./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_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_3c91f307-8666-4839-beaf-e29f96bbc02a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/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 38561929b5142acce65cab4da64e7c4ae5f17524 ...................................................................................................................................................................................................................................................................................................... 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_3c91f307-8666-4839-beaf-e29f96bbc02a/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/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 38561929b5142acce65cab4da64e7c4ae5f17524 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-30 01:43:24,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:43:24,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:43:24,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:43:24,504 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:43:24,510 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:43:24,512 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:43:24,517 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:43:24,520 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:43:24,526 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:43:24,527 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:43:24,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:43:24,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:43:24,534 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:43:24,536 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:43:24,538 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:43:24,539 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:43:24,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:43:24,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:43:24,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:43:24,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:43:24,559 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:43:24,561 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:43:24,563 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:43:24,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:43:24,573 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:43:24,573 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:43:24,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:43:24,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:43:24,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:43:24,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:43:24,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:43:24,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:43:24,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:43:24,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:43:24,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:43:24,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:43:24,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:43:24,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:43:24,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:43:24,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:43:24,591 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 01:43:24,628 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:43:24,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:43:24,630 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:43:24,631 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:43:24,631 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:43:24,631 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:43:24,632 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 01:43:24,632 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:43:24,632 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:43:24,633 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 01:43:24,634 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 01:43:24,634 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:43:24,635 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 01:43:24,635 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 01:43:24,635 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 01:43:24,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:43:24,636 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:43:24,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:43:24,637 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:43:24,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:43:24,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:43:24,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:43:24,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:43:24,638 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:43:24,639 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:43:24,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:43:24,639 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:43:24,640 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:43:24,640 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:43:24,640 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:43:24,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:43:24,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:43:24,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:43:24,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:43:24,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:43:24,642 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 01:43:24,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:43:24,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:43:24,643 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:43:24,643 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:43:24,644 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_3c91f307-8666-4839-beaf-e29f96bbc02a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38561929b5142acce65cab4da64e7c4ae5f17524 [2020-11-30 01:43:24,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:43:25,015 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:43:25,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:43:25,019 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:43:25,025 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:43:25,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2020-11-30 01:43:25,102 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/bin/utaipan/data/3791700c2/76a88c25a3f648b3a3a2d43606562478/FLAG7d9d5f798 [2020-11-30 01:43:25,540 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:43:25,541 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2020-11-30 01:43:25,548 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/bin/utaipan/data/3791700c2/76a88c25a3f648b3a3a2d43606562478/FLAG7d9d5f798 [2020-11-30 01:43:25,939 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/bin/utaipan/data/3791700c2/76a88c25a3f648b3a3a2d43606562478 [2020-11-30 01:43:25,941 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:43:25,942 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:43:25,945 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:43:25,946 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:43:25,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:43:25,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:43:25" (1/1) ... [2020-11-30 01:43:25,954 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7da7310c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:25, skipping insertion in model container [2020-11-30 01:43:25,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:43:25" (1/1) ... [2020-11-30 01:43:25,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:43:25,981 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:43:26,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:43:26,177 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:43:26,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:43:26,224 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:43:26,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:26 WrapperNode [2020-11-30 01:43:26,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:43:26,228 