./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/inv_square-1.c --full-output -ea --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 03d7b7b3 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/inv_square-1.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa8669e514192921cf64fdf0639cd37a443816328604ea9b0272ab52a6769b9f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 16:23:56,472 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 16:23:56,474 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 16:23:56,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 16:23:56,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 16:23:56,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 16:23:56,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 16:23:56,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 16:23:56,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 16:23:56,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 16:23:56,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 16:23:56,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 16:23:56,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 16:23:56,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 16:23:56,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 16:23:56,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 16:23:56,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 16:23:56,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 16:23:56,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 16:23:56,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 16:23:56,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 16:23:56,519 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 16:23:56,520 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 16:23:56,521 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 16:23:56,523 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 16:23:56,524 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 16:23:56,524 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 16:23:56,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 16:23:56,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 16:23:56,526 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 16:23:56,527 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 16:23:56,527 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 16:23:56,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 16:23:56,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 16:23:56,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 16:23:56,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 16:23:56,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 16:23:56,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 16:23:56,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 16:23:56,532 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 16:23:56,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 16:23:56,533 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-02-20 16:23:56,555 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 16:23:56,556 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 16:23:56,556 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 16:23:56,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 16:23:56,557 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 16:23:56,557 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 16:23:56,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 16:23:56,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 16:23:56,558 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 16:23:56,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 16:23:56,559 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 16:23:56,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-20 16:23:56,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 16:23:56,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 16:23:56,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 16:23:56,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 16:23:56,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 16:23:56,560 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 16:23:56,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 16:23:56,561 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 16:23:56,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 16:23:56,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 16:23:56,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 16:23:56,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 16:23:56,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:23:56,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 16:23:56,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 16:23:56,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 16:23:56,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-20 16:23:56,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-20 16:23:56,563 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 16:23:56,563 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 16:23:56,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 16:23:56,564 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa8669e514192921cf64fdf0639cd37a443816328604ea9b0272ab52a6769b9f [2022-02-20 16:23:56,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 16:23:56,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 16:23:56,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 16:23:56,808 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 16:23:56,809 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 16:23:56,810 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_square-1.c [2022-02-20 16:23:56,865 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/296fc707c/0f06fa0fd00146e0aa820921674bbb5e/FLAG3bf8f9638 [2022-02-20 16:23:57,215 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 16:23:57,216 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-1.c [2022-02-20 16:23:57,220 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/296fc707c/0f06fa0fd00146e0aa820921674bbb5e/FLAG3bf8f9638 [2022-02-20 16:23:57,229 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/296fc707c/0f06fa0fd00146e0aa820921674bbb5e [2022-02-20 16:23:57,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 16:23:57,232 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 16:23:57,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 16:23:57,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 16:23:57,236 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 16:23:57,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:23:57" (1/1) ... [2022-02-20 