./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 .............................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:14:38,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:14:38,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:14:38,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:14:38,625 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:14:38,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:14:38,633 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:14:38,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:14:38,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:14:38,651 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:14:38,652 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:14:38,655 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:14:38,656 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:14:38,659 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:14:38,663 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:14:38,670 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:14:38,671 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:14:38,672 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:14:38,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:14:38,684 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:14:38,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:14:38,689 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:14:38,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:14:38,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:14:38,696 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:14:38,697 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:14:38,697 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:14:38,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:14:38,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:14:38,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:14:38,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:14:38,703 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:14:38,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:14:38,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:14:38,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:14:38,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:14:38,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:14:38,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:14:38,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:14:38,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:14:38,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:14:38,711 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-16 03:14:38,743 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:14:38,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:14:38,744 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:14:38,744 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:14:38,745 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:14:38,745 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:14:38,745 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-16 03:14:38,745 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:14:38,746 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:14:38,746 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-16 03:14:38,746 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-16 03:14:38,746 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:14:38,747 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-16 03:14:38,747 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-16 03:14:38,747 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-16 03:14:38,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:14:38,748 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:14:38,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-16 03:14:38,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:14:38,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:14:38,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:14:38,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:14:38,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:14:38,750 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:14:38,750 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:14:38,751 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:14:38,751 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:14:38,751 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:14:38,752 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:14:38,752 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:14:38,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:14:38,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:14:38,773 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:14:38,774 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:14:38,774 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-16 03:14:38,774 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-16 03:14:38,774 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:14:38,775 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:14:38,775 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:14:38,775 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_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 [2021-10-16 03:14:39,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:14:39,072 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:14:39,075 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:14:39,077 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:14:39,078 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:14:39,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2021-10-16 03:14:39,170 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/data/f2f784518/5215eb573ee24cd1b5ceb23d8305400b/FLAGfb23d826d [2021-10-16 03:14:39,692 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:14:39,693 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2021-10-16 03:14:39,701 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/data/f2f784518/5215eb573ee24cd1b5ceb23d8305400b/FLAGfb23d826d [2021-10-16 03:14:40,028 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/data/f2f784518/5215eb573ee24cd1b5ceb23d8305400b [2021-10-16 03:14:40,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:14:40,033 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:14:40,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:14:40,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:14:40,050 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:14:40,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:14:40" (1/1) ... [2021-10-16 03:14:40,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4421050c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:40, skipping insertion in model container [2021-10-16 03:14:40,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:14:40" (1/1) ... [2021-10-16 03:14:40,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:14:40,085 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:14:40,303 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c[1958,1971] [2021-10-16 03:14:40,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:14:40,316 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:14:40,344 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c[1958,1971] [2021-10-16 03:14:40,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:14:40,361 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:14:40,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:40 WrapperNode [2021-10-16 03:14:40,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:14:40,363 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:14:40,363 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:14:40,363 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:14:40,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:40" (1/1) ... [2021-10-16 03:14:40,382 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:40" (1/1) ... [2021-10-16 03:14:40,410 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:14:40,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:14:40,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:14:40,412 