./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg --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 1b47128f3a13b8a14fa5679442cf3dce52b78403c71ab556b465499f91ebd451 ..................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg --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 1b47128f3a13b8a14fa5679442cf3dce52b78403c71ab556b465499f91ebd451 ........................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:37:11,214 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:37:11,218 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:37:11,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:37:11,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:37:11,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:37:11,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:37:11,291 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:37:11,294 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:37:11,299 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:37:11,301 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:37:11,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:37:11,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:37:11,306 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:37:11,308 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:37:11,312 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:37:11,315 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:37:11,316 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:37:11,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:37:11,326 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:37:11,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:37:11,330 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:37:11,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:37:11,335 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:37:11,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:37:11,344 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:37:11,345 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:37:11,347 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:37:11,348 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:37:11,349 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:37:11,350 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:37:11,351 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:37:11,353 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:37:11,354 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:37:11,356 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:37:11,356 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:37:11,357 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:37:11,357 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:37:11,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:37:11,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:37:11,359 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:37:11,361 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 08:37:11,404 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:37:11,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:37:11,405 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:37:11,406 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:37:11,408 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:37:11,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:37:11,409 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:37:11,409 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:37:11,409 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:37:11,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:37:11,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:37:11,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:37:11,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:37:11,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:37:11,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:37:11,412 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:37:11,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:37:11,412 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:37:11,412 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:37:11,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:37:11,413 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:37:11,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:37:11,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:37:11,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:37:11,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:37:11,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:37:11,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:37:11,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:37:11,415 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:37:11,415 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:37:11,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:37:11,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:37:11,416 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_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b47128f3a13b8a14fa5679442cf3dce52b78403c71ab556b465499f91ebd451 [2021-10-28 08:37:11,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:37:11,693 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:37:11,695 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:37:11,697 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:37:11,697 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:37:11,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2021-10-28 08:37:11,777 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/data/237315215/82ef887233cf4de4bab7f5de0a577348/FLAG38962845a [2021-10-28 08:37:12,352 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:37:12,353 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2021-10-28 08:37:12,366 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/data/237315215/82ef887233cf4de4bab7f5de0a577348/FLAG38962845a [2021-10-28 08:37:12,707 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/data/237315215/82ef887233cf4de4bab7f5de0a577348 [2021-10-28 08:37:12,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:37:12,711 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:37:12,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:37:12,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:37:12,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:37:12,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:37:12" (1/1) ... [2021-10-28 08:37:12,724 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7573bbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:12, skipping insertion in model container [2021-10-28 08:37:12,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:37:12" (1/1) ... [2021-10-28 08:37:12,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:37:12,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:37:12,937 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c[474,487] [2021-10-28 08:37:12,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:37:12,969 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:37:12,983 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c[474,487] [2021-10-28 08:37:12,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:37:13,006 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:37:13,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:13 WrapperNode [2021-10-28 08:37:13,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:37:13,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:37:13,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:37:13,009 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:37:13,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:13" (1/1) ... [2021-10-28 08:37:13,025 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:13" (1/1) ... [2021-10-28 08:37:13,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:37:13,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:37:13,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:37:13,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:37:13,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:13" (1/1) ... [2021-10-28 08:37:13,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:13" (1/1) ... [2021-10-28 08:37:13,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:13" (1/1) ... [2021-10-28 08:37:13,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:13" (1/1) ... [2021-10-28 08:37:13,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:13" (1/1) ... [2021-10-28 08:37:13,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:13" (1/1) ... [2021-10-28 08:37:13,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:13" (1/1) ... [2021-10-28 08:37:13,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:37:13,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:37:13,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:37:13,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:37:13,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:13" (1/1) ... [2021-10-28 08:37:13,087 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:37:13,099 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:37:13,113 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:37:13,131 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:37:13,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:37:13,169 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:37:13,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:37:13,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:37:13,477 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:37:13,478 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-28 08:37:13,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:37:13 BoogieIcfgContainer [2021-10-28 08:37:13,480 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:37:13,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:37:13,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:37:13,486 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:37:13,486 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:37:12" (1/3) ... [2021-10-28 08:37:13,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4d2ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:37:13, skipping insertion in model container [2021-10-28 08:37:13,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:13" (2/3) ... [2021-10-28 08:37:13,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a4d2ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:37:13, skipping insertion in model container [2021-10-28 08:37:13,488 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:37:13" (3/3) ... [2021-10-28 08:37:13,490 INFO L111 eAbstractionObserver]: Analyzing ICFG loop2-1.c [2021-10-28 08:37:13,495 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:37:13,496 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 08:37:13,568 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:37:13,576 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 08:37:13,590 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 08:37:13,605 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:37:13,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 08:37:13,611 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:37:13,611 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:37:13,612 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:37:13,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:37:13,624 INFO L85 PathProgramCache]: Analyzing trace with hash 119997515, now seen corresponding path program 1 times [2021-10-28 08:37:13,647 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:37:13,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455612878] [2021-10-28 08:37:13,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:37:13,651 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:37:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:37:13,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:37:13,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:37:13,863 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455612878] [2021-10-28 08:37:13,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455612878] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:37:13,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:37:13,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 08:37:13,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173811020] [2021-10-28 08:37:13,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 08:37:13,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:37:13,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 08:37:13,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:37:13,900 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:37:13,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:37:13,918 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2021-10-28 08:37:13,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 08:37:13,920 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-10-28 08:37:13,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:37:13,929 INFO L225 Difference]: With dead ends: 29 [2021-10-28 08:37:13,930 INFO L226 Difference]: Without dead ends: 12 [2021-10-28 08:37:13,933 INFO L786 BasicCegarLoop]: 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 [2021-10-28 08:37:13,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-28 08:37:13,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-28 08:37:13,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:37:13,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-10-28 08:37:13,970 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2021-10-28 08:37:13,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:37:13,972 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-10-28 08:37:13,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:37:13,972 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-10-28 08:37:13,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 08:37:13,974 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:37:13,974 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:37:13,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:37:13,975 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:37:13,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:37:13,979 INFO L85 PathProgramCache]: Analyzing trace with hash -2105434535, now seen corresponding path program 1 times [2021-10-28 08:37:13,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:37:13,980 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281183453] [2021-10-28 08:37:13,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:37:13,981 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:37:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:37:14,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:37:14,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:37:14,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281183453] [2021-10-28 08:37:14,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281183453] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:37:14,159 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:37:14,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:37:14,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444018684] [2021-10-28 08:37:14,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:37:14,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:37:14,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:37:14,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:37:14,163 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:37:14,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:37:14,180 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2021-10-28 08:37:14,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:37:14,194 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-28 08:37:14,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:37:14,195 INFO L225 Difference]: With dead ends: 23 [2021-10-28 08:37:14,195 INFO L226 Difference]: Without dead ends: 15 [2021-10-28 08:37:14,196 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:37:14,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-28 08:37:14,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 14. [2021-10-28 08:37:14,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:37:14,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-10-28 08:37:14,202 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2021-10-28 08:37:14,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:37:14,202 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-28 08:37:14,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:37:14,203 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-10-28 08:37:14,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 08:37:14,204 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:37:14,204 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:37:14,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:37:14,205 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:37:14,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:37:14,206 INFO L85 PathProgramCache]: Analyzing trace with hash -2048176233, now seen corresponding path program 1 times [2021-10-28 08:37:14,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:37:14,207 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575074225] [2021-10-28 08:37:14,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:37:14,207 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:37:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:37:14,245 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:37:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:37:14,288 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:37:14,288 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 08:37:14,290 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:37:14,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 08:37:14,297 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-28 08:37:14,300 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:37:14,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:37:14 BoogieIcfgContainer [2021-10-28 08:37:14,331 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:37:14,331 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:37:14,332 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:37:14,332 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:37:14,333 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:37:13" (3/4) ... [2021-10-28 08:37:14,336 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 08:37:14,337 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:37:14,339 INFO L168 Benchmark]: Toolchain (without parser) took 1626.25 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 61.7 MB in the beginning and 90.0 MB in the end (delta: -28.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:37:14,340 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 96.5 MB. Free memory was 67.1 MB in the beginning and 67.1 MB in the end (delta: 30.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:37:14,341 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.35 ms. Allocated memory is still 96.5 MB. Free memory was 61.5 MB in the beginning and 71.4 MB in the end (delta: -9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:37:14,342 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.67 ms. Allocated memory is still 96.5 MB. Free memory was 71.4 MB in the beginning and 69.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:37:14,343 INFO L168 Benchmark]: Boogie Preprocessor took 24.84 ms. Allocated memory is still 96.5 MB. Free memory was 69.8 MB in the beginning and 68.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:37:14,344 INFO L168 Benchmark]: RCFGBuilder took 406.97 ms. Allocated memory is still 96.5 MB. Free memory was 68.6 MB in the beginning and 58.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:37:14,344 INFO L168 Benchmark]: TraceAbstraction took 849.01 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 58.5 MB in the beginning and 90.0 MB in the end (delta: -31.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:37:14,345 INFO L168 Benchmark]: Witness Printer took 5.60 ms. Allocated memory is still 117.4 MB. Free memory is still 90.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:37:14,349 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 96.5 MB. Free memory was 67.1 MB in the beginning and 67.1 MB in the end (delta: 30.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 290.35 ms. Allocated memory is still 96.5 MB. Free memory was 61.5 MB in the beginning and 71.4 MB in the end (delta: -9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.67 ms. Allocated memory is still 96.5 MB. Free memory was 71.4 MB in the beginning and 69.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.84 ms. Allocated memory is still 96.5 MB. Free memory was 69.8 MB in the beginning and 68.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 406.97 ms. Allocated memory is still 96.5 MB. Free memory was 68.6 MB in the beginning and 58.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 849.01 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 58.5 MB in the beginning and 90.0 MB in the end (delta: -31.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.60 ms. Allocated memory is still 117.4 MB. Free memory is still 90.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 12]: 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 49, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L14] float pi = 3.14159 ; VAL [pi=314159/100000] [L20] float x = __VERIFIER_nondet_float() ; [L21] float octant = pi/3 ; [L10] COND FALSE !(!cond) VAL [pi=314159/100000] [L23] float oddExp = x ; [L24] float evenExp = 1.0 ; [L25] float term = x ; [L26] unsigned int count = 2 ; [L27] int multFactor = 0 ; [L28] int temp ; VAL [pi=314159/100000] [L30] COND TRUE 1 [L32] term = term * (x/count) VAL [pi=314159/100000] [L33] EXPR (count>>1 % 2 == 0) ? 1 : -1 VAL [pi=314159/100000] [L33] multFactor = (count>>1 % 2 == 0) ? 1 : -1 [L35] evenExp = evenExp + multFactor*term [L37] count++ [L39] term = term * (x/count) [L41] oddExp = oddExp + multFactor*term [L43] count++ [L45] temp = __VERIFIER_nondet_int() [L46] COND TRUE temp == 0 VAL [pi=314159/100000] [L12] COND TRUE !(cond) VAL [pi=314159/100000] [L12] reach_error() VAL [pi=314159/100000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 1 SDslu, 8 SDs, 0 SdLazy, 6 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 21 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 08:37:14,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:37:17,088 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:37:17,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:37:17,155 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:37:17,156 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:37:17,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:37:17,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:37:17,174 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:37:17,178 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:37:17,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:37:17,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:37:17,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:37:17,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:37:17,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:37:17,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:37:17,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:37:17,207 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:37:17,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:37:17,215 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:37:17,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:37:17,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:37:17,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:37:17,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:37:17,230 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:37:17,235 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:37:17,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:37:17,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:37:17,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:37:17,242 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:37:17,243 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:37:17,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:37:17,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:37:17,247 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:37:17,248 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:37:17,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:37:17,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:37:17,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:37:17,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:37:17,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:37:17,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:37:17,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:37:17,258 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 08:37:17,309 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:37:17,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:37:17,310 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:37:17,310 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:37:17,312 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:37:17,312 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:37:17,312 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:37:17,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:37:17,313 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:37:17,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:37:17,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:37:17,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:37:17,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:37:17,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:37:17,314 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 08:37:17,315 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 08:37:17,315 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:37:17,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:37:17,315 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:37:17,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:37:17,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:37:17,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:37:17,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:37:17,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:37:17,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:37:17,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:37:17,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:37:17,317 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 08:37:17,318 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 08:37:17,318 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:37:17,318 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:37:17,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:37:17,319 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:37:17,319 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 08:37:17,319 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_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1b47128f3a13b8a14fa5679442cf3dce52b78403c71ab556b465499f91ebd451 [2021-10-28 08:37:17,764 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:37:17,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:37:17,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:37:17,815 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:37:17,816 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:37:17,817 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2021-10-28 08:37:17,913 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/data/484f95cce/220585e8ce534086a30a8acfc84686a7/FLAG23a355ad7 [2021-10-28 08:37:18,530 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:37:18,531 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c [2021-10-28 08:37:18,541 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/data/484f95cce/220585e8ce534086a30a8acfc84686a7/FLAG23a355ad7 [2021-10-28 08:37:18,837 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/data/484f95cce/220585e8ce534086a30a8acfc84686a7 [2021-10-28 08:37:18,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:37:18,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:37:18,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:37:18,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:37:18,869 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:37:18,870 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:37:18" (1/1) ... [2021-10-28 08:37:18,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54aa8267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:18, skipping insertion in model container [2021-10-28 08:37:18,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:37:18" (1/1) ... [2021-10-28 08:37:18,881 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:37:18,902 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:37:19,112 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c[474,487] [2021-10-28 08:37:19,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:37:19,156 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:37:19,171 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/sv-benchmarks/c/loop-floats-scientific-comp/loop2-1.c[474,487] [2021-10-28 08:37:19,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:37:19,215 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:37:19,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:19 WrapperNode [2021-10-28 08:37:19,239 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:37:19,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:37:19,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:37:19,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:37:19,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:19" (1/1) ... [2021-10-28 08:37:19,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:19" (1/1) ... [2021-10-28 08:37:19,293 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:37:19,294 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:37:19,294 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:37:19,295 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:37:19,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:19" (1/1) ... [2021-10-28 08:37:19,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:19" (1/1) ... [2021-10-28 08:37:19,310 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:19" (1/1) ... [2021-10-28 08:37:19,310 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:19" (1/1) ... [2021-10-28 08:37:19,334 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:19" (1/1) ... [2021-10-28 08:37:19,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:19" (1/1) ... [2021-10-28 08:37:19,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:19" (1/1) ... [2021-10-28 08:37:19,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:37:19,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:37:19,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:37:19,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:37:19,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:19" (1/1) ... [2021-10-28 08:37:19,383 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:37:19,397 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:37:19,416 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:37:19,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:37:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 08:37:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:37:19,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:37:19,487 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:37:24,732 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:37:24,733 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-10-28 08:37:24,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:37:24 BoogieIcfgContainer [2021-10-28 08:37:24,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:37:24,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:37:24,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:37:24,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:37:24,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:37:18" (1/3) ... [2021-10-28 08:37:24,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4d7074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:37:24, skipping insertion in model container [2021-10-28 08:37:24,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:37:19" (2/3) ... [2021-10-28 08:37:24,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4d7074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:37:24, skipping insertion in model container [2021-10-28 08:37:24,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:37:24" (3/3) ... [2021-10-28 08:37:24,745 INFO L111 eAbstractionObserver]: Analyzing ICFG loop2-1.c [2021-10-28 08:37:24,750 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:37:24,751 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 08:37:24,805 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:37:24,813 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 08:37:24,814 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 08:37:24,830 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:37:24,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-28 08:37:24,837 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:37:24,838 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:37:24,839 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:37:24,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:37:24,846 INFO L85 PathProgramCache]: Analyzing trace with hash 119997515, now seen corresponding path program 1 times [2021-10-28 08:37:24,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:37:24,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1948101589] [2021-10-28 08:37:24,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:37:24,863 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:37:24,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:37:24,873 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:37:24,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 08:37:25,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:37:25,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 08:37:25,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:37:25,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:37:25,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:37:25,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:37:25,218 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:37:25,218 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1948101589] [2021-10-28 08:37:25,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1948101589] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:37:25,220 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:37:25,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 08:37:25,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825793747] [2021-10-28 08:37:25,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 08:37:25,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:37:25,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 08:37:25,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:37:25,249 INFO L87 Difference]: Start difference. First operand has 16 states, 14 states have (on average 1.5) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:37:25,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:37:25,267 INFO L93 Difference]: Finished difference Result 29 states and 38 transitions. [2021-10-28 08:37:25,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 08:37:25,269 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-10-28 08:37:25,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:37:25,279 INFO L225 Difference]: With dead ends: 29 [2021-10-28 08:37:25,279 INFO L226 Difference]: Without dead ends: 12 [2021-10-28 08:37:25,282 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:37:25,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-28 08:37:25,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-28 08:37:25,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:37:25,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-10-28 08:37:25,320 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 8 [2021-10-28 08:37:25,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:37:25,320 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-10-28 08:37:25,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:37:25,321 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-10-28 08:37:25,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 08:37:25,322 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:37:25,322 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:37:25,346 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 08:37:25,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:37:25,539 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:37:25,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:37:25,540 INFO L85 PathProgramCache]: Analyzing trace with hash -2105434535, now seen corresponding path program 1 times [2021-10-28 08:37:25,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:37:25,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1186402191] [2021-10-28 08:37:25,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:37:25,541 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:37:25,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:37:25,545 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:37:25,592 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 08:37:26,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:37:26,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-28 08:37:26,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:37:26,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:37:26,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:37:26,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:37:26,792 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:37:26,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1186402191] [2021-10-28 08:37:26,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1186402191] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:37:26,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:37:26,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-28 08:37:26,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968378432] [2021-10-28 08:37:26,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-28 08:37:26,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:37:26,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-28 08:37:26,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:37:26,797 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:37:32,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:37:32,210 INFO L93 Difference]: Finished difference Result 24 states and 27 transitions. [2021-10-28 08:37:32,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-28 08:37:32,211 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-10-28 08:37:32,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:37:32,212 INFO L225 Difference]: With dead ends: 24 [2021-10-28 08:37:32,212 INFO L226 Difference]: Without dead ends: 16 [2021-10-28 08:37:32,213 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-28 08:37:32,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-28 08:37:32,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2021-10-28 08:37:32,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:37:32,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2021-10-28 08:37:32,219 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2021-10-28 08:37:32,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:37:32,219 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2021-10-28 08:37:32,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:37:32,220 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2021-10-28 08:37:32,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-28 08:37:32,221 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:37:32,221 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:37:32,253 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-10-28 08:37:32,434 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:37:32,435 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:37:32,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:37:32,436 INFO L85 PathProgramCache]: Analyzing trace with hash -2048176233, now seen corresponding path program 1 times [2021-10-28 08:37:32,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:37:32,437 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343996832] [2021-10-28 08:37:32,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:37:32,438 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:37:32,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:37:32,439 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:37:32,443 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-10-28 08:37:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:37:33,479 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:37:34,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:37:34,537 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-10-28 08:37:34,538 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 08:37:34,539 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:37:34,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-10-28 08:37:34,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:37:34,746 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-10-28 08:37:34,750 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:37:34,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:37:34 BoogieIcfgContainer [2021-10-28 08:37:34,828 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:37:34,829 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:37:34,830 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:37:34,830 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:37:34,831 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:37:24" (3/4) ... [2021-10-28 08:37:34,832 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 08:37:34,904 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:37:34,904 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:37:34,906 INFO L168 Benchmark]: Toolchain (without parser) took 16062.77 ms. Allocated memory is still 71.3 MB. Free memory was 51.8 MB in the beginning and 51.0 MB in the end (delta: 789.9 kB). Peak memory consumption was 1.0 MB. Max. memory is 16.1 GB. [2021-10-28 08:37:34,907 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 52.4 MB. Free memory is still 33.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:37:34,907 INFO L168 Benchmark]: CACSL2BoogieTranslator took 402.21 ms. Allocated memory is still 71.3 MB. Free memory was 51.6 MB in the beginning and 55.6 MB in the end (delta: -4.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:37:34,908 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.17 ms. Allocated memory is still 71.3 MB. Free memory was 55.6 MB in the beginning and 54.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:37:34,909 INFO L168 Benchmark]: Boogie Preprocessor took 73.80 ms. Allocated memory is still 71.3 MB. Free memory was 54.1 MB in the beginning and 52.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:37:34,909 INFO L168 Benchmark]: RCFGBuilder took 5366.81 ms. Allocated memory is still 71.3 MB. Free memory was 52.8 MB in the beginning and 42.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:37:34,910 INFO L168 Benchmark]: TraceAbstraction took 10090.38 ms. Allocated memory is still 71.3 MB. Free memory was 42.0 MB in the beginning and 53.1 MB in the end (delta: -11.1 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:37:34,910 INFO L168 Benchmark]: Witness Printer took 75.00 ms. Allocated memory is still 71.3 MB. Free memory was 53.1 MB in the beginning and 51.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:37:34,914 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 52.4 MB. Free memory is still 33.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 402.21 ms. Allocated memory is still 71.3 MB. Free memory was 51.6 MB in the beginning and 55.6 MB in the end (delta: -4.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.17 ms. Allocated memory is still 71.3 MB. Free memory was 55.6 MB in the beginning and 54.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 73.80 ms. Allocated memory is still 71.3 MB. Free memory was 54.1 MB in the beginning and 52.8 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 5366.81 ms. Allocated memory is still 71.3 MB. Free memory was 52.8 MB in the beginning and 42.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 10090.38 ms. Allocated memory is still 71.3 MB. Free memory was 42.0 MB in the beginning and 53.1 MB in the end (delta: -11.1 MB). Peak memory consumption was 14.5 MB. Max. memory is 16.1 GB. * Witness Printer took 75.00 ms. Allocated memory is still 71.3 MB. Free memory was 53.1 MB in the beginning and 51.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] float pi = 3.14159 ; VAL [pi=3.141590118408203] [L20] float x = __VERIFIER_nondet_float() ; [L21] float octant = pi/3 ; [L10] COND FALSE !(!cond) VAL [pi=3.141590118408203] [L23] float oddExp = x ; [L24] float evenExp = 1.0 ; [L25] float term = x ; [L26] unsigned int count = 2 ; [L27] int multFactor = 0 ; [L28] int temp ; VAL [pi=3.141590118408203] [L30] COND TRUE 1 [L32] term = term * (x/count) VAL [pi=3.141590118408203] [L33] EXPR (count>>1 % 2 == 0) ? 1 : -1 VAL [pi=3.141590118408203] [L33] multFactor = (count>>1 % 2 == 0) ? 1 : -1 [L35] evenExp = evenExp + multFactor*term [L37] count++ [L39] term = term * (x/count) [L41] oddExp = oddExp + multFactor*term [L43] count++ [L45] temp = __VERIFIER_nondet_int() [L46] COND TRUE temp == 0 VAL [pi=3.141590118408203] [L12] COND TRUE !(cond) VAL [pi=3.141590118408203] [L12] reach_error() VAL [pi=3.141590118408203] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 9.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 2 SDslu, 7 SDs, 0 SdLazy, 4 SolverSat, 1 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 5.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 1 NumberOfNonLiveVariables, 85 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-10-28 08:37:35,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c30c9d89-29b9-4afe-9a5b-02a8d082b645/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...