/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.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1011b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:01:14,806 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:01:14,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:01:14,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:01:14,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:01:14,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:01:14,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:01:14,839 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:01:14,841 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:01:14,842 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:01:14,845 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:01:14,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:01:14,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:01:14,853 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:01:14,854 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:01:14,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:01:14,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:01:14,859 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:01:14,864 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:01:14,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:01:14,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:01:14,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:01:14,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:01:14,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:01:14,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 23:01:14,894 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:01:14,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:01:14,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:01:14,896 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 23:01:14,910 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:01:14,911 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:01:14,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:01:14,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:01:14,913 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:01:14,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:01:14,913 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:01:14,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:01:14,914 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:01:14,914 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:01:14,914 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:01:14,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:01:14,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:01:14,915 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:01:14,915 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:01:14,915 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:01:14,915 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:01:14,916 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:01:14,916 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:01:14,916 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:01:14,916 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:01:14,916 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:01:14,917 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:01:14,917 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:01:14,917 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:01:14,917 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:01:14,917 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:01:14,918 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:01:14,918 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:01:14,918 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-19 23:01:15,230 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:01:15,243 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:01:15,247 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:01:15,249 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:01:15,249 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:01:15,250 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1011b.c [2020-07-19 23:01:15,313 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0c077efb/8bb1601538e7451e8e95f6d26faf92b4/FLAG267ac0a0d [2020-07-19 23:01:15,754 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:01:15,755 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1011b.c [2020-07-19 23:01:15,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0c077efb/8bb1601538e7451e8e95f6d26faf92b4/FLAG267ac0a0d [2020-07-19 23:01:16,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a0c077efb/8bb1601538e7451e8e95f6d26faf92b4 [2020-07-19 23:01:16,095 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:01:16,098 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:01:16,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:01:16,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:01:16,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:01:16,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:01:16" (1/1) ... [2020-07-19 23:01:16,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@170325f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:01:16, skipping insertion in model container [2020-07-19 23:01:16,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:01:16" (1/1) ... [2020-07-19 23:01:16,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:01:16,132 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:01:16,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:01:16,380 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:01:16,419 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:01:16,443 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:01:16,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:01:16 WrapperNode [2020-07-19 23:01:16,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:01:16,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:01:16,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:01:16,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:01:16,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:01:16" (1/1) ... [2020-07-19 23:01:16,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:01:16" (1/1) ... [2020-07-19 23:01:16,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:01:16" (1/1) ... [2020-07-19 23:01:16,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:01:16" (1/1) ... [2020-07-19 23:01:16,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:01:16" (1/1) ... [2020-07-19 23:01:16,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:01:16" (1/1) ... [2020-07-19 23:01:16,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:01:16" (1/1) ... [2020-07-19 23:01:16,622 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:01:16,623 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:01:16,623 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:01:16,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:01:16,624 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:01:16" (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 23:01:16,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:01:16,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:01:16,683 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-19 23:01:16,683 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-07-19 23:01:16,683 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:01:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:01:16,684 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-19 23:01:16,684 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 23:01:16,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-19 23:01:16,685 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 23:01:16,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 23:01:16,686 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-07-19 23:01:16,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 23:01:16,686 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-19 23:01:16,686 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:01:16,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:01:16,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:01:17,011 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:01:17,011 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-19 23:01:17,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:01:17 BoogieIcfgContainer [2020-07-19 23:01:17,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:01:17,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:01:17,017 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:01:17,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:01:17,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:01:16" (1/3) ... [2020-07-19 23:01:17,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c4665b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:01:17, skipping insertion in model container [2020-07-19 23:01:17,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:01:16" (2/3) ... [2020-07-19 23:01:17,022 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57c4665b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:01:17, skipping insertion in model container [2020-07-19 23:01:17,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:01:17" (3/3) ... [2020-07-19 23:01:17,024 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1011b.c [2020-07-19 23:01:17,034 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:01:17,043 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:01:17,058 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:01:17,081 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:01:17,081 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:01:17,081 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:01:17,081 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:01:17,082 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:01:17,082 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:01:17,082 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:01:17,082 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:01:17,099 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-07-19 23:01:17,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-19 23:01:17,105 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:01:17,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:01:17,106 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:01:17,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:01:17,111 INFO L82 PathProgramCache]: Analyzing trace with hash -2010282984, now seen corresponding path program 1 times [2020-07-19 23:01:17,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:01:17,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207722809] [2020-07-19 23:01:17,120 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3d37a9d3 [2020-07-19 23:01:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:01:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:01:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:01:17,328 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 23:01:17,329 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207722809] [2020-07-19 23:01:17,330 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:01:17,331 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 23:01:17,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709404274] [2020-07-19 23:01:17,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 23:01:17,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:01:17,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 23:01:17,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 23:01:17,355 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 4 states. [2020-07-19 23:01:17,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:01:17,525 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-07-19 23:01:17,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 23:01:17,527 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-07-19 23:01:17,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:01:17,536 INFO L225 Difference]: With dead ends: 56 [2020-07-19 23:01:17,536 INFO L226 Difference]: Without dead ends: 28 [2020-07-19 23:01:17,540 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 23:01:17,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-19 23:01:17,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-07-19 23:01:17,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-19 23:01:17,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-07-19 23:01:17,586 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 17 [2020-07-19 23:01:17,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:01:17,587 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-07-19 23:01:17,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 23:01:17,587 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-07-19 23:01:17,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-19 23:01:17,588 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:01:17,589 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 23:01:17,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:01:17,589 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:01:17,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:01:17,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1410255941, now seen corresponding path program 1 times [2020-07-19 23:01:17,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:01:17,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54552522] [2020-07-19 23:01:17,591 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3d37a9d3 [2020-07-19 23:01:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 23:01:17,643 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 23:01:17,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 23:01:17,675 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 23:01:17,709 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-19 23:01:17,709 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 23:01:17,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 23:01:17,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 11:01:17 BoogieIcfgContainer [2020-07-19 23:01:17,736 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 23:01:17,739 INFO L168 Benchmark]: Toolchain (without parser) took 1641.33 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 104.0 MB in the beginning and 123.4 MB in the end (delta: -19.5 MB). Peak memory consumption was 38.7 MB. Max. memory is 7.1 GB. [2020-07-19 23:01:17,740 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-19 23:01:17,742 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.31 ms. Allocated memory is still 146.3 MB. Free memory was 103.7 MB in the beginning and 93.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-19 23:01:17,743 INFO L168 Benchmark]: Boogie Preprocessor took 176.47 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 93.1 MB in the beginning and 181.9 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-19 23:01:17,744 INFO L168 Benchmark]: RCFGBuilder took 392.75 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 163.9 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-07-19 23:01:17,745 INFO L168 Benchmark]: TraceAbstraction took 720.00 ms. Allocated memory is still 204.5 MB. Free memory was 163.3 MB in the beginning and 123.4 MB in the end (delta: 39.9 MB). Peak memory consumption was 39.9 MB. Max. memory is 7.1 GB. [2020-07-19 23:01:17,749 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 146.3 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 346.31 ms. Allocated memory is still 146.3 MB. Free memory was 103.7 MB in the beginning and 93.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 176.47 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 93.1 MB in the beginning and 181.9 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 392.75 ms. Allocated memory is still 204.5 MB. Free memory was 181.9 MB in the beginning and 163.9 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 720.00 ms. Allocated memory is still 204.5 MB. Free memory was 163.3 MB in the beginning and 123.4 MB in the end (delta: 39.9 MB). Peak memory consumption was 39.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 52]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 51, overapproximation of someUnaryDOUBLEoperation at line 47, overapproximation of bitwiseAnd at line 35. Possible FailurePath: [L47] double x = -0.0; [L48] CALL, EXPR fabs_double(x) VAL [\old(x)=16] [L26] __uint32_t high; VAL [\old(x)=16, x=16] [L28] ieee_double_shape_type gh_u; [L29] gh_u.value = (x) [L30] EXPR gh_u.parts.msw [L30] (high) = gh_u.parts.msw [L33] ieee_double_shape_type sh_u; [L34] sh_u.value = (x) [L35] sh_u.parts.msw = (high & 0x7fffffff) [L36] EXPR sh_u.value [L36] (x) = sh_u.value [L38] return x; VAL [\old(x)=16, \result=16, high=22, x=16] [L48] RET, EXPR fabs_double(x) VAL [fabs_double(x)=16, x=16] [L48] double res = fabs_double(x); [L51] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=16, res == 0.0 && __signbit_double(res) == 0=0, x=16] [L51] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L52] __VERIFIER_error() VAL [res=16, x=16] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 21 SDslu, 5 SDs, 0 SdLazy, 31 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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=32occurred 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, 0.1s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 592 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...