/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/float-benchs/inv_square_false-unreach-call_true-termination.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 40ef5092 Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-benchs/inv_square_false-unreach-call_true-termination.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/float-benchs/inv_square_false-unreach-call_true-termination.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0.1.23-40ef509 [2018-09-20 13:49:03,005 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 13:49:03,007 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 13:49:03,022 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 13:49:03,022 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 13:49:03,024 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 13:49:03,025 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 13:49:03,029 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 13:49:03,031 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 13:49:03,035 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 13:49:03,036 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 13:49:03,038 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 13:49:03,039 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 13:49:03,041 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 13:49:03,050 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 13:49:03,052 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 13:49:03,053 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 13:49:03,060 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 13:49:03,062 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 13:49:03,065 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 13:49:03,069 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 13:49:03,071 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 13:49:03,076 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 13:49:03,078 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 13:49:03,079 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 13:49:03,080 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 13:49:03,085 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 13:49:03,086 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 13:49:03,087 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 13:49:03,088 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 13:49:03,091 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 13:49:03,092 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 13:49:03,092 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 13:49:03,092 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 13:49:03,093 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 13:49:03,097 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 13:49:03,097 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2018-09-20 13:49:03,125 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 13:49:03,126 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 13:49:03,128 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 13:49:03,129 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 13:49:03,130 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 13:49:03,131 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 13:49:03,131 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 13:49:03,132 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 13:49:03,132 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 13:49:03,132 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-20 13:49:03,132 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 13:49:03,132 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 13:49:03,132 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 13:49:03,133 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 13:49:03,133 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 13:49:03,133 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 13:49:03,133 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 13:49:03,136 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 13:49:03,136 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 13:49:03,137 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 13:49:03,137 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 13:49:03,137 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 13:49:03,137 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 13:49:03,138 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 13:49:03,138 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 13:49:03,138 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 13:49:03,138 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-09-20 13:49:03,138 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 13:49:03,140 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-20 13:49:03,140 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 [2018-09-20 13:49:03,214 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 13:49:03,232 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 13:49:03,237 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 13:49:03,239 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 13:49:03,239 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 13:49:03,240 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/inv_square_false-unreach-call_true-termination.c [2018-09-20 13:49:03,621 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a376f508e/7a69071cd3e24621a4a10cf755343251/FLAG2e39a39d5 [2018-09-20 13:49:03,771 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 13:49:03,772 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/inv_square_false-unreach-call_true-termination.c [2018-09-20 13:49:03,778 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a376f508e/7a69071cd3e24621a4a10cf755343251/FLAG2e39a39d5 [2018-09-20 13:49:03,797 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a376f508e/7a69071cd3e24621a4a10cf755343251 [2018-09-20 13:49:03,802 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 13:49:03,808 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 13:49:03,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 13:49:03,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 13:49:03,818 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 13:49:03,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:49:03" (1/1) ... [2018-09-20 13:49:03,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bfd7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:49:03, skipping insertion in model container [2018-09-20 13:49:03,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:49:03" (1/1) ... [2018-09-20 13:49:03,835 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 13:49:04,039 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:49:04,060 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 13:49:04,065 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:49:04,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:49:04 WrapperNode [2018-09-20 13:49:04,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 13:49:04,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 13:49:04,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 13:49:04,081 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 13:49:04,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:49:04" (1/1) ... [2018-09-20 13:49:04,098 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:49:04" (1/1) ... [2018-09-20 13:49:04,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:49:04" (1/1) ... [2018-09-20 13:49:04,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:49:04" (1/1) ... [2018-09-20 13:49:04,108 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:49:04" (1/1) ... [2018-09-20 13:49:04,111 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:49:04" (1/1) ... [2018-09-20 13:49:04,112 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:49:04" (1/1) ... [2018-09-20 13:49:04,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 13:49:04,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 13:49:04,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 13:49:04,115 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 13:49:04,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:49:04" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-09-20 13:49:04,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 13:49:04,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 13:49:04,184 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-20 13:49:04,184 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 13:49:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 13:49:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-20 13:49:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-09-20 13:49:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-20 13:49:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 13:49:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 13:49:04,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 13:49:04,424 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 13:49:04,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:49:04 BoogieIcfgContainer [2018-09-20 13:49:04,427 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 13:49:04,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 13:49:04,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 13:49:04,433 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 13:49:04,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:49:03" (1/3) ... [2018-09-20 13:49:04,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d030b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:49:04, skipping insertion in model container [2018-09-20 13:49:04,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:49:04" (2/3) ... [2018-09-20 13:49:04,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d030b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:49:04, skipping insertion in model container [2018-09-20 13:49:04,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:49:04" (3/3) ... [2018-09-20 13:49:04,439 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_square_false-unreach-call_true-termination.c [2018-09-20 13:49:04,448 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 13:49:04,455 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 13:49:04,507 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 13:49:04,508 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 13:49:04,508 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 13:49:04,508 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 13:49:04,508 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 13:49:04,508 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 13:49:04,508 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 13:49:04,508 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 13:49:04,509 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 13:49:04,528 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-09-20 13:49:04,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-20 13:49:04,535 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 13:49:04,536 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 13:49:04,538 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 13:49:04,544 INFO L82 PathProgramCache]: Analyzing trace with hash 697060158, now seen corresponding path program 1 times [2018-09-20 13:49:04,546 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-09-20 13:49:04,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-09-20 13:49:04,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 13:49:04,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 13:49:04,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-20 13:49:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 13:49:04,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 13:49:04,663 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 13:49:04,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:49:04 BoogieIcfgContainer [2018-09-20 13:49:04,684 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 13:49:04,685 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 13:49:04,685 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 13:49:04,685 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 13:49:04,686 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:49:04" (3/4) ... [2018-09-20 13:49:04,690 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-09-20 13:49:04,690 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 13:49:04,691 INFO L168 Benchmark]: Toolchain (without parser) took 887.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 953.2 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. [2018-09-20 13:49:04,693 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-09-20 13:49:04,694 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.46 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 941.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2018-09-20 13:49:04,695 INFO L168 Benchmark]: Boogie Preprocessor took 33.30 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:49:04,696 INFO L168 Benchmark]: RCFGBuilder took 312.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -177.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. [2018-09-20 13:49:04,697 INFO L168 Benchmark]: TraceAbstraction took 256.36 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: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. [2018-09-20 13:49:04,698 INFO L168 Benchmark]: Witness Printer took 5.28 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. [2018-09-20 13:49:04,706 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 271.46 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 941.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 33.30 ms. Allocated memory is still 1.0 GB. Free memory is still 941.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 312.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 135.3 MB). Free memory was 941.1 MB in the beginning and 1.1 GB in the end (delta: -177.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 256.36 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: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. * Witness Printer took 5.28 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: 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 VAL [x=2] [L19] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 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=19occurred 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, 10 NumberOfCodeBlocks, 10 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 0.1.23-40ef509 [2018-09-20 13:49:07,122 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-20 13:49:07,124 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-20 13:49:07,142 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-20 13:49:07,143 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-20 13:49:07,144 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-20 13:49:07,146 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-20 13:49:07,147 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-20 13:49:07,149 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-20 13:49:07,150 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-20 13:49:07,151 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-20 13:49:07,151 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-20 13:49:07,152 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-20 13:49:07,153 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-20 13:49:07,154 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-20 13:49:07,155 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-20 13:49:07,156 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-20 13:49:07,158 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-20 13:49:07,160 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-20 13:49:07,161 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-20 13:49:07,162 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-20 13:49:07,163 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-20 13:49:07,166 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-20 13:49:07,166 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-20 13:49:07,166 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-20 13:49:07,167 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-20 13:49:07,168 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-20 13:49:07,169 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-20 13:49:07,170 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-20 13:49:07,171 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-20 13:49:07,171 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-20 13:49:07,172 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-20 13:49:07,172 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-20 13:49:07,172 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-20 13:49:07,173 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-20 13:49:07,174 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-20 13:49:07,174 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-09-20 13:49:07,190 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-20 13:49:07,190 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-20 13:49:07,191 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-20 13:49:07,192 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-20 13:49:07,192 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-20 13:49:07,192 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-20 13:49:07,193 INFO L133 SettingsManager]: * Use SBE=true [2018-09-20 13:49:07,193 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-20 13:49:07,193 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-20 13:49:07,193 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-20 13:49:07,193 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-20 13:49:07,194 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-20 13:49:07,194 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-20 13:49:07,194 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-20 13:49:07,194 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-20 13:49:07,194 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-20 13:49:07,195 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-20 13:49:07,195 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-20 13:49:07,195 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-20 13:49:07,195 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-20 13:49:07,195 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-20 13:49:07,196 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-20 13:49:07,196 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-20 13:49:07,196 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-20 13:49:07,196 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-20 13:49:07,196 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-20 13:49:07,197 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-20 13:49:07,197 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-20 13:49:07,197 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-20 13:49:07,197 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-20 13:49:07,197 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-20 13:49:07,198 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 [2018-09-20 13:49:07,281 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-20 13:49:07,301 