16:23:57,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ddb7adb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:23:57, skipping insertion in model container [2022-02-20 16:23:57,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:23:57" (1/1) ... [2022-02-20 16:23:57,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 16:23:57,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 16:23:57,411 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-1.c[487,500] [2022-02-20 16:23:57,432 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:23:57,441 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 16:23:57,457 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-1.c[487,500] [2022-02-20 16:23:57,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:23:57,476 INFO L208 MainTranslator]: Completed translation [2022-02-20 16:23:57,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:23:57 WrapperNode [2022-02-20 16:23:57,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 16:23:57,478 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 16:23:57,479 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 16:23:57,479 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 16:23:57,484 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:23:57" (1/1) ... [2022-02-20 16:23:57,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:23:57" (1/1) ... [2022-02-20 16:23:57,508 INFO L137 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 31 [2022-02-20 16:23:57,509 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 16:23:57,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 16:23:57,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 16:23:57,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 16:23:57,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:23:57" (1/1) ... [2022-02-20 16:23:57,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:23:57" (1/1) ... [2022-02-20 16:23:57,518 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:23:57" (1/1) ... [2022-02-20 16:23:57,518 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:23:57" (1/1) ... [2022-02-20 16:23:57,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:23:57" (1/1) ... [2022-02-20 16:23:57,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:23:57" (1/1) ... [2022-02-20 16:23:57,533 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:23:57" (1/1) ... [2022-02-20 16:23:57,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 16:23:57,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 16:23:57,535 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 16:23:57,535 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 16:23:57,536 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:23:57" (1/1) ... [2022-02-20 16:23:57,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:23:57,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 16:23:57,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 16:23:57,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 16:23:57,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 16:23:57,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-20 16:23:57,609 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 16:23:57,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 16:23:57,657 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 16:23:57,658 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 16:23:57,727 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 16:23:57,731 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 16:23:57,732 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-20 16:23:57,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:23:57 BoogieIcfgContainer [2022-02-20 16:23:57,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 16:23:57,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 16:23:57,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 16:23:57,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 16:23:57,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 04:23:57" (1/3) ... [2022-02-20 16:23:57,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd3cccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:23:57, skipping insertion in model container [2022-02-20 16:23:57,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:23:57" (2/3) ... [2022-02-20 16:23:57,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cd3cccc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:23:57, skipping insertion in model container [2022-02-20 16:23:57,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:23:57" (3/3) ... [2022-02-20 16:23:57,740 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square-1.c [2022-02-20 16:23:57,744 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 16:23:57,744 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 16:23:57,778 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 16:23:57,783 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 16:23:57,783 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 16:23:57,795 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:23:57,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-02-20 16:23:57,799 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:23:57,799 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:23:57,799 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:23:57,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:23:57,804 INFO L85 PathProgramCache]: Analyzing trace with hash 1804966375, now seen corresponding path program 1 times [2022-02-20 16:23:57,811 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 16:23:57,812 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577477937] [2022-02-20 16:23:57,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:23:57,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 16:23:57,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:23:57,915 INFO L290 TraceCheckUtils]: 0: Hoare triple {16#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(15, 2);call #Ultimate.allocInit(12, 3); {16#true} is VALID [2022-02-20 16:23:57,916 INFO L290 TraceCheckUtils]: 1: Hoare triple {16#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if ~someBinaryFLOATComparisonOperation(main_~x~0#1, ~someUnaryFLOAToperation(1.0)) && ~someBinaryFLOATComparisonOperation(main_~x~0#1, 1.0) then 1 else 0);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; {16#true} is VALID [2022-02-20 16:23:57,917 INFO L290 TraceCheckUtils]: 2: Hoare triple {16#true} assume 0 == assume_abort_if_not_~cond#1;assume false; {17#false} is VALID [2022-02-20 16:23:57,917 INFO L290 TraceCheckUtils]: 3: Hoare triple {17#false} assume { :end_inline_assume_abort_if_not } true; {17#false} is VALID [2022-02-20 16:23:57,917 INFO L290 TraceCheckUtils]: 4: Hoare triple {17#false} assume ~someBinaryFLOATComparisonOperation(main_~x~0#1, 0.0);main_~y~0#1 := ~someBinaryArithmeticFLOAToperation(main_~x~0#1, main_~x~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if ~someBinaryFLOATComparisonOperation(main_~y~0#1, 0.0) then 1 else 0);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; {17#false} is VALID [2022-02-20 16:23:57,917 INFO L290 TraceCheckUtils]: 5: Hoare triple {17#false} assume 0 == __VERIFIER_assert_~cond#1; {17#false} is VALID [2022-02-20 16:23:57,918 INFO L290 TraceCheckUtils]: 6: Hoare triple {17#false} assume !false; {17#false} is VALID [2022-02-20 16:23:57,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 16:23:57,919 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-20 16:23:57,919 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577477937] [2022-02-20 16:23:57,920 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577477937] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 16:23:57,920 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 16:23:57,920 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-20 16:23:57,921 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436250661] [2022-02-20 16:23:57,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 16:23:57,925 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-02-20 16:23:57,926 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 16:23:57,929 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:23:57,939 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:23:57,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-20 16:23:57,939 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-20 16:23:57,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-20 16:23:57,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 16:23:57,962 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:23:57,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:23:58,000 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-02-20 16:23:58,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 16:23:58,001 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-02-20 16:23:58,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 16:23:58,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:23:58,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 26 transitions. [2022-02-20 16:23:58,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:23:58,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 26 transitions. [2022-02-20 16:23:58,008 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 26 transitions. [2022-02-20 16:23:58,080 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:23:58,087 INFO L225 Difference]: With dead ends: 23 [2022-02-20 16:23:58,087 INFO L226 Difference]: Without dead ends: 8 [2022-02-20 16:23:58,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 16:23:58,092 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 16:23:58,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 16:23:58,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-02-20 16:23:58,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-02-20 16:23:58,134 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 16:23:58,134 INFO L82 GeneralOperation]: Start isEquivalent. First operand 8 states. Second operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:23:58,135 INFO L74 IsIncluded]: Start isIncluded. First operand 8 states. Second operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:23:58,135 INFO L87 Difference]: Start difference. First operand 8 states. Second operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:23:58,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:23:58,136 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2022-02-20 16:23:58,136 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2022-02-20 16:23:58,136 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:23:58,136 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:23:58,137 INFO L74 IsIncluded]: Start isIncluded. First operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 8 states. [2022-02-20 16:23:58,137 INFO L87 Difference]: Start difference. First operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 8 states. [2022-02-20 16:23:58,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:23:58,138 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2022-02-20 16:23:58,138 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2022-02-20 16:23:58,138 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:23:58,138 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:23:58,138 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 16:23:58,138 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 16:23:58,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:23:58,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2022-02-20 16:23:58,140 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2022-02-20 16:23:58,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 16:23:58,141 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2022-02-20 16:23:58,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:23:58,141 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2022-02-20 16:23:58,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-02-20 16:23:58,142 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:23:58,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:23:58,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-20 16:23:58,144 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:23:58,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:23:58,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1806813417, now seen corresponding path program 1 times [2022-02-20 16:23:58,148 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-20 16:23:58,148 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257307923] [2022-02-20 16:23:58,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:23:58,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-20 16:23:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:23:58,179 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 16:23:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:23:58,220 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-20 16:23:58,220 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 16:23:58,222 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-20 16:23:58,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-20 16:23:58,230 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-20 16:23:58,232 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 