./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/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_f668ed36-8ecf-4634-91fe-5f38168a30ac/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/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_f668ed36-8ecf-4634-91fe-5f38168a30ac/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 198a885d453136e0f485e10bae010eb2ed68236b2d57919bf162df9bdad27ee6 --- 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 16:14:19,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:14:19,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:14:19,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:14:19,219 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:14:19,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:14:19,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:14:19,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:14:19,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:14:19,236 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:14:19,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:14:19,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:14:19,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:14:19,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:14:19,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:14:19,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:14:19,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:14:19,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:14:19,264 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:14:19,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:14:19,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:14:19,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:14:19,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:14:19,276 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:14:19,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:14:19,288 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:14:19,289 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:14:19,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:14:19,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:14:19,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:14:19,294 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:14:19,295 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:14:19,297 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:14:19,298 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:14:19,300 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:14:19,300 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:14:19,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:14:19,301 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:14:19,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:14:19,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:14:19,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:14:19,312 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-16 16:14:19,365 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:14:19,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:14:19,366 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:14:19,366 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:14:19,367 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:14:19,367 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:14:19,367 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:14:19,368 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:14:19,368 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:14:19,368 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-16 16:14:19,368 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:14:19,369 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:14:19,369 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-16 16:14:19,369 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-16 16:14:19,369 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:14:19,370 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-16 16:14:19,370 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-16 16:14:19,370 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-16 16:14:19,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:14:19,371 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:14:19,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 16:14:19,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:14:19,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:14:19,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:14:19,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:14:19,373 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:14:19,373 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:14:19,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:14:19,373 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:14:19,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:14:19,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:14:19,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:14:19,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:14:19,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:14:19,375 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-16 16:14:19,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:14:19,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:14:19,376 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-16 16:14:19,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 16:14:19,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:14:19,377 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:14:19,377 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_f668ed36-8ecf-4634-91fe-5f38168a30ac/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 198a885d453136e0f485e10bae010eb2ed68236b2d57919bf162df9bdad27ee6 [2022-11-16 16:14:19,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:14:19,684 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:14:19,686 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:14:19,688 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:14:19,689 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:14:19,690 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c [2022-11-16 16:14:19,763 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/bin/utaipan-Xvt2sAort0/data/8d771f5f4/134dac3baf764431a834aef9369de3bf/FLAGb3d33fb4b [2022-11-16 16:14:20,300 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:14:20,301 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c [2022-11-16 16:14:20,308 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/bin/utaipan-Xvt2sAort0/data/8d771f5f4/134dac3baf764431a834aef9369de3bf/FLAGb3d33fb4b [2022-11-16 16:14:20,645 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/bin/utaipan-Xvt2sAort0/data/8d771f5f4/134dac3baf764431a834aef9369de3bf [2022-11-16 16:14:20,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:14:20,650 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:14:20,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:14:20,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:14:20,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:14:20,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:14:20" (1/1) ... [2022-11-16 16:14:20,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52aa8b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:20, skipping insertion in model container [2022-11-16 16:14:20,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:14:20" (1/1) ... [2022-11-16 16:14:20,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:14:20,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:14:20,899 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_f668ed36-8ecf-4634-91fe-5f38168a30ac/sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c[1306,1319] [2022-11-16 16:14:20,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:14:20,939 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:14:20,987 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_f668ed36-8ecf-4634-91fe-5f38168a30ac/sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c[1306,1319] [2022-11-16 16:14:20,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:14:21,021 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:14:21,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:21 WrapperNode [2022-11-16 16:14:21,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:14:21,024 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:14:21,024 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:14:21,024 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:14:21,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:21" (1/1) ... [2022-11-16 16:14:21,054 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:21" (1/1) ... [2022-11-16 16:14:21,090 INFO L138 Inliner]: procedures = 18, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 99 [2022-11-16 16:14:21,091 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:14:21,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:14:21,092 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:14:21,092 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:14:21,101 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:21" (1/1) ... [2022-11-16 16:14:21,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:21" (1/1) ... [2022-11-16 16:14:21,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:21" (1/1) ... [2022-11-16 16:14:21,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:21" (1/1) ... [2022-11-16 16:14:21,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:21" (1/1) ... [2022-11-16 16:14:21,119 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:21" (1/1) ... [2022-11-16 16:14:21,121 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:21" (1/1) ... [2022-11-16 16:14:21,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:21" (1/1) ... [2022-11-16 16:14:21,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:14:21,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:14:21,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:14:21,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:14:21,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:21" (1/1) ... [2022-11-16 16:14:21,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:14:21,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:14:21,171 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:14:21,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:14:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:14:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 16:14:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 16:14:21,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-16 16:14:21,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:14:21,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:14:21,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2022-11-16 16:14:21,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 16:14:21,305 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:14:21,307 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:14:21,460 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:14:21,479 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:14:21,479 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 16:14:21,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:14:21 BoogieIcfgContainer [2022-11-16 16:14:21,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:14:21,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:14:21,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:14:21,488 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:14:21,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:14:20" (1/3) ... [2022-11-16 16:14:21,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77902e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:14:21, skipping insertion in model container [2022-11-16 16:14:21,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:21" (2/3) ... [2022-11-16 16:14:21,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77902e9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:14:21, skipping insertion in model container [2022-11-16 16:14:21,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:14:21" (3/3) ... [2022-11-16 16:14:21,492 INFO L112 eAbstractionObserver]: Analyzing ICFG interpolation.c.p+cfa-reducer.c [2022-11-16 16:14:21,511 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:14:21,511 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 16:14:21,565 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:14:21,572 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;@54dff7a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:14:21,573 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 16:14:21,577 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 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 16:14:21,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 16:14:21,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:14:21,586 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:14:21,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:14:21,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:14:21,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1338621212, now seen corresponding path program 1 times [2022-11-16 16:14:21,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:14:21,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837020643] [2022-11-16 16:14:21,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:14:21,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:14:21,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:14:21,987 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 16:14:21,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:14:21,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837020643] [2022-11-16 16:14:21,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [837020643] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:14:21,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:14:21,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 16:14:21,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366771363] [2022-11-16 16:14:21,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:14:21,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 16:14:21,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:14:22,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 16:14:22,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 16:14:22,039 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.6) internal successors, (24), 16 states have internal predecessors, (24), 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 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:14:22,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:14:22,190 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2022-11-16 16:14:22,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 16:14:22,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 16:14:22,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:14:22,204 INFO L225 Difference]: With dead ends: 44 [2022-11-16 16:14:22,204 INFO L226 Difference]: Without dead ends: 26 [2022-11-16 16:14:22,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-16 16:14:22,212 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 31 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-16 16:14:22,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 66 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-16 16:14:22,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-11-16 16:14:22,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 15. [2022-11-16 16:14:22,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 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 16:14:22,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2022-11-16 16:14:22,259 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 19 transitions. Word has length 11 [2022-11-16 16:14:22,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:14:22,260 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 19 transitions. [2022-11-16 16:14:22,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:14:22,261 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 19 transitions. [2022-11-16 16:14:22,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-16 16:14:22,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:14:22,262 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:14:22,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 16:14:22,263 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:14:22,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:14:22,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1321610551, now seen corresponding path program 1 times [2022-11-16 16:14:22,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:14:22,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792553269] [2022-11-16 16:14:22,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:14:22,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:14:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 16:14:22,392 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 16:14:22,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-16 16:14:22,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792553269] [2022-11-16 16:14:22,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792553269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 16:14:22,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 16:14:22,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 16:14:22,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317703482] [2022-11-16 16:14:22,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 16:14:22,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 16:14:22,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-16 16:14:22,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 16:14:22,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:14:22,397 INFO L87 Difference]: Start difference. First operand 15 states and 19 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:14:22,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 16:14:22,421 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-11-16 16:14:22,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 16:14:22,422 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-16 16:14:22,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 16:14:22,423 INFO L225 Difference]: With dead ends: 33 [2022-11-16 16:14:22,423 INFO L226 Difference]: Without dead ends: 25 [2022-11-16 16:14:22,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 16:14:22,426 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 10 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 16:14:22,427 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 30 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 16:14:22,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-16 16:14:22,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 16. [2022-11-16 16:14:22,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:14:22,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 20 transitions. [2022-11-16 16:14:22,433 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 20 transitions. Word has length 11 [2022-11-16 16:14:22,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 16:14:22,434 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 20 transitions. [2022-11-16 16:14:22,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:14:22,435 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 20 transitions. [2022-11-16 16:14:22,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 16:14:22,435 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:14:22,435 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:14:22,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 16:14:22,436 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:14:22,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:14:22,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1139004290, now seen corresponding path program 1 times [2022-11-16 16:14:22,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-16 16:14:22,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499417235] [2022-11-16 16:14:22,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:14:22,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 16:14:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 16:14:22,490 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 16:14:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 16:14:22,571 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-16 16:14:22,577 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-16 16:14:22,579 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-16 16:14:22,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 16:14:22,587 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-11-16 16:14:22,595 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-16 16:14:22,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.11 04:14:22 BoogieIcfgContainer [2022-11-16 16:14:22,636 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-16 16:14:22,637 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 16:14:22,637 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 16:14:22,637 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 16:14:22,638 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:14:21" (3/4) ... [2022-11-16 16:14:22,642 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-16 16:14:22,642 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 16:14:22,643 INFO L158 Benchmark]: Toolchain (without parser) took 1992.95ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 68.3MB in the beginning and 109.4MB in the end (delta: -41.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:14:22,643 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 115.3MB. Free memory is still 85.3MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:14:22,644 INFO L158 Benchmark]: CACSL2BoogieTranslator took 367.91ms. Allocated memory is still 115.3MB. Free memory was 68.1MB in the beginning and 90.1MB in the end (delta: -22.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-16 16:14:22,645 INFO L158 Benchmark]: Boogie Procedure Inliner took 67.41ms. Allocated memory is still 115.3MB. Free memory was 90.1MB in the beginning and 88.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:14:22,645 INFO L158 Benchmark]: Boogie Preprocessor took 43.29ms. Allocated memory is still 115.3MB. Free memory was 88.4MB in the beginning and 87.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:14:22,646 INFO L158 Benchmark]: RCFGBuilder took 346.48ms. Allocated memory is still 115.3MB. Free memory was 87.1MB in the beginning and 75.0MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 16:14:22,647 INFO L158 Benchmark]: TraceAbstraction took 1151.57ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 74.5MB in the beginning and 109.4MB in the end (delta: -34.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:14:22,647 INFO L158 Benchmark]: Witness Printer took 5.25ms. Allocated memory is still 138.4MB. Free memory is still 109.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:14:22,650 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 115.3MB. Free memory is still 85.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 367.91ms. Allocated memory is still 115.3MB. Free memory was 68.1MB in the beginning and 90.1MB in the end (delta: -22.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 67.41ms. Allocated memory is still 115.3MB. Free memory was 90.1MB in the beginning and 88.4MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 43.29ms. Allocated memory is still 115.3MB. Free memory was 88.4MB in the beginning and 87.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 346.48ms. Allocated memory is still 115.3MB. Free memory was 87.1MB in the beginning and 75.0MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 1151.57ms. Allocated memory was 115.3MB in the beginning and 138.4MB in the end (delta: 23.1MB). Free memory was 74.5MB in the beginning and 109.4MB in the end (delta: -34.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.25ms. Allocated memory is still 138.4MB. Free memory is still 109.4MB. 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: 51]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 33, overapproximation of someBinaryDOUBLEComparisonOperation at line 38, overapproximation of to_real at line 17, overapproximation of someBinaryArithmeticFLOAToperation at line 36. Possible FailurePath: [L1] int __return_main; [L14] int main__i; [L15] float main__z; [L16] float main__t; [L17] float main__min[5] = { 5, 10, 12, 30, 150 }; [L18] float main__max[5] = { 10, 12, 30, 150, 300 }; [L19] main__t = __VERIFIER_nondet_float() [L20] int main____CPAchecker_TMP_0; [L21] EXPR main__min[0] VAL [__return_main=0, main__max={4:0}, main__min={5:0}, main__min[0]=56] [L21] COND TRUE main__t >= (main__min[0]) [L23] EXPR main__max[4UL] VAL [__return_main=0, main__max={4:0}, main__max[4UL]=57, main__min={5:0}] [L23] COND TRUE main__t <= (main__max[4UL]) [L25] main____CPAchecker_TMP_0 = 1 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__max={4:0}, main__min={5:0}] [L27] COND TRUE main____CPAchecker_TMP_0 != 0 [L29] main__i = 0 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__i=0, main__max={4:0}, main__min={5:0}] [L31] COND TRUE main__i < 5UL [L33] EXPR main__max[main__i] VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__i=0, main__max={4:0}, main__max[main__i]=55, main__min={5:0}] [L33] COND TRUE main__t <= (main__max[main__i]) [L36] EXPR main__min[main__i] [L36] EXPR main__max[main__i] [L36] EXPR main__min[main__i] [L36] main__z = (main__t - (main__min[main__i])) / ((main__max[main__i]) - (main__min[main__i])) [L37] int main____CPAchecker_TMP_1; VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__i=0, main__max={4:0}, main__min={5:0}] [L38] COND FALSE !(main__z >= 0.0) VAL [__return_main=0, main____CPAchecker_TMP_0=1, main__i=0, main__max={4:0}, main__min={5:0}] [L63] main____CPAchecker_TMP_1 = 0 VAL [__return_main=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0, main__max={4:0}, main__min={5:0}] [L45] int __tmp_1; [L46] __tmp_1 = main____CPAchecker_TMP_1 [L47] int __VERIFIER_assert__cond; [L48] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0, main__max={4:0}, main__min={5:0}] [L49] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0, main__max={4:0}, main__min={5:0}] [L51] reach_error() VAL [__return_main=0, __tmp_1=0, __VERIFIER_assert__cond=0, main____CPAchecker_TMP_0=1, main____CPAchecker_TMP_1=0, main__i=0, main__max={4:0}, main__min={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 41 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 96 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 62 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 33 IncrementalHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 34 mSDtfsCounter, 33 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 12, 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, 2 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 30 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-16 16:14:22,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/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-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/bin/utaipan-Xvt2sAort0/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/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_f668ed36-8ecf-4634-91fe-5f38168a30ac/bin/utaipan-Xvt2sAort0/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/bin/utaipan-Xvt2sAort0/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/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_f668ed36-8ecf-4634-91fe-5f38168a30ac/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 198a885d453136e0f485e10bae010eb2ed68236b2d57919bf162df9bdad27ee6 --- 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 16:14:25,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 16:14:25,275 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 16:14:25,309 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 16:14:25,310 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 16:14:25,314 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 16:14:25,317 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 16:14:25,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 16:14:25,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 16:14:25,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 16:14:25,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 16:14:25,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 16:14:25,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 16:14:25,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 16:14:25,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 16:14:25,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 16:14:25,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 16:14:25,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 16:14:25,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 16:14:25,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 16:14:25,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 16:14:25,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 16:14:25,366 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 16:14:25,367 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 16:14:25,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 16:14:25,371 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 16:14:25,372 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 16:14:25,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 16:14:25,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 16:14:25,381 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 16:14:25,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 16:14:25,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 16:14:25,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 16:14:25,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 16:14:25,389 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 16:14:25,389 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 16:14:25,390 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 16:14:25,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 16:14:25,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 16:14:25,393 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 16:14:25,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 16:14:25,397 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/bin/utaipan-Xvt2sAort0/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2022-11-16 16:14:25,453 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 16:14:25,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 16:14:25,455 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 16:14:25,456 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 16:14:25,457 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 16:14:25,457 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 16:14:25,457 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-16 16:14:25,458 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-16 16:14:25,458 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-16 16:14:25,458 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-16 16:14:25,459 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-16 16:14:25,460 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-16 16:14:25,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 16:14:25,462 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 16:14:25,462 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 16:14:25,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 16:14:25,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 16:14:25,463 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 16:14:25,463 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 16:14:25,464 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-16 16:14:25,464 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-16 16:14:25,464 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-16 16:14:25,464 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 16:14:25,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 16:14:25,465 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 16:14:25,465 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 16:14:25,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 16:14:25,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 16:14:25,466 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 16:14:25,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:14:25,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 16:14:25,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 16:14:25,468 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 16:14:25,468 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-16 16:14:25,468 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-16 16:14:25,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 16:14:25,469 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-16 16:14:25,469 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-16 16:14:25,470 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_f668ed36-8ecf-4634-91fe-5f38168a30ac/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/bin/utaipan-Xvt2sAort0 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 198a885d453136e0f485e10bae010eb2ed68236b2d57919bf162df9bdad27ee6 [2022-11-16 16:14:25,957 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 16:14:25,988 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 16:14:25,991 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 16:14:25,992 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 16:14:25,993 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 16:14:25,995 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/bin/utaipan-Xvt2sAort0/../../sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c [2022-11-16 16:14:26,083 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/bin/utaipan-Xvt2sAort0/data/c826675e2/e61bbf2bb8144b2a83d029fc09ebc1c5/FLAG8fd67e083 [2022-11-16 16:14:26,824 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 16:14:26,825 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c [2022-11-16 16:14:26,834 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/bin/utaipan-Xvt2sAort0/data/c826675e2/e61bbf2bb8144b2a83d029fc09ebc1c5/FLAG8fd67e083 [2022-11-16 16:14:27,154 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/bin/utaipan-Xvt2sAort0/data/c826675e2/e61bbf2bb8144b2a83d029fc09ebc1c5 [2022-11-16 16:14:27,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 16:14:27,161 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 16:14:27,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 16:14:27,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 16:14:27,174 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 16:14:27,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:14:27" (1/1) ... [2022-11-16 16:14:27,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67ae3b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:27, skipping insertion in model container [2022-11-16 16:14:27,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 04:14:27" (1/1) ... [2022-11-16 16:14:27,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 16:14:27,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 16:14:27,396 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_f668ed36-8ecf-4634-91fe-5f38168a30ac/sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c[1306,1319] [2022-11-16 16:14:27,402 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:14:27,433 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 16:14:27,491 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_f668ed36-8ecf-4634-91fe-5f38168a30ac/sv-benchmarks/c/float-benchs/interpolation.c.p+cfa-reducer.c[1306,1319] [2022-11-16 16:14:27,494 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 16:14:27,513 INFO L208 MainTranslator]: Completed translation [2022-11-16 16:14:27,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:27 WrapperNode [2022-11-16 16:14:27,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 16:14:27,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 16:14:27,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 16:14:27,516 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 16:14:27,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:27" (1/1) ... [2022-11-16 16:14:27,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:27" (1/1) ... [2022-11-16 16:14:27,561 INFO L138 Inliner]: procedures = 19, calls = 33, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 100 [2022-11-16 16:14:27,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 16:14:27,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 16:14:27,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 16:14:27,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 16:14:27,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:27" (1/1) ... [2022-11-16 16:14:27,574 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:27" (1/1) ... [2022-11-16 16:14:27,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:27" (1/1) ... [2022-11-16 16:14:27,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:27" (1/1) ... [2022-11-16 16:14:27,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:27" (1/1) ... [2022-11-16 16:14:27,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:27" (1/1) ... [2022-11-16 16:14:27,607 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:27" (1/1) ... [2022-11-16 16:14:27,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:27" (1/1) ... [2022-11-16 16:14:27,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 16:14:27,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 16:14:27,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 16:14:27,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 16:14:27,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:27" (1/1) ... [2022-11-16 16:14:27,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 16:14:27,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/bin/utaipan-Xvt2sAort0/z3 [2022-11-16 16:14:27,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 16:14:27,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/bin/utaipan-Xvt2sAort0/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 16:14:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 16:14:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2022-11-16 16:14:27,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-16 16:14:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 16:14:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2022-11-16 16:14:27,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 16:14:27,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 16:14:27,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 16:14:27,831 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 16:14:27,833 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 16:14:30,745 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 16:14:30,752 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 16:14:30,752 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 16:14:30,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:14:30 BoogieIcfgContainer [2022-11-16 16:14:30,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 16:14:30,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 16:14:30,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 16:14:30,761 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 16:14:30,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 04:14:27" (1/3) ... [2022-11-16 16:14:30,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6b4aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:14:30, skipping insertion in model container [2022-11-16 16:14:30,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 04:14:27" (2/3) ... [2022-11-16 16:14:30,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c6b4aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 04:14:30, skipping insertion in model container [2022-11-16 16:14:30,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 04:14:30" (3/3) ... [2022-11-16 16:14:30,773 INFO L112 eAbstractionObserver]: Analyzing ICFG interpolation.c.p+cfa-reducer.c [2022-11-16 16:14:30,797 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 16:14:30,799 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 16:14:30,920 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 16:14:30,936 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;@528518f6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 16:14:30,937 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-16 16:14:30,944 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 16:14:30,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-16 16:14:30,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 16:14:30,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 16:14:30,955 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 16:14:30,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 16:14:30,963 INFO L85 PathProgramCache]: Analyzing trace with hash 83921358, now seen corresponding path program 1 times [2022-11-16 16:14:30,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-16 16:14:30,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1476935383] [2022-11-16 16:14:30,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 16:14:30,984 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 16:14:30,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/bin/utaipan-Xvt2sAort0/mathsat [2022-11-16 16:14:30,992 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/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 16:14:31,001 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/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 16:14:31,165 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/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)] Forceful destruction successful, exit code 139 [2022-11-16 16:14:31,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/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 16:14:31,366 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_f668ed36-8ecf-4634-91fe-5f38168a30ac/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) 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_f668ed36-8ecf-4634-91fe-5f38168a30ac/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) 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 16:14:31,376 INFO L158 Benchmark]: Toolchain (without parser) took 4213.59ms. Allocated memory is still 75.5MB. Free memory was 60.3MB in the beginning and 27.8MB in the end (delta: 32.4MB). Peak memory consumption was 30.0MB. Max. memory is 16.1GB. [2022-11-16 16:14:31,376 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 75.5MB. Free memory is still 56.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:14:31,377 INFO L158 Benchmark]: CACSL2BoogieTranslator took 349.89ms. Allocated memory is still 75.5MB. Free memory was 60.1MB in the beginning and 57.5MB in the end (delta: 2.6MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. [2022-11-16 16:14:31,379 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.16ms. Allocated memory is still 75.5MB. Free memory was 57.5MB in the beginning and 55.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 16:14:31,380 INFO L158 Benchmark]: Boogie Preprocessor took 50.57ms. Allocated memory is still 75.5MB. Free memory was 55.7MB in the beginning and 54.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 16:14:31,382 INFO L158 Benchmark]: RCFGBuilder took 3141.77ms. Allocated memory is still 75.5MB. Free memory was 54.1MB in the beginning and 40.3MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-16 16:14:31,387 INFO L158 Benchmark]: TraceAbstraction took 615.91ms. Allocated memory is still 75.5MB. Free memory was 39.5MB in the beginning and 27.8MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-16 16:14:31,391 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22ms. Allocated memory is still 75.5MB. Free memory is still 56.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 349.89ms. Allocated memory is still 75.5MB. Free memory was 60.1MB in the beginning and 57.5MB in the end (delta: 2.6MB). Peak memory consumption was 11.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.16ms. Allocated memory is still 75.5MB. Free memory was 57.5MB in the beginning and 55.7MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 50.57ms. Allocated memory is still 75.5MB. Free memory was 55.7MB in the beginning and 54.1MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 3141.77ms. Allocated memory is still 75.5MB. Free memory was 54.1MB in the beginning and 40.3MB in the end (delta: 13.8MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 615.91ms. Allocated memory is still 75.5MB. Free memory was 39.5MB in the beginning and 27.8MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. 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_f668ed36-8ecf-4634-91fe-5f38168a30ac/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) 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_f668ed36-8ecf-4634-91fe-5f38168a30ac/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) 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 16:14:31,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f668ed36-8ecf-4634-91fe-5f38168a30ac/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 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_f668ed36-8ecf-4634-91fe-5f38168a30ac/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) with exit command (exit)) Received EOF on stdin. No stderr output.