./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a552ed0b53624bc27612451ed4207d0101db39b ....................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a552ed0b53624bc27612451ed4207d0101db39b ........................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 10:54:56,713 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:54:56,714 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:54:56,721 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:54:56,721 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:54:56,722 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:54:56,722 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:54:56,724 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:54:56,725 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:54:56,725 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:54:56,726 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:54:56,726 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:54:56,727 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:54:56,727 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:54:56,728 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:54:56,728 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:54:56,728 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:54:56,729 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:54:56,731 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:54:56,732 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:54:56,732 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:54:56,733 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:54:56,734 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:54:56,734 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:54:56,735 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:54:56,735 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:54:56,735 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:54:56,736 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:54:56,736 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:54:56,737 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:54:56,737 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:54:56,738 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:54:56,738 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:54:56,738 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:54:56,739 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:54:56,739 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:54:56,740 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer/config/svcomp-Reach-32bit-PetriAutomizer_Default.epf [2018-11-18 10:54:56,750 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:54:56,750 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:54:56,750 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 10:54:56,751 INFO L133 SettingsManager]: * Process only entry and re-entry procedures=false [2018-11-18 10:54:56,751 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 10:54:56,751 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 10:54:56,751 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 10:54:56,751 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:54:56,752 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 10:54:56,752 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 10:54:56,752 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 10:54:56,752 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:54:56,752 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 10:54:56,752 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 10:54:56,752 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 10:54:56,753 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 10:54:56,753 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 10:54:56,753 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:54:56,753 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 10:54:56,753 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:54:56,753 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:54:56,753 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 10:54:56,753 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 10:54:56,754 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:54:56,754 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:54:56,754 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 10:54:56,754 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 10:54:56,754 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 10:54:56,754 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 10:54:56,754 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 10:54:56,755 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a552ed0b53624bc27612451ed4207d0101db39b [2018-11-18 10:54:56,780 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:54:56,789 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:54:56,792 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:54:56,793 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:54:56,793 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:54:56,794 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-11-18 10:54:56,837 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer/data/c759de22a/c88b2606d2ca47c8ab3b7d42fdfde272/FLAG88f6f8510 [2018-11-18 10:54:57,224 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:54:57,225 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-11-18 10:54:57,228 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer/data/c759de22a/c88b2606d2ca47c8ab3b7d42fdfde272/FLAG88f6f8510 [2018-11-18 10:54:57,238 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer/data/c759de22a/c88b2606d2ca47c8ab3b7d42fdfde272 [2018-11-18 10:54:57,241 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:54:57,242 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 10:54:57,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:54:57,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:54:57,244 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:54:57,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:54:57" (1/1) ... [2018-11-18 10:54:57,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@411459c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:57, skipping insertion in model container [2018-11-18 10:54:57,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:54:57" (1/1) ... [2018-11-18 10:54:57,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:54:57,269 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:54:57,400 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:54:57,403 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:54:57,415 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:54:57,427 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:54:57,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:57 WrapperNode [2018-11-18 10:54:57,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:54:57,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:54:57,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:54:57,428 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:54:57,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:57" (1/1) ... [2018-11-18 10:54:57,439 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:57" (1/1) ... [2018-11-18 10:54:57,443 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:57" (1/1) ... [2018-11-18 10:54:57,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:57" (1/1) ... [2018-11-18 10:54:57,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:57" (1/1) ... [2018-11-18 10:54:57,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:57" (1/1) ... [2018-11-18 10:54:57,449 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:57" (1/1) ... [2018-11-18 10:54:57,450 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:54:57,451 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:54:57,451 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:54:57,451 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:54:57,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:54:57,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 10:54:57,527 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:54:57,527 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 10:54:57,528 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 10:54:57,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 10:54:57,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 10:54:57,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 10:54:57,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 10:54:57,528 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 10:54:57,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 10:54:57,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:54:57,605 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:54:57,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:54:57 BoogieIcfgContainer [2018-11-18 10:54:57,605 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:54:57,606 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 10:54:57,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 10:54:57,607 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 10:54:57,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:54:57" (1/3) ... [2018-11-18 10:54:57,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91ab211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:54:57, skipping insertion in model container [2018-11-18 