/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:46:19,428 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:46:19,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:46:19,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:46:19,490 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:46:19,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:46:19,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:46:19,505 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:46:19,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:46:19,515 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:46:19,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:46:19,518 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 03:46:19,518 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:46:19,522 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:46:19,524 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:46:19,525 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:46:19,526 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:46:19,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:46:19,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:46:19,544 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:46:19,546 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:46:19,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:46:19,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:46:19,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:46:19,563 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 03:46:19,576 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:46:19,577 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:46:19,578 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:46:19,579 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:46:19,632 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:46:19,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:46:19,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:46:19,637 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:46:19,637 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:46:19,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:46:19,638 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:46:19,638 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:46:19,638 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:46:19,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:46:19,640 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:46:19,640 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:46:19,640 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:46:19,641 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:46:19,641 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:46:19,641 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:46:19,641 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:46:19,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:46:19,642 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:46:19,642 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:46:19,642 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:46:19,643 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:46:19,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:46:19,643 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:46:19,643 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:46:19,643 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:46:20,004 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:46:20,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:46:20,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:46:20,043 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:46:20,043 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:46:20,044 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2020-12-22 03:46:20,127 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/393f2a9e2/3ac516f051e74b98901f9b94ac7c3d83/FLAG5a6dd6c04 [2020-12-22 03:46:20,802 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:46:20,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c [2020-12-22 03:46:20,813 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/393f2a9e2/3ac516f051e74b98901f9b94ac7c3d83/FLAG5a6dd6c04 [2020-12-22 03:46:21,101 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/393f2a9e2/3ac516f051e74b98901f9b94ac7c3d83 [2020-12-22 03:46:21,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:46:21,107 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:46:21,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:21,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:46:21,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:46:21,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:21" (1/1) ... [2020-12-22 03:46:21,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30a26111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:21, skipping insertion in model container [2020-12-22 03:46:21,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:21" (1/1) ... [2020-12-22 03:46:21,127 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:46:21,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:46:21,402 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c[4119,4132] [2020-12-22 03:46:21,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:21,414 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:46:21,484 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1131b.c[4119,4132] [2020-12-22 03:46:21,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:21,502 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:46:21,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:21 WrapperNode [2020-12-22 03:46:21,503 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:21,504 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:21,505 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:46:21,505 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:46:21,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:21" (1/1) ... [2020-12-22 03:46:21,526 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:21" (1/1) ... [2020-12-22 03:46:21,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:21,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:46:21,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:46:21,564 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:46:21,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:21" (1/1) ... [2020-12-22 03:46:21,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:21" (1/1) ... [2020-12-22 03:46:21,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:21" (1/1) ... [2020-12-22 03:46:21,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:21" (1/1) ... [2020-12-22 03:46:21,614 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:21" (1/1) ... [2020-12-22 03:46:21,631 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:21" (1/1) ... [2020-12-22 03:46:21,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:21" (1/1) ... [2020-12-22 03:46:21,648 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:46:21,649 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:46:21,650 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:46:21,650 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:46:21,651 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:21" (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 [2020-12-22 03:46:21,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:46:21,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:46:21,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 03:46:21,752 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-22 03:46:21,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-22 03:46:21,753 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:46:21,753 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:46:21,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:46:21,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-12-22 03:46:21,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:46:22,450 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:46:22,453 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2020-12-22 03:46:22,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:22 BoogieIcfgContainer [2020-12-22 03:46:22,455 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:46:22,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:46:22,457 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:46:22,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:46:22,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:46:21" (1/3) ... [2020-12-22 03:46:22,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251005e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:22, skipping insertion in model container [2020-12-22 03:46:22,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:21" (2/3) ... [2020-12-22 03:46:22,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@251005e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:22, skipping insertion in model container [2020-12-22 03:46:22,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:22" (3/3) ... [2020-12-22 03:46:22,465 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-12-22 03:46:22,474 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:46:22,480 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:46:22,502 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:46:22,547 