/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_0730a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:54:59,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:54:59,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:54:59,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:54:59,338 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:54:59,341 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:54:59,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:54:59,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:54:59,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:54:59,364 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:54:59,365 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:54:59,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:54:59,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:54:59,370 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:54:59,372 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:54:59,374 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:54:59,375 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:54:59,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:54:59,386 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:54:59,393 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:54:59,396 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:54:59,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:54:59,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:54:59,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:54:59,408 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 17:54:59,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:54:59,443 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:54:59,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:54:59,445 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 17:54:59,483 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:54:59,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:54:59,486 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:54:59,486 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:54:59,486 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:54:59,487 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:54:59,487 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:54:59,487 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:54:59,487 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:54:59,488 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:54:59,488 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:54:59,489 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:54:59,489 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:54:59,490 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:54:59,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:54:59,490 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:54:59,490 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:54:59,490 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:54:59,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:54:59,491 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:54:59,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:54:59,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:54:59,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:54:59,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:54:59,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:54:59,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:54:59,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:54:59,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:54:59,493 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:54:59,494 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:54:59,913 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:54:59,948 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:54:59,953 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:54:59,955 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:54:59,955 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:54:59,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730a.c [2020-10-23 17:55:00,041 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab1ff1cbe/380d57746e4f44469987b0fdfa073e25/FLAG12745d068 [2020-10-23 17:55:00,651 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:55:00,652 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0730a.c [2020-10-23 17:55:00,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab1ff1cbe/380d57746e4f44469987b0fdfa073e25/FLAG12745d068 [2020-10-23 17:55:01,013 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ab1ff1cbe/380d57746e4f44469987b0fdfa073e25 [2020-10-23 17:55:01,017 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:55:01,025 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:55:01,030 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:01,030 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:55:01,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:55:01,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:01" (1/1) ... [2020-10-23 17:55:01,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@dc501ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:01, skipping insertion in model container [2020-10-23 17:55:01,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:55:01" (1/1) ... [2020-10-23 17:55:01,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:55:01,102 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:55:01,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:01,393 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:55:01,443 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:55:01,469 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:55:01,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:01 WrapperNode [2020-10-23 17:55:01,472 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:55:01,474 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:55:01,474 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:55:01,475 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:55:01,489 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:01" (1/1) ... [2020-10-23 17:55:01,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:01" (1/1) ... [2020-10-23 17:55:01,521 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:01" (1/1) ... [2020-10-23 17:55:01,521 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:01" (1/1) ... [2020-10-23 17:55:01,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:01" (1/1) ... [2020-10-23 17:55:01,571 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:01" (1/1) ... [2020-10-23 17:55:01,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:01" (1/1) ... [2020-10-23 17:55:01,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:55:01,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:55:01,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:55:01,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:55:01,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:01" (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 17:55:01,668 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:55:01,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:55:01,669 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:55:01,669 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-23 17:55:01,669 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2020-10-23 17:55:01,670 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-10-23 17:55:01,670 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:55:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:55:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:55:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:55:01,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:55:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-23 17:55:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-23 17:55:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2020-10-23 17:55:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 17:55:01,671 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:55:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:55:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:55:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 17:55:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-10-23 17:55:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:55:01,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:55:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:55:01,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:55:02,374 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:55:02,374 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-23 17:55:02,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:02 BoogieIcfgContainer [2020-10-23 17:55:02,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:55:02,378 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:55:02,378 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:55:02,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:55:02,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:55:01" (1/3) ... [2020-10-23 17:55:02,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c5525c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:02, skipping insertion in model container [2020-10-23 17:55:02,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:55:01" (2/3) ... [2020-10-23 17:55:02,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c5525c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:55:02, skipping insertion in model container [2020-10-23 17:55:02,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:55:02" (3/3) ... [2020-10-23 17:55:02,385 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730a.c [2020-10-23 17:55:02,397 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:55:02,402 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:55:02,416 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:55:02,443 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:55:02,443 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:55:02,444 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:55:02,444 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:55:02,444 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:55:02,444 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:55:02,444 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:55:02,445 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:55:02,463 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2020-10-23 17:55:02,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-23 17:55:02,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:55:02,471 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 17:55:02,471 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:55:02,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:55:02,478 INFO L82 PathProgramCache]: Analyzing trace with hash 51235529, now seen corresponding path program 1 times [2020-10-23 17:55:02,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:55:02,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105093205] [2020-10-23 17:55:02,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:55:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:02,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:55:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:02,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 17:55:02,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:02,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 17:55:02,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:55:02,767 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 17:55:02,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105093205] [2020-10-23 17:55:02,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:55:02,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 17:55:02,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876688139] [2020-10-23 17:55:02,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 17:55:02,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:55:02,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 17:55:02,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 17:55:02,792 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 4 states. [2020-10-23 17:55:03,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:55:03,095 INFO L93 Difference]: Finished difference Result 127 states and 189 transitions. [2020-10-23 17:55:03,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 17:55:03,097 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-23 17:55:03,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:55:03,108 INFO L225 Difference]: With dead ends: 127 [2020-10-23 17:55:03,108 INFO L226 Difference]: Without dead ends: 62 [2020-10-23 17:55:03,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 17:55:03,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-23 17:55:03,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-23 17:55:03,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-23 17:55:03,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 81 transitions. [2020-10-23 17:55:03,164 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 81 transitions. Word has length 23 [2020-10-23 17:55:03,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:55:03,164 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 81 transitions. [2020-10-23 17:55:03,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 17:55:03,165 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 81 transitions. [2020-10-23 17:55:03,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-23 17:55:03,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:55:03,167 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 17:55:03,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:55:03,167 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:55:03,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:55:03,168 INFO L82 PathProgramCache]: Analyzing trace with hash -964270738, now seen corresponding path program 1 times [2020-10-23 17:55:03,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:55:03,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543256363] [2020-10-23 17:55:03,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:55:03,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:55:03,292 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:55:03,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:55:03,431 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:55:03,465 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 17:55:03,466 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 17:55:03,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 17:55:03,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:55:03 BoogieIcfgContainer [2020-10-23 17:55:03,503 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 17:55:03,506 INFO L168 Benchmark]: Toolchain (without parser) took 2484.94 ms. Allocated memory is still 160.4 MB. Free memory was 134.9 MB in the beginning and 68.4 MB in the end (delta: 66.5 MB). Peak memory consumption was 67.6 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:03,507 INFO L168 Benchmark]: CDTParser took 1.27 ms. Allocated memory is still 160.4 MB. Free memory is still 134.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:55:03,507 INFO L168 Benchmark]: CACSL2BoogieTranslator took 442.98 ms. Allocated memory is still 160.4 MB. Free memory was 134.3 MB in the beginning and 121.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:03,508 INFO L168 Benchmark]: Boogie Preprocessor took 113.57 ms. Allocated memory is still 160.4 MB. Free memory was 121.9 MB in the beginning and 119.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:03,509 INFO L168 Benchmark]: RCFGBuilder took 787.89 ms. Allocated memory is still 160.4 MB. Free memory was 119.6 MB in the beginning and 135.5 MB in the end (delta: -15.9 MB). Peak memory consumption was 27.7 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:03,510 INFO L168 Benchmark]: TraceAbstraction took 1125.11 ms. Allocated memory is still 160.4 MB. Free memory was 135.0 MB in the beginning and 68.4 MB in the end (delta: 66.6 MB). Peak memory consumption was 67.1 MB. Max. memory is 8.0 GB. [2020-10-23 17:55:03,514 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.27 ms. Allocated memory is still 160.4 MB. Free memory is still 134.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 442.98 ms. Allocated memory is still 160.4 MB. Free memory was 134.3 MB in the beginning and 121.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 113.57 ms. Allocated memory is still 160.4 MB. Free memory was 121.9 MB in the beginning and 119.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 787.89 ms. Allocated memory is still 160.4 MB. Free memory was 119.6 MB in the beginning and 135.5 MB in the end (delta: -15.9 MB). Peak memory consumption was 27.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1125.11 ms. Allocated memory is still 160.4 MB. Free memory was 135.0 MB in the beginning and 68.4 MB in the end (delta: 66.6 MB). Peak memory consumption was 67.1 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 bitwiseOr at line 144, overapproximation of someBinaryArithmeticDOUBLEoperation at line 38, overapproximation of bitwiseAnd at line 143. Possible FailurePath: [L22] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [\old(one_sqrt)=8589934594, \old(tiny_sqrt)=8589934605, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L157] double x = 1.0 / 0.0; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L158] CALL, EXPR __ieee754_sqrt(x) VAL [\old(x)=8589934596, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L25] double z; [L26] __int32_t sign = 0x80000000; [L27] __uint32_t r, t1, s1, ix1, q1; [L28] __int32_t ix0, s0, q, m, t, i; VAL [\old(x)=8589934596, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=8589934596] [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (x) [L33] EXPR ew_u.parts.msw [L33] (ix0) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ix1) = ew_u.parts.lsw [L37] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L38] return x * x + x; VAL [\old(x)=8589934596, ix0=-2, ix1=8589934608, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=8589934596] [L158] RET, EXPR __ieee754_sqrt(x) VAL [__ieee754_sqrt(x)=8589934606, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=8589934596] [L158] double res = __ieee754_sqrt(x); [L161] CALL, EXPR isinf_double(res) VAL [\old(x)=8589934606, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L136] __int32_t hx, lx; VAL [\old(x)=8589934606, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=8589934606] [L138] ieee_double_shape_type ew_u; [L139] ew_u.value = (x) [L140] EXPR ew_u.parts.msw [L140] (hx) = ew_u.parts.msw [L141] EXPR ew_u.parts.lsw [L141] (lx) = ew_u.parts.lsw [L143] hx &= 0x7fffffff [L144] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L145] hx = 0x7ff00000 - hx [L146] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [\old(x)=8589934606, \result=0, hx=2146435073, lx=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=8589934606] [L161] RET, EXPR isinf_double(res) VAL [isinf_double(res)=0, one_sqrt=1, res=8589934606, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=8589934596] [L161] COND TRUE !isinf_double(res) [L162] CALL reach_error() VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L3] __assert_fail("0", "double_req_bl_0730a.c", 3, "reach_error") VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 72 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: 82 SDtfs, 8 SDslu, 75 SDs, 0 SdLazy, 80 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred 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, 0.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1804 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...