./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aa418289 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a552ed0b53624bc27612451ed4207d0101db39b ............................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a552ed0b53624bc27612451ed4207d0101db39b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-aa41828 [2018-11-23 13:15:12,662 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 13:15:12,663 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 13:15:12,670 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 13:15:12,670 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 13:15:12,671 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 13:15:12,672 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 13:15:12,673 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 13:15:12,674 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 13:15:12,674 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 13:15:12,675 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 13:15:12,675 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 13:15:12,676 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 13:15:12,676 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 13:15:12,677 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 13:15:12,678 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 13:15:12,678 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 13:15:12,679 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 13:15:12,681 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 13:15:12,682 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 13:15:12,682 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 13:15:12,683 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 13:15:12,685 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 13:15:12,686 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 13:15:12,686 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 13:15:12,687 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 13:15:12,687 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 13:15:12,688 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 13:15:12,688 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 13:15:12,689 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 13:15:12,689 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 13:15:12,690 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 13:15:12,690 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 13:15:12,690 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 13:15:12,691 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 13:15:12,691 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 13:15:12,691 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-23 13:15:12,699 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 13:15:12,699 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 13:15:12,700 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 13:15:12,700 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 13:15:12,700 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 13:15:12,700 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 13:15:12,701 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 13:15:12,701 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-23 13:15:12,701 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 13:15:12,701 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 13:15:12,701 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-23 13:15:12,701 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-23 13:15:12,701 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 13:15:12,702 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 13:15:12,702 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 13:15:12,702 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-23 13:15:12,702 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 13:15:12,702 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 13:15:12,703 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 13:15:12,703 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 13:15:12,703 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 13:15:12,703 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 13:15:12,703 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 13:15:12,703 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 13:15:12,703 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 13:15:12,704 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 13:15:12,704 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 13:15:12,704 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 13:15:12,704 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 13:15:12,704 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 13:15:12,704 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 13:15:12,704 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 13:15:12,704 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 13:15:12,705 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-23 13:15:12,705 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 13:15:12,705 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-23 13:15:12,705 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-23 13:15:12,705 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan 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 -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a552ed0b53624bc27612451ed4207d0101db39b [2018-11-23 13:15:12,729 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 13:15:12,738 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 13:15:12,740 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 13:15:12,741 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 13:15:12,742 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 13:15:12,742 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-11-23 13:15:12,789 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan/data/cbe6c206e/450996ee170c423fbb1212369137d25a/FLAG7fd87a986 [2018-11-23 13:15:13,177 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 13:15:13,177 