./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_square_int.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square_int.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9d6111f1172e07b7206075be423d21f33b529e79943d78b2db976fd996371e2d .................................................................................................................................................................................................................................................................................... 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_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square_int.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9d6111f1172e07b7206075be423d21f33b529e79943d78b2db976fd996371e2d ...................................................................................................................................................................................................................................................................................................................................................... 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 23:40:47,308 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:40:47,311 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:40:47,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:40:47,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:40:47,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:40:47,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:40:47,375 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:40:47,378 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:40:47,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:40:47,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:40:47,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:40:47,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:40:47,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:40:47,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:40:47,402 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:40:47,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:40:47,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:40:47,409 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:40:47,414 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:40:47,419 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:40:47,421 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:40:47,424 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:40:47,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:40:47,433 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:40:47,436 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:40:47,437 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:40:47,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:40:47,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:40:47,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:40:47,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:40:47,443 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:40:47,445 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:40:47,446 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:40:47,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:40:47,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:40:47,449 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:40:47,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:40:47,450 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:40:47,451 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:40:47,451 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:40:47,452 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 23:40:47,492 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:40:47,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:40:47,493 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:40:47,493 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:40:47,495 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:40:47,495 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:40:47,495 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:40:47,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:40:47,496 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:40:47,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 23:40:47,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:40:47,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:40:47,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:40:47,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:40:47,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:40:47,497 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:40:47,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:40:47,498 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:40:47,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:40:47,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:40:47,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:40:47,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:40:47,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:40:47,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:40:47,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:40:47,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:40:47,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 23:40:47,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 23:40:47,501 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:40:47,501 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:40:47,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:40:47,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:40:47,502 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_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d6111f1172e07b7206075be423d21f33b529e79943d78b2db976fd996371e2d [2021-10-28 23:40:47,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:40:47,796 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:40:47,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:40:47,800 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:40:47,801 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:40:47,802 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/float-benchs/inv_square_int.c [2021-10-28 23:40:47,885 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/data/ada1f4337/80d53025022e46549a56432a1d8025f5/FLAG1effe8781 [2021-10-28 23:40:48,314 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:40:48,315 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/sv-benchmarks/c/float-benchs/inv_square_int.c [2021-10-28 23:40:48,320 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/data/ada1f4337/80d53025022e46549a56432a1d8025f5/FLAG1effe8781 [2021-10-28 23:40:48,721 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/data/ada1f4337/80d53025022e46549a56432a1d8025f5 [2021-10-28 23:40:48,723 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:40:48,725 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:40:48,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:40:48,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:40:48,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:40:48,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:40:48" (1/1) ... [2021-10-28 23:40:48,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36bcb5e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:48, skipping insertion in model container [2021-10-28 23:40:48,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:40:48" (1/1) ... [2021-10-28 23:40:48,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:40:48,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:40:48,950 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_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/sv-benchmarks/c/float-benchs/inv_square_int.c[482,495] [2021-10-28 