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:14:40,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:40" (1/1) ... [2021-10-16 03:14:40,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:40" (1/1) ... [2021-10-16 03:14:40,425 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:40" (1/1) ... [2021-10-16 03:14:40,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:40" (1/1) ... [2021-10-16 03:14:40,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:40" (1/1) ... [2021-10-16 03:14:40,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:40" (1/1) ... [2021-10-16 03:14:40,442 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:40" (1/1) ... [2021-10-16 03:14:40,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:14:40,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:14:40,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:14:40,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:14:40,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:40" (1/1) ... [2021-10-16 03:14:40,457 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:14:40,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:14:40,484 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:14:40,494 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:14:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-16 03:14:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:14:40,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-16 03:14:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:14:40,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:14:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-16 03:14:40,535 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:14:41,315 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:14:41,316 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-16 03:14:41,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:14:41 BoogieIcfgContainer [2021-10-16 03:14:41,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:14:41,321 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:14:41,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:14:41,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:14:41,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:14:40" (1/3) ... [2021-10-16 03:14:41,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f78e618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:14:41, skipping insertion in model container [2021-10-16 03:14:41,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:40" (2/3) ... [2021-10-16 03:14:41,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f78e618 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:14:41, skipping insertion in model container [2021-10-16 03:14:41,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:14:41" (3/3) ... [2021-10-16 03:14:41,331 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2021-10-16 03:14:41,344 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:14:41,344 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:14:41,387 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:14:41,393 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:14:41,394 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:14:41,407 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:41,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-16 03:14:41,412 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:14:41,413 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:14:41,413 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:14:41,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:14:41,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1433219361, now seen corresponding path program 1 times [2021-10-16 03:14:41,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:14:41,430 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347334473] [2021-10-16 03:14:41,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:14:41,431 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:14:41,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:14:41,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:41,625 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-16 03:14:41,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347334473] [2021-10-16 03:14:41,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347334473] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-16 03:14:41,627 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:14:41,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-16 03:14:41,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137115036] [2021-10-16 03:14:41,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 03:14:41,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-16 03:14:41,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 03:14:41,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:14:41,661 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.625) internal successors, (26), 17 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:41,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:14:41,685 INFO L93 Difference]: Finished difference Result 35 states and 51 transitions. [2021-10-16 03:14:41,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 03:14:41,688 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-16 03:14:41,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:14:41,699 INFO L225 Difference]: With dead ends: 35 [2021-10-16 03:14:41,699 INFO L226 Difference]: Without dead ends: 16 [2021-10-16 03:14:41,703 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:14:41,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-16 03:14:41,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-10-16 03:14:41,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 15 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:41,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-10-16 03:14:41,742 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 8 [2021-10-16 03:14:41,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:14:41,743 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-10-16 03:14:41,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:41,744 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-10-16 03:14:41,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-16 03:14:41,745 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:14:41,745 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:14:41,746 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-16 03:14:41,746 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:14:41,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:14:41,750 INFO L82 PathProgramCache]: Analyzing trace with hash -2131701560, now seen corresponding path program 1 times [2021-10-16 03:14:41,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-16 03:14:41,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830378850] [2021-10-16 03:14:41,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:14:41,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-16 03:14:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:14:41,860 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 03:14:41,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:14:41,993 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-16 03:14:41,993 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 03:14:41,995 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:14:42,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-16 03:14:42,008 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:14:42,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:14:42 BoogieIcfgContainer [2021-10-16 03:14:42,045 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:14:42,047 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:14:42,047 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:14:42,047 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:14:42,049 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:14:41" (3/4) ... [2021-10-16 03:14:42,053 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-16 03:14:42,054 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:14:42,057 INFO L168 Benchmark]: Toolchain (without parser) took 2022.12 ms. Allocated memory was 109.1 MB in the beginning and 142.6 MB in the end (delta: 33.6 MB). Free memory was 66.2 MB in the beginning and 105.5 MB in the end (delta: -39.