./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fc76096080d06d307c9a613c10bbb5b03d622cd ......................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5fc76096080d06d307c9a613c10bbb5b03d622cd ............................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-678e011 [2019-11-20 00:26:43,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 00:26:43,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 00:26:43,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 00:26:43,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 00:26:43,199 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 00:26:43,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 00:26:43,210 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 00:26:43,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 00:26:43,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 00:26:43,221 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 00:26:43,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 00:26:43,222 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 00:26:43,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 00:26:43,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 00:26:43,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 00:26:43,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 00:26:43,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 00:26:43,231 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 00:26:43,235 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 00:26:43,239 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 00:26:43,241 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 00:26:43,243 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 00:26:43,244 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 00:26:43,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 00:26:43,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 00:26:43,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 00:26:43,249 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 00:26:43,250 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 00:26:43,251 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 00:26:43,251 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 00:26:43,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 00:26:43,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 00:26:43,253 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 00:26:43,254 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 00:26:43,254 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 00:26:43,255 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 00:26:43,255 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 00:26:43,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 00:26:43,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 00:26:43,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 00:26:43,258 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 00:26:43,283 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 00:26:43,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 00:26:43,295 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 00:26:43,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 00:26:43,296 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 00:26:43,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 00:26:43,296 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 00:26:43,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 00:26:43,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 00:26:43,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 00:26:43,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 00:26:43,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 00:26:43,297 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 00:26:43,297 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 00:26:43,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 00:26:43,298 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 00:26:43,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 00:26:43,298 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 00:26:43,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 00:26:43,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 00:26:43,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 00:26:43,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 00:26:43,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 00:26:43,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 00:26:43,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 00:26:43,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 00:26:43,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 00:26:43,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 00:26:43,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer 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(__VERIFIER_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 -> 5fc76096080d06d307c9a613c10bbb5b03d622cd [2019-11-20 00:26:43,443 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 00:26:43,453 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 00:26:43,457 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 00:26:43,458 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 00:26:43,459 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 00:26:43,460 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c [2019-11-20 00:26:43,526 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer/data/030049f93/a9d1b399b99e43adbe726320ff8e93f4/FLAG9aa11ab1b [2019-11-20 00:26:43,921 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 00:26:43,921 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c [2019-11-20 00:26:43,927 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer/data/030049f93/a9d1b399b99e43adbe726320ff8e93f4/FLAG9aa11ab1b [2019-11-20 00:26:43,945 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer/data/030049f93/a9d1b399b99e43adbe726320ff8e93f4 [2019-11-20 00:26:43,948 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 00:26:43,950 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 00:26:43,951 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 00:26:43,951 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 00:26:43,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 00:26:43,955 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:26:43" (1/1) ... [2019-11-20 00:26:43,957 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6eaf26c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:43, skipping insertion in model container [2019-11-20 00:26:43,958 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:26:43" (1/1) ... [2019-11-20 00:26:43,966 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 00:26:43,983 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 00:26:44,115 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:26:44,120 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 00:26:44,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:26:44,209 INFO L192 MainTranslator]: Completed translation [2019-11-20 00:26:44,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:44 WrapperNode [2019-11-20 00:26:44,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 00:26:44,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 00:26:44,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 00:26:44,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 00:26:44,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:44" (1/1) ... [2019-11-20 00:26:44,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:44" (1/1) ... [2019-11-20 00:26:44,241 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 00:26:44,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 00:26:44,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 00:26:44,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 00:26:44,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:44" (1/1) ... [2019-11-20 00:26:44,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:44" (1/1) ... [2019-11-20 