./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF --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 cc6c31757d65ac3409144284524de01d782484107762f8e5c588ca3f4aed3437 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:33:48,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:33:48,944 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:33:48,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:33:48,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:33:48,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:33:48,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:33:48,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:33:48,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:33:48,994 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:33:48,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:33:48,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:33:48,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:33:48,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:33:49,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:33:49,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:33:49,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:33:49,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:33:49,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:33:49,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:33:49,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:33:49,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:33:49,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:33:49,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:33:49,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:33:49,051 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:33:49,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:33:49,053 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:33:49,053 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:33:49,054 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:33:49,055 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:33:49,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:33:49,057 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:33:49,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:33:49,059 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:33:49,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:33:49,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:33:49,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:33:49,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:33:49,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:33:49,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:33:49,072 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:33:49,098 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:33:49,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:33:49,099 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:33:49,100 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:33:49,100 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:33:49,100 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:33:49,100 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:33:49,100 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:33:49,101 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:33:49,101 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:33:49,101 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:33:49,101 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:33:49,101 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:33:49,102 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:33:49,102 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:33:49,102 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:33:49,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:33:49,103 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:33:49,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:33:49,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:33:49,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:33:49,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:33:49,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:33:49,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:33:49,104 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:33:49,109 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:33:49,109 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:33:49,109 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:33:49,109 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:33:49,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:33:49,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:33:49,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:33:49,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:33:49,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:33:49,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:33:49,113 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:33:49,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:33:49,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:33:49,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:33:49,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:33:49,114 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_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc6c31757d65ac3409144284524de01d782484107762f8e5c588ca3f4aed3437 [2021-11-12 23:33:49,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:33:49,454 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:33:49,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:33:49,459 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:33:49,460 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:33:49,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c [2021-11-12 23:33:49,527 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/data/5d2bfd916/4fb73458d09f489788819eb16ff790ee/FLAGac72a1fdd [2021-11-12 23:33:50,012 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:33:50,012 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c [2021-11-12 23:33:50,018 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/data/5d2bfd916/4fb73458d09f489788819eb16ff790ee/FLAGac72a1fdd [2021-11-12 23:33:50,377 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/data/5d2bfd916/4fb73458d09f489788819eb16ff790ee [2021-11-12 23:33:50,380 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:33:50,381 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:33:50,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:33:50,383 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:33:50,387 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:33:50,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:33:50" (1/1) ... [2021-11-12 23:33:50,389 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b8a1569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:50, skipping insertion in model container [2021-11-12 23:33:50,389 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:33:50" (1/1) ... [2021-11-12 23:33:50,397 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:33:50,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:33:50,595 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_28f254ee-cf24-47c9-8bec-88b8ca54faba/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c[538,551] [2021-11-12 23:33:50,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:33:50,619 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:33:50,629 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_28f254ee-cf24-47c9-8bec-88b8ca54faba/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c[538,551] [2021-11-12 23:33:50,633 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:33:50,645 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:33:50,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:50 WrapperNode [2021-11-12 23:33:50,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:33:50,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:33:50,647 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:33:50,647 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:33:50,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:50" (1/1) ... [2021-11-12 23:33:50,660 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:50" (1/1) ... [2021-11-12 23:33:50,680 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:33:50,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:33:50,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:33:50,682 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:33:50,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:50" (1/1) ... [2021-11-12 23:33:50,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:50" (1/1) ... [2021-11-12 23:33:50,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:50" (1/1) ... [2021-11-12 23:33:50,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:50" (1/1) ... [2021-11-12 23:33:50,699 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:50" (1/1) ... [2021-11-12 23:33:50,704 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:50" (1/1) ... [2021-11-12 23:33:50,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:50" (1/1) ... [2021-11-12 23:33:50,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:33:50,709 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:33:50,709 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:33:50,709 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:33:50,710 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:50" (1/1) ... [2021-11-12 23:33:50,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:33:50,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:33:50,746 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:33:50,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:33:50,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:33:50,809 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:33:50,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:33:50,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:33:51,061 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:33:51,061 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:33:51,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:33:51 BoogieIcfgContainer [2021-11-12 23:33:51,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:33:51,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:33:51,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:33:51,073 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:33:51,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:33:50" (1/3) ... [2021-11-12 23:33:51,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360e3906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:33:51, skipping insertion in model container [2021-11-12 23:33:51,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:50" (2/3) ... [2021-11-12 23:33:51,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@360e3906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:33:51, skipping insertion in model container [2021-11-12 23:33:51,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:33:51" (3/3) ... [2021-11-12 23:33:51,081 INFO L111 eAbstractionObserver]: Analyzing ICFG loop1-2.c [2021-11-12 23:33:51,087 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:33:51,087 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:33:51,162 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:33:51,173 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, mAutomataTypeConcurrency=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 [2021-11-12 23:33:51,173 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:33:51,202 INFO L276 IsEmpty]: Start isEmpty. Operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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) [2021-11-12 23:33:51,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-12 23:33:51,207 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:33:51,207 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-12 23:33:51,208 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:33:51,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:33:51,217 INFO L85 PathProgramCache]: Analyzing trace with hash 62074611, now seen corresponding path program 1 times [2021-11-12 23:33:51,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:33:51,224 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215963774] [2021-11-12 23:33:51,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:33:51,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:33:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:33:51,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:33:51,370 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:33:51,370 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215963774] [2021-11-12 23:33:51,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215963774] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:33:51,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:33:51,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-12 23:33:51,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453751340] [2021-11-12 23:33:51,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:33:51,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:33:51,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:33:51,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:33:51,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:33:51,409 INFO L87 Difference]: Start difference. First operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 8 states have internal predecessors, (11), 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 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-12 23:33:51,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:33:51,431 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2021-11-12 23:33:51,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:33:51,434 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2021-11-12 23:33:51,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:33:51,443 INFO L225 Difference]: With dead ends: 15 [2021-11-12 23:33:51,443 INFO L226 Difference]: Without dead ends: 7 [2021-11-12 23:33:51,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:33:51,451 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.33ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.08ms IncrementalHoareTripleChecker+Time [2021-11-12 23:33:51,453 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 2 Unknown, 0 Unchecked, 0.33ms Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 8.08ms Time] [2021-11-12 23:33:51,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-12 23:33:51,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-12 23:33:51,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2021-11-12 23:33:51,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2021-11-12 23:33:51,489 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2021-11-12 23:33:51,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:33:51,490 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2021-11-12 23:33:51,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 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) [2021-11-12 23:33:51,490 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2021-11-12 23:33:51,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 23:33:51,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:33:51,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 23:33:51,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:33:51,492 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:33:51,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:33:51,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1900119729, now seen corresponding path program 1 times [2021-11-12 23:33:51,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:33:51,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3166335] [2021-11-12 23:33:51,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:33:51,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:33:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:33:51,528 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:33:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:33:51,577 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-12 23:33:51,578 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:33:51,579 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:33:51,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 23:33:51,587 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-12 23:33:51,590 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:33:51,645 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:33:51 BoogieIcfgContainer [2021-11-12 23:33:51,645 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:33:51,646 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:33:51,646 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:33:51,647 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:33:51,647 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:33:51" (3/4) ... [2021-11-12 23:33:51,650 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-12 23:33:51,650 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:33:51,651 INFO L158 Benchmark]: Toolchain (without parser) took 1269.70ms. Allocated memory is still 113.2MB. Free memory was 73.8MB in the beginning and 51.0MB in the end (delta: 22.7MB). Peak memory consumption was 20.4MB. Max. memory is 16.1GB. [2021-11-12 23:33:51,651 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory is still 90.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:33:51,652 INFO L158 Benchmark]: CACSL2BoogieTranslator took 263.12ms. Allocated memory is still 113.2MB. Free memory was 73.6MB in the beginning and 87.9MB in the end (delta: -14.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:33:51,652 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.99ms. Allocated memory is still 113.2MB. Free memory was 87.9MB in the beginning and 86.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:33:51,653 INFO L158 Benchmark]: Boogie Preprocessor took 25.99ms. Allocated memory is still 113.2MB. Free memory was 86.6MB in the beginning and 85.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:33:51,654 INFO L158 Benchmark]: RCFGBuilder took 355.94ms. Allocated memory is still 113.2MB. Free memory was 85.5MB in the beginning and 75.5MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:33:51,655 INFO L158 Benchmark]: TraceAbstraction took 576.88ms. Allocated memory is still 113.2MB. Free memory was 75.0MB in the beginning and 51.5MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2021-11-12 23:33:51,655 INFO L158 Benchmark]: Witness Printer took 4.12ms. Allocated memory is still 113.2MB. Free memory is still 51.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:33:51,659 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 113.2MB. Free memory is still 90.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 263.12ms. Allocated memory is still 113.2MB. Free memory was 73.6MB in the beginning and 87.9MB in the end (delta: -14.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.99ms. Allocated memory is still 113.2MB. Free memory was 87.9MB in the beginning and 86.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 25.99ms. Allocated memory is still 113.2MB. Free memory was 86.6MB in the beginning and 85.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 355.94ms. Allocated memory is still 113.2MB. Free memory was 85.5MB in the beginning and 75.5MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 576.88ms. Allocated memory is still 113.2MB. Free memory was 75.0MB in the beginning and 51.5MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 4.12ms. Allocated memory is still 113.2MB. Free memory is still 51.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 37, overapproximation of someBinaryArithmeticFLOAToperation at line 29. Possible FailurePath: [L20] float x = __VERIFIER_nondet_float() ; [L21] float exp = 1.0 ; [L22] float term = 1.0 ; [L23] unsigned int count = 1 ; [L24] float result = 2*(1/(1-x)) ; [L25] int temp ; VAL [count=1, exp=1, term=1] [L27] COND TRUE 1 [L29] term = term * (x/count) [L30] exp = exp + term [L31] count++ [L33] temp = __VERIFIER_nondet_int() [L34] COND TRUE temp ==0 VAL [count=2, temp=0] [L37] CALL __VERIFIER_assert( result >= exp ) [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L14] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 8.08ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 6.57ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2 IncrementalHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 7 mSDtfsCounter, 2 mSolverCounterSat, 0.33ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 4 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 [2021-11-12 23:33:51,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF --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 cc6c31757d65ac3409144284524de01d782484107762f8e5c588ca3f4aed3437 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:33:54,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:33:54,406 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:33:54,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:33:54,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:33:54,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:33:54,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:33:54,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:33:54,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:33:54,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:33:54,460 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:33:54,461 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:33:54,462 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:33:54,463 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:33:54,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:33:54,467 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:33:54,468 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:33:54,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:33:54,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:33:54,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:33:54,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:33:54,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:33:54,494 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:33:54,496 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:33:54,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:33:54,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:33:54,505 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:33:54,510 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:33:54,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:33:54,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:33:54,515 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:33:54,516 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:33:54,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:33:54,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:33:54,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:33:54,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:33:54,522 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:33:54,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:33:54,523 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:33:54,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:33:54,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:33:54,531 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:33:54,578 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:33:54,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:33:54,580 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:33:54,580 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:33:54,580 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:33:54,581 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:33:54,581 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:33:54,581 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:33:54,581 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:33:54,582 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:33:54,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:33:54,584 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:33:54,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:33:54,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:33:54,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:33:54,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:33:54,585 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:33:54,586 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:33:54,586 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:33:54,586 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:33:54,586 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:33:54,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:33:54,587 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:33:54,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:33:54,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:33:54,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:33:54,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:33:54,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:33:54,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:33:54,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:33:54,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:33:54,589 