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:14:42,058 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 109.1 MB. Free memory is still 82.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:14:42,060 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.65 ms. Allocated memory is still 109.1 MB. Free memory was 66.0 MB in the beginning and 82.2 MB in the end (delta: -16.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:14:42,063 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.70 ms. Allocated memory is still 109.1 MB. Free memory was 82.2 MB in the beginning and 80.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:14:42,070 INFO L168 Benchmark]: Boogie Preprocessor took 34.47 ms. Allocated memory is still 109.1 MB. Free memory was 80.3 MB in the beginning and 78.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:14:42,071 INFO L168 Benchmark]: RCFGBuilder took 872.55 ms. Allocated memory is still 109.1 MB. Free memory was 78.9 MB in the beginning and 54.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:14:42,072 INFO L168 Benchmark]: TraceAbstraction took 724.99 ms. Allocated memory was 109.1 MB in the beginning and 142.6 MB in the end (delta: 33.6 MB). Free memory was 54.4 MB in the beginning and 105.5 MB in the end (delta: -51.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:14:42,073 INFO L168 Benchmark]: Witness Printer took 7.13 ms. Allocated memory is still 142.6 MB. Free memory is still 105.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:14:42,082 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 109.1 MB. Free memory is still 82.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 315.65 ms. Allocated memory is still 109.1 MB. Free memory was 66.0 MB in the beginning and 82.2 MB in the end (delta: -16.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.70 ms. Allocated memory is still 109.1 MB. Free memory was 82.2 MB in the beginning and 80.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.47 ms. Allocated memory is still 109.1 MB. Free memory was 80.3 MB in the beginning and 78.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 872.55 ms. Allocated memory is still 109.1 MB. Free memory was 78.9 MB in the beginning and 54.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 724.99 ms. Allocated memory was 109.1 MB in the beginning and 142.6 MB in the end (delta: 33.6 MB). Free memory was 54.4 MB in the beginning and 105.5 MB in the end (delta: -51.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 7.13 ms. Allocated memory is still 142.6 MB. Free memory is still 105.5 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 82]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 81, overapproximation of someUnaryDOUBLEoperation at line 76. Possible FailurePath: [L76] double x = -0.0; [L77] double y = 0.0; [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L33-L34] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L36-L37] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L40-L41] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L44] return 0; [L48] COND TRUE __fpclassify_double(x) == 0 [L49] return y; [L78] double res = fmin_double(x, y); [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L82] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 620.0ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.4ms, AutomataDifference: 64.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 19 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 21.3ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.3ms SsaConstructionTime, 135.4ms SatisfiabilityAnalysisTime, 67.0ms InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 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 [2021-10-16 03:14:42,148 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-5709675 [2021-10-16 03:14:44,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-16 03:14:44,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-16 03:14:44,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-16 03:14:44,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-16 03:14:44,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-16 03:14:44,864 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-16 03:14:44,867 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-16 03:14:44,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-16 03:14:44,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-16 03:14:44,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-16 03:14:44,875 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-16 03:14:44,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-16 03:14:44,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-16 03:14:44,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-16 03:14:44,882 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-16 03:14:44,883 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-16 03:14:44,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-16 03:14:44,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-16 03:14:44,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-16 03:14:44,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-16 03:14:44,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-16 03:14:44,897 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-16 03:14:44,899 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-16 03:14:44,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-16 03:14:44,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-16 03:14:44,909 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-16 03:14:44,913 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-16 03:14:44,915 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-16 03:14:44,917 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-16 03:14:44,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-16 03:14:44,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-16 03:14:44,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-16 03:14:44,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-16 03:14:44,928 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-16 03:14:44,929 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-16 03:14:44,930 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-16 03:14:44,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-16 03:14:44,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-16 03:14:44,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-16 03:14:44,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-16 03:14:44,936 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-16 03:14:45,007 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-16 03:14:45,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-16 03:14:45,009 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-16 03:14:45,010 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-16 03:14:45,010 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-16 03:14:45,010 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-16 03:14:45,011 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-16 03:14:45,011 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-16 03:14:45,011 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-16 03:14:45,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-16 03:14:45,014 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-16 03:14:45,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-16 03:14:45,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-16 03:14:45,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-16 03:14:45,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-16 03:14:45,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-16 03:14:45,016 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-16 03:14:45,016 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-16 03:14:45,017 