./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_square-2.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_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/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_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/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_156c5505-2c32-4a25-bf71-2069a10f31aa/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 f1e69edbdce27e5f928ff7e136ee6812498ce7c35f38e45c8aa6d453823549eb .................................................................................................................................................................................................................................................................................... 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_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/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_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/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_156c5505-2c32-4a25-bf71-2069a10f31aa/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 f1e69edbdce27e5f928ff7e136ee6812498ce7c35f38e45c8aa6d453823549eb ................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 08:34:58,025 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:34:58,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:34:58,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:34:58,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:34:58,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:34:58,064 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:34:58,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:34:58,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:34:58,070 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:34:58,071 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:34:58,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:34:58,073 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:34:58,075 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:34:58,076 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:34:58,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:34:58,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:34:58,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:34:58,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:34:58,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:34:58,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:34:58,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:34:58,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:34:58,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:34:58,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:34:58,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:34:58,114 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:34:58,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:34:58,117 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:34:58,118 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:34:58,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:34:58,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:34:58,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:34:58,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:34:58,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:34:58,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:34:58,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:34:58,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:34:58,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:34:58,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:34:58,129 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:34:58,130 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 08:34:58,167 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:34:58,167 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:34:58,167 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:34:58,168 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:34:58,169 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:34:58,169 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:34:58,169 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:34:58,170 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:34:58,170 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:34:58,170 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:34:58,170 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:34:58,171 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:34:58,171 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:34:58,171 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:34:58,171 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:34:58,172 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:34:58,172 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:34:58,172 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:34:58,172 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:34:58,173 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:34:58,173 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:34:58,173 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:34:58,173 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:34:58,174 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:34:58,174 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:34:58,174 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:34:58,174 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:34:58,174 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:34:58,175 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:34:58,175 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:34:58,175 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:34:58,175 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:34:58,176 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_156c5505-2c32-4a25-bf71-2069a10f31aa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1e69edbdce27e5f928ff7e136ee6812498ce7c35f38e45c8aa6d453823549eb [2021-10-28 08:34:58,427 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:34:58,448 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:34:58,451 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:34:58,452 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:34:58,453 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:34:58,454 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/float-benchs/inv_square-2.c [2021-10-28 08:34:58,527 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/data/aadcd1f66/34f15a13a94e461d963bca2785f24751/FLAG38eeaa79b [2021-10-28 08:34:58,982 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:34:58,983 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/sv-benchmarks/c/float-benchs/inv_square-2.c [2021-10-28 08:34:58,989 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/data/aadcd1f66/34f15a13a94e461d963bca2785f24751/FLAG38eeaa79b [2021-10-28 08:34:59,377 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/data/aadcd1f66/34f15a13a94e461d963bca2785f24751 [2021-10-28 08:34:59,379 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:34:59,380 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:34:59,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:34:59,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:34:59,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:34:59,388 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:34:59" (1/1) ... [2021-10-28 08:34:59,390 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b78e6a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:59, skipping insertion in model container [2021-10-28 08:34:59,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:34:59" (1/1) ... [2021-10-28 08:34:59,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:34:59,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:34:59,589 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_156c5505-2c32-4a25-bf71-2069a10f31aa/sv-benchmarks/c/float-benchs/inv_square-2.c[484,497] [2021-10-28 08:34:59,606 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:34:59,619 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:34:59,632 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_156c5505-2c32-4a25-bf71-2069a10f31aa/sv-benchmarks/c/float-benchs/inv_square-2.c[484,497] [2021-10-28 08:34:59,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:34:59,646 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:34:59,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:59 WrapperNode [2021-10-28 08:34:59,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:34:59,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:34:59,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:34:59,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:34:59,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:59" (1/1) ... [2021-10-28 08:34:59,661 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:59" (1/1) ... [2021-10-28 08:34:59,682 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:34:59,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:34:59,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:34:59,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:34:59,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:59" (1/1) ... [2021-10-28 08:34:59,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:59" (1/1) ... [2021-10-28 08:34:59,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:59" (1/1) ... [2021-10-28 08:34:59,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:59" (1/1) ... [2021-10-28 08:34:59,696 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:59" (1/1) ... [2021-10-28 08:34:59,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:59" (1/1) ... [2021-10-28 08:34:59,699 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:59" (1/1) ... [2021-10-28 08:34:59,701 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:34:59,702 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:34:59,702 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:34:59,702 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:34:59,703 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:59" (1/1) ... [2021-10-28 08:34:59,711 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:34:59,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:34:59,733 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:34:59,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:34:59,777 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:34:59,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:34:59,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:34:59,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:34:59,955 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:34:59,955 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-28 08:34:59,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:34:59 BoogieIcfgContainer [2021-10-28 08:34:59,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:34:59,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:34:59,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:34:59,973 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:34:59,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:34:59" (1/3) ... [2021-10-28 08:34:59,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0a871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:34:59, skipping insertion in model container [2021-10-28 08:34:59,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:34:59" (2/3) ... [2021-10-28 08:34:59,975 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d0a871 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:34:59, skipping insertion in model container [2021-10-28 08:34:59,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:34:59" (3/3) ... [2021-10-28 08:34:59,976 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square-2.c [2021-10-28 08:34:59,981 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:34:59,981 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 08:35:00,029 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:35:00,036 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 08:35:00,036 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 08:35:00,050 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:00,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 08:35:00,054 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:35:00,055 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 08:35:00,055 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:35:00,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:00,061 INFO L85 PathProgramCache]: Analyzing trace with hash 889510699, now seen corresponding path program 1 times [2021-10-28 08:35:00,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:00,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653560305] [2021-10-28 08:35:00,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:00,070 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:00,273 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 08:35:00,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:35:00,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653560305] [2021-10-28 08:35:00,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653560305] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:35:00,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:35:00,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 08:35:00,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971294337] [2021-10-28 08:35:00,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 08:35:00,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:35:00,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 08:35:00,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:35:00,309 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:00,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:35:00,327 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-10-28 08:35:00,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 08:35:00,329 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-28 08:35:00,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:35:00,337 INFO L225 Difference]: With dead ends: 21 [2021-10-28 08:35:00,337 INFO L226 Difference]: Without dead ends: 7 [2021-10-28 08:35:00,341 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 08:35:00,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-28 08:35:00,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-28 08:35:00,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:00,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-28 08:35:00,370 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-10-28 08:35:00,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:35:00,371 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-28 08:35:00,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:00,372 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-28 08:35:00,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 08:35:00,372 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:35:00,373 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 08:35:00,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:35:00,373 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:35:00,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:00,379 INFO L85 PathProgramCache]: Analyzing trace with hash 889570281, now seen corresponding path program 1 times [2021-10-28 08:35:00,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:35:00,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933159600] [2021-10-28 08:35:00,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:00,380 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:35:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:00,435 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:35:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:35:00,502 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:35:00,502 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 08:35:00,504 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:35:00,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:35:00,509 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 08:35:00,514 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:35:00,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:35:00 BoogieIcfgContainer [2021-10-28 08:35:00,542 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:35:00,543 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:35:00,543 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:35:00,543 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:35:00,544 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:34:59" (3/4) ... [2021-10-28 08:35:00,547 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 08:35:00,547 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:35:00,550 INFO L168 Benchmark]: Toolchain (without parser) took 1168.11 ms. Allocated memory was 77.6 MB in the beginning and 98.6 MB in the end (delta: 21.0 MB). Free memory was 42.1 MB in the beginning and 66.7 MB in the end (delta: -24.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:35:00,551 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 77.6 MB. Free memory is still 58.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:35:00,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.37 ms. Allocated memory was 77.6 MB in the beginning and 98.6 MB in the end (delta: 21.0 MB). Free memory was 41.9 MB in the beginning and 75.5 MB in the end (delta: -33.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:35:00,555 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.67 ms. Allocated memory is still 98.6 MB. Free memory was 75.5 MB in the beginning and 73.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:35:00,560 INFO L168 Benchmark]: Boogie Preprocessor took 18.40 ms. Allocated memory is still 98.6 MB. Free memory was 73.9 MB in the beginning and 73.1 MB in the end (delta: 792.