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:43:26,228 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:43:26,228 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:43:26,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:26" (1/1) ... [2020-11-30 01:43:26,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:26" (1/1) ... [2020-11-30 01:43:26,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:43:26,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:43:26,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:43:26,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:43:26,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:26" (1/1) ... [2020-11-30 01:43:26,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:26" (1/1) ... [2020-11-30 01:43:26,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:26" (1/1) ... [2020-11-30 01:43:26,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:26" (1/1) ... [2020-11-30 01:43:26,309 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:26" (1/1) ... [2020-11-30 01:43:26,328 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:26" (1/1) ... [2020-11-30 01:43:26,330 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:26" (1/1) ... [2020-11-30 01:43:26,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:43:26,344 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:43:26,344 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:43:26,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:43:26,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/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 [2020-11-30 01:43:26,429 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:43:26,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:43:26,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-30 01:43:26,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:43:26,431 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:43:26,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 01:43:26,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:43:27,230 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:43:27,231 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 01:43:27,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:43:27 BoogieIcfgContainer [2020-11-30 01:43:27,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:43:27,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:43:27,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:43:27,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:43:27,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:43:25" (1/3) ... [2020-11-30 01:43:27,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514786c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:43:27, skipping insertion in model container [2020-11-30 01:43:27,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:26" (2/3) ... [2020-11-30 01:43:27,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@514786c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:43:27, skipping insertion in model container [2020-11-30 01:43:27,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:43:27" (3/3) ... [2020-11-30 01:43:27,242 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2020-11-30 01:43:27,254 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:43:27,263 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:43:27,276 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:43:27,304 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:43:27,304 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:43:27,305 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:43:27,305 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:43:27,305 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:43:27,305 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:43:27,305 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:43:27,305 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:43:27,317 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-30 01:43:27,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 01:43:27,322 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:43:27,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:43:27,323 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:43:27,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:43:27,330 INFO L82 PathProgramCache]: Analyzing trace with hash 709760188, now seen corresponding path program 1 times [2020-11-30 01:43:27,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:43:27,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738073960] [2020-11-30 01:43:27,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:43:27,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:27,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:27,482 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738073960] [2020-11-30 01:43:27,482 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:43:27,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:43:27,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105021852] [2020-11-30 01:43:27,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:43:27,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:43:27,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:43:27,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:43:27,505 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2020-11-30 01:43:27,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:43:27,524 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2020-11-30 01:43:27,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:43:27,525 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-30 01:43:27,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:43:27,534 INFO L225 Difference]: With dead ends: 35 [2020-11-30 01:43:27,535 INFO L226 Difference]: Without dead ends: 16 [2020-11-30 01:43:27,538 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 [2020-11-30 01:43:27,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-30 01:43:27,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-30 01:43:27,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 01:43:27,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-30 01:43:27,573 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2020-11-30 01:43:27,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:43:27,573 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-30 01:43:27,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:43:27,573 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-30 01:43:27,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-30 01:43:27,574 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:43:27,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:43:27,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:43:27,575 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:43:27,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:43:27,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1365755737, now seen corresponding path program 1 times [2020-11-30 01:43:27,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:43:27,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562704693] [2020-11-30 01:43:27,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:43:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:43:27,662 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:43:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:43:27,696 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:43:27,720 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 01:43:27,720 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:43:27,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:43:27,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:43:27 BoogieIcfgContainer [2020-11-30 01:43:27,750 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:43:27,750 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:43:27,750 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:43:27,751 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:43:27,751 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:43:27" (3/4) ... [2020-11-30 01:43:27,755 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:43:27,755 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:43:27,758 INFO L168 Benchmark]: Toolchain (without parser) took 1813.85 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 52.0 MB in the beginning and 68.9 MB in the end (delta: -16.9 MB). Peak memory consumption was 2.0 MB. Max. memory is 16.1 GB. [2020-11-30 01:43:27,758 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 88.1 MB. Free memory is still 68.