/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:11:38,734 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:11:38,737 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:11:38,755 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:11:38,755 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:11:38,758 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:11:38,760 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:11:38,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:11:38,773 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:11:38,777 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:11:38,779 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:11:38,781 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:11:38,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:11:38,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:11:38,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:11:38,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:11:38,789 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:11:38,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:11:38,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:11:38,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:11:38,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:11:38,806 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:11:38,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:11:38,808 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:11:38,811 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 21:11:38,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:11:38,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:11:38,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:11:38,826 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 [2020-07-19 21:11:38,856 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:11:38,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:11:38,864 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:11:38,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:11:38,867 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:11:38,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:11:38,867 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:11:38,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:11:38,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:11:38,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:11:38,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:11:38,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:11:38,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:11:38,868 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:11:38,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:11:38,869 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:11:38,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:11:38,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:11:38,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:11:38,869 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:11:38,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:11:38,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:11:38,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:11:38,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:11:38,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:11:38,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:11:38,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:11:38,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:11:38,871 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:11:38,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 21:11:39,158 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:11:39,173 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:11:39,178 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:11:39,180 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:11:39,183 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:11:39,183 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-07-19 21:11:39,260 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e6878b54/5a5f66be8d3449548092c5872f336794/FLAG8debd887d [2020-07-19 21:11:39,742 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:11:39,743 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-07-19 21:11:39,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e6878b54/5a5f66be8d3449548092c5872f336794/FLAG8debd887d [2020-07-19 21:11:40,153 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e6878b54/5a5f66be8d3449548092c5872f336794 [2020-07-19 21:11:40,162 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:11:40,165 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:11:40,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:11:40,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:11:40,169 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:11:40,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:11:40" (1/1) ... [2020-07-19 21:11:40,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cebdff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:40, skipping insertion in model container [2020-07-19 21:11:40,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:11:40" (1/1) ... [2020-07-19 21:11:40,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:11:40,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:11:40,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:11:40,403 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:11:40,532 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:11:40,564 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:11:40,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:40 WrapperNode [2020-07-19 21:11:40,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:11:40,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:11:40,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:11:40,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:11:40,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:40" (1/1) ... [2020-07-19 21:11:40,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:40" (1/1) ... [2020-07-19 21:11:40,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:40" (1/1) ... [2020-07-19 21:11:40,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:40" (1/1) ... [2020-07-19 21:11:40,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:40" (1/1) ... [2020-07-19 21:11:40,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:40" (1/1) ... [2020-07-19 21:11:40,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:40" (1/1) ... [2020-07-19 21:11:40,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:11:40,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:11:40,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:11:40,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:11:40,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:40" (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 [2020-07-19 21:11:40,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:11:40,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:11:40,688 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-07-19 21:11:40,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-19 21:11:40,688 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:11:40,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:11:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-07-19 21:11:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 21:11:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-19 21:11:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 21:11:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 21:11:40,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 21:11:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-19 21:11:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-19 21:11:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:11:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:11:40,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:11:41,050 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:11:41,050 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-19 21:11:41,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:41 BoogieIcfgContainer [2020-07-19 21:11:41,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:11:41,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:11:41,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:11:41,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:11:41,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:11:40" (1/3) ... [2020-07-19 21:11:41,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bcb63d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:11:41, skipping insertion in model container [2020-07-19 21:11:41,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:11:40" (2/3) ... [2020-07-19 21:11:41,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6bcb63d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:11:41, skipping insertion in model container [2020-07-19 21:11:41,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:11:41" (3/3) ... [2020-07-19 21:11:41,063 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-07-19 21:11:41,083 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:11:41,092 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:11:41,106 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:11:41,133 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:11:41,133 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:11:41,133 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:11:41,134 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:11:41,134 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:11:41,134 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:11:41,134 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:11:41,134 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:11:41,154 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-07-19 21:11:41,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-19 21:11:41,162 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:11:41,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:11:41,164 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:11:41,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:11:41,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-07-19 21:11:41,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:11:41,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255560086] [2020-07-19 21:11:41,178 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@56ff1516 [2020-07-19 21:11:41,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:11:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:11:41,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:11:41,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:11:41,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255560086] [2020-07-19 21:11:41,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:11:41,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 21:11:41,399 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825983617] [2020-07-19 21:11:41,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 21:11:41,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:11:41,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 21:11:41,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 21:11:41,422 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-07-19 21:11:41,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:11:41,668 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-07-19 21:11:41,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 21:11:41,670 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-07-19 21:11:41,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:11:41,681 INFO L225 Difference]: With dead ends: 94 [2020-07-19 21:11:41,682 INFO L226 Difference]: Without dead ends: 47 [2020-07-19 21:11:41,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 21:11:41,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-07-19 21:11:41,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-07-19 21:11:41,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-19 21:11:41,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-07-19 21:11:41,733 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-07-19 21:11:41,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:11:41,734 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-07-19 21:11:41,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 21:11:41,734 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-07-19 21:11:41,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-19 21:11:41,735 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:11:41,735 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] [2020-07-19 21:11:41,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:11:41,736 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:11:41,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:11:41,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-07-19 21:11:41,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:11:41,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783480329] [2020-07-19 21:11:41,738 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@56ff1516 [2020-07-19 21:11:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:11:41,824 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:11:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 21:11:41,883 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 21:11:41,918 INFO L174 FreeRefinementEngine]: Strategy CAMEL_NO_AM found a feasible trace [2020-07-19 21:11:41,919 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 21:11:41,920 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 21:11:41,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:11:41 BoogieIcfgContainer [2020-07-19 21:11:41,959 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:11:41,962 INFO L168 Benchmark]: Toolchain (without parser) took 1796.83 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 105.0 MB in the beginning and 103.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 65.9 MB. Max. memory is 7.1 GB. [2020-07-19 21:11:41,963 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-19 21:11:41,964 INFO L168 Benchmark]: CACSL2BoogieTranslator took 399.22 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 104.6 MB in the beginning and 182.6 MB in the end (delta: -78.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-07-19 21:11:41,965 INFO L168 Benchmark]: Boogie Preprocessor took 58.33 ms. Allocated memory is still 204.5 MB. Free memory was 182.0 MB in the beginning and 180.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-07-19 21:11:41,966 INFO L168 Benchmark]: RCFGBuilder took 431.45 ms. Allocated memory is still 204.5 MB. Free memory was 180.1 MB in the beginning and 156.1 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-07-19 21:11:41,967 INFO L168 Benchmark]: TraceAbstraction took 902.16 ms. Allocated memory is still 204.5 MB. Free memory was 156.1 MB in the beginning and 103.0 MB in the end (delta: 53.1 MB). Peak memory consumption was 53.1 MB. Max. memory is 7.1 GB. [2020-07-19 21:11:41,971 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 399.22 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 104.6 MB in the beginning and 182.6 MB in the end (delta: -78.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.33 ms. Allocated memory is still 204.5 MB. Free memory was 182.0 MB in the beginning and 180.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 431.45 ms. Allocated memory is still 204.5 MB. Free memory was 180.1 MB in the beginning and 156.1 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 902.16 ms. Allocated memory is still 204.5 MB. Free memory was 156.1 MB in the beginning and 103.0 MB in the end (delta: 53.1 MB). Peak memory consumption was 53.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 103]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of someUnaryDOUBLEoperation at line 98, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 102. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; VAL [\old(huge_floor)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L98] double x = -0.0; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L99] CALL, EXPR floor_double(x) VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007] [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-1, i1=0, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007] [L26] COND TRUE j0 < 20 VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-1, i1=0, j0=0, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007] [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-1, i1=0, j0=0, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007] [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, \result=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-1, i1=0, j0=0, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007] [L99] RET, EXPR floor_double(x) VAL [floor_double(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007] [L99] double res = floor_double(x); [L102] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, res == -0.0 && __signbit_double(res) == 1=0, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007] [L102] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L103] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 55 SDslu, 5 SDs, 0 SdLazy, 65 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 756 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...