/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1071.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:55:14,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:55:14,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:55:14,524 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:55:14,524 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:55:14,526 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:55:14,528 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:55:14,530 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:55:14,533 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:55:14,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:55:14,536 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:55:14,537 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:55:14,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:55:14,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:55:14,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:55:14,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:55:14,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:55:14,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:55:14,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:55:14,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:55:14,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:55:14,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:55:14,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:55:14,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:55:14,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 17:55:14,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:55:14,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:55:14,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:55:14,612 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 17:55:14,639 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:55:14,639 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:55:14,641 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:55:14,641 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:55:14,641 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:55:14,641 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:55:14,641 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:55:14,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:55:14,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:55:14,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:55:14,642 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:55:14,642 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:55:14,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:55:14,643 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:55:14,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:55:14,643 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:55:14,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:55:14,644 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:55:14,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:55:14,644 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:55:14,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:55:14,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:55:14,645 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:55:14,645 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:55:14,645 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:55:14,645 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:55:14,645 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:55:14,646 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:55:14,646 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:55:14,646 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:55:15,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:55:15,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:55:15,074 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:55:15,075 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:55:15,076 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:55:15,077 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1071.c [2020-10-23 17:55:15,161 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cd72b899/1af0069b18a54702a1ac40538fbdb430/FLAG28233b62c [2020-10-23 17:55:15,846 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:55:15,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1071.c [2020-10-23 17:55:15,870 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cd72b899/1af0069b18a54702a1ac40538fbdb430/FLAG28233b62c [2020-10-23 17:55:16,218 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4cd72b899/1af0069b18a54702a1ac40538fbdb430 [2020-10-23 17:55:16,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:55:16,230 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:55:16,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:16,234 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:55:16,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:55:16,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:16" (1/1) ... [2020-10-23 17:55:16,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ebe2121 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:16, skipping insertion in model container [2020-10-23 17:55:16,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:16" (1/1) ... [2020-10-23 17:55:16,254 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:55:16,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:55:16,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:16,481 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:55:16,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:16,541 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:55:16,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:16 WrapperNode [2020-10-23 17:55:16,542 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:16,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:55:16,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:55:16,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:55:16,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:16" (1/1) ... [2020-10-23 17:55:16,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:16" (1/1) ... [2020-10-23 17:55:16,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:16" (1/1) ... [2020-10-23 17:55:16,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:16" (1/1) ... [2020-10-23 17:55:16,604 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:16" (1/1) ... [2020-10-23 17:55:16,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:16" (1/1) ... [2020-10-23 17:55:16,642 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:16" (1/1) ... [2020-10-23 17:55:16,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:55:16,646 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:55:16,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:55:16,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:55:16,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:55:16,740 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:55:16,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:55:16,741 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:55:16,741 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-23 17:55:16,741 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2020-10-23 17:55:16,742 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:55:16,742 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:55:16,742 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:55:16,742 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:55:16,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:55:16,743 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-23 17:55:16,743 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2020-10-23 17:55:16,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 17:55:16,743 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:55:16,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:55:16,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:55:16,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 17:55:16,744 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:55:16,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:55:16,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:55:16,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:55:17,418 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:55:17,418 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-23 17:55:17,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:17 BoogieIcfgContainer [2020-10-23 17:55:17,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:55:17,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:55:17,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:55:17,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:55:17,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:55:16" (1/3) ... [2020-10-23 17:55:17,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e98714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:17, skipping insertion in model container [2020-10-23 17:55:17,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:16" (2/3) ... [2020-10-23 17:55:17,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e98714 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:17, skipping insertion in model container [2020-10-23 17:55:17,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:17" (3/3) ... [2020-10-23 17:55:17,430 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1071.c [2020-10-23 17:55:17,443 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:55:17,450 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:55:17,467 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:55:17,499 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:55:17,500 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:55:17,500 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:55:17,500 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:55:17,500 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:55:17,501 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:55:17,501 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:55:17,501 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:55:17,522 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-23 17:55:17,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 17:55:17,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:55:17,530 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:55:17,530 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:55:17,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:55:17,538 INFO L82 PathProgramCache]: Analyzing trace with hash 427203542, now seen corresponding path program 1 times [2020-10-23 17:55:17,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:55:17,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062275304] [2020-10-23 17:55:17,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:55:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:17,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:55:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:17,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 17:55:17,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:17,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-23 17:55:17,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:17,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:55:17,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062275304] [2020-10-23 17:55:17,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:55:17,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 17:55:17,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23940838] [2020-10-23 17:55:17,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 17:55:17,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:55:17,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 17:55:17,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 17:55:17,925 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 4 states. [2020-10-23 17:55:18,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:55:18,247 INFO L93 Difference]: Finished difference Result 71 states and 96 transitions. [2020-10-23 17:55:18,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 17:55:18,250 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-23 17:55:18,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:55:18,260 INFO L225 Difference]: With dead ends: 71 [2020-10-23 17:55:18,261 INFO L226 Difference]: Without dead ends: 34 [2020-10-23 17:55:18,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 17:55:18,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-23 17:55:18,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-23 17:55:18,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-23 17:55:18,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-10-23 17:55:18,311 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 24 [2020-10-23 17:55:18,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:55:18,311 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-10-23 17:55:18,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 17:55:18,312 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-10-23 17:55:18,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-23 17:55:18,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:55:18,313 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:55:18,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:55:18,314 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:55:18,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:55:18,315 INFO L82 PathProgramCache]: Analyzing trace with hash 415878468, now seen corresponding path program 1 times [2020-10-23 17:55:18,315 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:55:18,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15625119] [2020-10-23 17:55:18,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:55:18,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:55:18,386 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:55:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:55:18,468 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:55:18,517 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 17:55:18,518 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 17:55:18,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 17:55:18,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:55:18 BoogieIcfgContainer [2020-10-23 17:55:18,557 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 17:55:18,559 INFO L168 Benchmark]: Toolchain (without parser) took 2334.13 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 140.9 MB in the beginning and 152.8 MB in the end (delta: -11.9 MB). Peak memory consumption was 20.6 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:18,560 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 158.3 MB. Free memory is still 131.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:55:18,561 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.63 ms. Allocated memory is still 158.3 MB. Free memory was 140.5 MB in the beginning and 129.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:18,562 INFO L168 Benchmark]: Boogie Preprocessor took 101.82 ms. Allocated memory is still 158.3 MB. Free memory was 129.9 MB in the beginning and 140.7 MB in the end (delta: -10.8 MB). Peak memory consumption was 4.1 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:18,563 INFO L168 Benchmark]: RCFGBuilder took 774.02 ms. Allocated memory is still 158.3 MB. Free memory was 140.5 MB in the beginning and 120.0 MB in the end (delta: 20.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:18,565 INFO L168 Benchmark]: TraceAbstraction took 1134.56 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 119.5 MB in the beginning and 152.8 MB in the end (delta: -33.3 MB). Peak memory consumption was 772.5 kB. Max. memory is 8.0 GB. [2020-10-23 17:55:18,569 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 158.3 MB. Free memory is still 131.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 308.63 ms. Allocated memory is still 158.3 MB. Free memory was 140.5 MB in the beginning and 129.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 101.82 ms. Allocated memory is still 158.3 MB. Free memory was 129.9 MB in the beginning and 140.7 MB in the end (delta: -10.8 MB). Peak memory consumption was 4.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 774.02 ms. Allocated memory is still 158.3 MB. Free memory was 140.5 MB in the beginning and 120.0 MB in the end (delta: 20.5 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1134.56 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 119.5 MB in the beginning and 152.8 MB in the end (delta: -33.3 MB). Peak memory consumption was 772.5 kB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of bitwiseAnd at line 30. Possible FailurePath: [L70] double x = 0.0 / 0.0; [L72] CALL, EXPR trunc_double(x) VAL [\old(x)=4294967296] [L20] int signbit; [L21] int msw; [L22] unsigned int lsw; [L23] int exponent_less_1023; VAL [\old(x)=4294967296, x=4294967296] [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (msw) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lsw) = ew_u.parts.lsw [L30] signbit = msw & 0x80000000 [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=4294967296, exponent_less_1023=1024, lsw=13, msw=-2, signbit=-1, x=4294967296] [L32] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=4294967296, exponent_less_1023=1024, lsw=13, msw=-2, signbit=-1, x=4294967296] [L49] COND TRUE exponent_less_1023 > 51 VAL [\old(x)=4294967296, exponent_less_1023=1024, lsw=13, msw=-2, signbit=-1, x=4294967296] [L50] COND TRUE exponent_less_1023 == 1024 [L51] return x + x; VAL [\old(x)=4294967296, exponent_less_1023=1024, lsw=13, msw=-2, signbit=-1, x=4294967296] [L72] RET, EXPR trunc_double(x) VAL [trunc_double(x)=4294967299, x=4294967296] [L72] double res = trunc_double(x); [L75] CALL, EXPR isnan_double(res) VAL [\old(x)=4294967299] [L17] return x != x; VAL [\old(x)=4294967299, \result=0, x=4294967299] [L75] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, res=4294967299, x=4294967296] [L75] COND TRUE !isnan_double(res) [L76] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1071.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 10 SDslu, 27 SDs, 0 SdLazy, 37 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1495 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...