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-11-23 13:15:13,181 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan/data/cbe6c206e/450996ee170c423fbb1212369137d25a/FLAG7fd87a986 [2018-11-23 13:15:13,189 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan/data/cbe6c206e/450996ee170c423fbb1212369137d25a [2018-11-23 13:15:13,191 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 13:15:13,191 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 13:15:13,192 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 13:15:13,192 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 13:15:13,194 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 13:15:13,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:15:13" (1/1) ... [2018-11-23 13:15:13,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e234a26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:13, skipping insertion in model container [2018-11-23 13:15:13,196 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:15:13" (1/1) ... [2018-11-23 13:15:13,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 13:15:13,216 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 13:15:13,320 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:15:13,322 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 13:15:13,331 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:15:13,339 INFO L195 MainTranslator]: Completed translation [2018-11-23 13:15:13,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:13 WrapperNode [2018-11-23 13:15:13,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 13:15:13,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 13:15:13,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 13:15:13,340 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 13:15:13,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:13" (1/1) ... [2018-11-23 13:15:13,348 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:13" (1/1) ... [2018-11-23 13:15:13,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 13:15:13,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 13:15:13,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 13:15:13,352 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 13:15:13,358 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:13" (1/1) ... [2018-11-23 13:15:13,358 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:13" (1/1) ... [2018-11-23 13:15:13,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:13" (1/1) ... [2018-11-23 13:15:13,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:13" (1/1) ... [2018-11-23 13:15:13,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:13" (1/1) ... [2018-11-23 13:15:13,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:13" (1/1) ... [2018-11-23 13:15:13,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:13" (1/1) ... [2018-11-23 13:15:13,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 13:15:13,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 13:15:13,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 13:15:13,364 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 13:15:13,364 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 13:15:13,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 13:15:13,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 13:15:13,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 13:15:13,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 13:15:13,444 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 13:15:13,444 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 13:15:13,445 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 13:15:13,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 13:15:13,544 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 13:15:13,545 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 13:15:13,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:15:13 BoogieIcfgContainer [2018-11-23 13:15:13,545 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 13:15:13,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 13:15:13,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 13:15:13,548 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 13:15:13,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:15:13" (1/3) ... [2018-11-23 13:15:13,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498d4eaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:15:13, skipping insertion in model container [2018-11-23 13:15:13,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:13" (2/3) ... [2018-11-23 13:15:13,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@498d4eaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:15:13, skipping insertion in model container [2018-11-23 13:15:13,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:15:13" (3/3) ... [2018-11-23 13:15:13,551 INFO L112 eAbstractionObserver]: Analyzing ICFG float_int_inv_square_false-unreach-call_true-termination.c [2018-11-23 13:15:13,557 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 13:15:13,562 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 13:15:13,572 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 13:15:13,592 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 13:15:13,592 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 13:15:13,592 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 13:15:13,592 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 13:15:13,592 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 13:15:13,592 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 13:15:13,592 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 13:15:13,592 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 13:15:13,604 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-23 13:15:13,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-23 13:15:13,608 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:15:13,608 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:15:13,610 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:15:13,614 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:15:13,614 INFO L82 PathProgramCache]: Analyzing trace with hash 997393992, now seen corresponding path program 1 times [2018-11-23 13:15:13,616 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-23 13:15:13,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:15:13,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:15:13,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-23 13:15:13,646 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-23 13:15:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:15:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:15:13,692 INFO L469 BasicCegarLoop]: Counterexample might be feasible ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] CALL call ULTIMATE.init(); [?] assume true; [?] RET #20#return; [?] CALL call #t~ret1 := main(); [?] havoc ~x~0;havoc ~y~0;havoc ~z~0;assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647;~x~0 := #t~nondet0;havoc #t~nondet0;assume 0 != (if ~x~0 >= -10 && ~x~0 <= 10 then 1 else 0);~y~0 := ~someBinaryArithmeticFLOAToperation(~convertINTToFLOAT(~x~0 * ~x~0), 4.0); VAL [main_~x~0=0] [?] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~y~0, 0.0) then 1 else 0)); VAL [|__VERIFIER_assert_#in~cond|=0] [?] ~cond := #in~cond; VAL [__VERIFIER_assert_~cond=0, |__VERIFIER_assert_#in~cond|=0] [?] assume 0 == ~cond; VAL [__VERIFIER_assert_~cond=0, |__VERIFIER_assert_#in~cond|=0] [?] assume !false; VAL [__VERIFIER_assert_~cond=0, |__VERIFIER_assert_#in~cond|=0] [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L10] havoc ~x~0; [L11] havoc ~y~0; [L11] havoc ~z~0; [L13] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L13] ~x~0 := #t~nondet0; [L13] havoc #t~nondet0; [L14] assume 0 != (if ~x~0 >= -10 && ~x~0 <= 10 then 1 else 0); [L16] ~y~0 := ~someBinaryArithmeticFLOAToperation(~convertINTToFLOAT(~x~0 * ~x~0), 4.0); VAL [~x~0=0] [L17] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~y~0, 0.0) then 1 else 0)); VAL [#in~cond=0] [L6] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L6] assume 0 == ~cond; VAL [#in~cond=0, ~cond=0] [L6] assert false; VAL [#in~cond=0, ~cond=0] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L10] havoc ~x~0; [L11] havoc ~y~0; [L11] havoc ~z~0; [L13] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L13] ~x~0 := #t~nondet0; [L13] havoc #t~nondet0; [L14] assume 0 != (if ~x~0 >= -10 && ~x~0 <= 10 then 1 else 0); [L16] ~y~0 := ~someBinaryArithmeticFLOAToperation(~convertINTToFLOAT(~x~0 * ~x~0), 4.0); VAL [~x~0=0] [L17] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~y~0, 0.0) then 1 else 0)); VAL [#in~cond=0] [L6] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L6] assume 0 == ~cond; VAL [#in~cond=0, ~cond=0] [L6] assert false; VAL [#in~cond=0, ~cond=0] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L10] havoc ~x~0; [L11] havoc ~y~0; [L11] havoc ~z~0; [L13] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L13] ~x~0 := #t~nondet0; [L13] havoc #t~nondet0; [L14] assume 0 != (if ~x~0 >= -10 && ~x~0 <= 10 then 1 else 0); [L16] ~y~0 := ~someBinaryArithmeticFLOAToperation(~convertINTToFLOAT(~x~0 * ~x~0), 4.0); VAL [~x~0=0] [L17] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~y~0, 0.0) then 1 else 0)); VAL [#in~cond=0] [L6] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L6] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L6] assert false; VAL [#in~cond=0, ~cond=0] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L10] havoc ~x~0; [L11] havoc ~y~0; [L11] havoc ~z~0; [L13] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L13] ~x~0 := #t~nondet0; [L13] havoc #t~nondet0; [L14] assume 0 != (if ~x~0 >= -10 && ~x~0 <= 10 then 1 else 0); [L16] ~y~0 := ~someBinaryArithmeticFLOAToperation(~convertINTToFLOAT(~x~0 * ~x~0), 4.0); VAL [~x~0=0] [L17] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~y~0, 0.0) then 1 else 0)); VAL [#in~cond=0] [L6] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L6] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L6] assert false; VAL [#in~cond=0, ~cond=0] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L10] havoc ~x~0; [L11] havoc ~y~0; [L11] havoc ~z~0; [L13] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L13] ~x~0 := #t~nondet0; [L13] havoc #t~nondet0; [L14] assume 0 != (if ~x~0 >= -10 && ~x~0 <= 10 then 1 else 0); [L16] ~y~0 := ~someBinaryArithmeticFLOAToperation(~convertINTToFLOAT(~x~0 * ~x~0), 4.0); VAL [~x~0=0] [L17] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~y~0, 0.0) then 1 else 0)); VAL [#in~cond=0] [L6] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L6] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L6] assert false; VAL [#in~cond=0, ~cond=0] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L10] havoc ~x~0; [L11] havoc ~y~0; [L11] havoc ~z~0; [L13] assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; [L13] ~x~0 := #t~nondet0; [L13] havoc #t~nondet0; [L14] assume 0 != (if ~x~0 >= -10 && ~x~0 <= 10 then 1 else 0); [L16] ~y~0 := ~someBinaryArithmeticFLOAToperation(~convertINTToFLOAT(~x~0 * ~x~0), 4.0); VAL [~x~0=0] [L17] CALL call __VERIFIER_assert((if ~someBinaryFLOATComparisonOperation(~y~0, 0.0) then 1 else 0)); VAL [#in~cond=0] [L6] ~cond := #in~cond; VAL [#in~cond=0, ~cond=0] [L6] COND TRUE 0 == ~cond VAL [#in~cond=0, ~cond=0] [L6] assert false; VAL [#in~cond=0, ~cond=0] [L10] int x; [L11] float y, z; [L13] x = __VERIFIER_nondet_int() [L16] y = x*x - 4.f VAL [x=0] [L17] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] ----- [2018-11-23 13:15:13,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:15:13 BoogieIcfgContainer [2018-11-23 13:15:13,714 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 13:15:13,714 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 13:15:13,715 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 13:15:13,715 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 13:15:13,715 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:15:13" (3/4) ... [2018-11-23 13:15:13,718 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-23 13:15:13,719 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 13:15:13,719 INFO L168 Benchmark]: Toolchain (without parser) took 528.32 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -150.