/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_1011a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:45:58,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:45:58,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:45:58,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:45:58,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:45:58,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:45:58,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:45:58,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:45:58,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:45:58,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:45:58,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:45:58,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 03:45:58,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:45:58,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:45:58,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:45:58,721 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:45:58,735 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:45:58,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:45:58,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:45:58,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:45:58,753 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:45:58,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:45:58,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:45:58,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:45:58,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 03:45:58,784 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:45:58,785 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:45:58,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:45:58,788 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:45:58,815 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:45:58,815 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:45:58,817 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:45:58,817 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:45:58,817 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:45:58,818 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:45:58,818 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:45:58,818 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:45:58,818 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:45:58,819 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:45:58,819 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:45:58,819 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:45:58,819 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:45:58,820 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:45:58,820 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:45:58,820 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:45:58,820 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:45:58,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:45:58,821 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:45:58,821 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:45:58,821 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:45:58,821 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:45:58,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:45:58,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:45:58,822 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:45:58,822 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:45:59,240 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:45:59,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:45:59,278 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:45:59,280 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:45:59,280 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:45:59,281 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1011a.c [2020-12-22 03:45:59,362 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09be633ee/9919d3a75a5e4f2fb8ce8a4404dd6647/FLAGdae9a30d0 [2020-12-22 03:45:59,969 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:45:59,969 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1011a.c [2020-12-22 03:45:59,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09be633ee/9919d3a75a5e4f2fb8ce8a4404dd6647/FLAGdae9a30d0 [2020-12-22 03:46:00,345 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/09be633ee/9919d3a75a5e4f2fb8ce8a4404dd6647 [2020-12-22 03:46:00,348 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:46:00,350 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:46:00,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:00,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:46:00,356 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:46:00,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:00" (1/1) ... [2020-12-22 03:46:00,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a7bbd58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:00, skipping insertion in model container [2020-12-22 03:46:00,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:00" (1/1) ... [2020-12-22 03:46:00,367 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:46:00,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:46:00,554 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_1011a.c[1210,1223] [2020-12-22 03:46:00,558 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:00,567 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:46:00,591 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_1011a.c[1210,1223] [2020-12-22 03:46:00,592 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:00,610 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:46:00,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:00 WrapperNode [2020-12-22 03:46:00,611 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:00,612 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:00,612 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:46:00,612 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:46:00,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:00" (1/1) ... [2020-12-22 03:46:00,630 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:00" (1/1) ... [2020-12-22 03:46:00,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:00,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:46:00,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:46:00,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:46:00,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:00" (1/1) ... [2020-12-22 03:46:00,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:00" (1/1) ... [2020-12-22 03:46:00,667 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:00" (1/1) ... [2020-12-22 03:46:00,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:00" (1/1) ... [2020-12-22 03:46:00,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:00" (1/1) ... [2020-12-22 03:46:00,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:00" (1/1) ... [2020-12-22 03:46:00,689 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:00" (1/1) ... [2020-12-22 03:46:00,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:46:00,697 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:46:00,697 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:46:00,697 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:46:00,698 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:00" (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 03:46:00,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:46:00,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:46:00,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-22 03:46:00,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 03:46:00,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-22 03:46:00,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:46:00,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:46:00,807 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:46:00,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:46:01,209 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:46:01,210 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-22 03:46:01,214 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:01 BoogieIcfgContainer [2020-12-22 03:46:01,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:46:01,218 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:46:01,218 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:46:01,227 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:46:01,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:46:00" (1/3) ... [2020-12-22 03:46:01,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316a7536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:01, skipping insertion in model container [2020-12-22 03:46:01,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:00" (2/3) ... [2020-12-22 03:46:01,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316a7536 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:01, skipping insertion in model container [2020-12-22 03:46:01,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:01" (3/3) ... [2020-12-22 03:46:01,238 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1011a.c [2020-12-22 03:46:01,254 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:46:01,266 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:46:01,319 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:46:01,379 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:46:01,380 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:46:01,380 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:46:01,380 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:46:01,380 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:46:01,380 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:46:01,380 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:46:01,380 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:46:01,400 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-12-22 03:46:01,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 03:46:01,407 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:01,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:01,408 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:01,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:01,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1641221055, now seen corresponding path program 1 times [2020-12-22 03:46:01,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:01,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792937239] [2020-12-22 03:46:01,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:01,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:01,595 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 03:46:01,596 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792937239] [2020-12-22 03:46:01,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:01,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:46:01,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298500317] [2020-12-22 03:46:01,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:46:01,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:01,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:46:01,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:46:01,623 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-12-22 03:46:01,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:01,643 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2020-12-22 03:46:01,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:46:01,644 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-22 03:46:01,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:01,654 INFO L225 Difference]: With dead ends: 36 [2020-12-22 03:46:01,654 INFO L226 Difference]: Without dead ends: 16 [2020-12-22 03:46:01,657 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 03:46:01,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-22 03:46:01,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-22 03:46:01,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-22 03:46:01,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-12-22 03:46:01,693 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2020-12-22 03:46:01,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:01,693 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-12-22 03:46:01,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:46:01,693 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-12-22 03:46:01,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 03:46:01,694 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:01,694 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:01,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:46:01,695 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:01,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:01,696 INFO L82 PathProgramCache]: Analyzing trace with hash 558264036, now seen corresponding path program 1 times [2020-12-22 03:46:01,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:01,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820716742] [2020-12-22 03:46:01,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:01,739 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:01,794 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:01,844 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:46:01,844 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:46:01,845 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:46:01,894 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:46:01 BoogieIcfgContainer [2020-12-22 03:46:01,894 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:46:01,895 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:46:01,895 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:46:01,896 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:46:01,896 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:01" (3/4) ... [2020-12-22 03:46:01,902 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:46:01,902 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:46:01,906 INFO L168 Benchmark]: Toolchain (without parser) took 1553.53 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 108.6 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:01,909 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:01,911 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.02 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 116.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:01,912 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.79 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 114.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:01,914 INFO L168 Benchmark]: Boogie Preprocessor took 39.16 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 113.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:01,915 INFO L168 Benchmark]: RCFGBuilder took 517.33 ms. Allocated memory is still 151.0 MB. Free memory was 113.3 MB in the beginning and 130.6 MB in the end (delta: -17.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:01,917 INFO L168 Benchmark]: TraceAbstraction took 676.44 ms. Allocated memory is still 151.0 MB. Free memory was 130.1 MB in the beginning and 108.6 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:01,917 INFO L168 Benchmark]: Witness Printer took 6.95 ms. Allocated memory is still 151.0 MB. Free memory is still 108.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:01,936 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 is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 259.02 ms. Allocated memory is still 151.0 MB. Free memory was 126.3 MB in the beginning and 116.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 41.79 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 114.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.16 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 113.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 517.33 ms. Allocated memory is still 151.0 MB. Free memory was 113.3 MB in the beginning and 130.6 MB in the end (delta: -17.3 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 676.44 ms. Allocated memory is still 151.0 MB. Free memory was 130.1 MB in the beginning and 108.6 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Witness Printer took 6.95 ms. Allocated memory is still 151.0 MB. Free memory is still 108.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 54]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 53, overapproximation of bitwiseAnd at line 37. Possible FailurePath: [L49] double x = 0.0; [L28] __uint32_t high; [L30] ieee_double_shape_type gh_u; [L31] gh_u.value = (x) [L32] EXPR gh_u.parts.msw [L32] (high) = gh_u.parts.msw [L35] ieee_double_shape_type sh_u; [L36] sh_u.value = (x) [L37] sh_u.parts.msw = (high & 0x7fffffff) [L38] EXPR sh_u.value [L38] (x) = sh_u.value [L40] return x; [L50] double res = fabs_double(x); [L53] EXPR res == 0.0 && __signbit_double(res) == 0 [L53] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L54] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 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=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 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...