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-16 03:14:45,017 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-16 03:14:45,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-16 03:14:45,018 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-16 03:14:45,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-16 03:14:45,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-16 03:14:45,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-16 03:14:45,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-16 03:14:45,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:14:45,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-16 03:14:45,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-16 03:14:45,020 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-16 03:14:45,020 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-16 03:14:45,020 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-16 03:14:45,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-16 03:14:45,021 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-16 03:14:45,022 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-16 03:14:45,022 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_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8aa0f6d603c21abbc49650bbaaea4f693aff7f0 [2021-10-16 03:14:45,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-16 03:14:45,475 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-16 03:14:45,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-16 03:14:45,479 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-16 03:14:45,480 INFO L275 PluginConnector]: CDTParser initialized [2021-10-16 03:14:45,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/../../sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2021-10-16 03:14:45,567 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/data/0adf2c02a/1b8d3d56f2d74cf2a1085df4060ffcef/FLAG044ff38f8 [2021-10-16 03:14:46,059 INFO L306 CDTParser]: Found 1 translation units. [2021-10-16 03:14:46,060 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c [2021-10-16 03:14:46,071 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/data/0adf2c02a/1b8d3d56f2d74cf2a1085df4060ffcef/FLAG044ff38f8 [2021-10-16 03:14:46,441 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/data/0adf2c02a/1b8d3d56f2d74cf2a1085df4060ffcef [2021-10-16 03:14:46,445 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-16 03:14:46,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-16 03:14:46,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-16 03:14:46,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-16 03:14:46,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-16 03:14:46,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:14:46" (1/1) ... [2021-10-16 03:14:46,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b8d38de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:46, skipping insertion in model container [2021-10-16 03:14:46,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 03:14:46" (1/1) ... [2021-10-16 03:14:46,468 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-16 03:14:46,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-16 03:14:46,702 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c[1958,1971] [2021-10-16 03:14:46,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:14:46,720 INFO L203 MainTranslator]: Completed pre-run [2021-10-16 03:14:46,819 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/sv-benchmarks/c/float-newlib/double_req_bl_1232b.c[1958,1971] [2021-10-16 03:14:46,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-16 03:14:46,856 INFO L208 MainTranslator]: Completed translation [2021-10-16 03:14:46,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:46 WrapperNode [2021-10-16 03:14:46,857 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-16 03:14:46,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-16 03:14:46,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-16 03:14:46,859 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-16 03:14:46,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:46" (1/1) ... [2021-10-16 03:14:46,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:46" (1/1) ... [2021-10-16 03:14:46,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-16 03:14:46,937 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-16 03:14:46,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-16 03:14:46,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-16 03:14:46,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:46" (1/1) ... [2021-10-16 03:14:46,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:46" (1/1) ... [2021-10-16 03:14:46,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:46" (1/1) ... [2021-10-16 03:14:46,973 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:46" (1/1) ... [2021-10-16 03:14:46,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:46" (1/1) ... [2021-10-16 03:14:47,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:46" (1/1) ... [2021-10-16 03:14:47,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:46" (1/1) ... [2021-10-16 03:14:47,011 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-16 03:14:47,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-16 03:14:47,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-16 03:14:47,027 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-16 03:14:47,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:46" (1/1) ... [2021-10-16 03:14:47,036 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-16 03:14:47,053 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/z3 [2021-10-16 03:14:47,064 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-16 03:14:47,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-16 03:14:47,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-16 03:14:47,107 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-16 03:14:47,107 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-16 03:14:47,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-16 03:14:47,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-16 03:14:47,108 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-16 03:14:47,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-16 03:14:47,498 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-16 03:14:47,499 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-10-16 03:14:47,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:14:47 BoogieIcfgContainer [2021-10-16 03:14:47,501 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-16 03:14:47,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-16 03:14:47,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-16 03:14:47,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-16 03:14:47,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 03:14:46" (1/3) ... [2021-10-16 03:14:47,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0a7b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:14:47, skipping insertion in model container [2021-10-16 03:14:47,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 03:14:46" (2/3) ... [2021-10-16 03:14:47,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0a7b1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 03:14:47, skipping insertion in model container [2021-10-16 03:14:47,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:14:47" (3/3) ... [2021-10-16 03:14:47,509 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1232b.c [2021-10-16 03:14:47,514 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-16 03:14:47,514 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-16 03:14:47,582 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-16 03:14:47,596 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-16 03:14:47,597 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-16 03:14:47,614 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:47,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-16 03:14:47,626 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:14:47,627 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:14:47,628 