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:15:13,721 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:15:13,721 INFO L168 Benchmark]: CACSL2BoogieTranslator took 147.39 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 13:15:13,722 INFO L168 Benchmark]: Boogie Procedure Inliner took 12.49 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:15:13,723 INFO L168 Benchmark]: Boogie Preprocessor took 11.33 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-23 13:15:13,723 INFO L168 Benchmark]: RCFGBuilder took 181.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -177.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. [2018-11-23 13:15:13,724 INFO L168 Benchmark]: TraceAbstraction took 168.31 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. [2018-11-23 13:15:13,724 INFO L168 Benchmark]: Witness Printer took 4.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:15:13,727 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 147.39 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 948.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 12.49 ms. Allocated memory is still 1.0 GB. Free memory is still 948.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 11.33 ms. Allocated memory is still 1.0 GB. Free memory was 948.5 MB in the beginning and 945.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 181.66 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.0 MB). Free memory was 945.8 MB in the beginning and 1.1 GB in the end (delta: -177.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 168.31 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 11.5 GB. * Witness Printer took 4.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 6]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 16. Possible FailurePath: [L10] int x; [L11] float y, z; [L13] x = __VERIFIER_nondet_int() [L16] y = x*x - 4.f VAL [x=0] [L17] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-aa41828 [2018-11-23 13:15:15,133 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-23 13:15:15,134 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-23 13:15:15,141 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-23 13:15:15,141 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-23 13:15:15,142 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-23 13:15:15,143 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-23 13:15:15,144 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-23 13:15:15,145 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-23 13:15:15,145 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-23 13:15:15,147 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-23 13:15:15,147 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-23 13:15:15,147 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-23 13:15:15,148 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-23 13:15:15,149 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-23 13:15:15,149 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-23 13:15:15,151 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-23 13:15:15,152 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-23 13:15:15,153 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-23 13:15:15,154 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-23 13:15:15,155 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-23 13:15:15,156 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-23 13:15:15,158 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-23 13:15:15,158 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-23 13:15:15,158 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-23 13:15:15,159 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-23 13:15:15,160 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-23 13:15:15,160 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-23 13:15:15,161 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-23 13:15:15,161 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-23 13:15:15,162 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-23 13:15:15,163 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-23 13:15:15,163 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-23 13:15:15,163 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-23 13:15:15,164 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-23 13:15:15,164 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-23 13:15:15,164 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-23 13:15:15,175 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-23 13:15:15,175 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-23 13:15:15,176 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-23 13:15:15,176 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-23 13:15:15,176 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-23 13:15:15,176 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-23 13:15:15,177 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-23 13:15:15,177 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-23 13:15:15,177 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-23 13:15:15,177 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-23 13:15:15,177 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-23 13:15:15,177 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-23 13:15:15,178 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-23 13:15:15,178 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-23 13:15:15,178 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-23 13:15:15,178 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-23 13:15:15,178 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-23 13:15:15,178 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-23 13:15:15,178 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-23 13:15:15,178 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-23 13:15:15,179 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-23 13:15:15,179 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-23 13:15:15,179 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-23 13:15:15,179 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-23 13:15:15,179 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-23 13:15:15,179 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-23 13:15:15,179 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-23 13:15:15,179 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 13:15:15,179 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-23 13:15:15,179 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-23 13:15:15,180 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-23 13:15:15,180 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-23 13:15:15,180 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-23 13:15:15,180 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-23 13:15:15,180 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-23 13:15:15,180 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan 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 -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a552ed0b53624bc27612451ed4207d0101db39b [2018-11-23 13:15:15,213 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-23 13:15:15,222 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-23 13:15:15,225 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-23 13:15:15,226 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-23 13:15:15,226 INFO L276 PluginConnector]: CDTParser initialized [2018-11-23 13:15:15,226 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan/../../sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-11-23 13:15:15,271 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan/data/40a74103b/d7d3e78bc877481699611bedb3a046b6/FLAGfff29da08 [2018-11-23 13:15:15,586 INFO L307 CDTParser]: Found 1 translation units. [2018-11-23 13:15:15,586 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/sv-benchmarks/c/float-benchs/float_int_inv_square_false-unreach-call_true-termination.c [2018-11-23 13:15:15,590 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan/data/40a74103b/d7d3e78bc877481699611bedb3a046b6/FLAGfff29da08 [2018-11-23 13:15:16,026 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan/data/40a74103b/d7d3e78bc877481699611bedb3a046b6 [2018-11-23 13:15:16,027 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-23 13:15:16,028 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-23 13:15:16,029 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-23 13:15:16,029 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-23 13:15:16,031 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-23 13:15:16,032 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:15:16" (1/1) ... [2018-11-23 13:15:16,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31f19670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:16, skipping insertion in model container [2018-11-23 13:15:16,033 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:15:16" (1/1) ... [2018-11-23 13:15:16,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-23 13:15:16,050 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-23 13:15:16,166 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:15:16,171 INFO L191 MainTranslator]: Completed pre-run [2018-11-23 13:15:16,183 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-23 13:15:16,194 INFO L195 MainTranslator]: Completed translation [2018-11-23 13:15:16,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:16 WrapperNode [2018-11-23 13:15:16,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-23 13:15:16,196 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-23 13:15:16,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-23 13:15:16,196 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-23 13:15:16,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:16" (1/1) ... [2018-11-23 13:15:16,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:16" (1/1) ... [2018-11-23 13:15:16,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-23 13:15:16,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-23 13:15:16,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-23 13:15:16,214 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-23 13:15:16,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:16" (1/1) ... [2018-11-23 13:15:16,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:16" (1/1) ... [2018-11-23 13:15:16,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:16" (1/1) ... [2018-11-23 13:15:16,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:16" (1/1) ... [2018-11-23 13:15:16,226 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:16" (1/1) ... [2018-11-23 13:15:16,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:16" (1/1) ... [2018-11-23 13:15:16,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:16" (1/1) ... [2018-11-23 13:15:16,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-23 13:15:16,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-23 13:15:16,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-23 13:15:16,230 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-23 13:15:16,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-23 13:15:16,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-23 13:15:16,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-23 13:15:16,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-23 13:15:16,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-23 13:15:16,306 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-23 13:15:16,306 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-23 13:15:16,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-23 13:15:16,306 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-23 13:15:16,831 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-23 13:15:16,832 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-23 13:15:16,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:15:16 BoogieIcfgContainer [2018-11-23 13:15:16,832 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-23 13:15:16,833 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-23 13:15:16,833 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-23 13:15:16,834 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-23 13:15:16,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:15:16" (1/3) ... [2018-11-23 13:15:16,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13234901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:15:16, skipping insertion in model container [2018-11-23 13:15:16,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:15:16" (2/3) ... [2018-11-23 13:15:16,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13234901 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:15:16, skipping insertion in model container [2018-11-23 13:15:16,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:15:16" (3/3) ... [2018-11-23 13:15:16,837 INFO L112 eAbstractionObserver]: Analyzing ICFG float_int_inv_square_false-unreach-call_true-termination.c [2018-11-23 13:15:16,845 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-23 13:15:16,849 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-23 13:15:16,862 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-23 13:15:16,883 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-23 13:15:16,883 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-23 13:15:16,884 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-23 13:15:16,884 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-23 13:15:16,884 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-23 13:15:16,884 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-23 13:15:16,884 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-23 13:15:16,884 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-23 13:15:16,884 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-23 13:15:16,895 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-23 13:15:16,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-23 13:15:16,900 INFO L394 BasicCegarLoop]: Found error trace [2018-11-23 13:15:16,901 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-23 13:15:16,902 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-23 13:15:16,906 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-23 13:15:16,907 INFO L82 PathProgramCache]: Analyzing trace with hash 997393992, now seen corresponding path program 1 times [2018-11-23 13:15:16,910 INFO L223 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-11-23 13:15:16,910 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-11-23 13:15:16,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-23 13:15:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:15:17,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-23 13:15:17,049 INFO L469 BasicCegarLoop]: Counterexample might be feasible ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] CALL call ULTIMATE.init(); [?] assume true; [?] RET #20#return; [?] CALL call #t~ret1 := main(); [?] havoc ~x~0;havoc ~y~0;havoc ~z~0;~x~0 := #t~nondet0;havoc #t~nondet0;assume 0bv32 != (if ~bvsge32(~x~0, 4294967286bv32) && ~bvsle32(~x~0, 10bv32) then 1bv32 else 0bv32);~y~0 := ~fp.sub~FLOAT(~roundNearestTiesToEven, ~convertINTToFLOAT(~roundNearestTiesToEven, ~bvmul32(~x~0, ~x~0)), ~to_fp~FLOAT(~roundNearestTiesToEven, 4.0)); VAL [main_~x~0=(_ bv2 32), main_~y~0=(fp #b0 #b00000000 #b00000000000000000000000)] [?] CALL call __VERIFIER_assert((if !~fp.eq~FLOAT(~y~0, ~Pluszero~FLOAT()) then 1bv32 else 0bv32)); VAL [|__VERIFIER_assert_#in~cond|=(_ bv0 32)] [?] ~cond := #in~cond; VAL [__VERIFIER_assert_~cond=(_ bv0 32), |__VERIFIER_assert_#in~cond|=(_ bv0 32)] [?] assume 0bv32 == ~cond; VAL [__VERIFIER_assert_~cond=(_ bv0 32), |__VERIFIER_assert_#in~cond|=(_ bv0 32)] [?] assume !false; VAL [__VERIFIER_assert_~cond=(_ bv0 32), |__VERIFIER_assert_#in~cond|=(_ bv0 32)] [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L10] havoc ~x~0; [L11] havoc ~y~0; [L11] havoc ~z~0; [L13] ~x~0 := #t~nondet0; [L13] havoc #t~nondet0; [L14] assume 0bv32 != (if ~bvsge32(~x~0, 4294967286bv32) && ~bvsle32(~x~0, 10bv32) then 1bv32 else 0bv32); [L16] ~y~0 := ~fp.sub~FLOAT(~roundNearestTiesToEven, ~convertINTToFLOAT(~roundNearestTiesToEven, ~bvmul32(~x~0, ~x~0)), ~to_fp~FLOAT(~roundNearestTiesToEven, 4.0)); VAL [~x~0=2bv32, ~y~0=~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23)] [L17] CALL call __VERIFIER_assert((if !~fp.eq~FLOAT(~y~0, ~Pluszero~FLOAT()) then 1bv32 else 0bv32)); VAL [#in~cond=0bv32] [L6] ~cond := #in~cond; VAL [#in~cond=0bv32, ~cond=0bv32] [L6] assume 0bv32 == ~cond; VAL [#in~cond=0bv32, ~cond=0bv32] [L6] assert false; VAL [#in~cond=0bv32, ~cond=0bv32] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L10] havoc ~x~0; [L11] havoc ~y~0; [L11] havoc ~z~0; [L13] ~x~0 := #t~nondet0; [L13] havoc #t~nondet0; [L14] assume 0bv32 != (if ~bvsge32(~x~0, 4294967286bv32) && ~bvsle32(~x~0, 10bv32) then 1bv32 else 0bv32); [L16] ~y~0 := ~fp.sub~FLOAT(~roundNearestTiesToEven, ~convertINTToFLOAT(~roundNearestTiesToEven, ~bvmul32(~x~0, ~x~0)), ~to_fp~FLOAT(~roundNearestTiesToEven, 4.0)); VAL [~x~0=2bv32, ~y~0=~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23)] [L17] CALL call __VERIFIER_assert((if !~fp.eq~FLOAT(~y~0, ~Pluszero~FLOAT()) then 1bv32 else 0bv32)); VAL [#in~cond=0bv32] [L6] ~cond := #in~cond; VAL [#in~cond=0bv32, ~cond=0bv32] [L6] assume 0bv32 == ~cond; VAL [#in~cond=0bv32, ~cond=0bv32] [L6] assert false; VAL [#in~cond=0bv32, ~cond=0bv32] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L10] havoc ~x~0; [L11] havoc ~y~0; [L11] havoc ~z~0; [L13] ~x~0 := #t~nondet0; [L13] havoc #t~nondet0; [L14] assume 0bv32 != (if ~bvsge32(~x~0, 4294967286bv32) && ~bvsle32(~x~0, 10bv32) then 1bv32 else 0bv32); [L16] ~y~0 := ~fp.sub~FLOAT(~roundNearestTiesToEven, ~convertINTToFLOAT(~roundNearestTiesToEven, ~bvmul32(~x~0, ~x~0)), ~to_fp~FLOAT(~roundNearestTiesToEven, 4.0)); VAL [~x~0=2bv32, ~y~0=~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23)] [L17] CALL call __VERIFIER_assert((if !