23:40:48,969 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:40:48,985 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:40:49,006 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_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/sv-benchmarks/c/float-benchs/inv_square_int.c[482,495] [2021-10-28 23:40:49,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:40:49,027 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:40:49,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:49 WrapperNode [2021-10-28 23:40:49,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:40:49,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:40:49,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:40:49,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:40:49,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:49" (1/1) ... [2021-10-28 23:40:49,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:49" (1/1) ... [2021-10-28 23:40:49,072 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:40:49,073 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:40:49,073 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:40:49,074 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:40:49,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:49" (1/1) ... [2021-10-28 23:40:49,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:49" (1/1) ... [2021-10-28 23:40:49,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:49" (1/1) ... [2021-10-28 23:40:49,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:49" (1/1) ... [2021-10-28 23:40:49,101 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:49" (1/1) ... [2021-10-28 23:40:49,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:49" (1/1) ... [2021-10-28 23:40:49,111 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:49" (1/1) ... [2021-10-28 23:40:49,113 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:40:49,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:40:49,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:40:49,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:40:49,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:49" (1/1) ... [2021-10-28 23:40:49,127 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:40:49,139 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:40:49,159 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:40:49,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:40:49,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 23:40:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:40:49,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:40:49,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:40:49,383 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:40:49,384 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-28 23:40:49,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:40:49 BoogieIcfgContainer [2021-10-28 23:40:49,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:40:49,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:40:49,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:40:49,391 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:40:49,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:40:48" (1/3) ... [2021-10-28 23:40:49,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2411f27f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:40:49, skipping insertion in model container [2021-10-28 23:40:49,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:49" (2/3) ... [2021-10-28 23:40:49,393 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2411f27f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:40:49, skipping insertion in model container [2021-10-28 23:40:49,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:40:49" (3/3) ... [2021-10-28 23:40:49,395 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square_int.c [2021-10-28 23:40:49,400 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:40:49,400 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:40:49,448 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:40:49,454 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 23:40:49,455 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:40:49,468 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:40:49,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 23:40:49,472 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:40:49,473 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:40:49,474 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:40:49,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:40:49,480 INFO L85 PathProgramCache]: Analyzing trace with hash 889508713, now seen corresponding path program 1 times [2021-10-28 23:40:49,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:40:49,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10340117] [2021-10-28 23:40:49,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:40:49,489 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:40:49,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:40:49,629 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 23:40:49,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 23:40:49,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10340117] [2021-10-28 23:40:49,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10340117] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 23:40:49,631 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:40:49,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-28 23:40:49,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125649033] [2021-10-28 23:40:49,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:40:49,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 23:40:49,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:40:49,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:40:49,653 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:40:49,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:40:49,666 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-28 23:40:49,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:40:49,667 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 23:40:49,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:40:49,675 INFO L225 Difference]: With dead ends: 19 [2021-10-28 23:40:49,675 INFO L226 Difference]: Without dead ends: 7 [2021-10-28 23:40:49,678 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 23:40:49,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-28 23:40:49,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-28 23:40:49,705 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 23:40:49,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-28 23:40:49,707 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-10-28 23:40:49,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:40:49,708 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-28 23:40:49,708 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 23:40:49,708 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-28 23:40:49,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 23:40:49,709 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:40:49,709 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:40:49,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 23:40:49,710 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:40:49,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:40:49,711 INFO L85 PathProgramCache]: Analyzing trace with hash 889568295, now seen corresponding path program 1 times [2021-10-28 23:40:49,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 23:40:49,712 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097468798] [2021-10-28 23:40:49,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:40:49,712 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 23:40:49,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:40:49,768 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 23:40:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 23:40:49,846 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 23:40:49,846 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 23:40:49,848 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:40:49,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 23:40:49,853 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 23:40:49,856 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:40:49,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:40:49 BoogieIcfgContainer [2021-10-28 23:40:49,901 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:40:49,902 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:40:49,902 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:40:49,902 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:40:49,903 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:40:49" (3/4) ... [2021-10-28 23:40:49,906 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-28 23:40:49,906 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:40:49,908 INFO L168 Benchmark]: Toolchain (without parser) took 1182.06 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 44.6 MB in the beginning and 61.8 MB in the end (delta: -17.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:40:49,918 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 81.8 MB. Free memory was 60.6 MB in the beginning and 60.5 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:40:49,920 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.47 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 44.5 MB in the beginning and 73.2 MB in the end (delta: -28.7 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:40:49,920 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.93 ms. Allocated memory is still 98.6 MB. Free memory was 73.2 MB in the beginning and 71.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:40:49,921 INFO L168 Benchmark]: Boogie Preprocessor took 41.09 ms. Allocated memory is still 98.6 MB. Free memory was 71.6 MB in the beginning and 70.8 MB in the end (delta: 799.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:40:49,922 INFO L168 Benchmark]: RCFGBuilder took 271.00 ms. Allocated memory is still 98.6 MB. Free memory was 70.6 MB in the beginning and 61.8 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:40:49,922 INFO L168 Benchmark]: TraceAbstraction took 513.89 ms. Allocated memory is still 98.6 MB. Free memory was 61.4 MB in the beginning and 62.3 MB in the end (delta: -909.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:40:49,923 INFO L168 Benchmark]: Witness Printer took 4.19 ms. Allocated memory is still 98.6 MB. Free memory was 62.3 MB in the beginning and 61.8 MB in the end (delta: 483.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:40:49,928 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 81.8 MB. Free memory was 60.6 MB in the beginning and 60.5 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 291.47 ms. Allocated memory was 81.8 MB in the beginning and 98.6 MB in the end (delta: 16.8 MB). Free memory was 44.5 MB in the beginning and 73.2 MB in the end (delta: -28.7 MB). Peak memory consumption was 5.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.93 ms. Allocated memory is still 98.6 MB. Free memory was 73.2 MB in the beginning and 71.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.09 ms. Allocated memory is still 98.6 MB. Free memory was 71.6 MB in the beginning and 70.8 MB in the end (delta: 799.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 271.00 ms. Allocated memory is still 98.6 MB. Free memory was 70.6 MB in the beginning and 61.8 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 513.89 ms. Allocated memory is still 98.6 MB. Free memory was 61.4 MB in the beginning and 62.3 MB in the end (delta: -909.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 4.19 ms. Allocated memory is still 98.6 MB. Free memory was 62.3 MB in the beginning and 61.8 MB in the end (delta: 483.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 24, overapproximation of someBinaryArithmeticFLOAToperation at line 23. Possible FailurePath: [L17] int x; [L18] float y, z; [L20] x = __VERIFIER_nondet_int() [L11] COND FALSE !(!cond) [L23] y = x*x - 2.f [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 10 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=11occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-28 23:40:49,980 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/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 23:40:52,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 23:40:52,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 23:40:52,507 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 23:40:52,508 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 23:40:52,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 23:40:52,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 23:40:52,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 23:40:52,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 23:40:52,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 23:40:52,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 23:40:52,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 23:40:52,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 23:40:52,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 23:40:52,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 23:40:52,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 23:40:52,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 23:40:52,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 23:40:52,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 23:40:52,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 23:40:52,563 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 23:40:52,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 23:40:52,567 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 23:40:52,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 23:40:52,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 23:40:52,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 23:40:52,579 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 23:40:52,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 23:40:52,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 23:40:52,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 23:40:52,583 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 23:40:52,584 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 23:40:52,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 23:40:52,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 23:40:52,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 23:40:52,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 23:40:52,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 23:40:52,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 23:40:52,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 23:40:52,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 23:40:52,592 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 23:40:52,593 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-10-28 23:40:52,644 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 23:40:52,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 23:40:52,645 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 23:40:52,645 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 23:40:52,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 23:40:52,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 23:40:52,647 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 23:40:52,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 23:40:52,648 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 23:40:52,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 