16:23:58,252 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-02-20 16:23:58,252 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-02-20 16:23:58,252 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2022-02-20 16:23:58,252 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2022-02-20 16:23:58,252 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2022-02-20 16:23:58,252 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2022-02-20 16:23:58,252 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2022-02-20 16:23:58,253 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-02-20 16:23:58,253 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-02-20 16:23:58,253 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2022-02-20 16:23:58,253 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2022-02-20 16:23:58,253 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2022-02-20 16:23:58,253 WARN L170 areAnnotationChecker]: L13-3 has no Hoare annotation [2022-02-20 16:23:58,253 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2022-02-20 16:23:58,253 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-02-20 16:23:58,253 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-02-20 16:23:58,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.02 04:23:58 BoogieIcfgContainer [2022-02-20 16:23:58,254 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-20 16:23:58,255 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-20 16:23:58,255 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-20 16:23:58,255 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-20 16:23:58,255 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:23:57" (3/4) ... [2022-02-20 16:23:58,258 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-02-20 16:23:58,258 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-20 16:23:58,262 INFO L158 Benchmark]: Toolchain (without parser) took 1029.53ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 77.9MB in the beginning and 97.2MB in the end (delta: -19.3MB). Peak memory consumption was 4.8MB. Max. memory is 16.1GB. [2022-02-20 16:23:58,262 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 107.0MB. Free memory is still 59.6MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:23:58,263 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.38ms. Allocated memory is still 107.0MB. Free memory was 77.6MB in the beginning and 81.4MB in the end (delta: -3.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-20 16:23:58,266 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.78ms. Allocated memory is still 107.0MB. Free memory was 81.4MB in the beginning and 79.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 16:23:58,268 INFO L158 Benchmark]: Boogie Preprocessor took 24.09ms. Allocated memory is still 107.0MB. Free memory was 79.8MB in the beginning and 79.1MB in the end (delta: 784.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 16:23:58,269 INFO L158 Benchmark]: RCFGBuilder took 198.64ms. Allocated memory is still 107.0MB. Free memory was 78.8MB in the beginning and 70.0MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-20 16:23:58,269 INFO L158 Benchmark]: TraceAbstraction took 519.41ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 69.7MB in the beginning and 97.2MB in the end (delta: -27.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:23:58,269 INFO L158 Benchmark]: Witness Printer took 3.01ms. Allocated memory is still 130.0MB. Free memory is still 97.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:23:58,275 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 107.0MB. Free memory is still 59.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 244.38ms. Allocated memory is still 107.0MB. Free memory was 77.6MB in the beginning and 81.4MB in the end (delta: -3.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.78ms. Allocated memory is still 107.0MB. Free memory was 81.4MB in the beginning and 79.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.09ms. Allocated memory is still 107.0MB. Free memory was 79.8MB in the beginning and 79.1MB in the end (delta: 784.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 198.64ms. Allocated memory is still 107.0MB. Free memory was 78.8MB in the beginning and 70.0MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 519.41ms. Allocated memory was 107.0MB in the beginning and 130.0MB in the end (delta: 23.1MB). Free memory was 69.7MB in the beginning and 97.2MB in the end (delta: -27.5MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.01ms. Allocated memory is still 130.0MB. Free memory is still 97.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 22, overapproximation of someBinaryArithmeticFLOAToperation at line 23. Possible FailurePath: [L17] float x, y, z; [L19] x = __VERIFIER_nondet_float() [L20] CALL assume_abort_if_not(x >= -1.f && x <= 1.f) [L11] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L20] RET assume_abort_if_not(x >= -1.f && x <= 1.f) [L22] COND TRUE x != 0.f [L23] y = x * x [L24] CALL __VERIFIER_assert(y != 0.f) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 13 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-02-20 16:23:58,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -ea -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/float-benchs/inv_square-1.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(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fa8669e514192921cf64fdf0639cd37a443816328604ea9b0272ab52a6769b9f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-03d7b7b [2022-02-20 16:24:00,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-20 16:24:00,121 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-20 16:24:00,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-20 16:24:00,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-20 16:24:00,150 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-20 16:24:00,151 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-20 16:24:00,153 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-20 16:24:00,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-20 16:24:00,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-20 16:24:00,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-20 16:24:00,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-20 16:24:00,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-20 16:24:00,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-20 16:24:00,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-20 16:24:00,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-20 16:24:00,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-20 