~fp.eq~FLOAT(~y~0, ~Pluszero~FLOAT()) then 1bv32 else 0bv32)); VAL [#in~cond=0bv32] [L6] ~cond := #in~cond; VAL [#in~cond=0bv32, ~cond=0bv32] [L6] COND TRUE 0bv32 == ~cond VAL [#in~cond=0bv32, ~cond=0bv32] [L6] assert false; VAL [#in~cond=0bv32, ~cond=0bv32] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L10] havoc ~x~0; [L11] havoc ~y~0; [L11] havoc ~z~0; [L13] ~x~0 := #t~nondet0; [L13] havoc #t~nondet0; [L14] assume 0bv32 != (if ~bvsge32(~x~0, 4294967286bv32) && ~bvsle32(~x~0, 10bv32) then 1bv32 else 0bv32); [L16] ~y~0 := ~fp.sub~FLOAT(~roundNearestTiesToEven, ~convertINTToFLOAT(~roundNearestTiesToEven, ~bvmul32(~x~0, ~x~0)), ~to_fp~FLOAT(~roundNearestTiesToEven, 4.0)); VAL [~x~0=2bv32, ~y~0=~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23)] [L17] CALL call __VERIFIER_assert((if !~fp.eq~FLOAT(~y~0, ~Pluszero~FLOAT()) then 1bv32 else 0bv32)); VAL [#in~cond=0bv32] [L6] ~cond := #in~cond; VAL [#in~cond=0bv32, ~cond=0bv32] [L6] COND TRUE 0bv32 == ~cond VAL [#in~cond=0bv32, ~cond=0bv32] [L6] assert false; VAL [#in~cond=0bv32, ~cond=0bv32] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L10] havoc ~x~0; [L11] havoc ~y~0; [L11] havoc ~z~0; [L13] ~x~0 := #t~nondet0; [L13] havoc #t~nondet0; [L14] assume 0bv32 != (if ~bvsge32(~x~0, 4294967286bv32) && ~bvsle32(~x~0, 10bv32) then 1bv32 else 0bv32); [L16] ~y~0 := ~fp.sub~FLOAT(~roundNearestTiesToEven, ~convertINTToFLOAT(~roundNearestTiesToEven, ~bvmul32(~x~0, ~x~0)), ~to_fp~FLOAT(~roundNearestTiesToEven, 4.0)); VAL [~x~0=2bv32, ~y~0=~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23)] [L17] CALL call __VERIFIER_assert((if !~fp.eq~FLOAT(~y~0, ~Pluszero~FLOAT()) then 1bv32 else 0bv32)); VAL [#in~cond=0bv32] [L6] ~cond := #in~cond; VAL [#in~cond=0bv32, ~cond=0bv32] [L6] COND TRUE 0bv32 == ~cond VAL [#in~cond=0bv32, ~cond=0bv32] [L6] assert false; VAL [#in~cond=0bv32, ~cond=0bv32] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L10] havoc ~x~0; [L11] havoc ~y~0; [L11] havoc ~z~0; [L13] ~x~0 := #t~nondet0; [L13] havoc #t~nondet0; [L14] assume 0bv32 != (if ~bvsge32(~x~0, 4294967286bv32) && ~bvsle32(~x~0, 10bv32) then 1bv32 else 0bv32); [L16] ~y~0 := ~fp.sub~FLOAT(~roundNearestTiesToEven, ~convertINTToFLOAT(~roundNearestTiesToEven, ~bvmul32(~x~0, ~x~0)), ~to_fp~FLOAT(~roundNearestTiesToEven, 4.0)); VAL [~x~0=2bv32, ~y~0=~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23)] [L17] CALL call __VERIFIER_assert((if !~fp.eq~FLOAT(~y~0, ~Pluszero~FLOAT()) then 1bv32 else 0bv32)); VAL [#in~cond=0bv32] [L6] ~cond := #in~cond; VAL [#in~cond=0bv32, ~cond=0bv32] [L6] COND TRUE 0bv32 == ~cond VAL [#in~cond=0bv32, ~cond=0bv32] [L6] assert false; VAL [#in~cond=0bv32, ~cond=0bv32] [L10] int x; [L11] float y, z; [L13] x = __VERIFIER_nondet_int() [L16] y = x*x - 4.f VAL [x=2, y=0.0] [L17] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] ----- [2018-11-23 13:15:17,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 01:15:17 BoogieIcfgContainer [2018-11-23 13:15:17,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-23 13:15:17,067 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-23 13:15:17,068 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-23 13:15:17,068 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-23 13:15:17,068 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:15:16" (3/4) ... [2018-11-23 13:15:17,069 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator [?] CALL call ULTIMATE.init(); [?] assume true; [?] RET #20#return; [?] CALL call #t~ret1 := main(); [?] havoc ~x~0;havoc ~y~0;havoc ~z~0;~x~0 := #t~nondet0;havoc #t~nondet0;assume 0bv32 != (if ~bvsge32(~x~0, 4294967286bv32) && ~bvsle32(~x~0, 10bv32) then 1bv32 else 0bv32);~y~0 := ~fp.sub~FLOAT(~roundNearestTiesToEven, ~convertINTToFLOAT(~roundNearestTiesToEven, ~bvmul32(~x~0, ~x~0)), ~to_fp~FLOAT(~roundNearestTiesToEven, 4.0)); VAL [main_~x~0=(_ bv2 32), main_~y~0=(fp #b0 #b00000000 #b00000000000000000000000)] [?] CALL call __VERIFIER_assert((if !~fp.eq~FLOAT(~y~0, ~Pluszero~FLOAT()) then 1bv32 else 0bv32)); VAL [|__VERIFIER_assert_#in~cond|=(_ bv0 32)] [?] ~cond := #in~cond; VAL [__VERIFIER_assert_~cond=(_ bv0 32), |__VERIFIER_assert_#in~cond|=(_ bv0 32)] [?] assume 0bv32 == ~cond; VAL [__VERIFIER_assert_~cond=(_ bv0 32), |__VERIFIER_assert_#in~cond|=(_ bv0 32)] [?] assume !false; VAL [__VERIFIER_assert_~cond=(_ bv0 32), |__VERIFIER_assert_#in~cond|=(_ bv0 32)] [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L10] havoc ~x~0; [L11] havoc ~y~0; [L11] havoc ~z~0; [L13] ~x~0 := #t~nondet0; [L13] havoc #t~nondet0; [L14] assume 0bv32 != (if ~bvsge32(~x~0, 4294967286bv32) && ~bvsle32(~x~0, 10bv32) then 1bv32 else 0bv32); [L16] ~y~0 := ~fp.sub~FLOAT(~roundNearestTiesToEven, ~convertINTToFLOAT(~roundNearestTiesToEven, ~bvmul32(~x~0, ~x~0)), ~to_fp~FLOAT(~roundNearestTiesToEven, 4.0)); VAL [~x~0=2bv32, ~y~0=~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23)] [L17] CALL call __VERIFIER_assert((if !~fp.eq~FLOAT(~y~0, ~Pluszero~FLOAT()) then 1bv32 else 0bv32)); VAL [#in~cond=0bv32] [L6] ~cond := #in~cond; VAL [#in~cond=0bv32, ~cond=0bv32] [L6] assume 0bv32 == ~cond; VAL [#in~cond=0bv32, ~cond=0bv32] [L6] assert false; VAL [#in~cond=0bv32, ~cond=0bv32] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.preprocessor.BoogiePreprocessorBacktranslator [?] CALL call ULTIMATE.init(); [?] ensures true; [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L10] havoc ~x~0; [L11] havoc ~y~0; [L11] havoc ~z~0; [L13] ~x~0 := #t~nondet0; [L13] havoc #t~nondet0; [L14] assume 0bv32 != (if ~bvsge32(~x~0, 4294967286bv32) && ~bvsle32(~x~0, 10bv32) then 1bv32 else 0bv32); [L16] ~y~0 := ~fp.sub~FLOAT(~roundNearestTiesToEven, ~convertINTToFLOAT(~roundNearestTiesToEven, ~bvmul32(~x~0, ~x~0)), ~to_fp~FLOAT(~roundNearestTiesToEven, 4.0)); VAL [~x~0=2bv32, ~y~0=~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23)] [L17] CALL call __VERIFIER_assert((if !~fp.eq~FLOAT(~y~0, ~Pluszero~FLOAT()) then 1bv32 else 0bv32)); VAL [#in~cond=0bv32] [L6] ~cond := #in~cond; VAL [#in~cond=0bv32, ~cond=0bv32] [L6] assume 0bv32 == ~cond; VAL [#in~cond=0bv32, ~cond=0bv32] [L6] assert false; VAL [#in~cond=0bv32, ~cond=0bv32] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L10] havoc ~x~0; [L11] havoc ~y~0; [L11] havoc ~z~0; [L13] ~x~0 := #t~nondet0; [L13] havoc #t~nondet0; [L14] assume 0bv32 != (if ~bvsge32(~x~0, 4294967286bv32) && ~bvsle32(~x~0, 10bv32) then 1bv32 else 0bv32); [L16] ~y~0 := ~fp.sub~FLOAT(~roundNearestTiesToEven, ~convertINTToFLOAT(~roundNearestTiesToEven, ~bvmul32(~x~0, ~x~0)), ~to_fp~FLOAT(~roundNearestTiesToEven, 4.0)); VAL [~x~0=2bv32, ~y~0=~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23)] [L17] CALL call __VERIFIER_assert((if !~fp.eq~FLOAT(~y~0, ~Pluszero~FLOAT()) then 1bv32 else 0bv32)); VAL [#in~cond=0bv32] [L6] ~cond := #in~cond; VAL [#in~cond=0bv32, ~cond=0bv32] [L6] COND TRUE 0bv32 == ~cond VAL [#in~cond=0bv32, ~cond=0bv32] [L6] assert false; VAL [#in~cond=0bv32, ~cond=0bv32] ----- ----- class de.uni_freiburg.informatik.ultimate.boogie.procedureinliner.backtranslation.InlinerBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L10] havoc ~x~0; [L11] havoc ~y~0; [L11] havoc ~z~0; [L13] ~x~0 := #t~nondet0; [L13] havoc #t~nondet0; [L14] assume 0bv32 != (if ~bvsge32(~x~0, 4294967286bv32) && ~bvsle32(~x~0, 10bv32) then 1bv32 else 0bv32); [L16] ~y~0 := ~fp.sub~FLOAT(~roundNearestTiesToEven, ~convertINTToFLOAT(~roundNearestTiesToEven, ~bvmul32(~x~0, ~x~0)), ~to_fp~FLOAT(~roundNearestTiesToEven, 4.0)); VAL [~x~0=2bv32, ~y~0=~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23)] [L17] CALL call __VERIFIER_assert((if !~fp.eq~FLOAT(~y~0, ~Pluszero~FLOAT()) then 1bv32 else 0bv32)); VAL [#in~cond=0bv32] [L6] ~cond := #in~cond; VAL [#in~cond=0bv32, ~cond=0bv32] [L6] COND TRUE 0bv32 == ~cond VAL [#in~cond=0bv32, ~cond=0bv32] [L6] assert false; VAL [#in~cond=0bv32, ~cond=0bv32] [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L10] havoc ~x~0; [L11] havoc ~y~0; [L11] havoc ~z~0; [L13] ~x~0 := #t~nondet0; [L13] havoc #t~nondet0; [L14] assume 0bv32 != (if ~bvsge32(~x~0, 4294967286bv32) && ~bvsle32(~x~0, 10bv32) then 1bv32 else 0bv32); [L16] ~y~0 := ~fp.sub~FLOAT(~roundNearestTiesToEven, ~convertINTToFLOAT(~roundNearestTiesToEven, ~bvmul32(~x~0, ~x~0)), ~to_fp~FLOAT(~roundNearestTiesToEven, 4.0)); VAL [~x~0=2bv32, ~y~0=~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23)] [L17] CALL call __VERIFIER_assert((if !~fp.eq~FLOAT(~y~0, ~Pluszero~FLOAT()) then 1bv32 else 0bv32)); VAL [#in~cond=0bv32] [L6] ~cond := #in~cond; VAL [#in~cond=0bv32, ~cond=0bv32] [L6] COND TRUE 0bv32 == ~cond VAL [#in~cond=0bv32, ~cond=0bv32] [L6] assert false; VAL [#in~cond=0bv32, ~cond=0bv32] ----- ----- class de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieBacktranslator [?] CALL call ULTIMATE.init(); [?] RET call ULTIMATE.init(); [?] CALL call #t~ret1 := main(); [L10] havoc ~x~0; [L11] havoc ~y~0; [L11] havoc ~z~0; [L13] ~x~0 := #t~nondet0; [L13] havoc #t~nondet0; [L14] assume 0bv32 != (if ~bvsge32(~x~0, 4294967286bv32) && ~bvsle32(~x~0, 10bv32) then 1bv32 else 0bv32); [L16] ~y~0 := ~fp.sub~FLOAT(~roundNearestTiesToEven, ~convertINTToFLOAT(~roundNearestTiesToEven, ~bvmul32(~x~0, ~x~0)), ~to_fp~FLOAT(~roundNearestTiesToEven, 4.0)); VAL [~x~0=2bv32, ~y~0=~fp~LONGDOUBLE(0bv1, 0bv8, 0bv23)] [L17] CALL call __VERIFIER_assert((if !~fp.eq~FLOAT(~y~0, ~Pluszero~FLOAT()) then 1bv32 else 0bv32)); VAL [#in~cond=0bv32] [L6] ~cond := #in~cond; VAL [#in~cond=0bv32, ~cond=0bv32] [L6] COND TRUE 0bv32 == ~cond VAL [#in~cond=0bv32, ~cond=0bv32] [L6] assert false; VAL [#in~cond=0bv32, ~cond=0bv32] [L10] int x; [L11] float y, z; [L13] x = __VERIFIER_nondet_int() [L16] y = x*x - 4.f VAL [x=2, y=0.0] [L17] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] ----- [2018-11-23 13:15:17,108 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3acfbae4-a358-4ce3-ae9f-a2bf7d1caa83/bin-2019/utaipan/witness.graphml [2018-11-23 13:15:17,108 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-23 13:15:17,108 INFO L168 Benchmark]: Toolchain (without parser) took 1080.57 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 947.9 MB in the beginning and 1.1 GB in the end (delta: -120.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:15:17,110 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:15:17,110 INFO L168 Benchmark]: CACSL2BoogieTranslator took 166.41 ms. Allocated memory is still 1.0 GB. Free memory was 947.9 MB in the beginning and 937.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-23 13:15:17,111 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.06 ms. Allocated memory is still 1.0 GB. Free memory was 937.1 MB in the beginning and 931.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-23 13:15:17,112 INFO L168 Benchmark]: Boogie Preprocessor took 15.54 ms. Allocated memory is still 1.0 GB. Free memory is still 931.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-23 13:15:17,112 INFO L168 Benchmark]: RCFGBuilder took 602.32 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 931.8 MB in the beginning and 1.1 GB in the end (delta: -156.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. [2018-11-23 13:15:17,113 INFO L168 Benchmark]: TraceAbstraction took 234.60 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. [2018-11-23 13:15:17,115 INFO L168 Benchmark]: Witness Printer took 40.36 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. [2018-11-23 13:15:17,118 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 166.41 ms. Allocated memory is still 1.0 GB. Free memory was 947.9 MB in the beginning and 937.1 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 18.06 ms. Allocated memory is still 1.0 GB. Free memory was 937.1 MB in the beginning and 931.8 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 15.54 ms. Allocated memory is still 1.0 GB. Free memory is still 931.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 602.32 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 104.3 MB). Free memory was 931.8 MB in the beginning and 1.1 GB in the end (delta: -156.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 234.60 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: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 11.5 GB. * Witness Printer took 40.36 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: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int x; [L11] float y, z; [L13] x = __VERIFIER_nondet_int() [L16] y = x*x - 4.f VAL [x=2, y=0.0] [L17] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. UNSAFE Result, 0.1s OverallTime, 1 OverallIterations, 1 TraceHistogramMax, 0.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...