/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/loop-floats-scientific-comp/loop1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 20:15:57,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:15:57,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:15:57,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:15:57,493 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:15:57,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:15:57,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:15:57,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:15:57,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:15:57,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:15:57,515 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:15:57,517 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:15:57,517 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:15:57,520 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:15:57,523 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:15:57,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:15:57,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:15:57,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:15:57,538 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:15:57,545 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:15:57,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:15:57,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:15:57,560 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:15:57,562 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:15:57,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:15:57,568 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:15:57,569 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:15:57,574 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:15:57,575 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:15:57,575 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:15:57,576 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:15:57,577 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:15:57,578 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:15:57,579 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:15:57,580 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:15:57,580 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:15:57,581 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:15:57,581 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:15:57,582 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:15:57,582 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:15:57,583 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:15:57,591 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 20:15:57,637 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:15:57,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:15:57,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:15:57,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:15:57,642 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:15:57,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:15:57,642 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:15:57,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:15:57,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:15:57,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:15:57,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:15:57,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:15:57,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:15:57,643 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:15:57,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:15:57,644 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:15:57,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:15:57,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:15:57,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:15:57,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:15:57,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:15:57,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:15:57,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:15:57,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:15:57,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:15:57,646 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:15:57,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:15:57,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:15:57,647 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:15:57,647 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:15:58,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:15:58,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:15:58,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:15:58,071 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:15:58,072 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:15:58,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-floats-scientific-comp/loop1-2.c [2020-10-27 20:15:58,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f567a19c3/e48dcb1a18a9452b9dccb6c1e35044b7/FLAG387b75500 [2020-10-27 20:15:58,789 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:15:58,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-floats-scientific-comp/loop1-2.c [2020-10-27 20:15:58,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f567a19c3/e48dcb1a18a9452b9dccb6c1e35044b7/FLAG387b75500 [2020-10-27 20:15:59,173 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f567a19c3/e48dcb1a18a9452b9dccb6c1e35044b7 [2020-10-27 20:15:59,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:15:59,185 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:15:59,186 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:15:59,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:15:59,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:15:59,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:15:59" (1/1) ... [2020-10-27 20:15:59,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bf1f6a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:15:59, skipping insertion in model container [2020-10-27 20:15:59,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:15:59" (1/1) ... [2020-10-27 20:15:59,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:15:59,224 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:15:59,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:15:59,397 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:15:59,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:15:59,432 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:15:59,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:15:59 WrapperNode [2020-10-27 20:15:59,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:15:59,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:15:59,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:15:59,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:15:59,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:15:59" (1/1) ... [2020-10-27 20:15:59,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:15:59" (1/1) ... [2020-10-27 20:15:59,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:15:59" (1/1) ... [2020-10-27 20:15:59,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:15:59" (1/1) ... [2020-10-27 20:15:59,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:15:59" (1/1) ... [2020-10-27 20:15:59,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:15:59" (1/1) ... [2020-10-27 20:15:59,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:15:59" (1/1) ... [2020-10-27 20:15:59,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:15:59,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:15:59,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:15:59,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:15:59,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:15:59" (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 20:15:59,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:15:59,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:15:59,560 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:15:59,561 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 20:15:59,561 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 20:15:59,561 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:15:59,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-27 20:15:59,562 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:15:59,562 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:15:59,562 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:15:59,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:15:59,564 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 20:15:59,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 20:15:59,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 20:15:59,565 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:15:59,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:15:59,566 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:15:59,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:15:59,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:15:59,567 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:15:59,567 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:16:00,060 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:16:00,061 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 20:16:00,063 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:16:00 BoogieIcfgContainer [2020-10-27 20:16:00,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:16:00,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:16:00,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:16:00,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:16:00,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:15:59" (1/3) ... [2020-10-27 20:16:00,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43fcb0a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:16:00, skipping insertion in model container [2020-10-27 20:16:00,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:15:59" (2/3) ... [2020-10-27 20:16:00,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43fcb0a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:16:00, skipping insertion in model container [2020-10-27 20:16:00,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:16:00" (3/3) ... [2020-10-27 20:16:00,075 INFO L111 eAbstractionObserver]: Analyzing ICFG loop1-2.c [2020-10-27 20:16:00,088 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:16:00,094 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:16:00,107 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:16:00,174 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:16:00,174 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:16:00,174 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:16:00,175 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:16:00,175 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:16:00,175 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:16:00,175 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:16:00,175 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:16:00,217 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-27 20:16:00,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-27 20:16:00,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:16:00,224 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:16:00,224 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:16:00,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:16:00,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1812719549, now seen corresponding path program 1 times [2020-10-27 20:16:00,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:16:00,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763417357] [2020-10-27 20:16:00,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:16:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:16:00,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:16:00,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:16:00,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 20:16:00,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:16:00,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 20:16:00,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:16:00,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:16:00,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:16:00,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:16:00,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:16:00,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:16:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:16:00,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:16:00,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:16:00,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:16:00,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:16:00,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 20:16:00,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:16:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:16:00,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:16:00,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:16:00,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:16:00,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 20:16:00,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763417357] [2020-10-27 20:16:00,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:16:00,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 20:16:00,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47671048] [2020-10-27 20:16:00,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 20:16:00,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:16:00,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 20:16:00,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 20:16:00,663 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-10-27 20:16:00,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:16:00,723 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-10-27 20:16:00,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 20:16:00,725 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-10-27 20:16:00,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:16:00,732 INFO L225 Difference]: With dead ends: 37 [2020-10-27 20:16:00,733 INFO L226 Difference]: Without dead ends: 14 [2020-10-27 20:16:00,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 20:16:00,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-10-27 20:16:00,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-10-27 20:16:00,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-10-27 20:16:00,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-10-27 20:16:00,777 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-10-27 20:16:00,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:16:00,777 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-10-27 20:16:00,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 20:16:00,777 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-10-27 20:16:00,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-27 20:16:00,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:16:00,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:16:00,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:16:00,779 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:16:00,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:16:00,780 INFO L82 PathProgramCache]: Analyzing trace with hash 709604994, now seen corresponding path program 1 times [2020-10-27 20:16:00,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:16:00,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132899683] [2020-10-27 20:16:00,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:16:00,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 20:16:00,809 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 20:16:00,809 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 20:16:00,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:16:00,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 08:16:00 BoogieIcfgContainer [2020-10-27 20:16:00,828 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 20:16:00,831 INFO L168 Benchmark]: Toolchain (without parser) took 1651.05 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 102.3 MB in the end (delta: 24.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 8.0 GB. [2020-10-27 20:16:00,832 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:16:00,833 INFO L168 Benchmark]: CACSL2BoogieTranslator took 247.21 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 20:16:00,834 INFO L168 Benchmark]: Boogie Preprocessor took 38.01 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 20:16:00,835 INFO L168 Benchmark]: RCFGBuilder took 589.93 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 101.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-27 20:16:00,835 INFO L168 Benchmark]: TraceAbstraction took 762.36 ms. Allocated memory is still 151.0 MB. Free memory was 100.9 MB in the beginning and 102.3 MB in the end (delta: -1.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 20:16:00,839 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 247.21 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.01 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 589.93 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 101.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 762.36 ms. Allocated memory is still 151.0 MB. Free memory was 100.9 MB in the beginning and 102.3 MB in the end (delta: -1.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 9]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 37, overapproximation of someBinaryArithmeticFLOAToperation at line 29. Possible FailurePath: [L20] float x = __VERIFIER_nondet_float() ; [L21] float exp = 1.0 ; [L22] float term = 1.0 ; [L23] unsigned int count = 1 ; [L24] float result = 2*(1/(1-x)) ; [L25] int temp ; [L27] COND TRUE 1 [L29] term = term * (x/count) [L30] exp = exp + term [L31] count++ [L33] temp = __VERIFIER_nondet_int() [L34] COND TRUE temp ==0 [L37] CALL __VERIFIER_assert( result >= exp ) [L14] COND TRUE !(cond) [L14] CALL reach_error() [L9] __assert_fail("0", "loop1-2.c", 9, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 11 SDslu, 3 SDs, 0 SdLazy, 4 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 25 NumberOfCodeBlocks, 25 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 451 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 Received shutdown request...