/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/floats-esbmc-regression/Float_div_bad.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:45:44,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:45:44,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:45:44,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:45:44,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:45:44,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:45:44,991 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:45:44,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:45:44,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:45:45,006 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:45:45,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:45:45,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:45:45,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:45:45,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:45:45,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:45:45,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:45:45,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:45:45,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:45:45,047 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:45:45,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:45:45,053 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:45:45,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:45:45,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:45:45,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:45:45,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:45:45,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:45:45,071 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:45:45,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:45:45,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:45:45,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:45:45,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:45:45,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:45:45,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:45:45,079 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:45:45,080 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:45:45,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:45:45,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:45:45,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:45:45,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:45:45,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:45:45,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:45:45,091 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 19:45:45,142 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:45:45,142 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:45:45,146 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:45:45,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:45:45,147 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:45:45,147 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:45:45,147 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:45:45,148 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:45:45,148 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:45:45,148 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:45:45,149 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:45:45,149 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:45:45,150 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:45:45,150 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:45:45,150 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:45:45,150 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:45:45,151 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:45:45,151 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:45:45,151 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:45:45,151 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:45:45,151 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:45:45,152 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:45:45,152 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:45:45,152 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:45:45,152 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:45:45,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:45:45,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:45:45,153 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:45:45,153 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:45:45,153 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:45:45,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:45:45,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:45:45,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:45:45,639 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:45:45,640 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:45:45,641 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-esbmc-regression/Float_div_bad.i [2020-10-27 19:45:45,720 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14fcf3574/b0cd043fc0d14814af126937eba325f2/FLAG760e92a8e [2020-10-27 19:45:46,362 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:45:46,363 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/floats-esbmc-regression/Float_div_bad.i [2020-10-27 19:45:46,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14fcf3574/b0cd043fc0d14814af126937eba325f2/FLAG760e92a8e [2020-10-27 19:45:46,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14fcf3574/b0cd043fc0d14814af126937eba325f2 [2020-10-27 19:45:46,719 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:45:46,726 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:45:46,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:45:46,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:45:46,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:45:46,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:45:46" (1/1) ... [2020-10-27 19:45:46,737 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ccd17af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:46, skipping insertion in model container [2020-10-27 19:45:46,737 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:45:46" (1/1) ... [2020-10-27 19:45:46,746 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:45:46,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:45:46,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:45:46,945 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:45:46,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:45:46,981 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:45:46,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:46 WrapperNode [2020-10-27 19:45:46,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:45:46,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:45:46,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:45:46,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:45:46,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:46" (1/1) ... [2020-10-27 19:45:46,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:46" (1/1) ... [2020-10-27 19:45:47,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:46" (1/1) ... [2020-10-27 19:45:47,008 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:46" (1/1) ... [2020-10-27 19:45:47,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:46" (1/1) ... [2020-10-27 19:45:47,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:46" (1/1) ... [2020-10-27 19:45:47,022 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:46" (1/1) ... [2020-10-27 19:45:47,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:45:47,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:45:47,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:45:47,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:45:47,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:45:47,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:45:47,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:45:47,119 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:45:47,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 19:45:47,120 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:45:47,120 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:45:47,120 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:45:47,120 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 19:45:47,121 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 19:45:47,121 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:45:47,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:45:47,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 19:45:47,121 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:45:47,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:45:47,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:45:47,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:45:47,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:45:47,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:45:47,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:45:47,495 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:45:47,495 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 19:45:47,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:45:47 BoogieIcfgContainer [2020-10-27 19:45:47,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:45:47,503 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:45:47,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:45:47,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:45:47,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:45:46" (1/3) ... [2020-10-27 19:45:47,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc2e24c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:45:47, skipping insertion in model container [2020-10-27 19:45:47,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:45:46" (2/3) ... [2020-10-27 19:45:47,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fc2e24c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:45:47, skipping insertion in model container [2020-10-27 19:45:47,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:45:47" (3/3) ... [2020-10-27 19:45:47,523 INFO L111 eAbstractionObserver]: Analyzing ICFG Float_div_bad.i [2020-10-27 19:45:47,546 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:45:47,552 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:45:47,570 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:45:47,661 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:45:47,664 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:45:47,664 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:45:47,665 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:45:47,665 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:45:47,665 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:45:47,665 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:45:47,665 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:45:47,700 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-27 19:45:47,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-27 19:45:47,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:45:47,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:45:47,709 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:45:47,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:45:47,724 INFO L82 PathProgramCache]: Analyzing trace with hash 454397783, now seen corresponding path program 1 times [2020-10-27 19:45:47,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:45:47,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575566493] [2020-10-27 19:45:47,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:45:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:45:47,928 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:45:47,929 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:45:47,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:45:47,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:45:47 BoogieIcfgContainer [2020-10-27 19:45:47,953 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:45:47,958 INFO L168 Benchmark]: Toolchain (without parser) took 1234.17 ms. Allocated memory is still 157.3 MB. Free memory was 133.5 MB in the beginning and 132.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.5 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:47,961 INFO L168 Benchmark]: CDTParser took 0.62 ms. Allocated memory is still 157.3 MB. Free memory is still 129.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:45:47,963 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.98 ms. Allocated memory is still 157.3 MB. Free memory was 132.8 MB in the beginning and 123.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:47,965 INFO L168 Benchmark]: Boogie Preprocessor took 41.16 ms. Allocated memory is still 157.3 MB. Free memory was 123.0 MB in the beginning and 121.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:47,966 INFO L168 Benchmark]: RCFGBuilder took 471.87 ms. Allocated memory is still 157.3 MB. Free memory was 121.4 MB in the beginning and 109.1 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 19:45:47,968 INFO L168 Benchmark]: TraceAbstraction took 451.09 ms. Allocated memory is still 157.3 MB. Free memory was 108.7 MB in the beginning and 132.3 MB in the end (delta: -23.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:45:47,975 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.62 ms. Allocated memory is still 157.3 MB. Free memory is still 129.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 254.98 ms. Allocated memory is still 157.3 MB. Free memory was 132.8 MB in the beginning and 123.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.16 ms. Allocated memory is still 157.3 MB. Free memory was 123.0 MB in the beginning and 121.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 471.87 ms. Allocated memory is still 157.3 MB. Free memory was 121.4 MB in the beginning and 109.1 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 451.09 ms. Allocated memory is still 157.3 MB. Free memory was 108.7 MB in the beginning and 132.3 MB in the end (delta: -23.6 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 29, overapproximation of someBinaryArithmeticFLOAToperation at line 21. Possible FailurePath: [L20] float x = 1.0f; [L21] float x1 = x/1.6f; [L23] COND FALSE !(x1 != x) [L29] CALL __VERIFIER_assert(x == 0) [L13] COND TRUE !(cond) [L13] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "Float_div_bad.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, 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 Received shutdown request...