/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 FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 12:53:48,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:53:48,524 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:53:48,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:53:48,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:53:48,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:53:48,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:53:48,577 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:53:48,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:53:48,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:53:48,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:53:48,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:53:48,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:53:48,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:53:48,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:53:48,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:53:48,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:53:48,594 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:53:48,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:53:48,600 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:53:48,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:53:48,606 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:53:48,607 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:53:48,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:53:48,609 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 12:53:48,617 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:53:48,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:53:48,618 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:53:48,619 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 12:53:48,641 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:53:48,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:53:48,643 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:53:48,643 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:53:48,643 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:53:48,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:53:48,644 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 12:53:48,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:53:48,644 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 12:53:48,644 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:53:48,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:53:48,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:53:48,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:53:48,645 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 12:53:48,645 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:53:48,646 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:53:48,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:53:48,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:53:48,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:53:48,646 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:53:48,646 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:53:48,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:53:48,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:53:48,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:53:48,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:53:48,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:53:48,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:53:48,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:53:48,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:53:48,648 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=BIGGEST; [2020-08-18 12:53:48,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:53:48,986 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:53:48,994 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:53:49,000 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:53:49,000 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:53:49,001 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-18 12:53:49,073 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b63b34dcf/4ec2fac8ba1945c69c0d1f8d463a1fd2/FLAG58f4860f4 [2020-08-18 12:53:49,522 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:53:49,524 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-18 12:53:49,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b63b34dcf/4ec2fac8ba1945c69c0d1f8d463a1fd2/FLAG58f4860f4 [2020-08-18 12:53:49,829 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b63b34dcf/4ec2fac8ba1945c69c0d1f8d463a1fd2 [2020-08-18 12:53:49,836 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:53:49,838 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:53:49,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:53:49,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:53:49,842 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:53:49,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:53:49" (1/1) ... [2020-08-18 12:53:49,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e399bb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:53:49, skipping insertion in model container [2020-08-18 12:53:49,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:53:49" (1/1) ... [2020-08-18 12:53:49,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:53:49,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:53:50,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:53:50,063 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:53:50,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:53:50,192 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:53:50,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:53:50 WrapperNode [2020-08-18 12:53:50,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:53:50,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:53:50,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:53:50,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:53:50,208 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:53:50" (1/1) ... [2020-08-18 12:53:50,209 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:53:50" (1/1) ... [2020-08-18 12:53:50,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:53:50" (1/1) ... [2020-08-18 12:53:50,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:53:50" (1/1) ... [2020-08-18 12:53:50,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:53:50" (1/1) ... [2020-08-18 12:53:50,248 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:53:50" (1/1) ... [2020-08-18 12:53:50,250 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:53:50" (1/1) ... [2020-08-18 12:53:50,253 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:53:50,253 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:53:50,253 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:53:50,254 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:53:50,254 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:53:50" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-18 12:53:50,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:53:50,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:53:50,314 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 12:53:50,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-18 12:53:50,314 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:53:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:53:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 12:53:50,314 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-18 12:53:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 12:53:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 12:53:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 12:53:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 12:53:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 12:53:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 12:53:50,315 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:53:50,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:53:50,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:53:50,732 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:53:50,732 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 12:53:50,736 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:53:50 BoogieIcfgContainer [2020-08-18 12:53:50,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:53:50,738 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:53:50,738 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:53:50,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:53:50,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:53:49" (1/3) ... [2020-08-18 12:53:50,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6971aea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:53:50, skipping insertion in model container [2020-08-18 12:53:50,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:53:50" (2/3) ... [2020-08-18 12:53:50,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6971aea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:53:50, skipping insertion in model container [2020-08-18 12:53:50,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:53:50" (3/3) ... [2020-08-18 12:53:50,745 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-08-18 12:53:50,755 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:53:50,762 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 12:53:50,776 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 12:53:50,801 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:53:50,801 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:53:50,801 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:53:50,802 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:53:50,802 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:53:50,802 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:53:50,802 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:53:50,802 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:53:50,820 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-18 12:53:50,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 12:53:50,826 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:53:50,827 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:53:50,828 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:53:50,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:53:50,833 INFO L82 PathProgramCache]: Analyzing trace with hash 1881433434, now seen corresponding path program 1 times [2020-08-18 12:53:50,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:53:50,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774428164] [2020-08-18 12:53:50,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:53:50,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:53:51,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:53:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:53:51,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 12:53:51,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:53:51,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 12:53:51,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:53:51,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:53:51,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774428164] [2020-08-18 12:53:51,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:53:51,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 12:53:51,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334448795] [2020-08-18 12:53:51,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 12:53:51,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:53:51,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 12:53:51,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:53:51,179 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-18 12:53:51,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:53:51,489 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-18 12:53:51,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 12:53:51,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-18 12:53:51,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:53:51,505 INFO L225 Difference]: With dead ends: 86 [2020-08-18 12:53:51,505 INFO L226 Difference]: Without dead ends: 43 [2020-08-18 12:53:51,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:53:51,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-18 12:53:51,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-18 12:53:51,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-18 12:53:51,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-18 12:53:51,550 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-18 12:53:51,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:53:51,551 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-18 12:53:51,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 12:53:51,551 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-18 12:53:51,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 12:53:51,553 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:53:51,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:53:51,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:53:51,554 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:53:51,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:53:51,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1135906069, now seen corresponding path program 1 times [2020-08-18 12:53:51,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:53:51,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941054173] [2020-08-18 12:53:51,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:53:51,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 12:53:51,606 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 12:53:51,606 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 12:53:51,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:53:51,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 12:53:51 BoogieIcfgContainer [2020-08-18 12:53:51,632 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 12:53:51,635 INFO L168 Benchmark]: Toolchain (without parser) took 1795.91 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 102.1 MB in the beginning and 107.1 MB in the end (delta: -5.0 MB). Peak memory consumption was 57.9 MB. Max. memory is 7.1 GB. [2020-08-18 12:53:51,636 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 12:53:51,637 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.15 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 180.1 MB in the end (delta: -78.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-08-18 12:53:51,638 INFO L168 Benchmark]: Boogie Preprocessor took 58.97 ms. Allocated memory is still 201.3 MB. Free memory was 180.1 MB in the beginning and 177.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-18 12:53:51,639 INFO L168 Benchmark]: RCFGBuilder took 483.68 ms. Allocated memory is still 201.3 MB. Free memory was 177.4 MB in the beginning and 155.0 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-18 12:53:51,640 INFO L168 Benchmark]: TraceAbstraction took 893.78 ms. Allocated memory is still 201.3 MB. Free memory was 154.3 MB in the beginning and 107.1 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 7.1 GB. [2020-08-18 12:53:51,644 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 355.15 ms. Allocated memory was 138.4 MB in the beginning and 201.3 MB in the end (delta: 62.9 MB). Free memory was 101.9 MB in the beginning and 180.1 MB in the end (delta: -78.2 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.97 ms. Allocated memory is still 201.3 MB. Free memory was 180.1 MB in the beginning and 177.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 483.68 ms. Allocated memory is still 201.3 MB. Free memory was 177.4 MB in the beginning and 155.0 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 893.78 ms. Allocated memory is still 201.3 MB. Free memory was 154.3 MB in the beginning and 107.1 MB in the end (delta: 47.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 95]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 41, overapproximation of bitwiseOr at line 42, overapproximation of someBinaryArithmeticDOUBLEoperation at line 90, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L90] double x = 0.0 / 0.0; [L91] CALL, EXPR ceil_double(x) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L29] COND TRUE j0 < 20 [L30] COND FALSE !(j0 < 0) [L41] i = (0x000fffff) >> j0 [L42] COND TRUE ((i0 & i) | i1) == 0 [L43] return x; [L91] RET, EXPR ceil_double(x) [L91] double res = ceil_double(x); [L94] CALL, EXPR isnan_double(res) [L15] return x != x; [L94] RET, EXPR isnan_double(res) [L94] COND TRUE !isnan_double(res) [L95] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 52 SDslu, 5 SDs, 0 SdLazy, 58 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred 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, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1012 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...