./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_1092c.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1092c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0 --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 2980b1b16ee9f15d1388d11184adc9254e71941c1199f3e0cffbe3b54529bc8f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 16:26:22,278 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:26:22,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:26:22,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:26:22,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:26:22,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:26:22,316 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:26:22,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:26:22,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:26:22,328 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:26:22,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:26:22,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:26:22,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:26:22,334 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:26:22,339 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:26:22,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:26:22,344 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:26:22,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:26:22,346 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:26:22,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:26:22,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:26:22,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:26:22,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:26:22,356 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:26:22,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:26:22,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:26:22,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:26:22,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:26:22,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:26:22,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:26:22,373 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:26:22,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:26:22,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:26:22,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:26:22,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:26:22,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:26:22,379 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:26:22,379 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:26:22,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:26:22,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:26:22,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:26:22,381 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 16:26:22,415 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:26:22,415 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:26:22,416 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:26:22,416 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:26:22,416 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:26:22,417 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:26:22,417 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:26:22,417 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:26:22,417 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:26:22,417 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:26:22,418 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:26:22,418 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:26:22,418 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:26:22,418 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:26:22,419 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:26:22,419 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:26:22,419 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:26:22,419 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:26:22,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:26:22,420 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:26:22,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:26:22,420 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:26:22,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:26:22,421 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:26:22,421 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:26:22,421 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:26:22,421 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:26:22,422 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:26:22,422 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:26:22,422 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:26:22,422 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:26:22,422 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:26:22,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:26:22,423 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:26:22,423 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:26:22,423 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:26:22,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:26:22,424 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:26:22,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:26:22,424 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:26:22,424 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:26:22,425 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2980b1b16ee9f15d1388d11184adc9254e71941c1199f3e0cffbe3b54529bc8f [2022-11-16 16:26:22,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:26:22,696 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:26:22,698 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:26:22,700 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:26:22,700 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:26:22,701 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/float-newlib/float_req_bl_1092c.c [2022-11-16 16:26:22,781 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/data/a2be6b266/5041a49a13f541ccaa69327060fccccd/FLAG3953e5d4d [2022-11-16 16:26:23,247 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:26:23,247 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/sv-benchmarks/c/float-newlib/float_req_bl_1092c.c [2022-11-16 16:26:23,257 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/data/a2be6b266/5041a49a13f541ccaa69327060fccccd/FLAG3953e5d4d [2022-11-16 16:26:23,629 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/data/a2be6b266/5041a49a13f541ccaa69327060fccccd [2022-11-16 16:26:23,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:26:23,632 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:26:23,637 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:26:23,637 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:26:23,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:26:23,641 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:26:23" (1/1) ... [2022-11-16 16:26:23,642 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363ad6f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:23, skipping insertion in model container [2022-11-16 16:26:23,642 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:26:23" (1/1) ... [2022-11-16 16:26:23,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:26:23,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:26:23,858 WARN L229 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_792a9046-81e0-4a35-98c5-d83cf55dc7d7/sv-benchmarks/c/float-newlib/float_req_bl_1092c.c[1788,1801] [2022-11-16 16:26:23,860 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:26:23,868 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:26:23,888 WARN L229 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_792a9046-81e0-4a35-98c5-d83cf55dc7d7/sv-benchmarks/c/float-newlib/float_req_bl_1092c.c[1788,1801] [2022-11-16 16:26:23,889 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:26:23,903 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:26:23,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:23 WrapperNode [2022-11-16 16:26:23,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:26:23,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:26:23,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:26:23,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:26:23,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:23" (1/1) ... [2022-11-16 16:26:23,922 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:23" (1/1) ... [2022-11-16 16:26:23,943 INFO L138 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 92 [2022-11-16 16:26:23,944 