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:46:22,547 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:46:22,547 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:46:22,547 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:46:22,547 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:46:22,548 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:46:22,548 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:46:22,548 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:46:22,569 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-12-22 03:46:22,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 03:46:22,577 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:22,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:22,579 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:22,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:22,585 INFO L82 PathProgramCache]: Analyzing trace with hash 2036387893, now seen corresponding path program 1 times [2020-12-22 03:46:22,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:22,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417127164] [2020-12-22 03:46:22,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:22,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:22,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:46:22,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417127164] [2020-12-22 03:46:22,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:22,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:46:22,763 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788553290] [2020-12-22 03:46:22,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:46:22,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:22,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:46:22,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:46:22,785 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2020-12-22 03:46:22,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:22,812 INFO L93 Difference]: Finished difference Result 118 states and 206 transitions. [2020-12-22 03:46:22,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:46:22,813 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-22 03:46:22,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:22,824 INFO L225 Difference]: With dead ends: 118 [2020-12-22 03:46:22,825 INFO L226 Difference]: Without dead ends: 56 [2020-12-22 03:46:22,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:46:22,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-22 03:46:22,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-12-22 03:46:22,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-22 03:46:22,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 82 transitions. [2020-12-22 03:46:22,874 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 82 transitions. Word has length 13 [2020-12-22 03:46:22,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:22,874 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 82 transitions. [2020-12-22 03:46:22,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:46:22,874 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 82 transitions. [2020-12-22 03:46:22,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-22 03:46:22,875 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:22,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:22,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:46:22,876 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:22,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:22,877 INFO L82 PathProgramCache]: Analyzing trace with hash -794890891, now seen corresponding path program 1 times [2020-12-22 03:46:22,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:22,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123767847] [2020-12-22 03:46:22,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:22,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:22,978 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:23,100 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:23,155 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:46:23,155 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:46:23,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:46:23,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:46:23 BoogieIcfgContainer [2020-12-22 03:46:23,230 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:46:23,232 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:46:23,232 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:46:23,232 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:46:23,233 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:22" (3/4) ... [2020-12-22 03:46:23,238 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:46:23,239 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:46:23,243 INFO L168 Benchmark]: Toolchain (without parser) took 2133.61 ms. Allocated memory is still 153.1 MB. Free memory was 128.1 MB in the beginning and 84.8 MB in the end (delta: 43.3 MB). Peak memory consumption was 43.8 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:23,245 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 153.1 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:23,248 INFO L168 Benchmark]: CACSL2BoogieTranslator took 393.76 ms. Allocated memory is still 153.1 MB. Free memory was 128.0 MB in the beginning and 114.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:23,249 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.13 ms. Allocated memory is still 153.1 MB. Free memory was 114.8 MB in the beginning and 112.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:23,250 INFO L168 Benchmark]: Boogie Preprocessor took 85.28 ms. Allocated memory is still 153.1 MB. Free memory was 112.4 MB in the beginning and 110.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:23,252 INFO L168 Benchmark]: RCFGBuilder took 805.41 ms. Allocated memory is still 153.1 MB. Free memory was 110.3 MB in the beginning and 115.2 MB in the end (delta: -4.9 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:23,253 INFO L168 Benchmark]: TraceAbstraction took 773.63 ms. Allocated memory is still 153.1 MB. Free memory was 114.7 MB in the beginning and 85.3 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:23,256 INFO L168 Benchmark]: Witness Printer took 7.03 ms. Allocated memory is still 153.1 MB. Free memory was 85.3 MB in the beginning and 84.8 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:23,271 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 153.1 MB. Free memory is still 125.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 393.76 ms. Allocated memory is still 153.1 MB. Free memory was 128.0 MB in the beginning and 114.9 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 58.13 ms. Allocated memory is still 153.1 MB. Free memory was 114.8 MB in the beginning and 112.4 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 85.28 ms. Allocated memory is still 153.1 MB. Free memory was 112.4 MB in the beginning and 110.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 805.41 ms. Allocated memory is still 153.1 MB. Free memory was 110.3 MB in the beginning and 115.2 MB in the end (delta: -4.9 MB). Peak memory consumption was 16.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 773.63 ms. Allocated memory is still 153.1 MB. Free memory was 114.7 MB in the beginning and 85.3 MB in the end (delta: 29.4 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. * Witness Printer took 7.03 ms. Allocated memory is still 153.1 MB. Free memory was 85.3 MB in the beginning and 84.8 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 188]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 43, overapproximation of someUnaryDOUBLEoperation at line 19, overapproximation of someBinaryArithmeticDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 38, overapproximation of someBinaryDOUBLEComparisonOperation at line 187, overapproximation of bitwiseXor at line 39. Possible FailurePath: [L17-L20] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L179] double y = -1.0 / 0.0; [L180] double x = __VERIFIER_nondet_double(); [L163] __int32_t hx; VAL [one_fmod=1, Zero_fmod={9:0}] [L165] ieee_double_shape_type gh_u; [L166] gh_u.value = (x) [L167] EXPR gh_u.parts.msw [L167] (hx) = gh_u.parts.msw [L169] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [one_fmod=1, Zero_fmod={9:0}] [L182] COND TRUE isfinite_double(x) [L23] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L24] __uint32_t lx, ly, lz; VAL [one_fmod=1, Zero_fmod={9:0}] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (hx) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lx) = ew_u.parts.lsw [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (y) [L35] EXPR ew_u.parts.msw [L35] (hy) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (ly) = ew_u.parts.lsw [L38] sx = hx & 0x80000000 [L39] hx ^= sx [L40] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L42-L43] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L44] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L184] double res = fmod_double(x, y); [L187] COND TRUE res != x VAL [one_fmod=1, Zero_fmod={9:0}] [L188] reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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, 0.0s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 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...