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-20 13:49:07,307 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-20 13:49:07,309 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-20 13:49:07,309 INFO L276 PluginConnector]: CDTParser initialized [2018-09-20 13:49:07,310 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/inv_square_false-unreach-call_true-termination.c [2018-09-20 13:49:07,656 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/644eb7048/5a657efe0afc4e0aa644078ee83ad54d/FLAG2f6819da6 [2018-09-20 13:49:07,808 INFO L277 CDTParser]: Found 1 translation units. [2018-09-20 13:49:07,809 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/inv_square_false-unreach-call_true-termination.c [2018-09-20 13:49:07,815 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/644eb7048/5a657efe0afc4e0aa644078ee83ad54d/FLAG2f6819da6 [2018-09-20 13:49:07,833 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/644eb7048/5a657efe0afc4e0aa644078ee83ad54d [2018-09-20 13:49:07,836 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-20 13:49:07,840 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-20 13:49:07,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-20 13:49:07,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-20 13:49:07,850 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-20 13:49:07,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:49:07" (1/1) ... [2018-09-20 13:49:07,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ac5afb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:49:07, skipping insertion in model container [2018-09-20 13:49:07,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:49:07" (1/1) ... [2018-09-20 13:49:07,867 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-20 13:49:08,132 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:49:08,159 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-20 13:49:08,167 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-20 13:49:08,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:49:08 WrapperNode [2018-09-20 13:49:08,188 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-20 13:49:08,189 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-20 13:49:08,189 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-20 13:49:08,189 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-20 13:49:08,207 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:49:08" (1/1) ... [2018-09-20 13:49:08,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:49:08" (1/1) ... [2018-09-20 13:49:08,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:49:08" (1/1) ... [2018-09-20 13:49:08,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:49:08" (1/1) ... [2018-09-20 13:49:08,222 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:49:08" (1/1) ... [2018-09-20 13:49:08,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:49:08" (1/1) ... [2018-09-20 13:49:08,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:49:08" (1/1) ... [2018-09-20 13:49:08,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-20 13:49:08,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-20 13:49:08,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-20 13:49:08,237 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-20 13:49:08,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:49:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-09-20 13:49:08,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-20 13:49:08,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-20 13:49:08,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-20 13:49:08,323 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-20 13:49:08,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-20 13:49:08,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-20 13:49:08,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-09-20 13:49:08,324 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-20 13:49:08,324 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-20 13:49:08,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-20 13:49:08,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-20 13:49:09,550 INFO L365 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-20 13:49:09,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:49:09 BoogieIcfgContainer [2018-09-20 13:49:09,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-20 13:49:09,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-20 13:49:09,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-20 13:49:09,556 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-20 13:49:09,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:49:07" (1/3) ... [2018-09-20 13:49:09,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a21e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:49:09, skipping insertion in model container [2018-09-20 13:49:09,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:49:08" (2/3) ... [2018-09-20 13:49:09,558 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30a21e77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:49:09, skipping insertion in model container [2018-09-20 13:49:09,558 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:49:09" (3/3) ... [2018-09-20 13:49:09,560 INFO L112 eAbstractionObserver]: Analyzing ICFG inv_square_false-unreach-call_true-termination.c [2018-09-20 13:49:09,570 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-20 13:49:09,579 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-20 13:49:09,634 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-20 13:49:09,635 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-20 13:49:09,635 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-20 13:49:09,635 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-20 13:49:09,635 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-20 13:49:09,636 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-20 13:49:09,636 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-20 13:49:09,636 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-20 13:49:09,637 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-20 13:49:09,657 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-09-20 13:49:09,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-20 13:49:09,664 INFO L368 BasicCegarLoop]: Found error trace [2018-09-20 13:49:09,666 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-20 13:49:09,668 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-20 13:49:09,675 INFO L82 PathProgramCache]: Analyzing trace with hash 697060158, now seen corresponding path program 1 times [2018-09-20 13:49:09,680 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-20 13:49:09,681 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-09-20 13:49:09,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-20 13:49:09,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 13:49:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-09-20 13:49:10,051 INFO L443 BasicCegarLoop]: Counterexample might be feasible [2018-09-20 13:49:10,075 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:49:10 BoogieIcfgContainer [2018-09-20 13:49:10,076 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-20 13:49:10,076 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-09-20 13:49:10,076 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-09-20 13:49:10,077 INFO L276 PluginConnector]: Witness Printer initialized [2018-09-20 13:49:10,078 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:49:09" (3/4) ... [2018-09-20 13:49:10,081 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-09-20 13:49:10,130 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-09-20 13:49:10,130 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-09-20 13:49:10,131 INFO L168 Benchmark]: Toolchain (without parser) took 2294.27 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 953.2 MB in the beginning and 1.1 GB in the end (delta: -143.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:49:10,133 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-09-20 13:49:10,134 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.47 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-09-20 13:49:10,135 INFO L168 Benchmark]: Boogie Preprocessor took 47.82 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-09-20 13:49:10,135 INFO L168 Benchmark]: RCFGBuilder took 1314.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -173.4 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. [2018-09-20 13:49:10,136 INFO L168 Benchmark]: TraceAbstraction took 523.46 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: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 11.5 GB. [2018-09-20 13:49:10,137 INFO L168 Benchmark]: Witness Printer took 54.27 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. [2018-09-20 13:49:10,141 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 346.47 ms. Allocated memory is still 1.0 GB. Free memory was 953.2 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.82 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 1314.38 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -173.4 MB). Peak memory consumption was 27.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 523.46 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: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 11.5 GB. * Witness Printer took 54.27 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 VAL [x=-0.000000000000000000000000000025243548967072378, y=0.0] [L19] CALL __VERIFIER_assert(y != 0.f) VAL [\old(cond)=0] [L8] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. UNSAFE Result, 0.4s 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=19occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 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...