/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:54:46,062 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:54:46,065 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:54:46,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:54:46,090 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:54:46,091 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:54:46,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:54:46,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:54:46,096 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:54:46,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:54:46,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:54:46,100 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:54:46,100 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:54:46,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:54:46,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:54:46,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:54:46,104 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:54:46,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:54:46,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:54:46,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:54:46,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:54:46,112 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:54:46,113 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:54:46,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:54:46,117 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:54:46,117 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:54:46,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:54:46,118 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:54:46,118 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:54:46,119 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-19 01:54:46,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:54:46,127 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:54:46,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:54:46,129 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 [2020-08-19 01:54:46,181 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:54:46,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:54:46,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:54:46,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:54:46,183 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:54:46,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:54:46,183 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:54:46,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:54:46,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:54:46,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:54:46,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:54:46,187 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:54:46,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:54:46,187 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:54:46,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:54:46,187 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:54:46,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:54:46,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:54:46,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:54:46,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:54:46,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:54:46,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:54:46,192 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:54:46,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:54:46,192 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:54:46,193 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:54:46,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:54:46,193 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:54:46,193 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:54:46,193 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=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 01:54:46,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:54:46,564 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:54:46,567 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:54:46,570 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:54:46,571 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:54:46,571 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-19 01:54:46,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fca69af8e/ab0d98e4a9e5417bb26de16e0041b895/FLAG78c730424 [2020-08-19 01:54:47,145 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:54:47,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-08-19 01:54:47,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fca69af8e/ab0d98e4a9e5417bb26de16e0041b895/FLAG78c730424 [2020-08-19 01:54:47,529 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fca69af8e/ab0d98e4a9e5417bb26de16e0041b895 [2020-08-19 01:54:47,539 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:54:47,541 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:54:47,543 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:54:47,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:54:47,546 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:54:47,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:54:47" (1/1) ... [2020-08-19 01:54:47,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44406637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:47, skipping insertion in model container [2020-08-19 01:54:47,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:54:47" (1/1) ... [2020-08-19 01:54:47,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:54:47,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:54:47,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:54:47,778 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:54:47,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:54:47,920 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:54:47,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:47 WrapperNode [2020-08-19 01:54:47,921 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:54:47,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:54:47,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:54:47,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:54:47,933 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:47" (1/1) ... [2020-08-19 01:54:47,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:47" (1/1) ... [2020-08-19 01:54:47,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:47" (1/1) ... [2020-08-19 01:54:47,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:47" (1/1) ... [2020-08-19 01:54:47,955 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:47" (1/1) ... [2020-08-19 01:54:47,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:47" (1/1) ... [2020-08-19 01:54:47,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:47" (1/1) ... [2020-08-19 01:54:47,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:54:47,968 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:54:47,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:54:47,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:54:47,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:47" (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 [2020-08-19 01:54:48,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:54:48,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:54:48,033 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-19 01:54:48,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-19 01:54:48,033 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:54:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:54:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-19 01:54:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-19 01:54:48,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:54:48,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 01:54:48,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:54:48,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:54:48,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:54:48,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 01:54:48,035 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:54:48,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:54:48,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:54:48,436 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:54:48,437 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-19 01:54:48,441 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:54:48 BoogieIcfgContainer [2020-08-19 01:54:48,441 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:54:48,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:54:48,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:54:48,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:54:48,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:54:47" (1/3) ... [2020-08-19 01:54:48,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c376f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:54:48, skipping insertion in model container [2020-08-19 01:54:48,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:47" (2/3) ... [2020-08-19 01:54:48,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c376f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:54:48, skipping insertion in model container [2020-08-19 01:54:48,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:54:48" (3/3) ... [2020-08-19 01:54:48,450 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-08-19 01:54:48,460 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:54:48,468 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:54:48,488 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:54:48,514 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:54:48,514 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:54:48,515 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:54:48,515 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:54:48,515 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:54:48,515 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:54:48,516 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:54:48,516 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:54:48,544 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-08-19 01:54:48,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 01:54:48,551 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:54:48,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:54:48,553 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:54:48,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:54:48,560 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-08-19 01:54:48,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:54:48,570 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754053143] [2020-08-19 01:54:48,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:54:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:48,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:48,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:54:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:48,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:54:48,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754053143] [2020-08-19 01:54:48,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:54:48,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:54:48,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601543981] [2020-08-19 01:54:48,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:54:48,811 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:54:48,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:54:48,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:54:48,824 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-08-19 01:54:49,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:54:49,050 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-08-19 01:54:49,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 01:54:49,052 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2020-08-19 01:54:49,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:54:49,064 INFO L225 Difference]: With dead ends: 76 [2020-08-19 01:54:49,065 INFO L226 Difference]: Without dead ends: 38 [2020-08-19 01:54:49,071 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 [2020-08-19 01:54:49,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-19 01:54:49,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-19 01:54:49,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-19 01:54:49,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-08-19 01:54:49,135 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-08-19 01:54:49,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:54:49,136 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-08-19 01:54:49,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:54:49,137 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-08-19 01:54:49,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 01:54:49,139 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:54:49,139 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:54:49,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:54:49,141 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:54:49,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:54:49,141 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-08-19 01:54:49,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:54:49,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586310467] [2020-08-19 01:54:49,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:54:49,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 01:54:49,256 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 01:54:49,257 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 01:54:49,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:54:49,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:54:49 BoogieIcfgContainer [2020-08-19 01:54:49,278 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:54:49,281 INFO L168 Benchmark]: Toolchain (without parser) took 1739.47 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.6 MB in the beginning and 111.0 MB in the end (delta: -8.4 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2020-08-19 01:54:49,283 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 01:54:49,284 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.78 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.2 MB in the beginning and 181.1 MB in the end (delta: -78.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-08-19 01:54:49,285 INFO L168 Benchmark]: Boogie Preprocessor took 46.04 ms. Allocated memory is still 202.9 MB. Free memory was 181.1 MB in the beginning and 178.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-19 01:54:49,285 INFO L168 Benchmark]: RCFGBuilder took 473.23 ms. Allocated memory is still 202.9 MB. Free memory was 178.8 MB in the beginning and 156.3 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-19 01:54:49,286 INFO L168 Benchmark]: TraceAbstraction took 836.12 ms. Allocated memory is still 202.9 MB. Free memory was 156.3 MB in the beginning and 111.0 MB in the end (delta: 45.4 MB). Peak memory consumption was 45.4 MB. Max. memory is 7.1 GB. [2020-08-19 01:54:49,291 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 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 378.78 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.2 MB in the beginning and 181.1 MB in the end (delta: -78.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.04 ms. Allocated memory is still 202.9 MB. Free memory was 181.1 MB in the beginning and 178.8 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 473.23 ms. Allocated memory is still 202.9 MB. Free memory was 178.8 MB in the beginning and 156.3 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 836.12 ms. Allocated memory is still 202.9 MB. Free memory was 156.3 MB in the beginning and 111.0 MB in the end (delta: 45.4 MB). Peak memory consumption was 45.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 96]: 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 someUnaryDOUBLEoperation at line 91, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 95. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; [L91] double x = -0.0; [L92] 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; [L92] RET, EXPR ceil_double(x) [L92] double res = ceil_double(x); [L95] COND TRUE res != x [L96] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 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: 52 SDtfs, 47 SDslu, 5 SDs, 0 SdLazy, 55 SolverSat, 7 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=42occurred 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, 37 NumberOfCodeBlocks, 37 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 697 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...