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:43:27,759 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.31 ms. Allocated memory is still 88.1 MB. Free memory was 51.9 MB in the beginning and 64.3 MB in the end (delta: -12.5 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:43:27,760 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.89 ms. Allocated memory is still 88.1 MB. Free memory was 64.3 MB in the beginning and 62.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:43:27,761 INFO L168 Benchmark]: Boogie Preprocessor took 58.50 ms. Allocated memory is still 88.1 MB. Free memory was 62.6 MB in the beginning and 61.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:43:27,762 INFO L168 Benchmark]: RCFGBuilder took 889.77 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 61.0 MB in the beginning and 63.3 MB in the end (delta: -2.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:43:27,763 INFO L168 Benchmark]: TraceAbstraction took 514.71 ms. Allocated memory is still 107.0 MB. Free memory was 62.9 MB in the beginning and 69.4 MB in the end (delta: -6.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:43:27,763 INFO L168 Benchmark]: Witness Printer took 4.91 ms. Allocated memory is still 107.0 MB. Free memory was 69.4 MB in the beginning and 68.9 MB in the end (delta: 500.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:43:27,767 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 88.1 MB. Free memory is still 68.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 279.31 ms. Allocated memory is still 88.1 MB. Free memory was 51.9 MB in the beginning and 64.3 MB in the end (delta: -12.5 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.89 ms. Allocated memory is still 88.1 MB. Free memory was 64.3 MB in the beginning and 62.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 58.50 ms. Allocated memory is still 88.1 MB. Free memory was 62.6 MB in the beginning and 61.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 889.77 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 61.0 MB in the beginning and 63.3 MB in the end (delta: -2.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 514.71 ms. Allocated memory is still 107.0 MB. Free memory was 62.9 MB in the beginning and 69.4 MB in the end (delta: -6.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.91 ms. Allocated memory is still 107.0 MB. Free memory was 69.4 MB in the beginning and 68.9 MB in the end (delta: 500.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 71, overapproximation of someUnaryFLOAToperation at line 66. Possible FailurePath: [L66] float x = -0.0f; [L67] float y = 0.0f; [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND FALSE !(w == 0x00000000 || w == 0x80000000) [L25-L26] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) [L28-L29] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) [L31] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L34] return 0; [L38] COND TRUE __fpclassify_float(x) == 0 [L39] return y; [L68] float res = fmin_float(x, y); [L71] EXPR res == -0.0f && __signbit_float(res) == 1 [L71] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L3] __assert_fail("0", "float_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: 0.4s, 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 [2020-11-30 01:43:30,568 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:43:30,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:43:30,615 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:43:30,616 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:43:30,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:43:30,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:43:30,628 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:43:30,632 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:43:30,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:43:30,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:43:30,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:43:30,645 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:43:30,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:43:30,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:43:30,653 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:43:30,654 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:43:30,659 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:43:30,665 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:43:30,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:43:30,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:43:30,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:43:30,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:43:30,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:43:30,692 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:43:30,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:43:30,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:43:30,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:43:30,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:43:30,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:43:30,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:43:30,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:43:30,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:43:30,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:43:30,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:43:30,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:43:30,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:43:30,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:43:30,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:43:30,714 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:43:30,715 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:43:30,716 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 01:43:30,780 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:43:30,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:43:30,783 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:43:30,783 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:43:30,784 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:43:30,784 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:43:30,784 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:43:30,784 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:43:30,785 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:43:30,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:43:30,787 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:43:30,788 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:43:30,788 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:43:30,788 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:43:30,788 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:43:30,789 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:43:30,789 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 01:43:30,789 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 01:43:30,789 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 01:43:30,790 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:43:30,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:43:30,790 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:43:30,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:43:30,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:43:30,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:43:30,791 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:43:30,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:43:30,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:43:30,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:43:30,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:43:30,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:43:30,792 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 01:43:30,793 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 01:43:30,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:43:30,794 