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/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 07:44:12,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:12,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:44:12,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:44:12,853 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 07:44:12,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:44:12,885 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 07:44:12,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539487947] [2020-11-28 07:44:12,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:12,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-28 07:44:12,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366183381] [2020-11-28 07:44:12,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:44:12,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:44:12,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:44:12,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-28 07:44:12,888 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand 6 states. [2020-11-28 07:44:13,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:13,051 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2020-11-28 07:44:13,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:44:13,053 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-28 07:44:13,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:13,054 INFO L225 Difference]: With dead ends: 65 [2020-11-28 07:44:13,055 INFO L226 Difference]: Without dead ends: 56 [2020-11-28 07:44:13,055 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 07:44:13,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-28 07:44:13,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2020-11-28 07:44:13,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 07:44:13,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-11-28 07:44:13,063 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2020-11-28 07:44:13,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:13,063 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-11-28 07:44:13,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:44:13,064 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-11-28 07:44:13,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:44:13,065 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:13,065 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 07:44:13,269 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-28 07:44:13,270 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:13,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:13,270 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-11-28 07:44:13,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:44:13,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1888671125] [2020-11-28 07:44:13,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/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 07:44:13,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:13,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 07:44:13,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:44:13,421 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 07:44:13,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:44:13,483 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 07:44:13,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1888671125] [2020-11-28 07:44:13,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:13,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-28 07:44:13,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406120618] [2020-11-28 07:44:13,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:44:13,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:44:13,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:44:13,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:44:13,486 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 4 states. [2020-11-28 07:44:13,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:13,511 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2020-11-28 07:44:13,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:44:13,515 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-28 07:44:13,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:13,515 INFO L225 Difference]: With dead ends: 40 [2020-11-28 07:44:13,516 INFO L226 Difference]: Without dead ends: 30 [2020-11-28 07:44:13,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:44:13,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-28 07:44:13,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-28 07:44:13,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 07:44:13,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2020-11-28 07:44:13,521 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2020-11-28 07:44:13,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:13,521 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2020-11-28 07:44:13,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:44:13,521 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2020-11-28 07:44:13,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 07:44:13,522 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:13,522 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 07:44:13,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-28 07:44:13,723 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:13,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:13,723 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-11-28 07:44:13,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:44:13,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1194734298] [2020-11-28 07:44:13,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/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 07:44:13,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:13,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 07:44:13,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:44:13,892 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 07:44:13,892 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:44:13,956 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 07:44:13,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1194734298] [2020-11-28 07:44:13,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:13,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-11-28 07:44:13,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979607360] [2020-11-28 07:44:13,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 07:44:13,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:44:13,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 07:44:13,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:44:13,959 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand 9 states. [2020-11-28 07:44:14,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:14,101 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-11-28 07:44:14,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 07:44:14,101 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-11-28 07:44:14,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:14,102 INFO L225 Difference]: With dead ends: 42 [2020-11-28 07:44:14,102 INFO L226 Difference]: Without dead ends: 39 [2020-11-28 07:44:14,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-11-28 07:44:14,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-28 07:44:14,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2020-11-28 07:44:14,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-28 07:44:14,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-11-28 07:44:14,108 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2020-11-28 07:44:14,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:14,108 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-11-28 07:44:14,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 07:44:14,108 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-11-28 07:44:14,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-28 07:44:14,109 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:14,109 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 07:44:14,309 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-28 07:44:14,310 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:14,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:14,310 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2020-11-28 07:44:14,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:44:14,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1136728700] [2020-11-28 07:44:14,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-28 07:44:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:44:14,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 07:44:14,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:44:14,504 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 07:44:14,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:44:14,592 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 07:44:14,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1136728700] [2020-11-28 07:44:14,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:44:14,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2020-11-28 07:44:14,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501400466] [2020-11-28 07:44:14,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 07:44:14,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-28 07:44:14,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 07:44:14,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 07:44:14,594 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 8 states. [2020-11-28 07:44:14,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:44:14,766 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-11-28 07:44:14,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:44:14,772 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-11-28 07:44:14,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:44:14,772 INFO L225 Difference]: With dead ends: 45 [2020-11-28 07:44:14,772 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 07:44:14,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:44:14,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 07:44:14,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-28 07:44:14,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 07:44:14,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-11-28 07:44:14,781 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2020-11-28 07:44:14,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:44:14,782 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-11-28 07:44:14,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 07:44:14,782 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-11-28 07:44:14,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 07:44:14,783 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:44:14,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:44:14,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-28 07:44:14,984 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:44:14,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:44:14,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-11-28 07:44:14,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-28 07:44:14,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159238444] [2020-11-28 07:44:14,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-11-28 07:44:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:44:15,224 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:44:15,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 07:44:15,518 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 07:44:15,582 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-28 07:44:15,582 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 07:44:15,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-28 07:44:15,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:44:15 BoogieIcfgContainer [2020-11-28 07:44:15,835 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:44:15,835 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:44:15,836 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:44:15,836 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:44:15,836 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:44:10" (3/4) ... [2020-11-28 07:44:15,838 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 07:44:15,897 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_600b1917-76fc-40c0-b299-a0eaf2aed486/bin/utaipan/witness.graphml [2020-11-28 07:44:15,897 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:44:15,900 INFO L168 Benchmark]: Toolchain (without parser) took 6247.44 ms. Allocated memory was 75.5 MB in the beginning and 94.4 MB in the end (delta: 18.9 MB). Free memory was 54.5 MB in the beginning and 36.1 MB in the end (delta: 18.4 MB). Peak memory consumption was 37.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:15,900 INFO L168 Benchmark]: CDTParser took 1.00 ms. Allocated memory is still 50.3 MB. Free memory was 31.3 MB in the beginning and 31.3 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:44:15,901 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.58 ms. Allocated memory is still 75.5 MB. Free memory was 54.4 MB in the beginning and 43.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:15,901 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.48 ms. Allocated memory is still 75.5 MB. Free memory was 43.2 MB in the beginning and 58.9 MB in the end (delta: -15.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:15,902 INFO L168 Benchmark]: Boogie Preprocessor took 49.18 ms. Allocated memory is still 75.5 MB. Free memory was 58.9 MB in the beginning and 57.1 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:44:15,902 INFO L168 Benchmark]: RCFGBuilder took 788.30 ms. Allocated memory is still 75.5 MB. Free memory was 57.1 MB in the beginning and 57.0 MB in the end (delta: 110.7 kB). Peak memory consumption was 24.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:15,903 INFO L168 Benchmark]: TraceAbstraction took 4996.03 ms. Allocated memory was 75.5 MB in the beginning and 94.4 MB in the end (delta: 18.9 MB). Free memory was 56.6 MB in the beginning and 39.1 MB in the end (delta: 17.5 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:15,904 INFO L168 Benchmark]: Witness Printer took 62.17 ms. Allocated memory is still 94.4 MB. Free memory was 39.1 MB in the beginning and 36.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:44:15,907 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.00 ms. Allocated memory is still 50.3 MB. Free memory was 31.3 MB in the beginning and 31.3 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 256.58 ms. Allocated memory is still 75.5 MB. Free memory was 54.4 MB in the beginning and 43.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 87.48 ms. Allocated memory is still 75.5 MB. Free memory was 43.2 MB in the beginning and 58.9 MB in the end (delta: -15.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.18 ms. Allocated memory is still 75.5 MB. Free memory was 58.9 MB in the beginning and 57.1 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 788.30 ms. Allocated memory is still 75.5 MB. Free memory was 57.1 MB in the beginning and 57.0 MB in the end (delta: 110.7 kB). Peak memory consumption was 24.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4996.03 ms. Allocated memory was 75.5 MB in the beginning and 94.4 MB in the end (delta: 18.9 MB). Free memory was 56.6 MB in the beginning and 39.1 MB in the end (delta: 17.5 MB). Peak memory consumption was 34.7 MB. Max. memory is 16.1 GB. * Witness Printer took 62.17 ms. Allocated memory is still 94.4 MB. Free memory was 39.1 MB in the beginning and 36.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L76] double x = -0.0; [L77] double y = 0.0; [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L32] return 2; [L48] COND FALSE !(__fpclassify_double(x) == 0) [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L32] return 2; [L50] COND FALSE !(__fpclassify_double(y) == 0) [L53] EXPR x < y ? x : y [L53] return x < y ? x : y; [L78] double res = fmin_double(x, y); [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L57] __uint32_t msw; [L60] ieee_double_shape_type gh_u; [L61] gh_u.value = (x) [L62] EXPR gh_u.parts.msw [L62] (msw) = gh_u.parts.msw [L65] return (msw & 0x80000000) != 0; [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L3] __assert_fail("0", "double_req_bl_1232b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.8s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 257 SDslu, 359 SDs, 0 SdLazy, 130 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 168 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 7 MinimizatonAttempts, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 15 QuantifiedInterpolants, 10714 SizeOfPredicates, 27 NumberOfNonLiveVariables, 463 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...