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:14:47,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:14:47,634 INFO L82 PathProgramCache]: Analyzing trace with hash -958075201, now seen corresponding path program 1 times [2021-10-16 03:14:47,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:14:47,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [300705562] [2021-10-16 03:14:47,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:14:47,651 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:14:47,651 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:14:47,657 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:14:47,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-16 03:14:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:14:47,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-16 03:14:47,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:14:47,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:47,908 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:14:47,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:47,960 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:14:47,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [300705562] [2021-10-16 03:14:47,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [300705562] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:14:47,964 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:14:47,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-16 03:14:47,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773679607] [2021-10-16 03:14:47,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-16 03:14:47,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:14:47,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-16 03:14:47,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:14:47,994 INFO L87 Difference]: Start difference. First operand has 32 states, 30 states have (on average 1.6666666666666667) internal successors, (50), 31 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:48,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:14:48,019 INFO L93 Difference]: Finished difference Result 62 states and 98 transitions. [2021-10-16 03:14:48,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-16 03:14:48,021 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-16 03:14:48,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:14:48,031 INFO L225 Difference]: With dead ends: 62 [2021-10-16 03:14:48,032 INFO L226 Difference]: Without dead ends: 29 [2021-10-16 03:14:48,035 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-16 03:14:48,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-16 03:14:48,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-16 03:14:48,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.4285714285714286) internal successors, (40), 28 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:48,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 40 transitions. [2021-10-16 03:14:48,068 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 40 transitions. Word has length 10 [2021-10-16 03:14:48,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:14:48,068 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 40 transitions. [2021-10-16 03:14:48,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:48,069 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 40 transitions. [2021-10-16 03:14:48,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-16 03:14:48,070 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:14:48,070 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:14:48,090 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-16 03:14:48,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:14:48,284 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:14:48,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:14:48,285 INFO L82 PathProgramCache]: Analyzing trace with hash 1001584898, now seen corresponding path program 1 times [2021-10-16 03:14:48,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:14:48,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [464269009] [2021-10-16 03:14:48,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:14:48,287 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:14:48,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:14:48,289 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:14:48,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-16 03:14:48,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:14:48,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:14:48,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:14:48,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:48,442 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:14:48,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:48,498 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:14:48,498 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [464269009] [2021-10-16 03:14:48,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [464269009] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:14:48,512 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:14:48,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 03:14:48,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304087762] [2021-10-16 03:14:48,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:14:48,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:14:48,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:14:48,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:14:48,517 INFO L87 Difference]: Start difference. First operand 29 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:48,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:14:48,730 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2021-10-16 03:14:48,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 03:14:48,732 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-16 03:14:48,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:14:48,734 INFO L225 Difference]: With dead ends: 68 [2021-10-16 03:14:48,734 INFO L226 Difference]: Without dead ends: 59 [2021-10-16 03:14:48,736 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 49.8ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:14:48,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-10-16 03:14:48,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 31. [2021-10-16 03:14:48,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.4) internal successors, (42), 30 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:48,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 42 transitions. [2021-10-16 03:14:48,754 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 42 transitions. Word has length 11 [2021-10-16 03:14:48,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:14:48,755 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 42 transitions. [2021-10-16 03:14:48,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:48,756 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 42 transitions. [2021-10-16 03:14:48,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-16 03:14:48,759 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:14:48,760 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:14:48,790 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-16 03:14:48,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:14:48,976 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:14:48,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:14:48,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1219247017, now seen corresponding path program 1 times [2021-10-16 03:14:48,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:14:48,986 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [934910080] [2021-10-16 03:14:48,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:14:48,986 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:14:48,986 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:14:48,990 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:14:48,992 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-16 03:14:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:14:49,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 03:14:49,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:14:49,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:49,338 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:14:49,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:49,536 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:14:49,536 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [934910080] [2021-10-16 03:14:49,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [934910080] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:14:49,537 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:14:49,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 03:14:49,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674105292] [2021-10-16 03:14:49,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:14:49,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:14:49,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:14:49,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:14:49,540 INFO L87 Difference]: Start difference. First operand 31 states and 42 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:49,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:14:49,678 INFO L93 Difference]: Finished difference Result 52 states and 69 transitions. [2021-10-16 03:14:49,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-16 03:14:49,683 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-16 03:14:49,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:14:49,684 INFO L225 Difference]: With dead ends: 52 [2021-10-16 03:14:49,684 INFO L226 Difference]: Without dead ends: 28 [2021-10-16 03:14:49,685 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 83.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-16 03:14:49,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-16 03:14:49,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-16 03:14:49,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:49,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2021-10-16 03:14:49,695 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 14 [2021-10-16 03:14:49,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:14:49,695 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2021-10-16 03:14:49,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:49,696 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2021-10-16 03:14:49,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-16 03:14:49,697 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:14:49,697 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:14:49,716 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-16 03:14:49,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:14:49,898 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:14:49,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:14:49,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1012446717, now seen corresponding path program 1 times [2021-10-16 03:14:49,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:14:49,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [104092748] [2021-10-16 03:14:49,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:14:49,900 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:14:49,900 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:14:49,902 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:14:49,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-10-16 03:14:50,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:14:50,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-16 03:14:50,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:14:50,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:50,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:14:50,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:50,168 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:14:50,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [104092748] [2021-10-16 03:14:50,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [104092748] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:14:50,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:14:50,170 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-16 03:14:50,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849193794] [2021-10-16 03:14:50,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-16 03:14:50,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:14:50,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-16 03:14:50,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-16 03:14:50,172 INFO L87 Difference]: Start difference. First operand 28 states and 35 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:50,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:14:50,279 INFO L93 Difference]: Finished difference Result 65 states and 76 transitions. [2021-10-16 03:14:50,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-16 03:14:50,280 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-10-16 03:14:50,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:14:50,282 INFO L225 Difference]: With dead ends: 65 [2021-10-16 03:14:50,282 INFO L226 Difference]: Without dead ends: 56 [2021-10-16 03:14:50,283 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 43.5ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:14:50,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-16 03:14:50,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 30. [2021-10-16 03:14:50,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 29 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:50,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2021-10-16 03:14:50,289 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 16 [2021-10-16 03:14:50,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:14:50,290 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2021-10-16 03:14:50,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:50,290 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2021-10-16 03:14:50,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 03:14:50,291 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:14:50,291 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:14:50,311 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-10-16 03:14:50,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:14:50,506 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:14:50,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:14:50,506 INFO L82 PathProgramCache]: Analyzing trace with hash -414082333, now seen corresponding path program 1 times [2021-10-16 03:14:50,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:14:50,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [118628970] [2021-10-16 03:14:50,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:14:50,507 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:14:50,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:14:50,508 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:14:50,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-10-16 03:14:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:14:50,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-16 03:14:50,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:14:50,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:50,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:14:51,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:51,034 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:14:51,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [118628970] [2021-10-16 03:14:51,035 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [118628970] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:14:51,035 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:14:51,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-16 03:14:51,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046704739] [2021-10-16 03:14:51,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-16 03:14:51,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:14:51,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-16 03:14:51,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:14:51,037 