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:43:30,794 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:43:30,794 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_3c91f307-8666-4839-beaf-e29f96bbc02a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 38561929b5142acce65cab4da64e7c4ae5f17524 [2020-11-30 01:43:31,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:43:31,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:43:31,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:43:31,205 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:43:31,208 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:43:31,209 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/bin/utaipan/../../sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2020-11-30 01:43:31,302 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/bin/utaipan/data/a28427af0/c1aef5fb9a504d6f9c04304a413bc6e3/FLAGdc76a7f2f [2020-11-30 01:43:31,893 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:43:31,894 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/sv-benchmarks/c/float-newlib/float_req_bl_1232b.c [2020-11-30 01:43:31,902 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/bin/utaipan/data/a28427af0/c1aef5fb9a504d6f9c04304a413bc6e3/FLAGdc76a7f2f [2020-11-30 01:43:32,215 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/bin/utaipan/data/a28427af0/c1aef5fb9a504d6f9c04304a413bc6e3 [2020-11-30 01:43:32,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:43:32,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:43:32,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:43:32,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:43:32,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:43:32,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:43:32" (1/1) ... [2020-11-30 01:43:32,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8860523 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:32, skipping insertion in model container [2020-11-30 01:43:32,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:43:32" (1/1) ... [2020-11-30 01:43:32,236 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:43:32,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:43:32,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:43:32,450 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:43:32,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:43:32,493 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:43:32,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:32 WrapperNode [2020-11-30 01:43:32,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:43:32,495 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:43:32,495 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:43:32,495 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:43:32,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:32" (1/1) ... [2020-11-30 01:43:32,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:32" (1/1) ... [2020-11-30 01:43:32,569 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:43:32,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:43:32,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:43:32,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:43:32,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:32" (1/1) ... [2020-11-30 01:43:32,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:32" (1/1) ... [2020-11-30 01:43:32,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:32" (1/1) ... [2020-11-30 01:43:32,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:32" (1/1) ... [2020-11-30 01:43:32,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:32" (1/1) ... [2020-11-30 01:43:32,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:32" (1/1) ... [2020-11-30 01:43:32,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:32" (1/1) ... [2020-11-30 01:43:32,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:43:32,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:43:32,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:43:32,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:43:32,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/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 [2020-11-30 01:43:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 01:43:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:43:32,716 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-11-30 01:43:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:43:32,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:43:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2020-11-30 01:43:32,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 01:43:33,355 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:43:33,355 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-11-30 01:43:33,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:43:33 BoogieIcfgContainer [2020-11-30 01:43:33,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:43:33,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:43:33,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:43:33,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:43:33,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:43:32" (1/3) ... [2020-11-30 01:43:33,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f894cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:43:33, skipping insertion in model container [2020-11-30 01:43:33,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:43:32" (2/3) ... [2020-11-30 01:43:33,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f894cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:43:33, skipping insertion in model container [2020-11-30 01:43:33,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:43:33" (3/3) ... [2020-11-30 01:43:33,367 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1232b.c [2020-11-30 01:43:33,380 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:43:33,384 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-30 01:43:33,398 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-30 01:43:33,442 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:43:33,442 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:43:33,442 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:43:33,442 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:43:33,443 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:43:33,443 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:43:33,443 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:43:33,443 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:43:33,460 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-30 01:43:33,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 01:43:33,467 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:43:33,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:43:33,469 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:43:33,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:43:33,475 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2020-11-30 01:43:33,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:43:33,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [868866582] [2020-11-30 01:43:33,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/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 [2020-11-30 01:43:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:33,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 01:43:33,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:43:33,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:33,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:43:33,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:33,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [868866582] [2020-11-30 01:43:33,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:43:33,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 01:43:33,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602488602] [2020-11-30 01:43:33,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:43:33,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:43:33,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:43:33,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:43:33,689 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-30 01:43:33,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:43:33,715 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-11-30 01:43:33,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:43:33,718 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 01:43:33,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:43:33,739 INFO L225 Difference]: With dead ends: 63 [2020-11-30 01:43:33,739 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 01:43:33,742 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 [2020-11-30 01:43:33,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 01:43:33,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-11-30 01:43:33,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-30 01:43:33,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2020-11-30 01:43:33,796 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2020-11-30 01:43:33,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:43:33,797 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2020-11-30 01:43:33,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:43:33,797 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2020-11-30 01:43:33,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 01:43:33,799 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:43:33,799 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:43:34,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 01:43:34,008 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:43:34,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:43:34,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2020-11-30 01:43:34,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:43:34,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [87777843] [2020-11-30 01:43:34,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/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 [2020-11-30 01:43:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:34,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:43:34,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:43:34,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:34,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:43:34,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:34,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [87777843] [2020-11-30 01:43:34,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:43:34,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 01:43:34,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735894078] [2020-11-30 01:43:34,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:43:34,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:43:34,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:43:34,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:43:34,180 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand 6 states. [2020-11-30 01:43:34,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:43:34,328 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-11-30 01:43:34,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:43:34,328 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-30 01:43:34,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:43:34,330 INFO L225 Difference]: With dead ends: 68 [2020-11-30 01:43:34,330 INFO L226 Difference]: Without dead ends: 59 [2020-11-30 01:43:34,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 01:43:34,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-30 01:43:34,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2020-11-30 01:43:34,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 01:43:34,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2020-11-30 01:43:34,339 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2020-11-30 01:43:34,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:43:34,340 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2020-11-30 01:43:34,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:43:34,340 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2020-11-30 01:43:34,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 01:43:34,341 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:43:34,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:43:34,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 01:43:34,558 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:43:34,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:43:34,559 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2020-11-30 01:43:34,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:43:34,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515765273] [2020-11-30 01:43:34,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/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 [2020-11-30 01:43:34,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:34,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 01:43:34,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:43:34,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:34,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:43:34,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:34,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515765273] [2020-11-30 01:43:34,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:43:34,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2020-11-30 01:43:34,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937295457] [2020-11-30 01:43:34,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:43:34,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:43:34,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:43:34,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:43:34,810 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand 4 states. [2020-11-30 01:43:34,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:43:34,953 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2020-11-30 01:43:34,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:43:34,954 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-11-30 01:43:34,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:43:34,955 INFO L225 Difference]: With dead ends: 52 [2020-11-30 01:43:34,955 INFO L226 Difference]: Without dead ends: 26 [2020-11-30 01:43:34,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:43:34,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-30 01:43:34,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-30 01:43:34,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-30 01:43:34,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 32 transitions. [2020-11-30 01:43:34,960 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 32 transitions. Word has length 14 [2020-11-30 01:43:34,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:43:34,961 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 32 transitions. [2020-11-30 01:43:34,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:43:34,961 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 32 transitions. [2020-11-30 01:43:34,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 01:43:34,962 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:43:34,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:43:35,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 01:43:35,185 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:43:35,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:43:35,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2020-11-30 01:43:35,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:43:35,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [849407879] [2020-11-30 01:43:35,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/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 [2020-11-30 01:43:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:35,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-30 01:43:35,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:43:35,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:35,279 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:43:35,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:35,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [849407879] [2020-11-30 01:43:35,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:43:35,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 01:43:35,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577938125] [2020-11-30 01:43:35,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 01:43:35,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:43:35,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 01:43:35,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:43:35,299 INFO L87 Difference]: Start difference. First operand 26 states and 32 transitions. Second operand 6 states. [2020-11-30 01:43:35,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:43:35,408 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-11-30 01:43:35,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 01:43:35,417 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-11-30 01:43:35,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:43:35,418 INFO L225 Difference]: With dead ends: 61 [2020-11-30 01:43:35,418 INFO L226 Difference]: Without dead ends: 52 [2020-11-30 01:43:35,419 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 [2020-11-30 01:43:35,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-30 01:43:35,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 28. [2020-11-30 01:43:35,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 01:43:35,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2020-11-30 01:43:35,425 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 16 [2020-11-30 01:43:35,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:43:35,425 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2020-11-30 01:43:35,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 01:43:35,426 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2020-11-30 01:43:35,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:43:35,426 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:43:35,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:43:35,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-11-30 01:43:35,633 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:43:35,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:43:35,634 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2020-11-30 01:43:35,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:43:35,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1419537636] [2020-11-30 01:43:35,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/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 [2020-11-30 01:43:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:35,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 01:43:35,712 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:43:35,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:35,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:43:35,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:35,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1419537636] [2020-11-30 01:43:35,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:43:35,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-11-30 01:43:35,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807129016] [2020-11-30 01:43:35,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:43:35,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:43:35,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:43:35,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:43:35,786 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand 4 states. [2020-11-30 01:43:35,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:43:35,802 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2020-11-30 01:43:35,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:43:35,805 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-11-30 01:43:35,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:43:35,806 INFO L225 Difference]: With dead ends: 38 [2020-11-30 01:43:35,806 INFO L226 Difference]: Without dead ends: 28 [2020-11-30 01:43:35,807 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 [2020-11-30 01:43:35,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-30 01:43:35,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-30 01:43:35,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-30 01:43:35,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-11-30 01:43:35,819 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 18 [2020-11-30 01:43:35,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:43:35,819 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-11-30 01:43:35,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:43:35,820 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-11-30 01:43:35,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 01:43:35,821 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:43:35,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:43:36,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-11-30 01:43:36,024 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:43:36,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:43:36,025 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2020-11-30 01:43:36,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:43:36,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159204198] [2020-11-30 01:43:36,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/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 [2020-11-30 01:43:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:36,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-30 01:43:36,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:43:36,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:36,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:43:36,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:36,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159204198] [2020-11-30 01:43:36,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:43:36,238 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2020-11-30 01:43:36,238 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325688429] [2020-11-30 01:43:36,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 01:43:36,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:43:36,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 01:43:36,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-30 01:43:36,240 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 9 states. [2020-11-30 01:43:36,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:43:36,402 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-11-30 01:43:36,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 01:43:36,402 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-11-30 01:43:36,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:43:36,403 INFO L225 Difference]: With dead ends: 40 [2020-11-30 01:43:36,403 INFO L226 Difference]: Without dead ends: 37 [2020-11-30 01:43:36,404 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 [2020-11-30 01:43:36,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-30 01:43:36,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30. [2020-11-30 01:43:36,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-30 01:43:36,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-11-30 01:43:36,410 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 18 [2020-11-30 01:43:36,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:43:36,410 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-11-30 01:43:36,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 01:43:36,410 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-11-30 01:43:36,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 01:43:36,411 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:43:36,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:43:36,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-11-30 01:43:36,622 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:43:36,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:43:36,623 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2020-11-30 01:43:36,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:43:36,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451953191] [2020-11-30 01:43:36,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/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 [2020-11-30 01:43:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:43:36,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 01:43:36,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:43:36,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:36,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:43:36,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:43:36,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451953191] [2020-11-30 01:43:36,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:43:36,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2020-11-30 01:43:36,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745999921] [2020-11-30 01:43:36,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:43:36,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 01:43:36,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:43:36,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:43:36,789 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2020-11-30 01:43:36,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:43:36,855 INFO L93 Difference]: Finished difference Result 43 states and 47 transitions. [2020-11-30 01:43:36,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:43:36,856 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-11-30 01:43:36,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:43:36,857 INFO L225 Difference]: With dead ends: 43 [2020-11-30 01:43:36,857 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 01:43:36,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 01:43:36,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 01:43:36,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-30 01:43:36,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 01:43:36,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 22 transitions. [2020-11-30 01:43:36,862 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 22 transitions. Word has length 19 [2020-11-30 01:43:36,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:43:36,862 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 22 transitions. [2020-11-30 01:43:36,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:43:36,863 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 22 transitions. [2020-11-30 01:43:36,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-30 01:43:36,863 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:43:36,864 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] [2020-11-30 01:43:37,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-11-30 01:43:37,065 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 01:43:37,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:43:37,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2020-11-30 01:43:37,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 01:43:37,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [166231934] [2020-11-30 01:43:37,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/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 [2020-11-30 01:43:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:43:37,236 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:43:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:43:37,352 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:43:37,407 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-30 01:43:37,407 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:43:37,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-11-30 01:43:37,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:43:37 BoogieIcfgContainer [2020-11-30 01:43:37,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:43:37,659 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:43:37,659 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:43:37,659 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:43:37,660 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:43:33" (3/4) ... [2020-11-30 01:43:37,662 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:43:37,732 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3c91f307-8666-4839-beaf-e29f96bbc02a/bin/utaipan/witness.graphml [2020-11-30 01:43:37,733 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:43:37,739 INFO L168 Benchmark]: Toolchain (without parser) took 5515.17 ms. Allocated memory was 65.0 MB in the beginning and 96.5 MB in the end (delta: 31.5 MB). Free memory was 45.2 MB in the beginning and 65.1 MB in the end (delta: -19.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 16.1 GB. [2020-11-30 01:43:37,739 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 65.0 MB. Free memory is still 46.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:43:37,740 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.81 ms. Allocated memory is still 65.0 MB. Free memory was 45.0 MB in the beginning and 34.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:43:37,740 INFO L168 Benchmark]: Boogie Procedure Inliner took 85.06 ms. Allocated memory is still 65.0 MB. Free memory was 34.1 MB in the beginning and 47.5 MB in the end (delta: -13.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:43:37,741 INFO L168 Benchmark]: Boogie Preprocessor took 66.87 ms. Allocated memory is still 65.0 MB. Free memory was 47.5 MB in the beginning and 46.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:43:37,741 INFO L168 Benchmark]: RCFGBuilder took 708.24 ms. Allocated memory is still 65.0 MB. Free memory was 45.9 MB in the beginning and 43.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:43:37,742 INFO L168 Benchmark]: TraceAbstraction took 4299.51 ms. Allocated memory was 65.0 MB in the beginning and 96.5 MB in the end (delta: 31.5 MB). Free memory was 43.2 MB in the beginning and 67.4 MB in the end (delta: -24.2 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:43:37,742 INFO L168 Benchmark]: Witness Printer took 74.43 ms. Allocated memory is still 96.5 MB. Free memory was 67.4 MB in the beginning and 65.1 MB in the end (delta: 2.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:43:37,745 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 65.0 MB. Free memory is still 46.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 273.81 ms. Allocated memory is still 65.0 MB. Free memory was 45.0 MB in the beginning and 34.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 85.06 ms. Allocated memory is still 65.0 MB. Free memory was 34.1 MB in the beginning and 47.5 MB in the end (delta: -13.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.87 ms. Allocated memory is still 65.0 MB. Free memory was 47.5 MB in the beginning and 46.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 708.24 ms. Allocated memory is still 65.0 MB. Free memory was 45.9 MB in the beginning and 43.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4299.51 ms. Allocated memory was 65.0 MB in the beginning and 96.5 MB in the end (delta: 31.5 MB). Free memory was 43.2 MB in the beginning and 67.4 MB in the end (delta: -24.2 MB). Peak memory consumption was 5.4 MB. Max. memory is 16.1 GB. * Witness Printer took 74.43 ms. Allocated memory is still 96.5 MB. Free memory was 67.4 MB in the beginning and 65.1 MB in the end (delta: 2.3 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: [L66] float x = -0.0f; [L67] float y = 0.0f; [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND TRUE w == 0x00000000 || w == 0x80000000 [L24] return 2; [L38] COND FALSE !(__fpclassify_float(x) == 0) [L15] __uint32_t w; [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (w) = gf_u.word [L23] COND TRUE w == 0x00000000 || w == 0x80000000 [L24] return 2; [L40] COND FALSE !(__fpclassify_float(y) == 0) [L43] EXPR x < y ? x : y [L43] return x < y ? x : y; [L68] float res = fmin_float(x, y); [L71] EXPR res == -0.0f && __signbit_float(res) == 1 [L47] __uint32_t w; [L50] ieee_float_shape_type gf_u; [L51] gf_u.value = (x) [L52] EXPR gf_u.word [L52] (w) = gf_u.word [L55] return (w & 0x80000000) != 0; [L71] EXPR res == -0.0f && __signbit_float(res) == 1 [L71] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L3] __assert_fail("0", "float_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: 4.1s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 222 SDtfs, 175 SDslu, 301 SDs, 0 SdLazy, 100 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 169 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s 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, 59 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 7783 SizeOfPredicates, 27 NumberOfNonLiveVariables, 433 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...