23:40:52,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 23:40:52,650 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 23:40:52,650 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 23:40:52,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 23:40:52,651 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-28 23:40:52,651 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-28 23:40:52,651 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 23:40:52,651 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 23:40:52,651 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 23:40:52,652 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 23:40:52,652 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 23:40:52,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 23:40:52,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 23:40:52,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:40:52,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 23:40:52,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 23:40:52,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 23:40:52,654 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-10-28 23:40:52,654 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-28 23:40:52,654 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 23:40:52,654 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 23:40:52,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 23:40:52,655 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 23:40:52,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-28 23:40:52,655 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_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9d6111f1172e07b7206075be423d21f33b529e79943d78b2db976fd996371e2d [2021-10-28 23:40:53,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 23:40:53,078 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 23:40:53,081 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 23:40:53,082 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 23:40:53,083 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 23:40:53,084 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/float-benchs/inv_square_int.c [2021-10-28 23:40:53,157 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/data/b9e799998/c322821f06a94f0f8cab4d00aa1eabf6/FLAG6afe83c24 [2021-10-28 23:40:53,600 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 23:40:53,601 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/sv-benchmarks/c/float-benchs/inv_square_int.c [2021-10-28 23:40:53,608 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/data/b9e799998/c322821f06a94f0f8cab4d00aa1eabf6/FLAG6afe83c24 [2021-10-28 23:40:54,002 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/data/b9e799998/c322821f06a94f0f8cab4d00aa1eabf6 [2021-10-28 23:40:54,012 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 23:40:54,014 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 23:40:54,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 23:40:54,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 23:40:54,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 23:40:54,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:40:54" (1/1) ... [2021-10-28 23:40:54,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51c52473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:54, skipping insertion in model container [2021-10-28 23:40:54,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 11:40:54" (1/1) ... [2021-10-28 23:40:54,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 23:40:54,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 23:40:54,247 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_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/sv-benchmarks/c/float-benchs/inv_square_int.c[482,495] [2021-10-28 23:40:54,257 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:40:54,275 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 23:40:54,287 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_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/sv-benchmarks/c/float-benchs/inv_square_int.c[482,495] [2021-10-28 23:40:54,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 23:40:54,318 INFO L208 MainTranslator]: Completed translation [2021-10-28 23:40:54,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:54 WrapperNode [2021-10-28 23:40:54,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 23:40:54,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 23:40:54,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 23:40:54,321 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 23:40:54,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:54" (1/1) ... [2021-10-28 23:40:54,347 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:54" (1/1) ... [2021-10-28 23:40:54,364 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 23:40:54,365 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 23:40:54,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 23:40:54,366 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 23:40:54,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:54" (1/1) ... [2021-10-28 23:40:54,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:54" (1/1) ... [2021-10-28 23:40:54,389 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:54" (1/1) ... [2021-10-28 23:40:54,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:54" (1/1) ... [2021-10-28 23:40:54,396 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:54" (1/1) ... [2021-10-28 23:40:54,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:54" (1/1) ... [2021-10-28 23:40:54,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:54" (1/1) ... [2021-10-28 23:40:54,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 23:40:54,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 23:40:54,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 23:40:54,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 23:40:54,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:54" (1/1) ... [2021-10-28 23:40:54,425 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 23:40:54,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 23:40:54,448 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 23:40:54,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 23:40:54,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-28 23:40:54,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 23:40:54,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 23:40:54,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 23:40:55,729 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 23:40:55,729 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-10-28 23:40:55,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:40:55 BoogieIcfgContainer [2021-10-28 23:40:55,731 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 23:40:55,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 23:40:55,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 23:40:55,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 23:40:55,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 11:40:54" (1/3) ... [2021-10-28 23:40:55,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33222144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:40:55, skipping insertion in model container [2021-10-28 23:40:55,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 11:40:54" (2/3) ... [2021-10-28 23:40:55,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33222144 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 11:40:55, skipping insertion in model container [2021-10-28 23:40:55,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:40:55" (3/3) ... [2021-10-28 23:40:55,739 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square_int.c [2021-10-28 23:40:55,744 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 23:40:55,744 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 23:40:55,782 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 23:40:55,788 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 23:40:55,788 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 23:40:55,799 INFO L276 IsEmpty]: Start isEmpty. Operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:40:55,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 23:40:55,802 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:40:55,803 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:40:55,803 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:40:55,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:40:55,808 INFO L85 PathProgramCache]: Analyzing trace with hash 889508713, now seen corresponding path program 1 times [2021-10-28 23:40:55,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:40:55,818 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [758790471] [2021-10-28 23:40:55,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:40:55,818 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:40:55,818 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:40:55,821 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:40:55,854 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-28 23:40:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:40:55,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-28 23:40:55,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:40:56,078 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 23:40:56,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:40:56,113 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 23:40:56,114 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:40:56,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [758790471] [2021-10-28 23:40:56,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [758790471] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:40:56,116 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:40:56,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-28 23:40:56,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314208857] [2021-10-28 23:40:56,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-28 23:40:56,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:40:56,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-28 23:40:56,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-28 23:40:56,148 INFO L87 Difference]: Start difference. First operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:40:56,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:40:56,161 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-10-28 23:40:56,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-28 23:40:56,163 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 23:40:56,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:40:56,168 INFO L225 Difference]: With dead ends: 19 [2021-10-28 23:40:56,169 INFO L226 Difference]: Without dead ends: 7 [2021-10-28 23:40:56,171 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 23:40:56,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2021-10-28 23:40:56,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2021-10-28 23:40:56,193 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 23:40:56,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 6 transitions. [2021-10-28 23:40:56,195 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 6 transitions. Word has length 6 [2021-10-28 23:40:56,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:40:56,195 INFO L470 AbstractCegarLoop]: Abstraction has 7 states and 6 transitions. [2021-10-28 23:40:56,196 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 23:40:56,196 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 6 transitions. [2021-10-28 23:40:56,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-28 23:40:56,196 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 23:40:56,196 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-28 23:40:56,208 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-28 23:40:56,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:40:56,406 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 23:40:56,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 23:40:56,407 INFO L85 PathProgramCache]: Analyzing trace with hash 889568295, now seen corresponding path program 1 times [2021-10-28 23:40:56,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-10-28 23:40:56,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1269715618] [2021-10-28 23:40:56,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 23:40:56,408 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-28 23:40:56,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/mathsat [2021-10-28 23:40:56,409 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-28 23:40:56,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-28 23:40:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 23:40:56,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-28 23:40:56,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 23:41:25,125 WARN L207 SmtUtils]: Spent 22.06 s on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2021-10-28 23:41:31,780 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ BitVec 32))) (fp.eq (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (bvmul ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) ((_ to_fp 8 24) roundNearestTiesToEven 2.0)) (_ +zero 8 24))) is different from false [2021-10-28 23:41:33,794 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~x~0 (_ BitVec 32))) (fp.eq (fp.sub roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (bvmul ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) ((_ to_fp 8 24) roundNearestTiesToEven 2.0)) (_ +zero 8 24))) is different from true [2021-10-28 23:41:33,795 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 23:41:33,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-28 23:41:42,234 WARN L838 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32))) (not (fp.eq (fp.sub c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (bvmul ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) ((_ to_fp 8 24) c_currentRoundingMode 2.0)) (_ +zero 8 24)))) is different from false [2021-10-28 23:41:44,248 WARN L860 $PredicateComparison]: unable to prove that (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32))) (not (fp.eq (fp.sub c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (bvmul ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) ((_ to_fp 8 24) c_currentRoundingMode 2.0)) (_ +zero 8 24)))) is different from true [2021-10-28 23:41:49,373 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 23:41:49,374 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-10-28 23:41:49,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1269715618] [2021-10-28 23:41:49,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1269715618] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-28 23:41:49,375 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-28 23:41:49,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 7 [2021-10-28 23:41:49,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075894114] [2021-10-28 23:41:49,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-28 23:41:49,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-10-28 23:41:49,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-28 23:41:49,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=11, Unknown=6, NotChecked=14, Total=42 [2021-10-28 23:41:49,378 INFO L87 Difference]: Start difference. First operand 7 states and 6 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:41:51,393 WARN L838 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~x~0 (_ BitVec 32))) (not (fp.eq (fp.sub c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (bvmul ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~x~0)) ((_ to_fp 8 24) c_currentRoundingMode 2.0)) (_ +zero 8 24)))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-10-28 23:42:21,331 WARN L207 SmtUtils]: Spent 23.88 s on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2021-10-28 23:42:21,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 23:42:21,333 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2021-10-28 23:42:21,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 23:42:21,334 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-28 23:42:21,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 23:42:21,334 INFO L225 Difference]: With dead ends: 7 [2021-10-28 23:42:21,334 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 23:42:21,335 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.5s TimeCoverageRelationStatistics Valid=17, Invalid=16, Unknown=9, NotChecked=30, Total=72 [2021-10-28 23:42:21,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 23:42:21,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 23:42:21,336 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 23:42:21,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 23:42:21,336 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-10-28 23:42:21,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 23:42:21,336 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 23:42:21,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 23:42:21,337 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 23:42:21,337 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 23:42:21,339 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 23:42:21,356 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-28 23:42:21,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/mathsat -unsat_core_generation=3 [2021-10-28 23:42:21,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 23:42:21,545 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:42:21,580 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 23:42:21,586 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 23:42:21,586 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 23:42:21,587 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 23:42:21,587 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 23:42:21,587 INFO L860 garLoopResultBuilder]: At program point L26(lines 15 27) the Hoare annotation is: true [2021-10-28 23:42:21,587 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-28 23:42:21,588 INFO L857 garLoopResultBuilder]: For program point L13(line 13) no Hoare annotation was computed. [2021-10-28 23:42:21,588 INFO L857 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2021-10-28 23:42:21,588 INFO L857 garLoopResultBuilder]: For program point L11(line 11) no Hoare annotation was computed. [2021-10-28 23:42:21,588 INFO L857 garLoopResultBuilder]: For program point L10(lines 10 12) no Hoare annotation was computed. [2021-10-28 23:42:21,588 INFO L860 garLoopResultBuilder]: At program point L13-3(line 13) the Hoare annotation is: true [2021-10-28 23:42:21,591 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-28 23:42:21,593 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 23:42:21,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 11:42:21 BoogieIcfgContainer [2021-10-28 23:42:21,600 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 23:42:21,601 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 23:42:21,601 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 23:42:21,601 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 23:42:21,602 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 11:40:55" (3/4) ... [2021-10-28 23:42:21,605 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 23:42:21,617 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-28 23:42:21,618 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-28 23:42:21,618 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-28 23:42:21,618 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 23:42:21,653 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 23:42:21,653 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 23:42:21,654 INFO L168 Benchmark]: Toolchain (without parser) took 87639.64 ms. Allocated memory is still 81.8 MB. Free memory was 47.3 MB in the beginning and 48.8 MB in the end (delta: -1.5 MB). Peak memory consumption was 288.4 kB. Max. memory is 16.1 GB. [2021-10-28 23:42:21,655 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 81.8 MB. Free memory was 63.7 MB in the beginning and 63.6 MB in the end (delta: 69.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:42:21,656 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.65 ms. Allocated memory is still 81.8 MB. Free memory was 47.1 MB in the beginning and 66.7 MB in the end (delta: -19.6 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. [2021-10-28 23:42:21,657 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.94 ms. Allocated memory is still 81.8 MB. Free memory was 66.7 MB in the beginning and 65.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:42:21,658 INFO L168 Benchmark]: Boogie Preprocessor took 46.79 ms. Allocated memory is still 81.8 MB. Free memory was 65.2 MB in the beginning and 64.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 23:42:21,658 INFO L168 Benchmark]: RCFGBuilder took 1318.03 ms. Allocated memory is still 81.8 MB. Free memory was 64.1 MB in the beginning and 54.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 23:42:21,659 INFO L168 Benchmark]: TraceAbstraction took 85867.51 ms. Allocated memory is still 81.8 MB. Free memory was 54.3 MB in the beginning and 51.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. [2021-10-28 23:42:21,660 INFO L168 Benchmark]: Witness Printer took 52.58 ms. Allocated memory is still 81.8 MB. Free memory was 51.3 MB in the beginning and 48.8 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 23:42:21,663 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 81.8 MB. Free memory was 63.7 MB in the beginning and 63.6 MB in the end (delta: 69.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 302.65 ms. Allocated memory is still 81.8 MB. Free memory was 47.1 MB in the beginning and 66.7 MB in the end (delta: -19.6 MB). Peak memory consumption was 8.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.94 ms. Allocated memory is still 81.8 MB. Free memory was 66.7 MB in the beginning and 65.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.79 ms. Allocated memory is still 81.8 MB. Free memory was 65.2 MB in the beginning and 64.1 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1318.03 ms. Allocated memory is still 81.8 MB. Free memory was 64.1 MB in the beginning and 54.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 85867.51 ms. Allocated memory is still 81.8 MB. Free memory was 54.3 MB in the beginning and 51.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 16.1 GB. * Witness Printer took 52.58 ms. Allocated memory is still 81.8 MB. Free memory was 51.3 MB in the beginning and 48.8 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, 11 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 85.8s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 32.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 4 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 67.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=0, InterpolantAutomatonStates: 7, 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, 52.9s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 4 QuantifiedInterpolants, 83 SizeOfPredicates, 6 NumberOfNonLiveVariables, 62 ConjunctsInSsa, 6 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: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-28 23:42:21,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ed3c4dc4-fe2a-431f-8c0b-92da06aa8dbd/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...