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:26:23,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:26:23,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:26:23,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:26:23,953 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:23" (1/1) ... [2022-11-16 16:26:23,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:23" (1/1) ... [2022-11-16 16:26:23,956 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:23" (1/1) ... [2022-11-16 16:26:23,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:23" (1/1) ... [2022-11-16 16:26:23,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:23" (1/1) ... [2022-11-16 16:26:23,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:23" (1/1) ... [2022-11-16 16:26:23,968 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:23" (1/1) ... [2022-11-16 16:26:23,970 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:23" (1/1) ... [2022-11-16 16:26:23,972 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:26:23,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:26:23,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:26:23,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:26:23,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:23" (1/1) ... [2022-11-16 16:26:23,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:26:23,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:26:24,016 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:26:24,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:26:24,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:26:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 16:26:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 16:26:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-16 16:26:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 16:26:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-11-16 16:26:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:26:24,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:26:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 16:26:24,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 16:26:24,128 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:26:24,130 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:26:24,325 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:26:24,408 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:26:24,408 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 16:26:24,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:26:24 BoogieIcfgContainer [2022-11-16 16:26:24,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:26:24,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:26:24,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:26:24,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:26:24,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:26:23" (1/3) ... [2022-11-16 16:26:24,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b4c8ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:26:24, skipping insertion in model container [2022-11-16 16:26:24,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:23" (2/3) ... [2022-11-16 16:26:24,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62b4c8ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:26:24, skipping insertion in model container [2022-11-16 16:26:24,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:26:24" (3/3) ... [2022-11-16 16:26:24,426 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092c.c [2022-11-16 16:26:24,456 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:26:24,457 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 16:26:24,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:26:24,592 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@20293c19, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:26:24,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 16:26:24,605 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 18 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) [2022-11-16 16:26:24,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-16 16:26:24,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:26:24,615 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:26:24,616 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:26:24,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:26:24,631 INFO L85 PathProgramCache]: Analyzing trace with hash 391450360, now seen corresponding path program 1 times [2022-11-16 16:26:24,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:26:24,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332637019] [2022-11-16 16:26:24,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:26:24,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:26:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:26:24,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:26:24,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:26:24,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332637019] [2022-11-16 16:26:24,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332637019] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:26:24,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:26:24,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:26:24,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151919095] [2022-11-16 16:26:24,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:26:24,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 16:26:24,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:26:24,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 16:26:24,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 16:26:24,912 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.6470588235294117) internal successors, (28), 18 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) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-16 16:26:24,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:26:24,968 INFO L93 Difference]: Finished difference Result 37 states and 55 transitions. [2022-11-16 16:26:24,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 16:26:24,971 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2022-11-16 16:26:24,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:26:24,980 INFO L225 Difference]: With dead ends: 37 [2022-11-16 16:26:24,980 INFO L226 Difference]: Without dead ends: 17 [2022-11-16 16:26:24,983 INFO L412 NwaCegarLoop]: 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 [2022-11-16 16:26:24,992 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:26:25,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 15 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:26:25,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2022-11-16 16:26:25,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2022-11-16 16:26:25,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.1875) internal successors, (19), 16 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) [2022-11-16 16:26:25,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2022-11-16 16:26:25,042 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 9 [2022-11-16 16:26:25,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:26:25,042 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2022-11-16 16:26:25,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) [2022-11-16 16:26:25,043 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2022-11-16 16:26:25,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 16:26:25,044 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:26:25,045 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:26:25,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 16:26:25,046 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:26:25,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:26:25,049 INFO L85 PathProgramCache]: Analyzing trace with hash 1669256746, now seen corresponding path program 1 times [2022-11-16 16:26:25,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:26:25,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831054124] [2022-11-16 16:26:25,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:26:25,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:26:25,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 16:26:25,179 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 16:26:25,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 16:26:25,288 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 16:26:25,289 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 16:26:25,290 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 16:26:25,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 16:26:25,300 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-16 16:26:25,304 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 16:26:25,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 04:26:25 BoogieIcfgContainer [2022-11-16 16:26:25,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 16:26:25,343 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 16:26:25,344 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 16:26:25,344 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 16:26:25,344 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:26:24" (3/4) ... [2022-11-16 16:26:25,347 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 16:26:25,348 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 16:26:25,349 INFO L158 Benchmark]: Toolchain (without parser) took 1716.08ms. Allocated memory is still 121.6MB. Free memory was 85.1MB in the beginning and 43.8MB in the end (delta: 41.3MB). Peak memory consumption was 39.1MB. Max. memory is 16.1GB. [2022-11-16 16:26:25,368 INFO L158 Benchmark]: CDTParser took 7.04ms. Allocated memory is still 121.6MB. Free memory was 94.0MB in the beginning and 101.5MB in the end (delta: -7.