16:24:00,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-20 16:24:00,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-20 16:24:00,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-20 16:24:00,170 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-20 16:24:00,171 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-20 16:24:00,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-20 16:24:00,173 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-20 16:24:00,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-02-20 16:24:00,175 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-02-20 16:24:00,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-02-20 16:24:00,176 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-02-20 16:24:00,177 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-02-20 16:24:00,178 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-02-20 16:24:00,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-02-20 16:24:00,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-02-20 16:24:00,179 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-02-20 16:24:00,180 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-02-20 16:24:00,181 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-02-20 16:24:00,181 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-02-20 16:24:00,182 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-02-20 16:24:00,182 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-02-20 16:24:00,182 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-20 16:24:00,183 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-20 16:24:00,184 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-20 16:24:00,185 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-02-20 16:24:00,202 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-20 16:24:00,203 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-20 16:24:00,203 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-20 16:24:00,203 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-20 16:24:00,204 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-20 16:24:00,204 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-20 16:24:00,205 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-20 16:24:00,205 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-20 16:24:00,205 INFO L138 SettingsManager]: * Use SBE=true [2022-02-20 16:24:00,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-20 16:24:00,205 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-20 16:24:00,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-20 16:24:00,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-20 16:24:00,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-20 16:24:00,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-20 16:24:00,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-20 16:24:00,207 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-02-20 16:24:00,207 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-02-20 16:24:00,207 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-02-20 16:24:00,207 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-20 16:24:00,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-20 16:24:00,208 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-20 16:24:00,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-20 16:24:00,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-20 16:24:00,208 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-20 16:24:00,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-20 16:24:00,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:24:00,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-20 16:24:00,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-20 16:24:00,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-20 16:24:00,209 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-02-20 16:24:00,210 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-02-20 16:24:00,210 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-20 16:24:00,210 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-02-20 16:24:00,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-20 16:24:00,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-20 16:24:00,211 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fa8669e514192921cf64fdf0639cd37a443816328604ea9b0272ab52a6769b9f [2022-02-20 16:24:00,512 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-20 16:24:00,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-20 16:24:00,535 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-20 16:24:00,536 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-20 16:24:00,537 INFO L275 PluginConnector]: CDTParser initialized [2022-02-20 16:24:00,538 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_square-1.c [2022-02-20 16:24:00,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc5a16825/235b112b4cd042b89090d8aadfcf5ab6/FLAGda2921231 [2022-02-20 16:24:01,019 INFO L306 CDTParser]: Found 1 translation units. [2022-02-20 16:24:01,020 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-1.c [2022-02-20 16:24:01,025 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc5a16825/235b112b4cd042b89090d8aadfcf5ab6/FLAGda2921231 [2022-02-20 16:24:01,041 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dc5a16825/235b112b4cd042b89090d8aadfcf5ab6 [2022-02-20 16:24:01,044 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-20 16:24:01,046 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-02-20 16:24:01,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-20 16:24:01,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-20 16:24:01,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-20 16:24:01,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:24:01" (1/1) ... [2022-02-20 16:24:01,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@691c39a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:01, skipping insertion in model container [2022-02-20 16:24:01,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 04:24:01" (1/1) ... [2022-02-20 16:24:01,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-20 16:24:01,075 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-20 16:24:01,214 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-1.c[487,500] [2022-02-20 16:24:01,235 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:24:01,247 INFO L203 MainTranslator]: Completed pre-run [2022-02-20 16:24:01,257 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_square-1.c[487,500] [2022-02-20 16:24:01,259 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-20 16:24:01,302 INFO L208 MainTranslator]: Completed translation [2022-02-20 16:24:01,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:01 