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:51,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:14:51,057 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2021-10-16 03:14:51,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-16 03:14:51,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-16 03:14:51,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:14:51,058 INFO L225 Difference]: With dead ends: 40 [2021-10-16 03:14:51,058 INFO L226 Difference]: Without dead ends: 30 [2021-10-16 03:14:51,059 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 44.5ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-16 03:14:51,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-16 03:14:51,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-10-16 03:14:51,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 29 states have (on average 1.2413793103448276) internal successors, (36), 29 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:51,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2021-10-16 03:14:51,064 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 18 [2021-10-16 03:14:51,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:14:51,064 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2021-10-16 03:14:51,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:51,065 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2021-10-16 03:14:51,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-16 03:14:51,066 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:14:51,066 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:14:51,084 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-10-16 03:14:51,280 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:14:51,280 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:14:51,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:14:51,281 INFO L82 PathProgramCache]: Analyzing trace with hash -356824031, now seen corresponding path program 1 times [2021-10-16 03:14:51,281 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:14:51,281 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213975288] [2021-10-16 03:14:51,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:14:51,282 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:14:51,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:14:51,283 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:14:51,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-10-16 03:14:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:14:51,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-16 03:14:51,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:14:51,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:51,516 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:14:51,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:51,645 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:14:51,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213975288] [2021-10-16 03:14:51,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213975288] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:14:51,646 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:14:51,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2021-10-16 03:14:51,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624918124] [2021-10-16 03:14:51,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-16 03:14:51,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:14:51,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-16 03:14:51,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-10-16 03:14:51,648 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:51,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:14:51,770 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2021-10-16 03:14:51,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-16 03:14:51,771 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-16 03:14:51,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:14:51,772 INFO L225 Difference]: With dead ends: 42 [2021-10-16 03:14:51,772 INFO L226 Difference]: Without dead ends: 39 [2021-10-16 03:14:51,773 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 122.7ms TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2021-10-16 03:14:51,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-16 03:14:51,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2021-10-16 03:14:51,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:51,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2021-10-16 03:14:51,783 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2021-10-16 03:14:51,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:14:51,783 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2021-10-16 03:14:51,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:51,784 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2021-10-16 03:14:51,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-16 03:14:51,785 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:14:51,785 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-16 03:14:51,807 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-10-16 03:14:51,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:14:51,998 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:14:51,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:14:51,999 INFO L82 PathProgramCache]: Analyzing trace with hash -208358251, now seen corresponding path program 1 times [2021-10-16 03:14:51,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:14:52,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878139327] [2021-10-16 03:14:52,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:14:52,000 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:14:52,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:14:52,002 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:14:52,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-10-16 03:14:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-16 03:14:52,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-16 03:14:52,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-16 03:14:52,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:52,336 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-16 03:14:52,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-16 03:14:52,572 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-16 03:14:52,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878139327] [2021-10-16 03:14:52,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878139327] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-16 03:14:52,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-16 03:14:52,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-10-16 03:14:52,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479000256] [2021-10-16 03:14:52,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-16 03:14:52,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-16 03:14:52,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-16 03:14:52,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-16 03:14:52,576 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:52,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-16 03:14:52,674 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2021-10-16 03:14:52,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-16 03:14:52,679 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-10-16 03:14:52,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-16 03:14:52,680 INFO L225 Difference]: With dead ends: 45 [2021-10-16 03:14:52,680 INFO L226 Difference]: Without dead ends: 27 [2021-10-16 03:14:52,681 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 122.8ms TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-16 03:14:52,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-10-16 03:14:52,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-10-16 03:14:52,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.0769230769230769) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:52,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-10-16 03:14:52,692 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 