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:26:25,371 INFO L158 Benchmark]: CACSL2BoogieTranslator took 267.03ms. Allocated memory is still 121.6MB. Free memory was 85.0MB in the beginning and 95.7MB in the end (delta: -10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-16 16:26:25,373 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.70ms. Allocated memory is still 121.6MB. Free memory was 95.7MB in the beginning and 94.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:26:25,376 INFO L158 Benchmark]: Boogie Preprocessor took 27.50ms. Allocated memory is still 121.6MB. Free memory was 94.1MB in the beginning and 92.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:26:25,379 INFO L158 Benchmark]: RCFGBuilder took 438.44ms. Allocated memory is still 121.6MB. Free memory was 92.4MB in the beginning and 74.1MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-11-16 16:26:25,379 INFO L158 Benchmark]: TraceAbstraction took 927.80ms. Allocated memory is still 121.6MB. Free memory was 73.6MB in the beginning and 44.2MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. [2022-11-16 16:26:25,379 INFO L158 Benchmark]: Witness Printer took 4.43ms. Allocated memory is still 121.6MB. Free memory is still 43.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:26:25,384 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 7.04ms. Allocated memory is still 121.6MB. Free memory was 94.0MB in the beginning and 101.5MB in the end (delta: -7.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 267.03ms. Allocated memory is still 121.6MB. Free memory was 85.0MB in the beginning and 95.7MB in the end (delta: -10.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.70ms. Allocated memory is still 121.6MB. Free memory was 95.7MB in the beginning and 94.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 27.50ms. Allocated memory is still 121.6MB. Free memory was 94.1MB in the beginning and 92.4MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 438.44ms. Allocated memory is still 121.6MB. Free memory was 92.4MB in the beginning and 74.1MB in the end (delta: 18.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 927.80ms. Allocated memory is still 121.6MB. Free memory was 73.6MB in the beginning and 44.2MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.1GB. * Witness Printer took 4.43ms. Allocated memory is still 121.6MB. Free memory is still 43.8MB. 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: 83]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 66. Possible FailurePath: [L13] static const float huge_ceil = 1.0e30; [L78] float x = 1.0f / 0.0f; [L79] CALL, EXPR ceil_float(x) [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; VAL [\old(x)=1000000000000000000000000000011, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000011] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f VAL [\old(x)=1000000000000000000000000000011, huge_ceil=1000000000000000000000000000000, i=2139095040, i0=2139095040, j0=128, x=1000000000000000000000000000011] [L25] COND FALSE !(j0 < 23) [L45] COND TRUE !((ix) < 0x7f800000L) [L46] return x + x; VAL [\old(x)=1000000000000000000000000000011, \result=1000000000000000000000000000011, huge_ceil=1000000000000000000000000000000, i=2139095040, i0=2139095040, j0=128, x=1000000000000000000000000000011] [L79] RET, EXPR ceil_float(x) [L79] float res = ceil_float(x); [L82] CALL, EXPR isinf_float(res) [L60] __int32_t ix; VAL [\old(x)=1000000000000000000000000000011, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000011] [L62] ieee_float_shape_type gf_u; [L63] gf_u.value = (x) [L64] EXPR gf_u.word [L64] (ix) = gf_u.word [L66] ix &= 0x7fffffff [L67] return ((ix) == 0x7f800000L); [L82] RET, EXPR isinf_float(res) [L82] COND TRUE !isinf_float(res) [L83] reach_error() VAL [huge_ceil=1000000000000000000000000000000, res=1000000000000000000000000000011, x=1000000000000000000000000000011] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 6 IncrementalHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 15 mSDtfsCounter, 6 mSolverCounterSat, 0.0s 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=19occurred 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, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 8 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 [2022-11-16 16:26:25,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/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/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_1092c.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0 --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 2980b1b16ee9f15d1388d11184adc9254e71941c1199f3e0cffbe3b54529bc8f --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 16:26:27,655 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:26:27,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:26:27,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:26:27,675 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:26:27,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:26:27,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:26:27,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:26:27,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:26:27,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:26:27,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:26:27,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:26:27,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:26:27,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:26:27,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:26:27,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:26:27,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:26:27,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:26:27,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:26:27,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:26:27,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:26:27,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:26:27,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:26:27,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:26:27,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:26:27,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:26:27,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:26:27,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:26:27,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:26:27,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:26:27,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:26:27,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:26:27,707 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:26:27,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:26:27,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:26:27,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:26:27,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:26:27,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:26:27,711 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:26:27,712 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:26:27,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:26:27,713 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-16 16:26:27,761 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:26:27,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:26:27,762 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:26:27,762 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:26:27,762 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:26:27,763 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:26:27,763 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:26:27,763 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:26:27,764 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:26:27,764 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:26:27,764 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:26:27,764 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:26:27,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:26:27,765 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:26:27,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:26:27,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:26:27,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:26:27,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:26:27,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:26:27,771 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 16:26:27,773 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 16:26:27,774 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 16:26:27,774 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:26:27,774 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:26:27,775 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:26:27,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:26:27,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:26:27,775 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 16:26:27,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:26:27,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:26:27,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:26:27,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:26:27,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:26:27,778 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-16 16:26:27,778 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 16:26:27,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:26:27,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:26:27,779 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 16:26:27,780 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_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2980b1b16ee9f15d1388d11184adc9254e71941c1199f3e0cffbe3b54529bc8f [2022-11-16 16:26:28,160 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:26:28,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:26:28,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:26:28,187 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:26:28,188 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:26:28,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/float-newlib/float_req_bl_1092c.c [2022-11-16 16:26:28,256 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/data/1db04edf1/643fb798e8ab422081b5013fccfa8c24/FLAG7e7abac7c [2022-11-16 16:26:28,778 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:26:28,779 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/sv-benchmarks/c/float-newlib/float_req_bl_1092c.c [2022-11-16 16:26:28,785 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/data/1db04edf1/643fb798e8ab422081b5013fccfa8c24/FLAG7e7abac7c [2022-11-16 16:26:29,169 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/data/1db04edf1/643fb798e8ab422081b5013fccfa8c24 [2022-11-16 16:26:29,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:26:29,178 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:26:29,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:26:29,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:26:29,183 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:26:29,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:26:29" (1/1) ... [2022-11-16 16:26:29,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ae73584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:29, skipping insertion in model container [2022-11-16 16:26:29,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:26:29" (1/1) ... [2022-11-16 16:26:29,192 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:26:29,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:26:29,372 WARN L229 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_792a9046-81e0-4a35-98c5-d83cf55dc7d7/sv-benchmarks/c/float-newlib/float_req_bl_1092c.c[1788,1801] [2022-11-16 16:26:29,375 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:26:29,396 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:26:29,481 WARN L229 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_792a9046-81e0-4a35-98c5-d83cf55dc7d7/sv-benchmarks/c/float-newlib/float_req_bl_1092c.c[1788,1801] [2022-11-16 16:26:29,482 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:26:29,501 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:26:29,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:29 WrapperNode [2022-11-16 16:26:29,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:26:29,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:26:29,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:26:29,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:26:29,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:29" (1/1) ... [2022-11-16 16:26:29,529 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:29" (1/1) ... [2022-11-16 16:26:29,559 INFO L138 Inliner]: procedures = 19, calls = 21, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 92 [2022-11-16 16:26:29,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:26:29,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:26:29,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:26:29,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:26:29,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:29" (1/1) ... [2022-11-16 16:26:29,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:29" (1/1) ... [2022-11-16 16:26:29,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:29" (1/1) ... [2022-11-16 16:26:29,585 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:29" (1/1) ... [2022-11-16 16:26:29,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:29" (1/1) ... [2022-11-16 16:26:29,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:29" (1/1) ... [2022-11-16 16:26:29,614 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:29" (1/1) ... [2022-11-16 16:26:29,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:29" (1/1) ... [2022-11-16 16:26:29,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:26:29,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:26:29,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:26:29,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:26:29,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:29" (1/1) ... [2022-11-16 16:26:29,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:26:29,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:26:29,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:26:29,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:26:29,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:26:29,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 16:26:29,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 16:26:29,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-11-16 16:26:29,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-16 16:26:29,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:26:29,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:26:29,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2022-11-16 16:26:29,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-16 16:26:29,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 16:26:29,827 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:26:29,829 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:26:30,439 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:26:30,445 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:26:30,445 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-16 16:26:30,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:26:30 BoogieIcfgContainer [2022-11-16 16:26:30,447 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:26:30,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:26:30,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:26:30,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:26:30,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:26:29" (1/3) ... [2022-11-16 16:26:30,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7632d0ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:26:30, skipping insertion in model container [2022-11-16 16:26:30,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:26:29" (2/3) ... [2022-11-16 16:26:30,454 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7632d0ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:26:30, skipping insertion in model container [2022-11-16 16:26:30,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:26:30" (3/3) ... [2022-11-16 16:26:30,455 INFO L112 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092c.c [2022-11-16 16:26:30,475 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:26:30,475 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 16:26:30,527 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:26:30,533 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5655924c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:26:30,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 16:26:30,538 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 28 states have internal predecessors, (44), 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) [2022-11-16 16:26:30,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 16:26:30,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:26:30,545 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:26:30,548 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:26:30,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:26:30,556 INFO L85 PathProgramCache]: Analyzing trace with hash -2064187560, now seen corresponding path program 1 times [2022-11-16 16:26:30,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:26:30,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267066935] [2022-11-16 16:26:30,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:26:30,570 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:26:30,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:26:30,582 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:26:30,629 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-16 16:26:30,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:26:30,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-16 16:26:30,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:26:30,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:26:30,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:26:30,785 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:26:30,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267066935] [2022-11-16 16:26:30,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267066935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:26:30,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:26:30,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-16 16:26:30,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620420699] [2022-11-16 16:26:30,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:26:30,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-16 16:26:30,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:26:30,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-16 16:26:30,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 16:26:30,833 INFO L87 Difference]: Start difference. First operand has 29 states, 27 states have (on average 1.6296296296296295) internal successors, (44), 28 states have internal predecessors, (44), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2022-11-16 16:26:30,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:26:30,856 INFO L93 Difference]: Finished difference Result 56 states and 86 transitions. [2022-11-16 16:26:30,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-16 16:26:30,859 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2022-11-16 16:26:30,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:26:30,874 INFO L225 Difference]: With dead ends: 56 [2022-11-16 16:26:30,874 INFO L226 Difference]: Without dead ends: 26 [2022-11-16 16:26:30,878 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-16 16:26:30,882 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:26:30,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:26:30,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-16 16:26:30,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2022-11-16 16:26:30,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 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) [2022-11-16 16:26:30,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2022-11-16 16:26:30,925 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 12 [2022-11-16 16:26:30,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:26:30,926 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2022-11-16 16:26:30,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2022-11-16 16:26:30,927 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2022-11-16 16:26:30,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 16:26:30,927 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:26:30,927 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:26:30,941 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-11-16 16:26:31,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:26:31,142 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:26:31,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:26:31,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1026834198, now seen corresponding path program 1 times [2022-11-16 16:26:31,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:26:31,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1960993702] [2022-11-16 16:26:31,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:26:31,144 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:26:31,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:26:31,145 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:26:31,149 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-16 16:26:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:26:31,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-16 16:26:31,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:26:31,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:26:31,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:26:31,494 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:26:31,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1960993702] [2022-11-16 16:26:31,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1960993702] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:26:31,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:26:31,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 16:26:31,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491908123] [2022-11-16 16:26:31,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:26:31,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:26:31,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:26:31,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:26:31,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:26:31,498 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2022-11-16 16:26:31,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:26:31,512 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2022-11-16 16:26:31,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 16:26:31,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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 14 [2022-11-16 16:26:31,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:26:31,513 INFO L225 Difference]: With dead ends: 45 [2022-11-16 16:26:31,513 INFO L226 Difference]: Without dead ends: 37 [2022-11-16 16:26:31,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:26:31,515 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 24 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:26:31,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 99 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 25 Unchecked, 0.0s Time] [2022-11-16 16:26:31,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-11-16 16:26:31,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2022-11-16 16:26:31,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.32) internal successors, (33), 25 states have internal predecessors, (33), 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) [2022-11-16 16:26:31,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2022-11-16 16:26:31,525 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 14 [2022-11-16 16:26:31,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:26:31,540 INFO L495 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2022-11-16 16:26:31,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 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) [2022-11-16 16:26:31,541 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2022-11-16 16:26:31,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-16 16:26:31,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:26:31,542 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:26:31,554 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-16 16:26:31,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:26:31,747 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:26:31,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:26:31,748 INFO L85 PathProgramCache]: Analyzing trace with hash -217487572, now seen corresponding path program 1 times [2022-11-16 16:26:31,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:26:31,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126022519] [2022-11-16 16:26:31,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:26:31,749 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:26:31,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:26:31,750 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:26:31,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-16 16:26:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:26:31,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-16 16:26:31,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 16:26:32,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 16:26:32,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 16:26:32,137 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-16 16:26:32,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126022519] [2022-11-16 16:26:32,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126022519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:26:32,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:26:32,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 16:26:32,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633582325] [2022-11-16 16:26:32,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:26:32,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 16:26:32,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-16 16:26:32,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 16:26:32,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 16:26:32,140 INFO L87 Difference]: Start difference. First operand 26 states and 33 transitions. Second operand has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 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) [2022-11-16 16:26:32,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:26:32,821 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2022-11-16 16:26:32,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 16:26:32,822 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 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 14 [2022-11-16 16:26:32,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:26:32,823 INFO L225 Difference]: With dead ends: 34 [2022-11-16 16:26:32,823 INFO L226 Difference]: Without dead ends: 25 [2022-11-16 16:26:32,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-11-16 16:26:32,824 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 70 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-16 16:26:32,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 138 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-16 16:26:32,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-16 16:26:32,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-16 16:26:32,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.25) internal successors, (30), 24 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) [2022-11-16 16:26:32,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 30 transitions. [2022-11-16 16:26:32,828 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 30 transitions. Word has length 14 [2022-11-16 16:26:32,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:26:32,829 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 30 transitions. [2022-11-16 16:26:32,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 8 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) [2022-11-16 16:26:32,829 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 30 transitions. [2022-11-16 16:26:32,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-16 16:26:32,829 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:26:32,830 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:26:32,860 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-16 16:26:33,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:26:33,031 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:26:33,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:26:33,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1158240359, now seen corresponding path program 1 times [2022-11-16 16:26:33,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:26:33,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1678766555] [2022-11-16 16:26:33,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:26:33,032 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:26:33,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:26:33,034 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-16 16:26:33,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-16 16:26:33,201 ERROR L418 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Exception during sending of exit command (exit): Broken pipe [2022-11-16 16:26:33,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 139 [2022-11-16 16:26:33,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-11-16 16:26:33,402 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:91) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5) with exit command (exit)) Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:243) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:262) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:130) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:317) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:215) ... 30 more Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1465) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:658) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:383) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:239) ... 37 more [2022-11-16 16:26:33,405 INFO L158 Benchmark]: Toolchain (without parser) took 4227.24ms. Allocated memory was 73.4MB in the beginning and 90.2MB in the end (delta: 16.8MB). Free memory was 56.0MB in the beginning and 40.1MB in the end (delta: 15.9MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. [2022-11-16 16:26:33,406 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 73.4MB. Free memory was 54.5MB in the beginning and 54.5MB in the end (delta: 49.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:26:33,406 INFO L158 Benchmark]: CACSL2BoogieTranslator took 323.45ms. Allocated memory is still 73.4MB. Free memory was 55.7MB in the beginning and 56.5MB in the end (delta: -808.1kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 16:26:33,406 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.07ms. Allocated memory is still 73.4MB. Free memory was 56.5MB in the beginning and 54.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:26:33,407 INFO L158 Benchmark]: Boogie Preprocessor took 65.77ms. Allocated memory is still 73.4MB. Free memory was 54.6MB in the beginning and 53.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:26:33,407 INFO L158 Benchmark]: RCFGBuilder took 819.17ms. Allocated memory is still 73.4MB. Free memory was 53.0MB in the beginning and 39.7MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 16:26:33,408 INFO L158 Benchmark]: TraceAbstraction took 2955.51ms. Allocated memory was 73.4MB in the beginning and 90.2MB in the end (delta: 16.8MB). Free memory was 38.9MB in the beginning and 40.1MB in the end (delta: -1.2MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. [2022-11-16 16:26:33,412 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 73.4MB. Free memory was 54.5MB in the beginning and 54.5MB in the end (delta: 49.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 323.45ms. Allocated memory is still 73.4MB. Free memory was 55.7MB in the beginning and 56.5MB in the end (delta: -808.1kB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 57.07ms. Allocated memory is still 73.4MB. Free memory was 56.5MB in the beginning and 54.8MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 65.77ms. Allocated memory is still 73.4MB. Free memory was 54.6MB in the beginning and 53.0MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 819.17ms. Allocated memory is still 73.4MB. Free memory was 53.0MB in the beginning and 39.7MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2955.51ms. Allocated memory was 73.4MB in the beginning and 90.2MB in the end (delta: 16.8MB). Free memory was 38.9MB in the beginning and 40.1MB in the end (delta: -1.2MB). Peak memory consumption was 17.0MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5) with exit command (exit)) Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5) with exit command (exit)) Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:236) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-16 16:26:33,440 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_792a9046-81e0-4a35-98c5-d83cf55dc7d7/bin/utaipan-Xvt2sAort0/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5) with exit command (exit)) Received EOF on stdin. No stderr output.