WrapperNode [2022-02-20 16:24:01,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-20 16:24:01,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-20 16:24:01,307 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-20 16:24:01,307 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-20 16:24:01,315 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:01" (1/1) ... [2022-02-20 16:24:01,324 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:01" (1/1) ... [2022-02-20 16:24:01,343 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 32 [2022-02-20 16:24:01,344 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-20 16:24:01,345 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-20 16:24:01,345 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-20 16:24:01,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-20 16:24:01,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:01" (1/1) ... [2022-02-20 16:24:01,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:01" (1/1) ... [2022-02-20 16:24:01,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:01" (1/1) ... [2022-02-20 16:24:01,365 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:01" (1/1) ... [2022-02-20 16:24:01,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:01" (1/1) ... [2022-02-20 16:24:01,379 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:01" (1/1) ... [2022-02-20 16:24:01,380 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:01" (1/1) ... [2022-02-20 16:24:01,381 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-20 16:24:01,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-20 16:24:01,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-20 16:24:01,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-20 16:24:01,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:01" (1/1) ... [2022-02-20 16:24:01,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-20 16:24:01,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-20 16:24:01,411 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-20 16:24:01,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-20 16:24:01,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-20 16:24:01,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-02-20 16:24:01,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-20 16:24:01,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-20 16:24:01,497 INFO L234 CfgBuilder]: Building ICFG [2022-02-20 16:24:01,499 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-20 16:24:02,403 INFO L275 CfgBuilder]: Performing block encoding [2022-02-20 16:24:02,407 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-20 16:24:02,407 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-02-20 16:24:02,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:24:02 BoogieIcfgContainer [2022-02-20 16:24:02,409 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-20 16:24:02,411 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-20 16:24:02,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-20 16:24:02,415 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-20 16:24:02,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 04:24:01" (1/3) ... [2022-02-20 16:24:02,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a96743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:24:02, skipping insertion in model container [2022-02-20 16:24:02,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 04:24:01" (2/3) ... [2022-02-20 16:24:02,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a96743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 04:24:02, skipping insertion in model container [2022-02-20 16:24:02,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:24:02" (3/3) ... [2022-02-20 16:24:02,419 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_square-1.c [2022-02-20 16:24:02,423 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-20 16:24:02,423 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-20 16:24:02,456 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-20 16:24:02,460 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-20 16:24:02,461 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-20 16:24:02,472 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:02,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-02-20 16:24:02,476 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:24:02,476 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:24:02,477 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:24:02,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:24:02,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1804966375, now seen corresponding path program 1 times [2022-02-20 16:24:02,495 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 16:24:02,495 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312752556] [2022-02-20 16:24:02,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:24:02,497 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 16:24:02,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 16:24:02,504 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 16:24:02,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-02-20 16:24:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:24:02,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2022-02-20 16:24:02,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-20 16:24:02,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-20 16:24:02,642 INFO L290 TraceCheckUtils]: 0: Hoare triple {16#true} assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0bv32, 0bv32;assume 0bv1 == #valid[0bv32];assume ~bvult32(0bv32, #StackHeapBarrier);currentRoundingMode := ~roundNearestTiesToEven;call #Ultimate.allocInit(2bv32, 1bv32);call write~init~intINTTYPE1(48bv8, 1bv32, 0bv32, 1bv32);call write~init~intINTTYPE1(0bv8, 1bv32, 1bv32, 1bv32);call #Ultimate.allocInit(15bv32, 2bv32);call #Ultimate.allocInit(12bv32, 3bv32); {16#true} is VALID [2022-02-20 16:24:02,642 INFO L290 TraceCheckUtils]: 1: Hoare triple {16#true} assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_~x~0#1, main_~y~0#1, main_~z~0#1;havoc main_~x~0#1;havoc main_~y~0#1;havoc main_~z~0#1;main_~x~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;assume { :begin_inline_assume_abort_if_not } true;assume_abort_if_not_#in~cond#1 := (if ~fp.geq~FLOAT(main_~x~0#1, ~fp.neg~FLOAT(~to_fp~FLOAT(currentRoundingMode, 1.0))) && ~fp.leq~FLOAT(main_~x~0#1, ~to_fp~FLOAT(currentRoundingMode, 1.0)) then 1bv32 else 0bv32);havoc assume_abort_if_not_~cond#1;assume_abort_if_not_~cond#1 := assume_abort_if_not_#in~cond#1; {16#true} is VALID [2022-02-20 16:24:02,643 INFO L290 TraceCheckUtils]: 2: Hoare triple {16#true} assume 0bv32 == assume_abort_if_not_~cond#1;assume false; {17#false} is VALID [2022-02-20 16:24:02,643 INFO L290 TraceCheckUtils]: 3: Hoare triple {17#false} assume { :end_inline_assume_abort_if_not } true; {17#false} is VALID [2022-02-20 16:24:02,644 INFO L290 TraceCheckUtils]: 4: Hoare triple {17#false} assume !