./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_square_int.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square_int.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9d6111f1172e07b7206075be423d21f33b529e79943d78b2db976fd996371e2d --- 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-b5237d8 [2022-11-21 13:47:34,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:47:34,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:47:34,271 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:47:34,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:47:34,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:47:34,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:47:34,275 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:47:34,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:47:34,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:47:34,279 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:47:34,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:47:34,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:47:34,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:47:34,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:47:34,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:47:34,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:47:34,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:47:34,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:47:34,289 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:47:34,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:47:34,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:47:34,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:47:34,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:47:34,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:47:34,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:47:34,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:47:34,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:47:34,299 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:47:34,300 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:47:34,300 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:47:34,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:47:34,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:47:34,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:47:34,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:47:34,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:47:34,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:47:34,306 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:47:34,306 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:47:34,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:47:34,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:47:34,309 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 13:47:34,332 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:47:34,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:47:34,333 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:47:34,333 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:47:34,334 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:47:34,334 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:47:34,335 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:47:34,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:47:34,335 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:47:34,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:47:34,336 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:47:34,336 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:47:34,336 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:47:34,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:47:34,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:47:34,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:47:34,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:47:34,337 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:47:34,337 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:47:34,337 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:47:34,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:47:34,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:47:34,338 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:47:34,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:47:34,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:47:34,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:47:34,339 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:47:34,339 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:47:34,339 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:47:34,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:47:34,340 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:47:34,340 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:47:34,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:47:34,340 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_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d6111f1172e07b7206075be423d21f33b529e79943d78b2db976fd996371e2d [2022-11-21 13:47:34,615 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:47:34,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:47:34,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:47:34,640 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:47:34,641 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:47:34,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/float-benchs/inv_square_int.c [2022-11-21 13:47:37,734 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:47:37,965 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:47:37,967 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/sv-benchmarks/c/float-benchs/inv_square_int.c [2022-11-21 13:47:37,974 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/data/244f62c22/9b2f89e7836d4bf8b044388a691d8387/FLAG79bf6c041 [2022-11-21 13:47:37,991 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/data/244f62c22/9b2f89e7836d4bf8b044388a691d8387 [2022-11-21 13:47:37,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:47:37,999 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:47:38,003 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:47:38,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:47:38,007 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:47:38,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:47:37" (1/1) ... [2022-11-21 13:47:38,009 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43bc8e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:38, skipping insertion in model container [2022-11-21 13:47:38,009 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:47:37" (1/1) ... [2022-11-21 13:47:38,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:47:38,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:47:38,227 WARN L237 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_42d09327-1be0-4976-8a66-98da74c9cb3b/sv-benchmarks/c/float-benchs/inv_square_int.c[482,495] [2022-11-21 13:47:38,237 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:47:38,251 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:47:38,265 WARN L237 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_42d09327-1be0-4976-8a66-98da74c9cb3b/sv-benchmarks/c/float-benchs/inv_square_int.c[482,495] [2022-11-21 13:47:38,270 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:47:38,285 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:47:38,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:38 WrapperNode [2022-11-21 13:47:38,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:47:38,288 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:47:38,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:47:38,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:47:38,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:38" (1/1) ... [2022-11-21 13:47:38,302 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:38" (1/1) ... [2022-11-21 13:47:38,317 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2022-11-21 13:47:38,318 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:47:38,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:47:38,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:47:38,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:47:38,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:38" (1/1) ... [2022-11-21 13:47:38,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:38" (1/1) ... [2022-11-21 13:47:38,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:38" (1/1) ... [2022-11-21 13:47:38,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:38" (1/1) ... [2022-11-21 13:47:38,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:38" (1/1) ... [2022-11-21 13:47:38,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:38" (1/1) ... [2022-11-21 13:47:38,331 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:38" (1/1) ... [2022-11-21 13:47:38,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:38" (1/1) ... [2022-11-21 13:47:38,333 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:47:38,334 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:47:38,334 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:47:38,334 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:47:38,335 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:38" (1/1) ... [2022-11-21 13:47:38,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:47:38,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:47:38,367 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:47:38,370 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:47:38,414 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:47:38,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:47:38,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:47:38,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:47:38,476 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:47:38,478 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:47:38,559 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:47:38,567 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:47:38,567 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 13:47:38,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:47:38 BoogieIcfgContainer [2022-11-21 13:47:38,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:47:38,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:47:38,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:47:38,575 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:47:38,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:47:37" (1/3) ... [2022-11-21 13:47:38,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d742a55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:47:38, skipping insertion in model container [2022-11-21 13:47:38,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:38" (2/3) ... [2022-11-21 13:47:38,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d742a55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:47:38, skipping insertion in model container [2022-11-21 13:47:38,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:47:38" (3/3) ... [2022-11-21 13:47:38,578 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_square_int.c [2022-11-21 13:47:38,598 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:47:38,599 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 13:47:38,642 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:47:38,649 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=PETRI_NET, 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;@768decaa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:47:38,650 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 13:47:38,654 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:47:38,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 13:47:38,660 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:38,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 13:47:38,661 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:38,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:38,666 INFO L85 PathProgramCache]: Analyzing trace with hash 889508713, now seen corresponding path program 1 times [2022-11-21 13:47:38,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:38,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022540638] [2022-11-21 13:47:38,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:38,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:38,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:38,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:47:38,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:47:38,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022540638] [2022-11-21 13:47:38,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022540638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:38,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:38,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:47:38,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610517439] [2022-11-21 13:47:38,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:38,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 13:47:38,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:47:38,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 13:47:38,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 13:47:38,875 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2022-11-21 13:47:38,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:38,892 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-21 13:47:38,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 13:47:38,896 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 [2022-11-21 13:47:38,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:38,904 INFO L225 Difference]: With dead ends: 19 [2022-11-21 13:47:38,904 INFO L226 Difference]: Without dead ends: 7 [2022-11-21 13:47:38,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 13:47:38,910 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:38,916 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:47:38,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-11-21 13:47:38,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-11-21 13:47:38,943 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) [2022-11-21 13:47:38,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2022-11-21 13:47:38,945 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2022-11-21 13:47:38,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:38,947 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2022-11-21 13:47:38,947 INFO L496 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) [2022-11-21 13:47:38,948 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2022-11-21 13:47:38,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 13:47:38,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:38,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 13:47:38,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:47:38,949 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:38,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:38,951 INFO L85 PathProgramCache]: Analyzing trace with hash 889568295, now seen corresponding path program 1 times [2022-11-21 13:47:38,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:47:38,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491661286] [2022-11-21 13:47:38,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:38,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:47:38,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:47:38,996 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-21 13:47:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-21 13:47:39,028 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-21 13:47:39,029 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-21 13:47:39,031 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-21 13:47:39,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 13:47:39,038 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-21 13:47:39,041 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 13:47:39,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:47:39 BoogieIcfgContainer [2022-11-21 13:47:39,075 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 13:47:39,075 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 13:47:39,075 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 13:47:39,076 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 13:47:39,076 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:47:38" (3/4) ... [2022-11-21 13:47:39,079 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-21 13:47:39,080 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 13:47:39,081 INFO L158 Benchmark]: Toolchain (without parser) took 1082.51ms. Allocated memory is still 184.5MB. Free memory was 140.7MB in the beginning and 143.0MB in the end (delta: -2.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:47:39,082 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 134.2MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:47:39,083 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.86ms. Allocated memory is still 184.5MB. Free memory was 140.7MB in the beginning and 130.5MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-21 13:47:39,086 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.33ms. Allocated memory is still 184.5MB. Free memory was 130.5MB in the beginning and 129.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:47:39,087 INFO L158 Benchmark]: Boogie Preprocessor took 14.64ms. Allocated memory is still 184.5MB. Free memory was 129.2MB in the beginning and 128.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 13:47:39,090 INFO L158 Benchmark]: RCFGBuilder took 235.69ms. Allocated memory is still 184.5MB. Free memory was 128.1MB in the beginning and 118.9MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 13:47:39,090 INFO L158 Benchmark]: TraceAbstraction took 502.94ms. Allocated memory is still 184.5MB. Free memory was 118.1MB in the beginning and 143.0MB in the end (delta: -24.9MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:47:39,091 INFO L158 Benchmark]: Witness Printer took 5.50ms. Allocated memory is still 184.5MB. Free memory is still 143.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:47:39,097 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 134.2MB. Free memory is still 73.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 283.86ms. Allocated memory is still 184.5MB. Free memory was 140.7MB in the beginning and 130.5MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.33ms. Allocated memory is still 184.5MB. Free memory was 130.5MB in the beginning and 129.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 14.64ms. Allocated memory is still 184.5MB. Free memory was 129.2MB in the beginning and 128.1MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 235.69ms. Allocated memory is still 184.5MB. Free memory was 128.1MB in the beginning and 118.9MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 502.94ms. Allocated memory is still 184.5MB. Free memory was 118.1MB in the beginning and 143.0MB in the end (delta: -24.9MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 5.50ms. Allocated memory is still 184.5MB. Free memory is still 143.0MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 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 24, overapproximation of someBinaryArithmeticFLOAToperation at line 23. Possible FailurePath: [L17] int x; [L18] float y, z; [L20] x = __VERIFIER_nondet_int() [L21] CALL assume_abort_if_not(x >= -10 && x <= 10) [L11] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L21] RET assume_abort_if_not(x >= -10 && x <= 10) [L23] y = x*x - 2.f [L24] CALL __VERIFIER_assert(y != 0.f) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 10 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-11-21 13:47:39,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square_int.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9d6111f1172e07b7206075be423d21f33b529e79943d78b2db976fd996371e2d --- 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-b5237d8 [2022-11-21 13:47:41,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:47:41,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:47:41,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:47:41,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:47:41,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:47:41,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:47:41,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:47:41,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:47:41,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:47:41,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:47:41,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:47:41,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:47:41,541 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:47:41,544 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:47:41,549 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:47:41,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:47:41,551 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:47:41,552 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:47:41,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:47:41,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:47:41,561 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:47:41,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:47:41,567 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:47:41,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:47:41,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:47:41,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:47:41,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:47:41,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:47:41,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:47:41,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:47:41,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:47:41,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:47:41,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:47:41,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:47:41,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:47:41,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:47:41,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:47:41,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:47:41,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:47:41,584 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:47:41,591 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-11-21 13:47:41,622 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:47:41,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:47:41,623 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:47:41,624 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:47:41,627 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:47:41,627 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:47:41,628 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:47:41,628 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:47:41,628 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:47:41,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:47:41,629 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:47:41,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:47:41,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:47:41,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:47:41,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:47:41,630 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:47:41,631 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-21 13:47:41,631 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-21 13:47:41,631 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-21 13:47:41,631 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:47:41,632 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:47:41,632 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:47:41,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:47:41,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:47:41,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:47:41,633 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:47:41,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:47:41,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:47:41,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:47:41,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:47:41,634 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-11-21 13:47:41,634 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-21 13:47:41,634 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:47:41,635 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:47:41,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:47:41,635 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-21 13:47:41,635 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_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d6111f1172e07b7206075be423d21f33b529e79943d78b2db976fd996371e2d [2022-11-21 13:47:42,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:47:42,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:47:42,027 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:47:42,028 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:47:42,029 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:47:42,030 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/float-benchs/inv_square_int.c [2022-11-21 13:47:45,119 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:47:45,314 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:47:45,315 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/sv-benchmarks/c/float-benchs/inv_square_int.c [2022-11-21 13:47:45,320 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/data/7edb84018/a3468d2ba8b54ed19684df05c35a2ae6/FLAGdc82a1a32 [2022-11-21 13:47:45,336 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/data/7edb84018/a3468d2ba8b54ed19684df05c35a2ae6 [2022-11-21 13:47:45,338 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:47:45,340 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:47:45,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:47:45,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:47:45,345 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:47:45,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:47:45" (1/1) ... [2022-11-21 13:47:45,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dc81ca6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:45, skipping insertion in model container [2022-11-21 13:47:45,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:47:45" (1/1) ... [2022-11-21 13:47:45,354 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:47:45,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:47:45,505 WARN L237 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_42d09327-1be0-4976-8a66-98da74c9cb3b/sv-benchmarks/c/float-benchs/inv_square_int.c[482,495] [2022-11-21 13:47:45,516 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:47:45,532 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:47:45,545 WARN L237 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_42d09327-1be0-4976-8a66-98da74c9cb3b/sv-benchmarks/c/float-benchs/inv_square_int.c[482,495] [2022-11-21 13:47:45,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:47:45,574 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:47:45,575 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:45 WrapperNode [2022-11-21 13:47:45,575 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:47:45,576 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:47:45,576 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:47:45,576 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:47:45,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:45" (1/1) ... [2022-11-21 13:47:45,596 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:45" (1/1) ... [2022-11-21 13:47:45,614 INFO L138 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2022-11-21 13:47:45,614 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:47:45,616 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:47:45,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:47:45,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:47:45,625 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:45" (1/1) ... [2022-11-21 13:47:45,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:45" (1/1) ... [2022-11-21 13:47:45,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:45" (1/1) ... [2022-11-21 13:47:45,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:45" (1/1) ... [2022-11-21 13:47:45,650 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:45" (1/1) ... [2022-11-21 13:47:45,652 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:45" (1/1) ... [2022-11-21 13:47:45,653 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:45" (1/1) ... [2022-11-21 13:47:45,654 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:45" (1/1) ... [2022-11-21 13:47:45,656 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:47:45,657 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:47:45,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:47:45,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:47:45,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:45" (1/1) ... [2022-11-21 13:47:45,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:47:45,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:47:45,699 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:47:45,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:47:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:47:45,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-21 13:47:45,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:47:45,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:47:45,846 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:47:45,848 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:47:47,346 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:47:47,359 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:47:47,359 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-21 13:47:47,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:47:47 BoogieIcfgContainer [2022-11-21 13:47:47,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:47:47,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:47:47,367 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:47:47,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:47:47,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:47:45" (1/3) ... [2022-11-21 13:47:47,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb96ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:47:47, skipping insertion in model container [2022-11-21 13:47:47,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:47:45" (2/3) ... [2022-11-21 13:47:47,374 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bb96ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:47:47, skipping insertion in model container [2022-11-21 13:47:47,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:47:47" (3/3) ... [2022-11-21 13:47:47,382 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_square_int.c [2022-11-21 13:47:47,407 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:47:47,408 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 13:47:47,479 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:47:47,487 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=PETRI_NET, 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;@12245e57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:47:47,488 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-21 13:47:47,492 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-21 13:47:47,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 13:47:47,503 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:47,504 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 13:47:47,504 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:47,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:47,515 INFO L85 PathProgramCache]: Analyzing trace with hash 889508713, now seen corresponding path program 1 times [2022-11-21 13:47:47,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:47:47,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [186718907] [2022-11-21 13:47:47,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:47,531 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 [2022-11-21 13:47:47,532 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:47:47,537 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 13:47:47,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 13:47:47,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:47,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-21 13:47:47,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:47:47,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:47:47,726 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:47:47,726 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:47:47,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [186718907] [2022-11-21 13:47:47,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [186718907] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:47,727 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:47,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:47:47,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307924875] [2022-11-21 13:47:47,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:47,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 13:47:47,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:47:47,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 13:47:47,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 13:47:47,795 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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) [2022-11-21 13:47:47,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:47,810 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2022-11-21 13:47:47,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 13:47:47,813 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 [2022-11-21 13:47:47,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:47,821 INFO L225 Difference]: With dead ends: 19 [2022-11-21 13:47:47,821 INFO L226 Difference]: Without dead ends: 7 [2022-11-21 13:47:47,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 13:47:47,829 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:47,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 13:47:47,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2022-11-21 13:47:47,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2022-11-21 13:47:47,859 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) [2022-11-21 13:47:47,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2022-11-21 13:47:47,861 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2022-11-21 13:47:47,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:47,862 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2022-11-21 13:47:47,862 INFO L496 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) [2022-11-21 13:47:47,863 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2022-11-21 13:47:47,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-21 13:47:47,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 13:47:47,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-21 13:47:47,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/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 0 [2022-11-21 13:47:48,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 13:47:48,077 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 13:47:48,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:47:48,078 INFO L85 PathProgramCache]: Analyzing trace with hash 889568295, now seen corresponding path program 1 times [2022-11-21 13:47:48,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-11-21 13:47:48,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353721826] [2022-11-21 13:47:48,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:47:48,079 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 [2022-11-21 13:47:48,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/mathsat [2022-11-21 13:47:48,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/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) [2022-11-21 13:47:48,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-21 13:47:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:47:48,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-21 13:47:48,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:47:50,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:47:50,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:47:50,971 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-11-21 13:47:50,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353721826] [2022-11-21 13:47:50,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353721826] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:47:50,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:47:50,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-21 13:47:50,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515468504] [2022-11-21 13:47:50,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:47:50,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-21 13:47:50,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-11-21 13:47:50,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-21 13:47:50,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-21 13:47:50,974 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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) [2022-11-21 13:47:51,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 13:47:51,249 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2022-11-21 13:47:51,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-21 13:47:51,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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 [2022-11-21 13:47:51,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 13:47:51,250 INFO L225 Difference]: With dead ends: 7 [2022-11-21 13:47:51,250 INFO L226 Difference]: Without dead ends: 0 [2022-11-21 13:47:51,250 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:47:51,252 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 1 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-21 13:47:51,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-21 13:47:51,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-21 13:47:51,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-21 13:47:51,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-21 13:47:51,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-21 13:47:51,254 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2022-11-21 13:47:51,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 13:47:51,254 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-21 13:47:51,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 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) [2022-11-21 13:47:51,254 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-21 13:47:51,254 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-21 13:47:51,257 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-21 13:47:51,285 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-21 13:47:51,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/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 [2022-11-21 13:47:51,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-21 13:47:51,481 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-21 13:47:51,481 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-21 13:47:51,481 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-21 13:47:51,481 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-21 13:47:51,482 INFO L902 garLoopResultBuilder]: At program point L26(lines 15 27) the Hoare annotation is: true [2022-11-21 13:47:51,482 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2022-11-21 13:47:51,482 INFO L899 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2022-11-21 13:47:51,482 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2022-11-21 13:47:51,483 INFO L899 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2022-11-21 13:47:51,483 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 12) no Hoare annotation was computed. [2022-11-21 13:47:51,483 INFO L902 garLoopResultBuilder]: At program point L13-3(line 13) the Hoare annotation is: true [2022-11-21 13:47:51,486 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-21 13:47:51,489 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-21 13:47:51,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 01:47:51 BoogieIcfgContainer [2022-11-21 13:47:51,500 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-21 13:47:51,501 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-21 13:47:51,501 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-21 13:47:51,502 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-21 13:47:51,502 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:47:47" (3/4) ... [2022-11-21 13:47:51,505 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-21 13:47:51,514 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2022-11-21 13:47:51,514 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-21 13:47:51,515 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-21 13:47:51,515 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-21 13:47:51,544 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/witness.graphml [2022-11-21 13:47:51,544 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-21 13:47:51,545 INFO L158 Benchmark]: Toolchain (without parser) took 6204.69ms. Allocated memory was 73.4MB in the beginning and 94.4MB in the end (delta: 21.0MB). Free memory was 49.7MB in the beginning and 67.6MB in the end (delta: -17.9MB). Peak memory consumption was 2.9MB. Max. memory is 16.1GB. [2022-11-21 13:47:51,545 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 73.4MB. Free memory is still 52.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:47:51,546 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.82ms. Allocated memory is still 73.4MB. Free memory was 49.5MB in the beginning and 38.7MB in the end (delta: 10.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-21 13:47:51,546 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.67ms. Allocated memory is still 73.4MB. Free memory was 38.7MB in the beginning and 37.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:47:51,547 INFO L158 Benchmark]: Boogie Preprocessor took 40.24ms. Allocated memory is still 73.4MB. Free memory was 37.0MB in the beginning and 35.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 13:47:51,547 INFO L158 Benchmark]: RCFGBuilder took 1704.82ms. Allocated memory was 73.4MB in the beginning and 94.4MB in the end (delta: 21.0MB). Free memory was 35.8MB in the beginning and 70.5MB in the end (delta: -34.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-21 13:47:51,548 INFO L158 Benchmark]: TraceAbstraction took 4136.15ms. Allocated memory is still 94.4MB. Free memory was 69.8MB in the beginning and 70.2MB in the end (delta: -443.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-21 13:47:51,548 INFO L158 Benchmark]: Witness Printer took 43.48ms. Allocated memory is still 94.4MB. Free memory was 70.2MB in the beginning and 67.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-21 13:47:51,550 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 73.4MB. Free memory is still 52.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 233.82ms. Allocated memory is still 73.4MB. Free memory was 49.5MB in the beginning and 38.7MB in the end (delta: 10.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.67ms. Allocated memory is still 73.4MB. Free memory was 38.7MB in the beginning and 37.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.24ms. Allocated memory is still 73.4MB. Free memory was 37.0MB in the beginning and 35.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1704.82ms. Allocated memory was 73.4MB in the beginning and 94.4MB in the end (delta: 21.0MB). Free memory was 35.8MB in the beginning and 70.5MB in the end (delta: -34.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4136.15ms. Allocated memory is still 94.4MB. Free memory was 69.8MB in the beginning and 70.2MB in the end (delta: -443.2kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 43.48ms. Allocated memory is still 94.4MB. Free memory was 70.2MB in the beginning and 67.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1 IncrementalHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 13 mSDtfsCounter, 1 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.8s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 18 SizeOfPredicates, 4 NumberOfNonLiveVariables, 46 ConjunctsInSsa, 6 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2022-11-21 13:47:51,592 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_42d09327-1be0-4976-8a66-98da74c9cb3b/bin/uautomizer-vX5HgA9Q3a/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: TRUE