00:26:44,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:44" (1/1) ... [2019-11-20 00:26:44,251 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:44" (1/1) ... [2019-11-20 00:26:44,254 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:44" (1/1) ... [2019-11-20 00:26:44,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:44" (1/1) ... [2019-11-20 00:26:44,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:44" (1/1) ... [2019-11-20 00:26:44,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 00:26:44,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 00:26:44,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 00:26:44,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 00:26:44,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 00:26:44,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 00:26:44,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 00:26:44,459 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 00:26:44,459 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-20 00:26:44,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:26:44 BoogieIcfgContainer [2019-11-20 00:26:44,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 00:26:44,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 00:26:44,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 00:26:44,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 00:26:44,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:26:43" (1/3) ... [2019-11-20 00:26:44,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb6d070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:26:44, skipping insertion in model container [2019-11-20 00:26:44,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:44" (2/3) ... [2019-11-20 00:26:44,469 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fb6d070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:26:44, skipping insertion in model container [2019-11-20 00:26:44,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:26:44" (3/3) ... [2019-11-20 00:26:44,471 INFO L109 eAbstractionObserver]: Analyzing ICFG float-no-simp1.c [2019-11-20 00:26:44,480 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 00:26:44,487 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 00:26:44,498 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 00:26:44,523 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 00:26:44,523 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 00:26:44,524 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 00:26:44,524 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 00:26:44,524 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 00:26:44,524 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 00:26:44,525 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 00:26:44,526 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 00:26:44,540 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-11-20 00:26:44,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-20 00:26:44,548 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:26:44,549 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-20 00:26:44,550 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:26:44,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:26:44,555 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-20 00:26:44,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 00:26:44,564 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635551989] [2019-11-20 00:26:44,565 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 00:26:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:26:44,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 00:26:44,655 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 00:26:44,656 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 00:26:44,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:26:44 BoogieIcfgContainer [2019-11-20 00:26:44,670 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 00:26:44,672 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 00:26:44,672 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 00:26:44,673 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 00:26:44,673 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:26:44" (3/4) ... [2019-11-20 00:26:44,676 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 00:26:44,677 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 00:26:44,679 INFO L168 Benchmark]: Toolchain (without parser) took 728.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 947.4 MB in the beginning and 1.1 GB in the end (delta: -159.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:26:44,680 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:26:44,681 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 947.4 MB in the beginning and 1.1 GB in the end (delta: -188.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-11-20 00:26:44,681 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:26:44,685 INFO L168 Benchmark]: Boogie Preprocessor took 14.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:26:44,686 INFO L168 Benchmark]: RCFGBuilder took 203.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-11-20 00:26:44,687 INFO L168 Benchmark]: TraceAbstraction took 210.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-20 00:26:44,688 INFO L168 Benchmark]: Witness Printer took 4.56 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:26:44,698 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 259.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.0 MB). Free memory was 947.4 MB in the beginning and 1.1 GB in the end (delta: -188.6 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.77 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 203.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 210.75 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Witness Printer took 4.56 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 10]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of to_int at line 7, overapproximation of to_real at line 8. Possible FailurePath: [L4] unsigned int i, j; [L5] double d; [L7] i=100.0 [L8] d=i [L9] j=d [L10] COND TRUE !(j==100) [L10] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 00:26:46,628 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 00:26:46,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 00:26:46,641 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 00:26:46,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 00:26:46,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 00:26:46,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 00:26:46,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 00:26:46,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 00:26:46,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 00:26:46,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 00:26:46,650 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 00:26:46,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 00:26:46,652 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 00:26:46,653 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 00:26:46,654 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 00:26:46,655 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 00:26:46,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 00:26:46,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 00:26:46,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 00:26:46,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 00:26:46,663 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 00:26:46,664 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 00:26:46,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 00:26:46,667 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 00:26:46,668 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 00:26:46,668 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 00:26:46,669 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 00:26:46,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 00:26:46,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 00:26:46,671 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 00:26:46,672 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 00:26:46,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 00:26:46,674 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 00:26:46,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 00:26:46,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 00:26:46,677 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 00:26:46,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 00:26:46,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 00:26:46,679 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 00:26:46,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 00:26:46,680 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 00:26:46,696 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 00:26:46,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 00:26:46,698 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 00:26:46,698 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 00:26:46,698 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 00:26:46,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 00:26:46,699 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 00:26:46,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 00:26:46,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 00:26:46,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 00:26:46,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 00:26:46,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 00:26:46,700 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 00:26:46,700 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 00:26:46,701 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 00:26:46,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 00:26:46,701 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 00:26:46,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 00:26:46,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 00:26:46,703 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 00:26:46,703 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 00:26:46,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 00:26:46,704 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 00:26:46,704 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 00:26:46,704 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 00:26:46,705 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 00:26:46,705 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 00:26:46,705 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 00:26:46,706 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 00:26:46,706 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 00:26:46,706 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer 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(__VERIFIER_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 -> 5fc76096080d06d307c9a613c10bbb5b03d622cd [2019-11-20 00:26:46,977 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 00:26:46,994 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 00:26:46,997 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 00:26:47,000 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 00:26:47,000 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 00:26:47,001 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer/../../sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c [2019-11-20 00:26:47,063 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer/data/07d842fdf/84ffbe04f5714cae8e54168547fa5c98/FLAG3679ba455 [2019-11-20 00:26:47,488 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 00:26:47,489 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/sv-benchmarks/c/floats-cbmc-regression/float-no-simp1.c [2019-11-20 00:26:47,493 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer/data/07d842fdf/84ffbe04f5714cae8e54168547fa5c98/FLAG3679ba455 [2019-11-20 00:26:47,876 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer/data/07d842fdf/84ffbe04f5714cae8e54168547fa5c98 [2019-11-20 00:26:47,878 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 00:26:47,879 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 00:26:47,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 00:26:47,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 00:26:47,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 00:26:47,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:26:47" (1/1) ... [2019-11-20 00:26:47,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ea5be2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:47, skipping insertion in model container [2019-11-20 00:26:47,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:26:47" (1/1) ... [2019-11-20 00:26:47,894 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 00:26:47,905 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 00:26:48,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:26:48,068 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 00:26:48,082 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 00:26:48,097 INFO L192 MainTranslator]: Completed translation [2019-11-20 00:26:48,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:48 WrapperNode [2019-11-20 00:26:48,097 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 00:26:48,098 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 00:26:48,098 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 00:26:48,098 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 00:26:48,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:48" (1/1) ... [2019-11-20 00:26:48,115 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:48" (1/1) ... [2019-11-20 00:26:48,131 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 00:26:48,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 00:26:48,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 00:26:48,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 00:26:48,195 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:48" (1/1) ... [2019-11-20 00:26:48,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:48" (1/1) ... [2019-11-20 00:26:48,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:48" (1/1) ... [2019-11-20 00:26:48,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:48" (1/1) ... [2019-11-20 00:26:48,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:48" (1/1) ... [2019-11-20 00:26:48,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:48" (1/1) ... [2019-11-20 00:26:48,203 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:48" (1/1) ... [2019-11-20 00:26:48,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 00:26:48,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 00:26:48,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 00:26:48,206 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 00:26:48,207 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 00:26:48,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 00:26:48,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 00:26:48,358 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 00:26:48,358 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-20 00:26:48,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:26:48 BoogieIcfgContainer [2019-11-20 00:26:48,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 00:26:48,360 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 00:26:48,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 00:26:48,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 00:26:48,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:26:47" (1/3) ... [2019-11-20 00:26:48,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c54d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:26:48, skipping insertion in model container [2019-11-20 00:26:48,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:26:48" (2/3) ... [2019-11-20 00:26:48,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79c54d2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:26:48, skipping insertion in model container [2019-11-20 00:26:48,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:26:48" (3/3) ... [2019-11-20 00:26:48,364 INFO L109 eAbstractionObserver]: Analyzing ICFG float-no-simp1.c [2019-11-20 00:26:48,373 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 00:26:48,379 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 00:26:48,388 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 00:26:48,406 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 00:26:48,406 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 00:26:48,406 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 00:26:48,406 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 00:26:48,406 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 00:26:48,406 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 00:26:48,407 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 00:26:48,407 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 00:26:48,420 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2019-11-20 00:26:48,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-20 00:26:48,425 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 00:26:48,426 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-20 00:26:48,426 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 00:26:48,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 00:26:48,432 INFO L82 PathProgramCache]: Analyzing trace with hash 30881, now seen corresponding path program 1 times [2019-11-20 00:26:48,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 00:26:48,443 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900139615] [2019-11-20 00:26:48,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-20 00:26:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-20 00:26:48,499 WARN L253 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-20 00:26:48,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-20 00:26:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:26:48,540 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-20 00:26:48,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-20 00:26:48,553 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900139615] [2019-11-20 00:26:48,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-20 00:26:48,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-11-20 00:26:48,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299844639] [2019-11-20 00:26:48,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-20 00:26:48,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-20 00:26:48,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-20 00:26:48,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 00:26:48,578 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2019-11-20 00:26:48,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-20 00:26:48,596 INFO L93 Difference]: Finished difference Result 10 states and 9 transitions. [2019-11-20 00:26:48,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-20 00:26:48,598 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-11-20 00:26:48,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-20 00:26:48,605 INFO L225 Difference]: With dead ends: 10 [2019-11-20 00:26:48,605 INFO L226 Difference]: Without dead ends: 0 [2019-11-20 00:26:48,608 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-20 00:26:48,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-20 00:26:48,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-20 00:26:48,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-20 00:26:48,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-20 00:26:48,633 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 3 [2019-11-20 00:26:48,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-20 00:26:48,633 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-20 00:26:48,633 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-20 00:26:48,634 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-20 00:26:48,634 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-20 00:26:48,847 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-20 00:26:48,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-20 00:26:48,854 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-20 00:26:48,854 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-20 00:26:48,854 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-20 00:26:48,854 INFO L444 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2019-11-20 00:26:48,854 INFO L444 ceAbstractionStarter]: For program point L10-1(line 10) no Hoare annotation was computed. [2019-11-20 00:26:48,854 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2019-11-20 00:26:48,855 INFO L444 ceAbstractionStarter]: For program point L2(lines 2 11) no Hoare annotation was computed. [2019-11-20 00:26:48,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 12:26:48 BoogieIcfgContainer [2019-11-20 00:26:48,857 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 00:26:48,857 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 00:26:48,858 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 00:26:48,858 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 00:26:48,858 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:26:48" (3/4) ... [2019-11-20 00:26:48,861 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-20 00:26:48,869 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2019-11-20 00:26:48,869 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-20 00:26:48,901 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_3aeb9157-5828-4e08-b9ae-f5c964dd5b02/bin/uautomizer/witness.graphml [2019-11-20 00:26:48,901 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 00:26:48,903 INFO L168 Benchmark]: Toolchain (without parser) took 1023.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -148.2 MB). Peak memory consumption was 9.1 MB. Max. memory is 11.5 GB. [2019-11-20 00:26:48,904 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:26:48,904 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.39 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-20 00:26:48,905 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.60 ms. Allocated memory is still 1.0 GB. Free memory is still 949.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:26:48,905 INFO L168 Benchmark]: Boogie Preprocessor took 73.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -197.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-20 00:26:48,906 INFO L168 Benchmark]: RCFGBuilder took 153.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. [2019-11-20 00:26:48,907 INFO L168 Benchmark]: TraceAbstraction took 497.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. [2019-11-20 00:26:48,907 INFO L168 Benchmark]: Witness Printer took 43.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 00:26:48,910 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 217.39 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.60 ms. Allocated memory is still 1.0 GB. Free memory is still 949.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 73.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 157.3 MB). Free memory was 949.7 MB in the beginning and 1.1 GB in the end (delta: -197.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * RCFGBuilder took 153.63 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 497.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 11.5 GB. * Witness Printer took 43.73 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Result: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 3 SDtfs, 3 SDslu, 0 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7occurred in iteration=0, 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: 0.0s HoareAnnotationTime, 0 LocationsWithAnnotation, 0 PreInvPairs, 0 NumberOfFragments, 0 HoareAnnotationTreeSize, 0 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 0 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 3 NumberOfNonLiveVariables, 7 ConjunctsInSsa, 4 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...