./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a552ed0b53624bc27612451ed4207d0101db39b ........................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square.c -s /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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 0.1.24-678e011 [2019-11-20 02:15:59,783 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 02:15:59,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 02:15:59,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 02:15:59,798 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 02:15:59,799 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 02:15:59,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 02:15:59,803 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 02:15:59,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 02:15:59,814 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 02:15:59,815 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 02:15:59,816 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 02:15:59,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 02:15:59,818 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 02:15:59,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 02:15:59,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 02:15:59,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 02:15:59,821 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 02:15:59,823 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 02:15:59,825 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 02:15:59,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 02:15:59,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 02:15:59,828 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 02:15:59,829 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 02:15:59,832 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 02:15:59,832 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 02:15:59,833 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 02:15:59,834 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 02:15:59,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 02:15:59,835 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 02:15:59,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 02:15:59,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 02:15:59,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 02:15:59,837 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 02:15:59,838 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 02:15:59,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 02:15:59,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 02:15:59,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 02:15:59,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 02:15:59,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 02:15:59,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 02:15:59,842 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 02:15:59,856 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 02:15:59,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 02:15:59,857 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 02:15:59,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 02:15:59,858 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 02:15:59,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 02:15:59,858 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 02:15:59,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 02:15:59,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 02:15:59,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 02:15:59,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 02:15:59,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 02:15:59,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 02:15:59,860 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 02:15:59,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 02:15:59,860 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 02:15:59,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 02:15:59,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 02:15:59,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 02:15:59,861 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 02:15:59,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 02:15:59,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 02:15:59,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 02:15:59,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 02:15:59,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 02:15:59,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 02:15:59,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 02:15:59,863 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 02:15:59,863 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a552ed0b53624bc27612451ed4207d0101db39b [2019-11-20 02:16:00,025 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 02:16:00,046 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 02:16:00,051 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 02:16:00,052 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 02:16:00,053 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 02:16:00,054 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer/../../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-11-20 02:16:00,128 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer/data/3922c5931/74675daa09cd47579b0d67d3fa22e62f/FLAG059364569 [2019-11-20 02:16:00,570 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 02:16:00,571 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-11-20 02:16:00,578 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer/data/3922c5931/74675daa09cd47579b0d67d3fa22e62f/FLAG059364569 [2019-11-20 02:16:00,939 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer/data/3922c5931/74675daa09cd47579b0d67d3fa22e62f [2019-11-20 02:16:00,942 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 02:16:00,944 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 02:16:00,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 02:16:00,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 02:16:00,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 02:16:00,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:16:00" (1/1) ... [2019-11-20 02:16:00,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cf01e8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:00, skipping insertion in model container [2019-11-20 02:16:00,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:16:00" (1/1) ... [2019-11-20 02:16:00,965 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 02:16:00,985 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 02:16:01,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:16:01,211 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 02:16:01,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:16:01,332 INFO L192 MainTranslator]: Completed translation [2019-11-20 02:16:01,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:01 WrapperNode [2019-11-20 02:16:01,333 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 02:16:01,334 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 02:16:01,334 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 02:16:01,334 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 02:16:01,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:01" (1/1) ... [2019-11-20 02:16:01,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:01" (1/1) ... [2019-11-20 02:16:01,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 02:16:01,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 02:16:01,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 02:16:01,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 02:16:01,385 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:01" (1/1) ... [2019-11-20 02:16:01,393 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:01" (1/1) ... [2019-11-20 02:16:01,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:01" (1/1) ... [2019-11-20 02:16:01,394 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:01" (1/1) ... [2019-11-20 02:16:01,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:01" (1/1) ... [2019-11-20 02:16:01,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:01" (1/1) ... [2019-11-20 02:16:01,403 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:01" (1/1) ... [2019-11-20 02:16:01,404 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 02:16:01,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 02:16:01,405 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 02:16:01,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 02:16:01,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 02:16:01,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 02:16:01,481 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 02:16:01,656 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 02:16:01,656 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 02:16:01,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:16:01 BoogieIcfgContainer [2019-11-20 02:16:01,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 02:16:01,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 02:16:01,659 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 02:16:01,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 02:16:01,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 02:16:00" (1/3) ... [2019-11-20 02:16:01,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1177e686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:16:01, skipping insertion in model container [2019-11-20 02:16:01,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:01" (2/3) ... [2019-11-20 02:16:01,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1177e686 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:16:01, skipping insertion in model container [2019-11-20 02:16:01,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:16:01" (3/3) ... [2019-11-20 02:16:01,665 INFO L109 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2019-11-20 02:16:01,676 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 02:16:01,683 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 02:16:01,696 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 02:16:01,721 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 02:16:01,722 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 02:16:01,722 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 02:16:01,722 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 02:16:01,722 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 02:16:01,722 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 02:16:01,722 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 02:16:01,723 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 02:16:01,738 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-20 02:16:01,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-20 02:16:01,743 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:16:01,744 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-20 02:16:01,745 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:16:01,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:16:01,751 INFO L82 PathProgramCache]: Analyzing trace with hash 30882, now seen corresponding path program 1 times [2019-11-20 02:16:01,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 02:16:01,761 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416389481] [2019-11-20 02:16:01,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 02:16:01,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:16:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:16:01,880 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 02:16:01,881 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 02:16:01,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 02:16:01 BoogieIcfgContainer [2019-11-20 02:16:01,894 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 02:16:01,895 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 02:16:01,895 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 02:16:01,895 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 02:16:01,896 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:16:01" (3/4) ... [2019-11-20 02:16:01,899 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 02:16:01,899 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 02:16:01,902 INFO L168 Benchmark]: Toolchain (without parser) took 957.13 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -173.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:16:01,903 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:16:01,904 INFO L168 Benchmark]: CACSL2BoogieTranslator took 385.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -205.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-20 02:16:01,904 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:16:01,905 INFO L168 Benchmark]: Boogie Preprocessor took 30.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:16:01,906 INFO L168 Benchmark]: RCFGBuilder took 252.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2019-11-20 02:16:01,906 INFO L168 Benchmark]: TraceAbstraction took 235.81 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. [2019-11-20 02:16:01,907 INFO L168 Benchmark]: Witness Printer took 4.85 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:16:01,911 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 1.0 GB. Free memory is still 967.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 385.60 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 153.6 MB). Free memory was 946.1 MB in the beginning and 1.2 GB in the end (delta: -205.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 39.99 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.54 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 252.46 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 235.81 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 4.85 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 someBinaryFLOATComparisonOperation at line 17, 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 [L6] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-678e011 [2019-11-20 02:16:04,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 02:16:04,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 02:16:04,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 02:16:04,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 02:16:04,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 02:16:04,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 02:16:04,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 02:16:04,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 02:16:04,072 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 02:16:04,073 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 02:16:04,075 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 02:16:04,075 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 02:16:04,077 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 02:16:04,079 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 02:16:04,081 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 02:16:04,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 02:16:04,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 02:16:04,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 02:16:04,090 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 02:16:04,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 02:16:04,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 02:16:04,099 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 02:16:04,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 02:16:04,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 02:16:04,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 02:16:04,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 02:16:04,107 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 02:16:04,107 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 02:16:04,108 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 02:16:04,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 02:16:04,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 02:16:04,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 02:16:04,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 02:16:04,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 02:16:04,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 02:16:04,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 02:16:04,113 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 02:16:04,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 02:16:04,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 02:16:04,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 02:16:04,116 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 02:16:04,140 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 02:16:04,140 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 02:16:04,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 02:16:04,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 02:16:04,142 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 02:16:04,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 02:16:04,142 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 02:16:04,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 02:16:04,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 02:16:04,143 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 02:16:04,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 02:16:04,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 02:16:04,144 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 02:16:04,144 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 02:16:04,145 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 02:16:04,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 02:16:04,145 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 02:16:04,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 02:16:04,146 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 02:16:04,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 02:16:04,146 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 02:16:04,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 02:16:04,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 02:16:04,147 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 02:16:04,147 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 02:16:04,148 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 02:16:04,148 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 02:16:04,148 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 02:16:04,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 02:16:04,149 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 02:16:04,149 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a552ed0b53624bc27612451ed4207d0101db39b [2019-11-20 02:16:04,421 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 02:16:04,438 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 02:16:04,441 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 02:16:04,443 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 02:16:04,443 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 02:16:04,444 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer/../../sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-11-20 02:16:04,506 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer/data/e08d0f344/961a32bdd8aa42d4bcd6a73917087dc9/FLAGfbed35bc8 [2019-11-20 02:16:04,925 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 02:16:04,926 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/sv-benchmarks/c/float-benchs/float_int_inv_square.c [2019-11-20 02:16:04,932 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer/data/e08d0f344/961a32bdd8aa42d4bcd6a73917087dc9/FLAGfbed35bc8 [2019-11-20 02:16:05,342 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer/data/e08d0f344/961a32bdd8aa42d4bcd6a73917087dc9 [2019-11-20 02:16:05,345 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 02:16:05,347 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 02:16:05,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 02:16:05,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 02:16:05,352 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 02:16:05,353 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:16:05" (1/1) ... [2019-11-20 02:16:05,356 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23e5527e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:05, skipping insertion in model container [2019-11-20 02:16:05,356 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:16:05" (1/1) ... [2019-11-20 02:16:05,364 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 02:16:05,388 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 02:16:05,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:16:05,566 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 02:16:05,583 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 02:16:05,599 INFO L192 MainTranslator]: Completed translation [2019-11-20 02:16:05,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:05 WrapperNode [2019-11-20 02:16:05,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 02:16:05,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 02:16:05,601 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 02:16:05,601 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 02:16:05,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:05" (1/1) ... [2019-11-20 02:16:05,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:05" (1/1) ... [2019-11-20 02:16:05,697 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 02:16:05,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 02:16:05,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 02:16:05,697 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 02:16:05,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:05" (1/1) ... [2019-11-20 02:16:05,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:05" (1/1) ... [2019-11-20 02:16:05,707 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:05" (1/1) ... [2019-11-20 02:16:05,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:05" (1/1) ... [2019-11-20 02:16:05,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:05" (1/1) ... [2019-11-20 02:16:05,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:05" (1/1) ... [2019-11-20 02:16:05,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:05" (1/1) ... [2019-11-20 02:16:05,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 02:16:05,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 02:16:05,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 02:16:05,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 02:16:05,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 02:16:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 02:16:05,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 02:16:07,208 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 02:16:07,208 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 02:16:07,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:16:07 BoogieIcfgContainer [2019-11-20 02:16:07,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 02:16:07,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 02:16:07,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 02:16:07,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 02:16:07,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 02:16:05" (1/3) ... [2019-11-20 02:16:07,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35da665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:16:07, skipping insertion in model container [2019-11-20 02:16:07,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:16:05" (2/3) ... [2019-11-20 02:16:07,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35da665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:16:07, skipping insertion in model container [2019-11-20 02:16:07,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:16:07" (3/3) ... [2019-11-20 02:16:07,218 INFO L109 eAbstractionObserver]: Analyzing ICFG float_int_inv_square.c [2019-11-20 02:16:07,226 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 02:16:07,231 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 02:16:07,243 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 02:16:07,268 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 02:16:07,268 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 02:16:07,268 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 02:16:07,268 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 02:16:07,268 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 02:16:07,269 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 02:16:07,269 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 02:16:07,269 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 02:16:07,281 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states. [2019-11-20 02:16:07,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-11-20 02:16:07,286 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 02:16:07,287 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-11-20 02:16:07,287 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 02:16:07,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 02:16:07,293 INFO L82 PathProgramCache]: Analyzing trace with hash 30882, now seen corresponding path program 1 times [2019-11-20 02:16:07,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 02:16:07,302 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1088190840] [2019-11-20 02:16:07,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-11-20 02:16:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:16:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 02:16:07,527 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 02:16:07,527 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 02:16:07,728 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-20 02:16:07,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 02:16:07 BoogieIcfgContainer [2019-11-20 02:16:07,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 02:16:07,747 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 02:16:07,747 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 02:16:07,748 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 02:16:07,748 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:16:07" (3/4) ... [2019-11-20 02:16:07,750 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 02:16:07,786 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_94d1468f-18bb-47b6-a605-d5974cb6e55c/bin/uautomizer/witness.graphml [2019-11-20 02:16:07,787 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 02:16:07,789 INFO L168 Benchmark]: Toolchain (without parser) took 2441.74 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 956.4 MB in the beginning and 1.1 GB in the end (delta: -158.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:16:07,789 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:16:07,790 INFO L168 Benchmark]: CACSL2BoogieTranslator took 252.30 ms. Allocated memory is still 1.0 GB. Free memory was 956.4 MB in the beginning and 945.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-20 02:16:07,790 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -207.1 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. [2019-11-20 02:16:07,791 INFO L168 Benchmark]: Boogie Preprocessor took 21.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2019-11-20 02:16:07,792 INFO L168 Benchmark]: RCFGBuilder took 1490.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. [2019-11-20 02:16:07,793 INFO L168 Benchmark]: TraceAbstraction took 536.12 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: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2019-11-20 02:16:07,793 INFO L168 Benchmark]: Witness Printer took 39.57 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 02:16:07,797 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 252.30 ms. Allocated memory is still 1.0 GB. Free memory was 956.4 MB in the beginning and 945.7 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 96.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 945.7 MB in the beginning and 1.2 GB in the end (delta: -207.1 MB). Peak memory consumption was 9.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.70 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1490.35 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 536.12 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: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * Witness Printer took 39.57 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 [L6] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=8occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...