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:33:54,589 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:33:54,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:33:54,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:33:54,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:33:54,591 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_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cc6c31757d65ac3409144284524de01d782484107762f8e5c588ca3f4aed3437 [2021-11-12 23:33:54,962 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:33:54,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:33:54,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:33:54,993 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:33:54,994 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:33:54,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c [2021-11-12 23:33:55,066 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/data/e2565fb2f/164dcc5e252e49dcb2bc253d655712f8/FLAG275a5619b [2021-11-12 23:33:55,559 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:33:55,560 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c [2021-11-12 23:33:55,567 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/data/e2565fb2f/164dcc5e252e49dcb2bc253d655712f8/FLAG275a5619b [2021-11-12 23:33:55,940 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/data/e2565fb2f/164dcc5e252e49dcb2bc253d655712f8 [2021-11-12 23:33:55,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:33:55,947 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:33:55,950 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:33:55,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:33:55,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:33:55,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:33:55" (1/1) ... [2021-11-12 23:33:55,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@663ca54d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:55, skipping insertion in model container [2021-11-12 23:33:55,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:33:55" (1/1) ... [2021-11-12 23:33:55,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:33:55,979 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:33:56,196 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_28f254ee-cf24-47c9-8bec-88b8ca54faba/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c[538,551] [2021-11-12 23:33:56,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:33:56,222 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:33:56,252 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_28f254ee-cf24-47c9-8bec-88b8ca54faba/sv-benchmarks/c/loop-floats-scientific-comp/loop1-2.c[538,551] [2021-11-12 23:33:56,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:33:56,298 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:33:56,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:56 WrapperNode [2021-11-12 23:33:56,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:33:56,301 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:33:56,301 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:33:56,301 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:33:56,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:56" (1/1) ... [2021-11-12 23:33:56,321 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:56" (1/1) ... [2021-11-12 23:33:56,341 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:33:56,341 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:33:56,342 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:33:56,342 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:33:56,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:56" (1/1) ... [2021-11-12 23:33:56,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:56" (1/1) ... [2021-11-12 23:33:56,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:56" (1/1) ... [2021-11-12 23:33:56,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:56" (1/1) ... [2021-11-12 23:33:56,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:56" (1/1) ... [2021-11-12 23:33:56,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:56" (1/1) ... [2021-11-12 23:33:56,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:56" (1/1) ... [2021-11-12 23:33:56,394 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:33:56,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:33:56,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:33:56,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:33:56,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:56" (1/1) ... [2021-11-12 23:33:56,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:33:56,417 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:33:56,434 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:33:56,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:33:56,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:33:56,487 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:33:56,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:33:56,488 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:34:00,638 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:34:00,639 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-12 23:34:00,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:34:00 BoogieIcfgContainer [2021-11-12 23:34:00,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:34:00,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:34:00,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:34:00,648 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:34:00,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:33:55" (1/3) ... [2021-11-12 23:34:00,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32fd74cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:34:00, skipping insertion in model container [2021-11-12 23:34:00,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:33:56" (2/3) ... [2021-11-12 23:34:00,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32fd74cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:34:00, skipping insertion in model container [2021-11-12 23:34:00,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:34:00" (3/3) ... [2021-11-12 23:34:00,652 INFO L111 eAbstractionObserver]: Analyzing ICFG loop1-2.c [2021-11-12 23:34:00,659 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:34:00,659 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-12 23:34:00,722 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:34:00,731 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, mAutomataTypeConcurrency=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 [2021-11-12 23:34:00,731 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-12 23:34:00,746 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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) [2021-11-12 23:34:00,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-12 23:34:00,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:34:00,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-12 23:34:00,753 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:34:00,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:34:00,760 INFO L85 PathProgramCache]: Analyzing trace with hash 889906919, now seen corresponding path program 1 times [2021-11-12 23:34:00,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:34:00,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2035290379] [2021-11-12 23:34:00,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:34:00,775 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:34:00,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:34:00,779 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:34:00,816 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:34:01,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:34:01,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:34:01,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:34:01,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:01,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:34:01,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:34:01,189 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:34:01,190 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2035290379] [2021-11-12 23:34:01,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2035290379] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:34:01,191 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:34:01,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:34:01,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10641865] [2021-11-12 23:34:01,194 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:34:01,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:34:01,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:34:01,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:34:01,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:34:01,228 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.5) internal successors, (15), 11 states have internal predecessors, (15), 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 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-12 23:34:01,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:34:01,237 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-11-12 23:34:01,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:34:01,240 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2021-11-12 23:34:01,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:34:01,245 INFO L225 Difference]: With dead ends: 20 [2021-11-12 23:34:01,246 INFO L226 Difference]: Without dead ends: 8 [2021-11-12 23:34:01,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:34:01,252 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.30ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:34:01,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.30ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:34:01,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-11-12 23:34:01,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-11-12 23:34:01,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 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) [2021-11-12 23:34:01,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-11-12 23:34:01,283 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-11-12 23:34:01,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:34:01,284 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-11-12 23:34:01,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-11-12 23:34:01,284 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-11-12 23:34:01,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-12 23:34:01,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:34:01,285 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:34:01,304 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:34:01,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:34:01,488 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:34:01,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:34:01,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1810664400, now seen corresponding path program 1 times [2021-11-12 23:34:01,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:34:01,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300412772] [2021-11-12 23:34:01,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:34:01,490 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:34:01,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:34:01,491 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:34:01,492 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:34:02,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:34:02,096 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-12 23:34:02,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-12 23:34:02,660 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-12 23:34:02,661 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-12 23:34:02,663 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-11-12 23:34:02,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:34:02,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:34:02,868 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-12 23:34:02,871 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-12 23:34:02,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 11:34:02 BoogieIcfgContainer [2021-11-12 23:34:02,904 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-12 23:34:02,906 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-12 23:34:02,906 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-12 23:34:02,907 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-12 23:34:02,907 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:34:00" (3/4) ... [2021-11-12 23:34:02,909 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-12 23:34:02,972 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/witness.graphml [2021-11-12 23:34:02,972 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-12 23:34:02,973 INFO L158 Benchmark]: Toolchain (without parser) took 7025.91ms. Allocated memory was 50.3MB in the beginning and 65.0MB in the end (delta: 14.7MB). Free memory was 26.5MB in the beginning and 40.0MB in the end (delta: -13.5MB). Peak memory consumption was 1.8MB. Max. memory is 16.1GB. [2021-11-12 23:34:02,973 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 50.3MB. Free memory was 30.4MB in the beginning and 30.4MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:34:02,974 INFO L158 Benchmark]: CACSL2BoogieTranslator took 350.24ms. Allocated memory was 50.3MB in the beginning and 65.0MB in the end (delta: 14.7MB). Free memory was 26.4MB in the beginning and 47.2MB in the end (delta: -20.8MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. [2021-11-12 23:34:02,974 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.14ms. Allocated memory is still 65.0MB. Free memory was 47.0MB in the beginning and 45.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:34:02,975 INFO L158 Benchmark]: Boogie Preprocessor took 52.99ms. Allocated memory is still 65.0MB. Free memory was 45.5MB in the beginning and 44.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:34:02,975 INFO L158 Benchmark]: RCFGBuilder took 4246.59ms. Allocated memory is still 65.0MB. Free memory was 44.3MB in the beginning and 35.0MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-12 23:34:02,976 INFO L158 Benchmark]: TraceAbstraction took 2261.11ms. Allocated memory is still 65.0MB. Free memory was 34.5MB in the beginning and 41.9MB in the end (delta: -7.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:34:02,976 INFO L158 Benchmark]: Witness Printer took 66.12ms. Allocated memory is still 65.0MB. Free memory was 41.9MB in the beginning and 40.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-12 23:34:02,989 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 50.3MB. Free memory was 30.4MB in the beginning and 30.4MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 350.24ms. Allocated memory was 50.3MB in the beginning and 65.0MB in the end (delta: 14.7MB). Free memory was 26.4MB in the beginning and 47.2MB in the end (delta: -20.8MB). Peak memory consumption was 5.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.14ms. Allocated memory is still 65.0MB. Free memory was 47.0MB in the beginning and 45.7MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 52.99ms. Allocated memory is still 65.0MB. Free memory was 45.5MB in the beginning and 44.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 4246.59ms. Allocated memory is still 65.0MB. Free memory was 44.3MB in the beginning and 35.0MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2261.11ms. Allocated memory is still 65.0MB. Free memory was 34.5MB in the beginning and 41.9MB in the end (delta: -7.4MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 66.12ms. Allocated memory is still 65.0MB. Free memory was 41.9MB in the beginning and 40.0MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L20] float x = __VERIFIER_nondet_float() ; [L21] float exp = 1.0 ; [L22] float term = 1.0 ; [L23] unsigned int count = 1 ; [L24] float result = 2*(1/(1-x)) ; [L25] int temp ; VAL [count=1, exp=1.0, result=-2.0, term=1.0, x=2.0] [L27] COND TRUE 1 [L29] term = term * (x/count) [L30] exp = exp + term [L31] count++ [L33] temp = __VERIFIER_nondet_int() [L34] COND TRUE temp ==0 VAL [count=2, exp=3.0, result=-2.0, temp=0, term=2.0, x=2.0] [L37] CALL __VERIFIER_assert( result >= exp ) [L14] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L14] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.00ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.00ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 12 mSDtfsCounter, 0 mSolverCounterSat, 0.30ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 31 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2021-11-12 23:34:03,050 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_28f254ee-cf24-47c9-8bec-88b8ca54faba/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE