./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/inv_square-1.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_d3995997-f498-426d-85ad-af21fa165655/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/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 5cdc4d12f446be57385f35c672efbdd6980b00fa ........................................................................................................................................................................................................................ 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_d3995997-f498-426d-85ad-af21fa165655/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/inv_square-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/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 5cdc4d12f446be57385f35c672efbdd6980b00fa .............................................................................................................................................................................................................................. 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 10:33:02,818 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 10:33:02,820 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 10:33:02,834 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 10:33:02,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 10:33:02,836 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 10:33:02,837 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 10:33:02,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 10:33:02,850 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 10:33:02,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 10:33:02,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 10:33:02,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 10:33:02,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 10:33:02,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 10:33:02,859 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 10:33:02,860 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 10:33:02,861 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 10:33:02,862 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 10:33:02,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 10:33:02,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 10:33:02,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 10:33:02,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 10:33:02,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 10:33:02,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 10:33:02,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 10:33:02,878 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 10:33:02,878 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 10:33:02,879 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 10:33:02,880 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 10:33:02,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 10:33:02,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 10:33:02,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 10:33:02,882 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 10:33:02,883 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 10:33:02,884 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 10:33:02,884 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 10:33:02,885 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 10:33:02,885 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 10:33:02,885 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 10:33:02,886 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 10:33:02,887 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 10:33:02,888 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-20 10:33:02,910 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 10:33:02,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 10:33:02,911 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 10:33:02,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 10:33:02,912 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 10:33:02,912 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 10:33:02,912 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 10:33:02,912 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-20 10:33:02,913 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 10:33:02,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 10:33:02,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 10:33:02,913 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 10:33:02,913 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 10:33:02,913 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 10:33:02,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 10:33:02,914 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 10:33:02,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 10:33:02,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 10:33:02,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 10:33:02,914 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 10:33:02,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 10:33:02,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 10:33:02,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 10:33:02,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 10:33:02,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 10:33:02,916 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-20 10:33:02,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-20 10:33:02,916 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 10:33:02,916 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_d3995997-f498-426d-85ad-af21fa165655/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 -> 5cdc4d12f446be57385f35c672efbdd6980b00fa [2019-11-20 10:33:03,090 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 10:33:03,104 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 10:33:03,107 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 10:33:03,109 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 10:33:03,110 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 10:33:03,111 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/bin/uautomizer/../../sv-benchmarks/c/float-benchs/inv_square-1.c [2019-11-20 10:33:03,173 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/bin/uautomizer/data/e7fa478ad/f2d771c59c694a068d3ba8b33c02027d/FLAG87ce082c1 [2019-11-20 10:33:03,490 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 10:33:03,491 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/sv-benchmarks/c/float-benchs/inv_square-1.c [2019-11-20 10:33:03,496 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/bin/uautomizer/data/e7fa478ad/f2d771c59c694a068d3ba8b33c02027d/FLAG87ce082c1 [2019-11-20 10:33:03,879 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/bin/uautomizer/data/e7fa478ad/f2d771c59c694a068d3ba8b33c02027d [2019-11-20 10:33:03,882 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 10:33:03,883 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 10:33:03,884 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 10:33:03,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 10:33:03,893 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 10:33:03,894 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:03" (1/1) ... [2019-11-20 10:33:03,897 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f7d441b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:03, skipping insertion in model container [2019-11-20 10:33:03,897 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:03" (1/1) ... [2019-11-20 10:33:03,904 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 10:33:03,921 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 10:33:04,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:33:04,083 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 10:33:04,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:33:04,175 INFO L192 MainTranslator]: Completed translation [2019-11-20 10:33:04,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:04 WrapperNode [2019-11-20 10:33:04,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 10:33:04,177 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 10:33:04,177 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 10:33:04,177 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 10:33:04,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:04" (1/1) ... [2019-11-20 10:33:04,190 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:04" (1/1) ... [2019-11-20 10:33:04,205 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 10:33:04,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 10:33:04,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 10:33:04,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 10:33:04,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:04" (1/1) ... [2019-11-20 10:33:04,215 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:04" (1/1) ... [2019-11-20 10:33:04,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:04" (1/1) ... [2019-11-20 10:33:04,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:04" (1/1) ... [2019-11-20 10:33:04,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:04" (1/1) ... [2019-11-20 10:33:04,221 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:04" (1/1) ... [2019-11-20 10:33:04,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:04" (1/1) ... [2019-11-20 10:33:04,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 10:33:04,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 10:33:04,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 10:33:04,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 10:33:04,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/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 10:33:04,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 10:33:04,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 10:33:04,418 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 10:33:04,418 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 10:33:04,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:04 BoogieIcfgContainer [2019-11-20 10:33:04,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 10:33:04,420 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 10:33:04,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 10:33:04,423 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 10:33:04,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:33:03" (1/3) ... [2019-11-20 10:33:04,424 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e28c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:33:04, skipping insertion in model container [2019-11-20 10:33:04,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:04" (2/3) ... [2019-11-20 10:33:04,425 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14e28c15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:33:04, skipping insertion in model container [2019-11-20 10:33:04,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:04" (3/3) ... [2019-11-20 10:33:04,427 INFO L109 eAbstractionObserver]: Analyzing ICFG inv_square-1.c [2019-11-20 10:33:04,435 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 10:33:04,440 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 10:33:04,449 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 10:33:04,469 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 10:33:04,469 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 10:33:04,470 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 10:33:04,470 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 10:33:04,470 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 10:33:04,470 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 10:33:04,470 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 10:33:04,470 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 10:33:04,483 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-11-20 10:33:04,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-20 10:33:04,487 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:33:04,488 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-20 10:33:04,488 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:33:04,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:33:04,493 INFO L82 PathProgramCache]: Analyzing trace with hash 957382, now seen corresponding path program 1 times [2019-11-20 10:33:04,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-20 10:33:04,500 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506113803] [2019-11-20 10:33:04,500 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-20 10:33:04,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:33:04,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:33:04,592 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-20 10:33:04,592 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 10:33:04,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:33:04 BoogieIcfgContainer [2019-11-20 10:33:04,605 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 10:33:04,605 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 10:33:04,606 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 10:33:04,606 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 10:33:04,606 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:04" (3/4) ... [2019-11-20 10:33:04,609 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-11-20 10:33:04,609 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 10:33:04,612 INFO L168 Benchmark]: Toolchain (without parser) took 727.71 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -140.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:33:04,612 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:33:04,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -172.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. [2019-11-20 10:33:04,614 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.13 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:33:04,614 INFO L168 Benchmark]: Boogie Preprocessor took 17.45 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:33:04,615 INFO L168 Benchmark]: RCFGBuilder took 196.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-20 10:33:04,616 INFO L168 Benchmark]: TraceAbstraction took 184.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-20 10:33:04,616 INFO L168 Benchmark]: Witness Printer took 4.10 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:33:04,619 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 292.25 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 120.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -172.1 MB). Peak memory consumption was 23.0 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.13 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.45 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 196.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 184.77 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Witness Printer took 4.10 ms. Allocated memory is still 1.1 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: 8]: 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 18. Possible FailurePath: [L12] float x, y, z; [L14] x = __VERIFIER_nondet_float() [L17] COND TRUE x != 0.f [L18] y = x * x [L8] COND TRUE !(cond) [L8] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 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=10occurred 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, 4 NumberOfCodeBlocks, 4 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 10:33:06,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-20 10:33:06,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-20 10:33:06,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-20 10:33:06,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-20 10:33:06,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-20 10:33:06,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-20 10:33:06,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-20 10:33:06,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-20 10:33:06,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-20 10:33:06,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-20 10:33:06,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-20 10:33:06,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-20 10:33:06,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-20 10:33:06,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-20 10:33:06,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-20 10:33:06,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-20 10:33:06,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-20 10:33:06,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-20 10:33:06,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-20 10:33:06,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-20 10:33:06,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-20 10:33:06,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-20 10:33:06,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-20 10:33:06,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-20 10:33:06,547 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-20 10:33:06,547 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-20 10:33:06,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-20 10:33:06,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-20 10:33:06,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-20 10:33:06,550 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-20 10:33:06,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-20 10:33:06,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-20 10:33:06,555 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-20 10:33:06,556 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-20 10:33:06,558 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-20 10:33:06,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-20 10:33:06,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-20 10:33:06,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-20 10:33:06,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-20 10:33:06,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-20 10:33:06,565 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2019-11-20 10:33:06,579 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-20 10:33:06,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-20 10:33:06,580 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-20 10:33:06,580 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-20 10:33:06,581 INFO L138 SettingsManager]: * Use SBE=true [2019-11-20 10:33:06,581 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-20 10:33:06,581 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-20 10:33:06,581 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-20 10:33:06,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-20 10:33:06,582 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-20 10:33:06,582 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-20 10:33:06,582 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-20 10:33:06,583 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-20 10:33:06,583 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-20 10:33:06,583 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-20 10:33:06,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-20 10:33:06,584 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-20 10:33:06,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-20 10:33:06,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-20 10:33:06,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-20 10:33:06,585 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-20 10:33:06,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-20 10:33:06,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-20 10:33:06,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-20 10:33:06,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-20 10:33:06,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-20 10:33:06,586 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-20 10:33:06,586 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-20 10:33:06,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-20 10:33:06,587 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-20 10:33:06,587 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_d3995997-f498-426d-85ad-af21fa165655/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 -> 5cdc4d12f446be57385f35c672efbdd6980b00fa [2019-11-20 10:33:06,873 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-20 10:33:06,894 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-20 10:33:06,898 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-20 10:33:06,903 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-20 10:33:06,903 INFO L275 PluginConnector]: CDTParser initialized [2019-11-20 10:33:06,904 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/bin/uautomizer/../../sv-benchmarks/c/float-benchs/inv_square-1.c [2019-11-20 10:33:06,961 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/bin/uautomizer/data/de8a5ea49/a82aa3f765aa45d69439e060832d5320/FLAGa19483f04 [2019-11-20 10:33:07,314 INFO L306 CDTParser]: Found 1 translation units. [2019-11-20 10:33:07,315 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/sv-benchmarks/c/float-benchs/inv_square-1.c [2019-11-20 10:33:07,320 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/bin/uautomizer/data/de8a5ea49/a82aa3f765aa45d69439e060832d5320/FLAGa19483f04 [2019-11-20 10:33:07,699 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/bin/uautomizer/data/de8a5ea49/a82aa3f765aa45d69439e060832d5320 [2019-11-20 10:33:07,701 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-20 10:33:07,702 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-20 10:33:07,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-20 10:33:07,703 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-20 10:33:07,706 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-20 10:33:07,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:07" (1/1) ... [2019-11-20 10:33:07,710 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a81bfb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:07, skipping insertion in model container [2019-11-20 10:33:07,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 10:33:07" (1/1) ... [2019-11-20 10:33:07,717 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-20 10:33:07,730 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-20 10:33:07,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:33:07,876 INFO L188 MainTranslator]: Completed pre-run [2019-11-20 10:33:07,889 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-20 10:33:07,902 INFO L192 MainTranslator]: Completed translation [2019-11-20 10:33:07,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:07 WrapperNode [2019-11-20 10:33:07,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-20 10:33:07,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-20 10:33:07,904 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-20 10:33:07,904 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-20 10:33:07,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:07" (1/1) ... [2019-11-20 10:33:07,918 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:07" (1/1) ... [2019-11-20 10:33:07,931 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-20 10:33:07,931 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-20 10:33:07,931 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-20 10:33:07,931 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-20 10:33:07,987 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:07" (1/1) ... [2019-11-20 10:33:07,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:07" (1/1) ... [2019-11-20 10:33:07,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:07" (1/1) ... [2019-11-20 10:33:07,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:07" (1/1) ... [2019-11-20 10:33:07,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:07" (1/1) ... [2019-11-20 10:33:07,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:07" (1/1) ... [2019-11-20 10:33:07,998 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:07" (1/1) ... [2019-11-20 10:33:08,000 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-20 10:33:08,001 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-20 10:33:08,001 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-20 10:33:08,001 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-20 10:33:08,002 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/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 10:33:08,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-20 10:33:08,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-20 10:33:08,874 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-20 10:33:08,875 INFO L285 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-20 10:33:08,875 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:08 BoogieIcfgContainer [2019-11-20 10:33:08,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-20 10:33:08,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-20 10:33:08,877 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-20 10:33:08,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-20 10:33:08,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 10:33:07" (1/3) ... [2019-11-20 10:33:08,880 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175e117b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:33:08, skipping insertion in model container [2019-11-20 10:33:08,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 10:33:07" (2/3) ... [2019-11-20 10:33:08,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@175e117b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 10:33:08, skipping insertion in model container [2019-11-20 10:33:08,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:08" (3/3) ... [2019-11-20 10:33:08,882 INFO L109 eAbstractionObserver]: Analyzing ICFG inv_square-1.c [2019-11-20 10:33:08,891 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-20 10:33:08,898 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-20 10:33:08,908 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-20 10:33:08,929 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-20 10:33:08,929 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-20 10:33:08,930 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-20 10:33:08,930 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-20 10:33:08,930 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-20 10:33:08,930 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-20 10:33:08,930 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-20 10:33:08,930 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-20 10:33:08,943 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2019-11-20 10:33:08,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-20 10:33:08,948 INFO L402 BasicCegarLoop]: Found error trace [2019-11-20 10:33:08,949 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-20 10:33:08,950 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-20 10:33:08,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-20 10:33:08,955 INFO L82 PathProgramCache]: Analyzing trace with hash 957382, now seen corresponding path program 1 times [2019-11-20 10:33:08,965 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-20 10:33:08,965 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1840920793] [2019-11-20 10:33:08,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/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 10:33:09,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:33:09,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-20 10:33:09,174 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-20 10:33:09,175 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-20 10:33:09,375 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-11-20 10:33:09,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 10:33:09 BoogieIcfgContainer [2019-11-20 10:33:09,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-20 10:33:09,391 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-20 10:33:09,391 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-20 10:33:09,391 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-20 10:33:09,392 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 10:33:08" (3/4) ... [2019-11-20 10:33:09,393 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-20 10:33:09,424 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d3995997-f498-426d-85ad-af21fa165655/bin/uautomizer/witness.graphml [2019-11-20 10:33:09,424 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-20 10:33:09,427 INFO L168 Benchmark]: Toolchain (without parser) took 1723.20 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 955.1 MB in the beginning and 1.1 GB in the end (delta: -155.8 MB). Peak memory consumption was 452.7 kB. Max. memory is 11.5 GB. [2019-11-20 10:33:09,427 INFO L168 Benchmark]: CDTParser took 0.51 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 10:33:09,428 INFO L168 Benchmark]: CACSL2BoogieTranslator took 200.46 ms. Allocated memory is still 1.0 GB. Free memory was 955.1 MB in the beginning and 944.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-20 10:33:09,429 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.11 ms. Allocated memory is still 1.0 GB. Free memory is still 944.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-20 10:33:09,430 INFO L168 Benchmark]: Boogie Preprocessor took 69.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -202.1 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. [2019-11-20 10:33:09,431 INFO L168 Benchmark]: RCFGBuilder took 874.65 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: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. [2019-11-20 10:33:09,432 INFO L168 Benchmark]: TraceAbstraction took 513.97 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-11-20 10:33:09,432 INFO L168 Benchmark]: Witness Printer took 33.57 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 10:33:09,436 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 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 200.46 ms. Allocated memory is still 1.0 GB. Free memory was 955.1 MB in the beginning and 944.3 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 27.11 ms. Allocated memory is still 1.0 GB. Free memory is still 944.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 69.49 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.2 MB). Free memory was 944.3 MB in the beginning and 1.1 GB in the end (delta: -202.1 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 874.65 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: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 513.97 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: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * Witness Printer took 33.57 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: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] float x, y, z; [L14] x = __VERIFIER_nondet_float() [L17] COND TRUE x != 0.f [L18] y = x * x [L8] COND TRUE !(cond) [L8] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 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=10occurred 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, 4 NumberOfCodeBlocks, 4 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...