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:35:00,562 INFO L168 Benchmark]: RCFGBuilder took 255.38 ms. Allocated memory is still 98.6 MB. Free memory was 73.1 MB in the beginning and 64.1 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:35:00,563 INFO L168 Benchmark]: TraceAbstraction took 583.12 ms. Allocated memory is still 98.6 MB. Free memory was 63.6 MB in the beginning and 67.2 MB in the end (delta: -3.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:35:00,563 INFO L168 Benchmark]: Witness Printer took 4.81 ms. Allocated memory is still 98.6 MB. Free memory was 67.2 MB in the beginning and 66.7 MB in the end (delta: 503.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:35:00,571 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 77.6 MB. Free memory is still 58.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 263.37 ms. Allocated memory was 77.6 MB in the beginning and 98.6 MB in the end (delta: 21.0 MB). Free memory was 41.9 MB in the beginning and 75.5 MB in the end (delta: -33.6 MB). Peak memory consumption was 3.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 33.67 ms. Allocated memory is still 98.6 MB. Free memory was 75.5 MB in the beginning and 73.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.40 ms. Allocated memory is still 98.6 MB. Free memory was 73.9 MB in the beginning and 73.1 MB in the end (delta: 792.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 255.38 ms. Allocated memory is still 98.6 MB. Free memory was 73.1 MB in the beginning and 64.1 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 583.12 ms. Allocated memory is still 98.6 MB. Free memory was 63.6 MB in the beginning and 67.2 MB in the end (delta: -3.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.81 ms. Allocated memory is still 98.6 MB. Free memory was 67.2 MB in the beginning and 66.7 MB in the end (delta: 503.9 kB). 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 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 22, overapproximation of someBinaryArithmeticFLOAToperation at line 23. Possible FailurePath: [L17] float x, y, z; [L19] x = __VERIFIER_nondet_float() [L11] COND FALSE !(!cond) [L22] COND TRUE x <= -1e-20f || x >= 1e-20f [L23] y = x * x [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 08:35:00,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/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 08:35:03,221 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:35:03,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:35:03,261 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:35:03,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:35:03,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:35:03,272 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:35:03,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:35:03,282 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:35:03,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:35:03,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:35:03,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:35:03,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:35:03,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:35:03,299 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:35:03,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:35:03,303 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:35:03,304 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:35:03,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:35:03,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:35:03,313 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:35:03,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:35:03,316 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:35:03,317 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:35:03,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:35:03,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:35:03,321 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:35:03,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:35:03,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:35:03,324 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:35:03,325 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:35:03,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:35:03,340 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:35:03,341 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:35:03,343 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:35:03,343 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:35:03,344 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:35:03,345 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:35:03,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:35:03,347 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:35:03,348 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:35:03,349 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 08:35:03,401 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:35:03,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:35:03,402 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:35:03,402 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:35:03,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:35:03,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:35:03,405 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:35:03,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:35:03,406 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:35:03,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:35:03,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:35:03,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:35:03,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:35:03,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:35:03,408 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 08:35:03,409 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 08:35:03,409 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:35:03,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:35:03,409 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:35:03,409 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:35:03,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:35:03,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:35:03,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:35:03,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:35:03,411 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:35:03,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:35:03,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:35:03,411 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 08:35:03,412 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 08:35:03,412 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:35:03,412 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:35:03,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:35:03,413 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:35:03,413 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 08:35:03,413 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_156c5505-2c32-4a25-bf71-2069a10f31aa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f1e69edbdce27e5f928ff7e136ee6812498ce7c35f38e45c8aa6d453823549eb [2021-10-28 08:35:03,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:35:03,846 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:35:03,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:35:03,852 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:35:03,853 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:35:03,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/float-benchs/inv_square-2.c [2021-10-28 08:35:03,942 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/data/41f4f1c5f/c5eba07775314c6fbf9bfcb1608988a1/FLAGf1d87c6db [2021-10-28 08:35:04,510 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:35:04,511 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/sv-benchmarks/c/float-benchs/inv_square-2.c [2021-10-28 08:35:04,518 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/data/41f4f1c5f/c5eba07775314c6fbf9bfcb1608988a1/FLAGf1d87c6db [2021-10-28 08:35:04,885 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/data/41f4f1c5f/c5eba07775314c6fbf9bfcb1608988a1 [2021-10-28 08:35:04,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:35:04,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:35:04,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:35:04,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:35:04,897 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:35:04,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:35:04" (1/1) ... [2021-10-28 08:35:04,899 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ae03b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:04, skipping insertion in model container [2021-10-28 08:35:04,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:35:04" (1/1) ... [2021-10-28 08:35:04,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:35:04,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:35:05,066 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_156c5505-2c32-4a25-bf71-2069a10f31aa/sv-benchmarks/c/float-benchs/inv_square-2.c[484,497] [2021-10-28 08:35:05,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:35:05,094 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:35:05,109 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_156c5505-2c32-4a25-bf71-2069a10f31aa/sv-benchmarks/c/float-benchs/inv_square-2.c[484,497] [2021-10-28 08:35:05,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:35:05,141 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:35:05,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:05 WrapperNode [2021-10-28 08:35:05,142 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:35:05,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:35:05,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:35:05,146 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:35:05,155 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:05" (1/1) ... [2021-10-28 08:35:05,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:05" (1/1) ... [2021-10-28 08:35:05,248 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:35:05,250 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:35:05,250 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:35:05,251 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:35:05,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:05" (1/1) ... [2021-10-28 08:35:05,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:05" (1/1) ... [2021-10-28 08:35:05,287 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:05" (1/1) ... [2021-10-28 08:35:05,287 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:05" (1/1) ... [2021-10-28 08:35:05,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:05" (1/1) ... [2021-10-28 08:35:05,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:05" (1/1) ... [2021-10-28 08:35:05,300 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:05" (1/1) ... [2021-10-28 08:35:05,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:35:05,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:35:05,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:35:05,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:35:05,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:05" (1/1) ... [2021-10-28 08:35:05,320 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:35:05,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:35:05,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:35:05,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:35:05,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 08:35:05,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:35:05,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:35:05,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:35:07,703 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:35:07,703 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-28 08:35:07,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:35:07 BoogieIcfgContainer [2021-10-28 08:35:07,705 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:35:07,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:35:07,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:35:07,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:35:07,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:35:04" (1/3) ... [2021-10-28 08:35:07,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73151860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:35:07, skipping insertion in model container [2021-10-28 08:35:07,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:35:05" (2/3) ... [2021-10-28 08:35:07,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73151860 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:35:07, skipping insertion in model container [2021-10-28 08:35:07,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:35:07" (3/3) ... [2021-10-28 08:35:07,714 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square-2.c [2021-10-28 08:35:07,720 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:35:07,720 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 08:35:07,774 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:35:07,781 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 08:35:07,782 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 08:35:07,796 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:07,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 08:35:07,801 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:35:07,802 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 08:35:07,803 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:35:07,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:07,820 INFO L85 PathProgramCache]: Analyzing trace with hash 889510699, now seen corresponding path program 1 times [2021-10-28 08:35:07,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:35:07,832 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1756057079] [2021-10-28 08:35:07,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:07,833 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:35:07,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:35:07,843 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:35:07,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 08:35:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:07,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 08:35:07,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:08,047 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 08:35:08,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:35:08,070 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 08:35:08,071 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:35:08,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1756057079] [2021-10-28 08:35:08,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1756057079] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:35:08,072 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:35:08,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 08:35:08,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332046513] [2021-10-28 08:35:08,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 08:35:08,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:35:08,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 08:35:08,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:35:08,094 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:08,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:35:08,108 INFO L93 Difference]: Finished difference Result 21 states and 24 transitions. [2021-10-28 08:35:08,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 08:35:08,109 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-28 08:35:08,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:35:08,117 INFO L225 Difference]: With dead ends: 21 [2021-10-28 08:35:08,117 INFO L226 Difference]: Without dead ends: 7 [2021-10-28 08:35:08,120 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 08:35:08,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-28 08:35:08,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-28 08:35:08,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.0) internal successors, (6), 6 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:08,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-28 08:35:08,149 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-10-28 08:35:08,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:35:08,150 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-28 08:35:08,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:08,150 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-28 08:35:08,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 08:35:08,151 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:35:08,151 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 08:35:08,165 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-10-28 08:35:08,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:35:08,365 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:35:08,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:35:08,370 INFO L85 PathProgramCache]: Analyzing trace with hash 889570281, now seen corresponding path program 1 times [2021-10-28 08:35:08,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 08:35:08,371 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105018889] [2021-10-28 08:35:08,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:35:08,371 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 08:35:08,372 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/mathsat [2021-10-28 08:35:08,373 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 08:35:08,375 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 08:35:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:35:08,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-28 08:35:08,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 08:35:10,629 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 08:35:10,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 08:35:11,944 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 08:35:11,944 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 08:35:11,945 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105018889] [2021-10-28 08:35:11,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105018889] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 08:35:11,945 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:35:11,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 3] imperfect sequences [] total 7 [2021-10-28 08:35:11,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943718295] [2021-10-28 08:35:11,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 08:35:11,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 08:35:11,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 08:35:11,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-10-28 08:35:11,949 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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 08:35:12,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:35:12,335 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2021-10-28 08:35:12,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-28 08:35:12,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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 6 [2021-10-28 08:35:12,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:35:12,336 INFO L225 Difference]: With dead ends: 7 [2021-10-28 08:35:12,336 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 08:35:12,337 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-10-28 08:35:12,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 08:35:12,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 08:35:12,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:35:12,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 08:35:12,338 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-10-28 08:35:12,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:35:12,338 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 08:35:12,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 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 08:35:12,339 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 08:35:12,339 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 08:35:12,342 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:35:12,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 08:35:12,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/mathsat -unsat_core_generation=3 [2021-10-28 08:35:12,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 08:35:12,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:35:12,586 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 08:35:12,590 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 08:35:12,591 INFO L860 garLoopResultBuilder]: At program point L27(lines 15 28) the Hoare annotation is: true [2021-10-28 08:35:12,591 INFO L857 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-10-28 08:35:12,591 INFO L857 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2021-10-28 08:35:12,591 INFO L857 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2021-10-28 08:35:12,591 INFO L860 garLoopResultBuilder]: At program point L13-3(line 13) the Hoare annotation is: true [2021-10-28 08:35:12,591 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 08:35:12,592 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 08:35:12,592 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 08:35:12,592 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-28 08:35:12,592 INFO L857 garLoopResultBuilder]: For program point L22-1(lines 22 26) no Hoare annotation was computed. [2021-10-28 08:35:12,592 INFO L857 garLoopResultBuilder]: For program point L10(lines 22 26) no Hoare annotation was computed. [2021-10-28 08:35:12,595 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 08:35:12,597 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:35:12,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:35:12 BoogieIcfgContainer [2021-10-28 08:35:12,602 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:35:12,603 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:35:12,603 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:35:12,603 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:35:12,604 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:35:07" (3/4) ... [2021-10-28 08:35:12,607 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 08:35:12,617 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-28 08:35:12,618 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 08:35:12,618 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-28 08:35:12,618 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 08:35:12,651 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:35:12,651 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:35:12,653 INFO L168 Benchmark]: Toolchain (without parser) took 7762.67 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 36.7 MB in the beginning and 32.8 MB in the end (delta: 4.0 MB). Peak memory consumption was 15.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:35:12,654 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 58.7 MB. Free memory is still 38.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:35:12,654 INFO L168 Benchmark]: CACSL2BoogieTranslator took 249.49 ms. Allocated memory is still 58.7 MB. Free memory was 36.4 MB in the beginning and 41.9 MB in the end (delta: -5.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:35:12,655 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.30 ms. Allocated memory is still 58.7 MB. Free memory was 41.7 MB in the beginning and 42.0 MB in the end (delta: -300.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:35:12,655 INFO L168 Benchmark]: Boogie Preprocessor took 57.32 ms. Allocated memory is still 58.7 MB. Free memory was 42.0 MB in the beginning and 40.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:35:12,656 INFO L168 Benchmark]: RCFGBuilder took 2396.14 ms. Allocated memory is still 58.7 MB. Free memory was 40.8 MB in the beginning and 31.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:35:12,656 INFO L168 Benchmark]: TraceAbstraction took 4895.37 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 30.9 MB in the beginning and 35.2 MB in the end (delta: -4.3 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2021-10-28 08:35:12,657 INFO L168 Benchmark]: Witness Printer took 48.52 ms. Allocated memory is still 71.3 MB. Free memory was 35.2 MB in the beginning and 32.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:35:12,660 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 58.7 MB. Free memory is still 38.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 249.49 ms. Allocated memory is still 58.7 MB. Free memory was 36.4 MB in the beginning and 41.9 MB in the end (delta: -5.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 103.30 ms. Allocated memory is still 58.7 MB. Free memory was 41.7 MB in the beginning and 42.0 MB in the end (delta: -300.2 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.32 ms. Allocated memory is still 58.7 MB. Free memory was 42.0 MB in the beginning and 40.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 2396.14 ms. Allocated memory is still 58.7 MB. Free memory was 40.8 MB in the beginning and 31.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4895.37 ms. Allocated memory was 58.7 MB in the beginning and 71.3 MB in the end (delta: 12.6 MB). Free memory was 30.9 MB in the beginning and 35.2 MB in the end (delta: -4.3 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. * Witness Printer took 48.52 ms. Allocated memory is still 71.3 MB. Free memory was 35.2 MB in the beginning and 32.8 MB in the end (delta: 2.4 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 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 12 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 4.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 4 SDslu, 1 SDs, 0 SdLazy, 8 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 2 HoareAnnotationTreeSize, 2 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 3.5s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 78 SizeOfPredicates, 6 NumberOfNonLiveVariables, 64 ConjunctsInSsa, 10 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-28 08:35:12,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_156c5505-2c32-4a25-bf71-2069a10f31aa/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...