10:54:57,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:57" (2/3) ... [2018-11-18 10:54:57,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@91ab211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:54:57, skipping insertion in model container [2018-11-18 10:54:57,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:54:57" (3/3) ... [2018-11-18 10:54:57,609 INFO L112 eAbstractionObserver]: Analyzing ICFG float_int_inv_square_false-unreach-call_true-termination.c [2018-11-18 10:54:57,615 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 10:54:57,619 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 10:54:57,628 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 10:54:57,650 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 10:54:57,651 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 10:54:57,651 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 10:54:57,651 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 10:54:57,651 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:54:57,651 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:54:57,652 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 10:54:57,652 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:54:57,652 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 10:54:57,666 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-18 10:54:57,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 10:54:57,670 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:54:57,671 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:54:57,672 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:54:57,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:54:57,675 INFO L82 PathProgramCache]: Analyzing trace with hash 997393992, now seen corresponding path program 1 times [2018-11-18 10:54:57,677 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 10:54:57,677 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 10:54:57,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:54:57,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:54:57,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 10:54:57,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:54:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:54:57,748 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 10:54:57,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:54:57 BoogieIcfgContainer [2018-11-18 10:54:57,760 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 10:54:57,761 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 10:54:57,761 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 10:54:57,761 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 10:54:57,761 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:54:57" (3/4) ... [2018-11-18 10:54:57,764 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 10:54:57,764 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 10:54:57,764 INFO L168 Benchmark]: Toolchain (without parser) took 523.54 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -145.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:54:57,766 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:54:57,766 INFO L168 Benchmark]: CACSL2BoogieTranslator took 185.26 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:54:57,766 INFO L168 Benchmark]: Boogie Preprocessor took 22.60 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:54:57,767 INFO L168 Benchmark]: RCFGBuilder took 154.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -169.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. [2018-11-18 10:54:57,768 INFO L168 Benchmark]: TraceAbstraction took 155.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:54:57,768 INFO L168 Benchmark]: Witness Printer took 3.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:54:57,771 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 185.26 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.60 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 154.56 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -169.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 155.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Witness Printer took 3.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 16. Possible FailurePath: [L10] int x; [L11] float y, z; [L13] x = __VERIFIER_nondet_int() [L16] y = x*x - 4.f VAL [x=0] [L17] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 10:54:59,198 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 10:54:59,199 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 10:54:59,206 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 10:54:59,206 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 10:54:59,207 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 10:54:59,208 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 10:54:59,209 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 10:54:59,210 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 10:54:59,211 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 10:54:59,212 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 10:54:59,212 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 10:54:59,213 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 10:54:59,213 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 10:54:59,214 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 10:54:59,215 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 10:54:59,215 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 10:54:59,217 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 10:54:59,218 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 10:54:59,219 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 10:54:59,220 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 10:54:59,221 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 10:54:59,222 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 10:54:59,223 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 10:54:59,223 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 10:54:59,224 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 10:54:59,224 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 10:54:59,225 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 10:54:59,225 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 10:54:59,226 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 10:54:59,226 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 10:54:59,227 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 10:54:59,227 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 10:54:59,227 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 10:54:59,228 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 10:54:59,228 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 10:54:59,229 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-18 10:54:59,240 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 10:54:59,240 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 10:54:59,240 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 10:54:59,241 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-18 10:54:59,241 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 10:54:59,241 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 10:54:59,241 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 10:54:59,242 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 10:54:59,242 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 10:54:59,242 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 10:54:59,242 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 10:54:59,242 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 10:54:59,242 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 10:54:59,242 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 10:54:59,243 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 10:54:59,243 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 10:54:59,243 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 10:54:59,243 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 10:54:59,243 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 10:54:59,243 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 10:54:59,243 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 10:54:59,243 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 10:54:59,244 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 10:54:59,244 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 10:54:59,244 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:54:59,244 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 10:54:59,244 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 10:54:59,244 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 10:54:59,244 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-18 10:54:59,245 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 10:54:59,245 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 10:54:59,245 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 10:54:59,245 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a552ed0b53624bc27612451ed4207d0101db39b [2018-11-18 10:54:59,273 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 10:54:59,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 10:54:59,283 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 10:54:59,284 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 10:54:59,284 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 10:54:59,285 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer/../../sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-11-18 10:54:59,322 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer/data/7f19ef0d9/89f810995d474ee8bb8a2237b52efd21/FLAG96de5aea9 [2018-11-18 10:54:59,726 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 10:54:59,727 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-11-18 10:54:59,731 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer/data/7f19ef0d9/89f810995d474ee8bb8a2237b52efd21/FLAG96de5aea9 [2018-11-18 10:54:59,741 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer/data/7f19ef0d9/89f810995d474ee8bb8a2237b52efd21 [2018-11-18 10:54:59,744 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 10:54:59,745 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-18 10:54:59,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 10:54:59,746 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 10:54:59,750 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 10:54:59,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:54:59" (1/1) ... [2018-11-18 10:54:59,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@119b503f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:59, skipping insertion in model container [2018-11-18 10:54:59,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 10:54:59" (1/1) ... [2018-11-18 10:54:59,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 10:54:59,779 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 10:54:59,904 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:54:59,908 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 10:54:59,918 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 10:54:59,927 INFO L195 MainTranslator]: Completed translation [2018-11-18 10:54:59,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:59 WrapperNode [2018-11-18 10:54:59,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 10:54:59,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 10:54:59,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 10:54:59,928 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 10:54:59,936 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:59" (1/1) ... [2018-11-18 10:54:59,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:59" (1/1) ... [2018-11-18 10:54:59,940 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:59" (1/1) ... [2018-11-18 10:54:59,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:59" (1/1) ... [2018-11-18 10:54:59,945 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:59" (1/1) ... [2018-11-18 10:54:59,946 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:59" (1/1) ... [2018-11-18 10:54:59,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:59" (1/1) ... [2018-11-18 10:54:59,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 10:54:59,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 10:54:59,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 10:54:59,949 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 10:54:59,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:59" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 10:55:00,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 10:55:00,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 10:55:00,039 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 10:55:00,039 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 10:55:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-18 10:55:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-11-18 10:55:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-11-18 10:55:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 10:55:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 10:55:00,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 10:55:00,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 10:55:00,631 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 10:55:00,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:55:00 BoogieIcfgContainer [2018-11-18 10:55:00,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 10:55:00,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 10:55:00,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 10:55:00,635 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 10:55:00,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 10:54:59" (1/3) ... [2018-11-18 10:55:00,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34764a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:55:00, skipping insertion in model container [2018-11-18 10:55:00,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 10:54:59" (2/3) ... [2018-11-18 10:55:00,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34764a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 10:55:00, skipping insertion in model container [2018-11-18 10:55:00,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:55:00" (3/3) ... [2018-11-18 10:55:00,638 INFO L112 eAbstractionObserver]: Analyzing ICFG float_int_inv_square_false-unreach-call_true-termination.c [2018-11-18 10:55:00,644 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 10:55:00,648 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 10:55:00,657 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 10:55:00,675 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 10:55:00,675 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 10:55:00,676 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 10:55:00,676 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 10:55:00,676 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 10:55:00,676 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 10:55:00,676 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 10:55:00,676 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 10:55:00,676 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 10:55:00,688 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-18 10:55:00,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-18 10:55:00,692 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 10:55:00,693 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 10:55:00,695 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 10:55:00,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 10:55:00,699 INFO L82 PathProgramCache]: Analyzing trace with hash 997393992, now seen corresponding path program 1 times [2018-11-18 10:55:00,701 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-18 10:55:00,702 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-18 10:55:00,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 10:55:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:55:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 10:55:00,850 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 10:55:00,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 10:55:00 BoogieIcfgContainer [2018-11-18 10:55:00,868 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 10:55:00,868 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 10:55:00,868 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 10:55:00,868 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 10:55:00,869 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 10:55:00" (3/4) ... [2018-11-18 10:55:00,870 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 10:55:00,904 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_1dc12f8b-acb5-4fc8-928b-7429a8648c3e/bin-2019/uautomizer/witness.graphml [2018-11-18 10:55:00,904 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 10:55:00,905 INFO L168 Benchmark]: Toolchain (without parser) took 1160.14 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 949.2 MB in the beginning and 1.1 GB in the end (delta: -149.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:55:00,906 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:55:00,906 INFO L168 Benchmark]: CACSL2BoogieTranslator took 181.35 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 938.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-18 10:55:00,907 INFO L168 Benchmark]: Boogie Preprocessor took 21.02 ms. Allocated memory is still 1.0 GB. Free memory was 938.5 MB in the beginning and 933.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 10:55:00,907 INFO L168 Benchmark]: RCFGBuilder took 682.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 933.1 MB in the beginning and 1.1 GB in the end (delta: -184.2 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. [2018-11-18 10:55:00,908 INFO L168 Benchmark]: TraceAbstraction took 235.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2018-11-18 10:55:00,908 INFO L168 Benchmark]: Witness Printer took 36.10 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 10:55:00,911 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 181.35 ms. Allocated memory is still 1.0 GB. Free memory was 949.2 MB in the beginning and 938.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.02 ms. Allocated memory is still 1.0 GB. Free memory was 938.5 MB in the beginning and 933.1 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 682.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 147.3 MB). Free memory was 933.1 MB in the beginning and 1.1 GB in the end (delta: -184.2 MB). Peak memory consumption was 21.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 235.25 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * Witness Printer took 36.10 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int x; [L11] float y, z; [L13] x = __VERIFIER_nondet_int() [L16] y = x*x - 4.f VAL [x=2, y=0.0] [L17] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...