19 [2021-10-16 03:14:52,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-16 03:14:52,693 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-10-16 03:14:52,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-16 03:14:52,694 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-10-16 03:14:52,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-16 03:14:52,695 INFO L504 BasicCegarLoop]: Found error trace [2021-10-16 03:14:52,695 INFO L512 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] [2021-10-16 03:14:52,718 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-10-16 03:14:52,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:14:52,910 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-16 03:14:52,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-16 03:14:52,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1524231306, now seen corresponding path program 1 times [2021-10-16 03:14:52,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-16 03:14:52,911 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244994613] [2021-10-16 03:14:52,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-16 03:14:52,912 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-16 03:14:52,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat [2021-10-16 03:14:52,913 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-16 03:14:52,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-10-16 03:14:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:14:53,164 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-16 03:14:53,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-16 03:14:53,364 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-16 03:14:53,364 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-16 03:14:53,365 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-16 03:14:53,416 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-10-16 03:14:53,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/mathsat -unsat_core_generation=3 [2021-10-16 03:14:53,597 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-16 03:14:53,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 03:14:53 BoogieIcfgContainer [2021-10-16 03:14:53,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-16 03:14:53,683 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-16 03:14:53,683 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-16 03:14:53,684 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-16 03:14:53,684 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 03:14:47" (3/4) ... [2021-10-16 03:14:53,687 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-16 03:14:53,786 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/witness.graphml [2021-10-16 03:14:53,793 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-16 03:14:53,795 INFO L168 Benchmark]: Toolchain (without parser) took 7345.40 ms. Allocated memory was 79.7 MB in the beginning and 107.0 MB in the end (delta: 27.3 MB). Free memory was 45.3 MB in the beginning and 71.3 MB in the end (delta: -26.1 MB). Peak memory consumption was 3.4 MB. Max. memory is 16.1 GB. [2021-10-16 03:14:53,796 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 79.7 MB. Free memory was 61.7 MB in the beginning and 61.7 MB in the end (delta: 69.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:14:53,797 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.32 ms. Allocated memory is still 79.7 MB. Free memory was 45.1 MB in the beginning and 62.8 MB in the end (delta: -17.8 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2021-10-16 03:14:53,798 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.85 ms. Allocated memory is still 79.7 MB. Free memory was 62.8 MB in the beginning and 61.0 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:14:53,799 INFO L168 Benchmark]: Boogie Preprocessor took 88.23 ms. Allocated memory is still 79.7 MB. Free memory was 60.9 MB in the beginning and 59.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-16 03:14:53,799 INFO L168 Benchmark]: RCFGBuilder took 474.55 ms. Allocated memory is still 79.7 MB. Free memory was 59.2 MB in the beginning and 45.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-16 03:14:53,800 INFO L168 Benchmark]: TraceAbstraction took 6179.82 ms. Allocated memory was 79.7 MB in the beginning and 107.0 MB in the end (delta: 27.3 MB). Free memory was 44.9 MB in the beginning and 74.5 MB in the end (delta: -29.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-16 03:14:53,800 INFO L168 Benchmark]: Witness Printer took 110.01 ms. Allocated memory is still 107.0 MB. Free memory was 74.5 MB in the beginning and 71.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-16 03:14:53,803 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 79.7 MB. Free memory was 61.7 MB in the beginning and 61.7 MB in the end (delta: 69.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 405.32 ms. Allocated memory is still 79.7 MB. Free memory was 45.1 MB in the beginning and 62.8 MB in the end (delta: -17.8 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.85 ms. Allocated memory is still 79.7 MB. Free memory was 62.8 MB in the beginning and 61.0 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 88.23 ms. Allocated memory is still 79.7 MB. Free memory was 60.9 MB in the beginning and 59.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 474.55 ms. Allocated memory is still 79.7 MB. Free memory was 59.2 MB in the beginning and 45.3 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6179.82 ms. Allocated memory was 79.7 MB in the beginning and 107.0 MB in the end (delta: 27.3 MB). Free memory was 44.9 MB in the beginning and 74.5 MB in the end (delta: -29.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 110.01 ms. Allocated memory is still 107.0 MB. Free memory was 74.5 MB in the beginning and 71.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 82]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L76] double x = -0.0; [L77] double y = 0.0; [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L32] return 2; [L48] COND FALSE !(__fpclassify_double(x) == 0) [L21] __uint32_t msw, lsw; [L24] ieee_double_shape_type ew_u; [L25] ew_u.value = (x) [L26] EXPR ew_u.parts.msw [L26] (msw) = ew_u.parts.msw [L27] EXPR ew_u.parts.lsw [L27] (lsw) = ew_u.parts.lsw [L30-L31] COND TRUE (msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000) [L32] return 2; [L50] COND FALSE !(__fpclassify_double(y) == 0) [L53] EXPR x < y ? x : y [L53] return x < y ? x : y; [L78] double res = fmin_double(x, y); [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L57] __uint32_t msw; [L60] ieee_double_shape_type gh_u; [L61] gh_u.value = (x) [L62] EXPR gh_u.parts.msw [L62] (msw) = gh_u.parts.msw [L65] return (msw & 0x80000000) != 0; [L81] EXPR res == -0.0 && __signbit_double(res) == 1 [L81] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L82] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6014.5ms, OverallIterations: 8, TraceHistogramMax: 1, EmptinessCheckTime: 25.0ms, AutomataDifference: 793.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 12.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 234 SDtfs, 249 SDslu, 387 SDs, 0 SdLazy, 128 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 355.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 209 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 466.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 33, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 80.1ms AutomataMinimizationTime, 7 MinimizatonAttempts, 61 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 104.3ms SsaConstructionTime, 467.6ms SatisfiabilityAnalysisTime, 1963.2ms InterpolantComputationTime, 128 NumberOfCodeBlocks, 128 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 198 ConstructedInterpolants, 15 QuantifiedInterpolants, 666 SizeOfPredicates, 27 NumberOfNonLiveVariables, 423 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! [2021-10-16 03:14:53,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2d844272-19be-4936-bdfb-b08015d07ced/bin/utaipan-mTDlp9Zugs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...