~fp.eq~FLOAT(main_~x~0#1, ~Pluszero~FLOAT());main_~y~0#1 := ~fp.mul~FLOAT(currentRoundingMode, main_~x~0#1, main_~x~0#1);assume { :begin_inline___VERIFIER_assert } true;__VERIFIER_assert_#in~cond#1 := (if !~fp.eq~FLOAT(main_~y~0#1, ~Pluszero~FLOAT()) then 1bv32 else 0bv32);havoc __VERIFIER_assert_~cond#1;__VERIFIER_assert_~cond#1 := __VERIFIER_assert_#in~cond#1; {17#false} is VALID [2022-02-20 16:24:02,644 INFO L290 TraceCheckUtils]: 5: Hoare triple {17#false} assume 0bv32 == __VERIFIER_assert_~cond#1; {17#false} is VALID [2022-02-20 16:24:02,644 INFO L290 TraceCheckUtils]: 6: Hoare triple {17#false} assume !false; {17#false} is VALID [2022-02-20 16:24:02,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-20 16:24:02,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-02-20 16:24:02,646 INFO L144 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-02-20 16:24:02,646 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [312752556] [2022-02-20 16:24:02,646 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleMathsat [312752556] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-20 16:24:02,647 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-20 16:24:02,647 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-02-20 16:24:02,648 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134198612] [2022-02-20 16:24:02,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-20 16:24:02,653 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-02-20 16:24:02,653 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-02-20 16:24:02,656 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:02,691 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 7 edges. 7 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:24:02,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-02-20 16:24:02,692 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-02-20 16:24:02,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-02-20 16:24:02,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 16:24:02,711 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 12 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:03,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:24:03,539 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2022-02-20 16:24:03,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-02-20 16:24:03,540 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-02-20 16:24:03,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-20 16:24:03,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:03,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 26 transitions. [2022-02-20 16:24:03,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:03,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 26 transitions. [2022-02-20 16:24:03,547 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 26 transitions. [2022-02-20 16:24:03,810 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-02-20 16:24:03,816 INFO L225 Difference]: With dead ends: 23 [2022-02-20 16:24:03,816 INFO L226 Difference]: Without dead ends: 8 [2022-02-20 16:24:03,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-02-20 16:24:03,821 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-20 16:24:03,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-20 16:24:03,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-02-20 16:24:03,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-02-20 16:24:03,841 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-02-20 16:24:03,841 INFO L82 GeneralOperation]: Start isEquivalent. First operand 8 states. Second operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:03,842 INFO L74 IsIncluded]: Start isIncluded. First operand 8 states. Second operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:03,842 INFO L87 Difference]: Start difference. First operand 8 states. Second operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:03,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:24:03,844 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2022-02-20 16:24:03,844 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2022-02-20 16:24:03,844 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:24:03,844 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:24:03,845 INFO L74 IsIncluded]: Start isIncluded. First operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 8 states. [2022-02-20 16:24:03,845 INFO L87 Difference]: Start difference. First operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 8 states. [2022-02-20 16:24:03,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-20 16:24:03,846 INFO L93 Difference]: Finished difference Result 8 states and 7 transitions. [2022-02-20 16:24:03,846 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2022-02-20 16:24:03,846 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-20 16:24:03,847 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-02-20 16:24:03,847 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-02-20 16:24:03,847 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-02-20 16:24:03,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:03,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2022-02-20 16:24:03,849 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 7 [2022-02-20 16:24:03,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-20 16:24:03,849 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2022-02-20 16:24:03,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-20 16:24:03,850 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2022-02-20 16:24:03,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-02-20 16:24:03,850 INFO L506 BasicCegarLoop]: Found error trace [2022-02-20 16:24:03,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-20 16:24:03,863 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-02-20 16:24:04,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-02-20 16:24:04,062 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-20 16:24:04,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-20 16:24:04,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1806813417, now seen corresponding path program 1 times [2022-02-20 16:24:04,063 INFO L126 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-02-20 16:24:04,064 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246664256] [2022-02-20 16:24:04,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-20 16:24:04,064 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-02-20 16:24:04,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-02-20 16:24:04,065 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-02-20 16:24:04,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-02-20 16:24:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:24:04,139 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-20 16:24:04,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-20 16:24:04,242 INFO L138 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-02-20 16:24:04,243 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-20 16:24:04,245 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-20 16:24:04,257 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-02-20 16:24:04,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-02-20 16:24:04,454 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-20 16:24:04,457 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-20 16:24:04,479 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-02-20 16:24:04,479 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-02-20 16:24:04,479 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2022-02-20 16:24:04,479 WARN L170 areAnnotationChecker]: L11 has no Hoare annotation [2022-02-20 16:24:04,479 WARN L170 areAnnotationChecker]: L10 has no Hoare annotation [2022-02-20 16:24:04,480 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2022-02-20 16:24:04,480 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2022-02-20 16:24:04,480 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-02-20 16:24:04,480 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-02-20 16:24:04,480 WARN L170 areAnnotationChecker]: L22-2 has no Hoare annotation [2022-02-20 16:24:04,480 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2022-02-20 16:24:04,480 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2022-02-20 16:24:04,480 WARN L170 areAnnotationChecker]: L13-3 has no Hoare annotation [2022-02-20 16:24:04,481 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2022-02-20 16:24:04,481 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-02-20 16:24:04,481 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-02-20 16:24:04,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.02 04:24:04 BoogieIcfgContainer [2022-02-20 16:24:04,482 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-20 16:24:04,483 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-02-20 16:24:04,483 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-02-20 16:24:04,484 INFO L275 PluginConnector]: Witness Printer initialized [2022-02-20 16:24:04,484 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 04:24:02" (3/4) ... [2022-02-20 16:24:04,485 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-02-20 16:24:04,537 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-02-20 16:24:04,537 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-02-20 16:24:04,538 INFO L158 Benchmark]: Toolchain (without parser) took 3492.19ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 29.0MB in the beginning and 39.5MB in the end (delta: -10.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:24:04,538 INFO L158 Benchmark]: CDTParser took 0.59ms. Allocated memory is still 52.4MB. Free memory was 34.0MB in the beginning and 33.9MB in the end (delta: 60.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:24:04,540 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.58ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 28.8MB in the beginning and 46.2MB in the end (delta: -17.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-02-20 16:24:04,541 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.15ms. Allocated memory is still 62.9MB. Free memory was 46.0MB in the beginning and 44.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:24:04,541 INFO L158 Benchmark]: Boogie Preprocessor took 36.48ms. Allocated memory is still 62.9MB. Free memory was 44.4MB in the beginning and 43.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2022-02-20 16:24:04,541 INFO L158 Benchmark]: RCFGBuilder took 1027.50ms. Allocated memory is still 62.9MB. Free memory was 43.2MB in the beginning and 34.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-02-20 16:24:04,542 INFO L158 Benchmark]: TraceAbstraction took 2070.99ms. Allocated memory is still 62.9MB. Free memory was 34.3MB in the beginning and 41.5MB in the end (delta: -7.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-02-20 16:24:04,542 INFO L158 Benchmark]: Witness Printer took 53.89ms. Allocated memory is still 62.9MB. Free memory was 41.3MB in the beginning and 39.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-02-20 16:24:04,546 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59ms. Allocated memory is still 52.4MB. Free memory was 34.0MB in the beginning and 33.9MB in the end (delta: 60.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 258.58ms. Allocated memory was 52.4MB in the beginning and 62.9MB in the end (delta: 10.5MB). Free memory was 28.8MB in the beginning and 46.2MB in the end (delta: -17.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.15ms. Allocated memory is still 62.9MB. Free memory was 46.0MB in the beginning and 44.4MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.48ms. Allocated memory is still 62.9MB. Free memory was 44.4MB in the beginning and 43.2MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 1027.50ms. Allocated memory is still 62.9MB. Free memory was 43.2MB in the beginning and 34.8MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2070.99ms. Allocated memory is still 62.9MB. Free memory was 34.3MB in the beginning and 41.5MB in the end (delta: -7.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Witness Printer took 53.89ms. Allocated memory is still 62.9MB. Free memory was 41.3MB in the beginning and 39.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] float x, y, z; [L19] x = __VERIFIER_nondet_float() [L20] CALL assume_abort_if_not(x >= -1.f && x <= 1.f) [L11] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L20] RET assume_abort_if_not(x >= -1.f && x <= 1.f) [L22] COND TRUE x != 0.f [L23] y = x * x [L24] CALL __VERIFIER_assert(y != 0.f) [L13] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L13] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 13 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 13 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 25 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-02-20 16:24:04,606 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE