./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_square-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8 --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 fa8669e514192921cf64fdf0639cd37a443816328604ea9b0272ab52a6769b9f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:10:31,051 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:10:31,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:10:31,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:10:31,111 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:10:31,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:10:31,114 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:10:31,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:10:31,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:10:31,119 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:10:31,120 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:10:31,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:10:31,122 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:10:31,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:10:31,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:10:31,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:10:31,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:10:31,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:10:31,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:10:31,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:10:31,134 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:10:31,136 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:10:31,137 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:10:31,138 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:10:31,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:10:31,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:10:31,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:10:31,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:10:31,144 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:10:31,146 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:10:31,146 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:10:31,147 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:10:31,148 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:10:31,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:10:31,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:10:31,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:10:31,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:10:31,152 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:10:31,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:10:31,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:10:31,154 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:10:31,154 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 02:10:31,179 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:10:31,185 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:10:31,186 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:10:31,186 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:10:31,187 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:10:31,187 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:10:31,187 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 02:10:31,187 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:10:31,188 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:10:31,188 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 02:10:31,188 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 02:10:31,188 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:10:31,188 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 02:10:31,189 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 02:10:31,189 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 02:10:31,190 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:10:31,190 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:10:31,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 02:10:31,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:10:31,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:10:31,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:10:31,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:10:31,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:10:31,191 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:10:31,191 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:10:31,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:10:31,192 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:10:31,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:10:31,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:10:31,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:10:31,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:10:31,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:10:31,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:10:31,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:10:31,194 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 02:10:31,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 02:10:31,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:10:31,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:10:31,194 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:10:31,195 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa8669e514192921cf64fdf0639cd37a443816328604ea9b0272ab52a6769b9f [2021-11-07 02:10:31,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:10:31,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:10:31,471 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:10:31,472 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:10:31,473 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:10:31,474 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/float-benchs/inv_square-1.c [2021-11-07 02:10:31,544 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/data/e896eb838/fbafae63ebd44ee7989ae4504d817210/FLAGc381258a8 [2021-11-07 02:10:31,988 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:10:31,992 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/sv-benchmarks/c/float-benchs/inv_square-1.c [2021-11-07 02:10:32,018 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/data/e896eb838/fbafae63ebd44ee7989ae4504d817210/FLAGc381258a8 [2021-11-07 02:10:32,388 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/data/e896eb838/fbafae63ebd44ee7989ae4504d817210 [2021-11-07 02:10:32,391 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:10:32,392 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:10:32,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:10:32,394 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:10:32,397 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:10:32,398 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:10:32" (1/1) ... [2021-11-07 02:10:32,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@782d16f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:32, skipping insertion in model container [2021-11-07 02:10:32,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:10:32" (1/1) ... [2021-11-07 02:10:32,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:10:32,432 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:10:32,601 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/sv-benchmarks/c/float-benchs/inv_square-1.c[487,500] [2021-11-07 02:10:32,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:10:32,620 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:10:32,631 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/sv-benchmarks/c/float-benchs/inv_square-1.c[487,500] [2021-11-07 02:10:32,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:10:32,646 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:10:32,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:32 WrapperNode [2021-11-07 02:10:32,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:10:32,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:10:32,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:10:32,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:10:32,656 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:32" (1/1) ... [2021-11-07 02:10:32,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:32" (1/1) ... [2021-11-07 02:10:32,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:10:32,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:10:32,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:10:32,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:10:32,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:32" (1/1) ... [2021-11-07 02:10:32,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:32" (1/1) ... [2021-11-07 02:10:32,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:32" (1/1) ... [2021-11-07 02:10:32,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:32" (1/1) ... [2021-11-07 02:10:32,695 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:32" (1/1) ... [2021-11-07 02:10:32,697 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:32" (1/1) ... [2021-11-07 02:10:32,698 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:32" (1/1) ... [2021-11-07 02:10:32,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:10:32,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:10:32,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:10:32,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:10:32,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:32" (1/1) ... [2021-11-07 02:10:32,709 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:10:32,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:10:32,731 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:10:32,734 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:10:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 02:10:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:10:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:10:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:10:33,046 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:10:33,047 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-07 02:10:33,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:10:33 BoogieIcfgContainer [2021-11-07 02:10:33,049 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:10:33,050 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:10:33,051 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:10:33,054 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:10:33,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:10:32" (1/3) ... [2021-11-07 02:10:33,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d482c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:10:33, skipping insertion in model container [2021-11-07 02:10:33,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:32" (2/3) ... [2021-11-07 02:10:33,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26d482c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:10:33, skipping insertion in model container [2021-11-07 02:10:33,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:10:33" (3/3) ... [2021-11-07 02:10:33,057 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square-1.c [2021-11-07 02:10:33,062 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:10:33,062 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 02:10:33,110 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:10:33,117 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:10:33,117 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 02:10:33,131 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:33,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-07 02:10:33,135 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:33,136 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-07 02:10:33,136 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:10:33,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:33,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1947436, now seen corresponding path program 1 times [2021-11-07 02:10:33,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 02:10:33,152 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711883625] [2021-11-07 02:10:33,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:33,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 02:10:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 02:10:33,258 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 02:10:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 02:10:33,319 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 02:10:33,323 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 02:10:33,324 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 02:10:33,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 02:10:33,331 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-07 02:10:33,334 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 02:10:33,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:10:33 BoogieIcfgContainer [2021-11-07 02:10:33,355 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 02:10:33,359 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 02:10:33,360 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 02:10:33,360 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 02:10:33,361 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:10:33" (3/4) ... [2021-11-07 02:10:33,363 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 02:10:33,364 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 02:10:33,368 INFO L168 Benchmark]: Toolchain (without parser) took 973.20 ms. Allocated memory is still 94.4 MB. Free memory was 71.9 MB in the beginning and 41.9 MB in the end (delta: 30.0 MB). Peak memory consumption was 27.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:10:33,369 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 94.4 MB. Free memory is still 67.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:10:33,370 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.51 ms. Allocated memory is still 94.4 MB. Free memory was 71.7 MB in the beginning and 69.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:10:33,372 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.16 ms. Allocated memory is still 94.4 MB. Free memory was 69.7 MB in the beginning and 68.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:10:33,373 INFO L168 Benchmark]: Boogie Preprocessor took 19.27 ms. Allocated memory is still 94.4 MB. Free memory was 68.1 MB in the beginning and 67.2 MB in the end (delta: 929.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:10:33,374 INFO L168 Benchmark]: RCFGBuilder took 348.72 ms. Allocated memory is still 94.4 MB. Free memory was 67.2 MB in the beginning and 56.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:10:33,375 INFO L168 Benchmark]: TraceAbstraction took 304.48 ms. Allocated memory is still 94.4 MB. Free memory was 55.9 MB in the beginning and 42.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 02:10:33,383 INFO L168 Benchmark]: Witness Printer took 5.02 ms. Allocated memory is still 94.4 MB. Free memory was 42.1 MB in the beginning and 41.9 MB in the end (delta: 227.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:10:33,390 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 94.4 MB. Free memory is still 67.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 253.51 ms. Allocated memory is still 94.4 MB. Free memory was 71.7 MB in the beginning and 69.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.16 ms. Allocated memory is still 94.4 MB. Free memory was 69.7 MB in the beginning and 68.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.27 ms. Allocated memory is still 94.4 MB. Free memory was 68.1 MB in the beginning and 67.2 MB in the end (delta: 929.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 348.72 ms. Allocated memory is still 94.4 MB. Free memory was 67.2 MB in the beginning and 56.4 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 304.48 ms. Allocated memory is still 94.4 MB. Free memory was 55.9 MB in the beginning and 42.1 MB in the end (delta: 13.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.02 ms. Allocated memory is still 94.4 MB. Free memory was 42.1 MB in the beginning and 41.9 MB in the end (delta: 227.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s 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: 13]: 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 22, overapproximation of someBinaryArithmeticFLOAToperation at line 23. Possible FailurePath: [L17] float x, y, z; [L19] x = __VERIFIER_nondet_float() [L11] COND FALSE !(!cond) [L22] COND TRUE x != 0.f [L23] y = x * x [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-07 02:10:33,426 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8 --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 fa8669e514192921cf64fdf0639cd37a443816328604ea9b0272ab52a6769b9f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 02:10:35,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 02:10:35,812 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 02:10:35,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 02:10:35,869 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 02:10:35,874 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 02:10:35,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 02:10:35,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 02:10:35,885 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 02:10:35,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 02:10:35,897 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 02:10:35,898 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 02:10:35,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 02:10:35,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 02:10:35,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 02:10:35,909 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 02:10:35,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 02:10:35,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 02:10:35,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 02:10:35,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 02:10:35,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 02:10:35,927 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 02:10:35,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 02:10:35,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 02:10:35,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 02:10:35,939 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 02:10:35,940 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 02:10:35,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 02:10:35,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 02:10:35,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 02:10:35,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 02:10:35,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 02:10:35,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 02:10:35,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 02:10:35,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 02:10:35,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 02:10:35,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 02:10:35,951 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 02:10:35,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 02:10:35,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 02:10:35,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 02:10:35,955 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 02:10:36,001 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 02:10:36,002 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 02:10:36,003 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 02:10:36,003 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 02:10:36,004 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 02:10:36,004 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 02:10:36,004 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 02:10:36,004 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 02:10:36,004 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 02:10:36,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 02:10:36,007 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 02:10:36,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 02:10:36,008 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 02:10:36,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 02:10:36,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 02:10:36,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 02:10:36,008 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 02:10:36,009 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 02:10:36,009 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 02:10:36,009 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 02:10:36,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 02:10:36,010 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 02:10:36,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 02:10:36,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 02:10:36,010 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 02:10:36,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 02:10:36,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:10:36,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 02:10:36,011 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 02:10:36,011 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 02:10:36,012 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 02:10:36,012 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 02:10:36,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 02:10:36,012 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 02:10:36,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 02:10:36,013 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_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa8669e514192921cf64fdf0639cd37a443816328604ea9b0272ab52a6769b9f [2021-11-07 02:10:36,442 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 02:10:36,471 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 02:10:36,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 02:10:36,476 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 02:10:36,476 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 02:10:36,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/float-benchs/inv_square-1.c [2021-11-07 02:10:36,557 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/data/9b636f0b0/d406492a92ce4071a742f6c39be50202/FLAG426745b9b [2021-11-07 02:10:37,111 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 02:10:37,112 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/sv-benchmarks/c/float-benchs/inv_square-1.c [2021-11-07 02:10:37,120 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/data/9b636f0b0/d406492a92ce4071a742f6c39be50202/FLAG426745b9b [2021-11-07 02:10:37,491 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/data/9b636f0b0/d406492a92ce4071a742f6c39be50202 [2021-11-07 02:10:37,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 02:10:37,500 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 02:10:37,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 02:10:37,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 02:10:37,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 02:10:37,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:10:37" (1/1) ... [2021-11-07 02:10:37,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5198544f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:37, skipping insertion in model container [2021-11-07 02:10:37,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:10:37" (1/1) ... [2021-11-07 02:10:37,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 02:10:37,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 02:10:37,700 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/sv-benchmarks/c/float-benchs/inv_square-1.c[487,500] [2021-11-07 02:10:37,708 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:10:37,722 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 02:10:37,747 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/sv-benchmarks/c/float-benchs/inv_square-1.c[487,500] [2021-11-07 02:10:37,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 02:10:37,788 INFO L208 MainTranslator]: Completed translation [2021-11-07 02:10:37,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:37 WrapperNode [2021-11-07 02:10:37,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 02:10:37,790 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 02:10:37,790 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 02:10:37,790 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 02:10:37,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:37" (1/1) ... [2021-11-07 02:10:37,806 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:37" (1/1) ... [2021-11-07 02:10:37,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 02:10:37,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 02:10:37,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 02:10:37,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 02:10:37,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:37" (1/1) ... [2021-11-07 02:10:37,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:37" (1/1) ... [2021-11-07 02:10:37,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:37" (1/1) ... [2021-11-07 02:10:37,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:37" (1/1) ... [2021-11-07 02:10:37,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:37" (1/1) ... [2021-11-07 02:10:37,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:37" (1/1) ... [2021-11-07 02:10:37,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:37" (1/1) ... [2021-11-07 02:10:37,867 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 02:10:37,868 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 02:10:37,869 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 02:10:37,869 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 02:10:37,870 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:37" (1/1) ... [2021-11-07 02:10:37,875 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 02:10:37,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 02:10:37,905 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 02:10:37,920 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 02:10:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 02:10:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 02:10:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 02:10:37,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 02:10:38,988 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 02:10:38,988 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-07 02:10:38,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:10:38 BoogieIcfgContainer [2021-11-07 02:10:38,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 02:10:38,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 02:10:38,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 02:10:38,995 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 02:10:38,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:10:37" (1/3) ... [2021-11-07 02:10:38,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@191a3e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:10:38, skipping insertion in model container [2021-11-07 02:10:38,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:10:37" (2/3) ... [2021-11-07 02:10:38,997 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@191a3e42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:10:38, skipping insertion in model container [2021-11-07 02:10:38,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:10:38" (3/3) ... [2021-11-07 02:10:38,998 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square-1.c [2021-11-07 02:10:39,003 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 02:10:39,004 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 02:10:39,049 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 02:10:39,057 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 02:10:39,058 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 02:10:39,071 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:39,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 02:10:39,076 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:39,077 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 02:10:39,077 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:10:39,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:39,101 INFO L85 PathProgramCache]: Analyzing trace with hash 889510699, now seen corresponding path program 1 times [2021-11-07 02:10:39,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:10:39,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1300991869] [2021-11-07 02:10:39,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:39,115 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:10:39,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:10:39,130 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:10:39,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 02:10:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:10:39,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 02:10:39,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:10:39,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:10:39,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:10:39,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:10:39,448 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:10:39,449 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1300991869] [2021-11-07 02:10:39,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1300991869] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:10:39,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:10:39,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 02:10:39,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709621958] [2021-11-07 02:10:39,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 02:10:39,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:10:39,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 02:10:39,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:10:39,484 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:39,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:10:39,497 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-11-07 02:10:39,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 02:10:39,499 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-07 02:10:39,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:10:39,507 INFO L225 Difference]: With dead ends: 21 [2021-11-07 02:10:39,508 INFO L226 Difference]: Without dead ends: 7 [2021-11-07 02:10:39,510 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 02:10:39,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-11-07 02:10:39,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-11-07 02:10:39,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:39,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-11-07 02:10:39,540 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-11-07 02:10:39,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:10:39,540 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-11-07 02:10:39,541 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:10:39,541 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-11-07 02:10:39,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-07 02:10:39,542 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:10:39,542 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-07 02:10:39,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:39,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:10:39,755 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:10:39,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:10:39,757 INFO L85 PathProgramCache]: Analyzing trace with hash 889570281, now seen corresponding path program 1 times [2021-11-07 02:10:39,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:10:39,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [112589901] [2021-11-07 02:10:39,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:10:39,759 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:10:39,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:10:39,760 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:10:39,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:10:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 02:10:39,919 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 02:10:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 02:10:40,022 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-07 02:10:40,022 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 02:10:40,024 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 02:10:40,043 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:10:40,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:10:40,229 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-07 02:10:40,232 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 02:10:40,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:10:40 BoogieIcfgContainer [2021-11-07 02:10:40,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 02:10:40,253 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 02:10:40,253 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 02:10:40,253 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 02:10:40,254 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:10:38" (3/4) ... [2021-11-07 02:10:40,255 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 02:10:40,289 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 02:10:40,289 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 02:10:40,292 INFO L168 Benchmark]: Toolchain (without parser) took 2789.84 ms. Allocated memory was 65.0 MB in the beginning and 92.3 MB in the end (delta: 27.3 MB). Free memory was 45.6 MB in the beginning and 56.7 MB in the end (delta: -11.1 MB). Peak memory consumption was 17.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:10:40,295 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 65.0 MB. Free memory is still 46.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:10:40,295 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.85 ms. Allocated memory is still 65.0 MB. Free memory was 45.5 MB in the beginning and 48.6 MB in the end (delta: -3.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 02:10:40,297 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.18 ms. Allocated memory is still 65.0 MB. Free memory was 48.4 MB in the beginning and 47.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 02:10:40,297 INFO L168 Benchmark]: Boogie Preprocessor took 41.83 ms. Allocated memory is still 65.0 MB. Free memory was 47.0 MB in the beginning and 45.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:10:40,299 INFO L168 Benchmark]: RCFGBuilder took 1121.84 ms. Allocated memory is still 65.0 MB. Free memory was 45.8 MB in the beginning and 36.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 02:10:40,302 INFO L168 Benchmark]: TraceAbstraction took 1260.23 ms. Allocated memory was 65.0 MB in the beginning and 92.3 MB in the end (delta: 27.3 MB). Free memory was 36.2 MB in the beginning and 58.3 MB in the end (delta: -22.2 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-11-07 02:10:40,302 INFO L168 Benchmark]: Witness Printer took 36.84 ms. Allocated memory is still 92.3 MB. Free memory was 58.3 MB in the beginning and 56.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 02:10:40,305 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 65.0 MB. Free memory is still 46.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 286.85 ms. Allocated memory is still 65.0 MB. Free memory was 45.5 MB in the beginning and 48.6 MB in the end (delta: -3.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.18 ms. Allocated memory is still 65.0 MB. Free memory was 48.4 MB in the beginning and 47.0 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.83 ms. Allocated memory is still 65.0 MB. Free memory was 47.0 MB in the beginning and 45.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1121.84 ms. Allocated memory is still 65.0 MB. Free memory was 45.8 MB in the beginning and 36.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1260.23 ms. Allocated memory was 65.0 MB in the beginning and 92.3 MB in the end (delta: 27.3 MB). Free memory was 36.2 MB in the beginning and 58.3 MB in the end (delta: -22.2 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Witness Printer took 36.84 ms. Allocated memory is still 92.3 MB. Free memory was 58.3 MB in the beginning and 56.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] float x, y, z; [L19] x = __VERIFIER_nondet_float() [L11] COND FALSE !(!cond) [L22] COND TRUE x != 0.f [L23] y = x * x [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 32 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-07 02:10:40,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ae624e7-73ea-47ab-9c96-ac4108949af1/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE