/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_1252b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:55:35,594 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:55:35,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:55:35,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:55:35,657 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:55:35,662 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:55:35,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:55:35,676 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:55:35,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:55:35,688 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:55:35,690 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:55:35,692 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:55:35,692 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:55:35,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:55:35,699 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:55:35,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:55:35,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:55:35,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:55:35,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:55:35,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:55:35,747 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:55:35,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:55:35,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:55:35,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:55:35,759 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 17:55:35,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:55:35,782 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:55:35,783 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:55:35,784 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 17:55:35,836 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:55:35,836 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:55:35,841 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:55:35,841 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:55:35,842 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:55:35,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:55:35,842 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:55:35,842 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:55:35,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:55:35,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:55:35,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:55:35,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:55:35,844 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:55:35,845 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:55:35,845 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:55:35,845 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:55:35,845 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:55:35,846 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:55:35,846 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:55:35,846 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:55:35,846 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:55:35,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:55:35,847 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:55:35,847 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:55:35,847 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:55:35,847 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:55:35,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:55:35,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:55:35,848 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:55:35,848 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:55:36,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:55:36,272 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:55:36,275 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:55:36,277 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:55:36,277 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:55:36,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2020-10-23 17:55:36,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/685b10d31/d11c0d216a644bea8ada21d03813fceb/FLAGef6095be7 [2020-10-23 17:55:37,031 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:55:37,032 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1252b.c [2020-10-23 17:55:37,043 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/685b10d31/d11c0d216a644bea8ada21d03813fceb/FLAGef6095be7 [2020-10-23 17:55:37,365 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/685b10d31/d11c0d216a644bea8ada21d03813fceb [2020-10-23 17:55:37,371 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:55:37,379 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:55:37,383 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:37,384 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:55:37,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:55:37,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:37" (1/1) ... [2020-10-23 17:55:37,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ac49e40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:37, skipping insertion in model container [2020-10-23 17:55:37,394 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:37" (1/1) ... [2020-10-23 17:55:37,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:55:37,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:55:37,658 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:37,668 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:55:37,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:37,717 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:55:37,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:37 WrapperNode [2020-10-23 17:55:37,718 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:37,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:55:37,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:55:37,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:55:37,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:37" (1/1) ... [2020-10-23 17:55:37,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:37" (1/1) ... [2020-10-23 17:55:37,752 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:37" (1/1) ... [2020-10-23 17:55:37,753 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:37" (1/1) ... [2020-10-23 17:55:37,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:37" (1/1) ... [2020-10-23 17:55:37,784 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:37" (1/1) ... [2020-10-23 17:55:37,786 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:37" (1/1) ... [2020-10-23 17:55:37,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:55:37,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:55:37,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:55:37,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:55:37,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:37" (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 17:55:37,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:55:37,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:55:37,894 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:55:37,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-10-23 17:55:37,895 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-10-23 17:55:37,895 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-23 17:55:37,895 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:55:37,895 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:55:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:55:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:55:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:55:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-23 17:55:37,896 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-10-23 17:55:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 17:55:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:55:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:55:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-10-23 17:55:37,897 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-23 17:55:37,898 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:55:37,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:55:37,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:55:37,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:55:37,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:55:37,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 17:55:38,339 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:55:38,340 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-23 17:55:38,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:38 BoogieIcfgContainer [2020-10-23 17:55:38,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:55:38,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:55:38,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:55:38,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:55:38,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:55:37" (1/3) ... [2020-10-23 17:55:38,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b44905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:38, skipping insertion in model container [2020-10-23 17:55:38,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:37" (2/3) ... [2020-10-23 17:55:38,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33b44905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:38, skipping insertion in model container [2020-10-23 17:55:38,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:38" (3/3) ... [2020-10-23 17:55:38,353 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1252b.c [2020-10-23 17:55:38,370 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:55:38,376 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:55:38,391 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:55:38,423 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:55:38,423 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:55:38,424 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:55:38,424 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:55:38,424 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:55:38,424 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:55:38,425 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:55:38,425 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:55:38,452 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2020-10-23 17:55:38,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-23 17:55:38,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:55:38,469 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] [2020-10-23 17:55:38,470 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:55:38,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:55:38,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1163153451, now seen corresponding path program 1 times [2020-10-23 17:55:38,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:55:38,497 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423591648] [2020-10-23 17:55:38,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:55:38,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:38,928 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-10-23 17:55:38,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:55:38,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:39,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 17:55:39,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:39,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 17:55:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:39,029 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 17:55:39,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423591648] [2020-10-23 17:55:39,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:55:39,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 17:55:39,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768746624] [2020-10-23 17:55:39,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 17:55:39,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:55:39,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 17:55:39,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 17:55:39,055 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 4 states. [2020-10-23 17:55:39,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:55:39,310 INFO L93 Difference]: Finished difference Result 84 states and 113 transitions. [2020-10-23 17:55:39,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 17:55:39,312 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-23 17:55:39,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:55:39,322 INFO L225 Difference]: With dead ends: 84 [2020-10-23 17:55:39,322 INFO L226 Difference]: Without dead ends: 41 [2020-10-23 17:55:39,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 17:55:39,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-23 17:55:39,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-23 17:55:39,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-23 17:55:39,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-10-23 17:55:39,376 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 23 [2020-10-23 17:55:39,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:55:39,376 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-10-23 17:55:39,376 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 17:55:39,377 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-10-23 17:55:39,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-23 17:55:39,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:55:39,379 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 17:55:39,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:55:39,380 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:55:39,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:55:39,381 INFO L82 PathProgramCache]: Analyzing trace with hash 51245620, now seen corresponding path program 1 times [2020-10-23 17:55:39,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:55:39,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180331996] [2020-10-23 17:55:39,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:55:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:39,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:55:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:39,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 17:55:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:39,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-23 17:55:39,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:39,596 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 17:55:39,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180331996] [2020-10-23 17:55:39,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:55:39,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 17:55:39,597 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218647503] [2020-10-23 17:55:39,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 17:55:39,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:55:39,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 17:55:39,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 17:55:39,601 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2020-10-23 17:55:39,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:55:39,896 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-10-23 17:55:39,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 17:55:39,897 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-10-23 17:55:39,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:55:39,900 INFO L225 Difference]: With dead ends: 61 [2020-10-23 17:55:39,901 INFO L226 Difference]: Without dead ends: 45 [2020-10-23 17:55:39,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-23 17:55:39,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-23 17:55:39,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-23 17:55:39,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-23 17:55:39,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-23 17:55:39,918 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 24 [2020-10-23 17:55:39,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:55:39,918 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-23 17:55:39,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 17:55:39,918 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-23 17:55:39,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-23 17:55:39,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:55:39,920 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, 1, 1] [2020-10-23 17:55:39,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 17:55:39,921 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:55:39,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:55:39,921 INFO L82 PathProgramCache]: Analyzing trace with hash 1625087789, now seen corresponding path program 1 times [2020-10-23 17:55:39,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:55:39,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734870876] [2020-10-23 17:55:39,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:55:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:55:39,965 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:55:40,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:55:40,003 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:55:40,038 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 17:55:40,039 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 17:55:40,039 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 17:55:40,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:55:40 BoogieIcfgContainer [2020-10-23 17:55:40,082 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 17:55:40,084 INFO L168 Benchmark]: Toolchain (without parser) took 2710.20 ms. Allocated memory is still 151.0 MB. Free memory was 133.1 MB in the beginning and 75.0 MB in the end (delta: 58.1 MB). Peak memory consumption was 58.3 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:40,085 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:55:40,086 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.65 ms. Allocated memory is still 151.0 MB. Free memory was 132.5 MB in the beginning and 122.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:40,087 INFO L168 Benchmark]: Boogie Preprocessor took 82.00 ms. Allocated memory is still 151.0 MB. Free memory was 122.3 MB in the beginning and 134.6 MB in the end (delta: -12.3 MB). Peak memory consumption was 3.8 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:40,088 INFO L168 Benchmark]: RCFGBuilder took 540.96 ms. Allocated memory is still 151.0 MB. Free memory was 134.2 MB in the beginning and 114.5 MB in the end (delta: 19.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:40,089 INFO L168 Benchmark]: TraceAbstraction took 1737.64 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 75.0 MB in the end (delta: 39.2 MB). Peak memory consumption was 40.8 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:40,092 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory was 124.1 MB in the beginning and 123.9 MB in the end (delta: 136.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 334.65 ms. Allocated memory is still 151.0 MB. Free memory was 132.5 MB in the beginning and 122.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 82.00 ms. Allocated memory is still 151.0 MB. Free memory was 122.3 MB in the beginning and 134.6 MB in the end (delta: -12.3 MB). Peak memory consumption was 3.8 MB. Max. memory is 8.0 GB. * RCFGBuilder took 540.96 ms. Allocated memory is still 151.0 MB. Free memory was 134.2 MB in the beginning and 114.5 MB in the end (delta: 19.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1737.64 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 75.0 MB in the end (delta: 39.2 MB). Peak memory consumption was 40.8 MB. 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 86, overapproximation of someUnaryDOUBLEoperation at line 82. Possible FailurePath: [L81] double x = 0.0; [L82] double y = -0.0; VAL [x=0] [L83] CALL, EXPR fmax_double(x, y) VAL [\old(x)=0, \old(y)=4294967303] [L54] CALL, EXPR __fpclassify_double(x) VAL [\old(x)=0] [L26] __uint32_t msw, lsw; VAL [\old(x)=0, x=0] [L29] ieee_double_shape_type ew_u; [L30] ew_u.value = (x) [L31] EXPR ew_u.parts.msw [L31] (msw) = ew_u.parts.msw [L32] EXPR ew_u.parts.lsw [L32] (lsw) = ew_u.parts.lsw [L35-L36] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) VAL [\old(x)=0, lsw=4294967297, msw=2146435073, x=0] [L38-L39] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) VAL [\old(x)=0, lsw=4294967297, msw=2146435073, x=0] [L41-L42] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) VAL [\old(x)=0, lsw=4294967297, msw=2146435073, x=0] [L45-L46] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L49] return 0; VAL [\old(x)=0, \result=0, lsw=4294967297, msw=2146435073, x=0] [L54] RET, EXPR __fpclassify_double(x) VAL [\old(x)=0, \old(y)=4294967303, __fpclassify_double(x)=0, x=0, y=4294967303] [L54] COND TRUE __fpclassify_double(x) == 0 [L55] return y; VAL [\old(x)=0, \old(y)=4294967303, \result=4294967303, x=0, y=4294967303] [L83] RET, EXPR fmax_double(x, y) VAL [fmax_double(x, y)=4294967303, x=0, y=4294967303] [L83] double res = fmax_double(x, y); [L86] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=4294967303, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=4294967303] [L86] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L87] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1252b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 94 SDtfs, 20 SDslu, 146 SDs, 0 SdLazy, 113 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 3627 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...