/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=SMALLEST -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 17:01:59,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 17:01:59,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 17:01:59,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 17:01:59,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 17:01:59,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 17:01:59,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 17:01:59,875 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 17:01:59,877 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 17:01:59,879 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 17:01:59,880 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 17:01:59,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 17:01:59,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 17:01:59,888 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 17:01:59,891 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 17:01:59,892 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 17:01:59,894 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 17:01:59,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 17:01:59,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 17:01:59,905 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 17:01:59,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 17:01:59,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 17:01:59,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 17:01:59,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 17:01:59,916 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 17:01:59,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 17:01:59,916 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 17:01:59,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 17:01:59,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 17:01:59,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-18 17:01:59,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 17:01:59,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 17:01:59,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 17:01:59,931 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 17:01:59,980 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 17:01:59,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 17:01:59,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 17:01:59,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 17:01:59,983 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 17:01:59,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 17:01:59,983 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 17:01:59,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 17:01:59,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 17:01:59,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 17:01:59,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 17:01:59,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 17:01:59,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 17:01:59,986 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 17:01:59,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 17:01:59,986 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 17:01:59,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 17:01:59,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 17:01:59,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 17:01:59,987 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 17:01:59,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 17:01:59,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 17:01:59,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 17:01:59,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 17:01:59,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 17:01:59,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 17:01:59,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 17:01:59,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 17:01:59,988 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 17:01:59,989 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=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 17:02:00,287 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 17:02:00,300 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 17:02:00,303 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 17:02:00,305 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 17:02:00,305 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 17:02:00,306 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-18 17:02:00,383 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b765e8f63/c5df4cb9f6e648279ff436e93a071f75/FLAG174c953c9 [2020-08-18 17:02:00,911 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 17:02:00,914 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-08-18 17:02:00,923 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b765e8f63/c5df4cb9f6e648279ff436e93a071f75/FLAG174c953c9 [2020-08-18 17:02:01,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b765e8f63/c5df4cb9f6e648279ff436e93a071f75 [2020-08-18 17:02:01,264 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 17:02:01,266 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 17:02:01,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 17:02:01,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 17:02:01,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 17:02:01,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:02:01" (1/1) ... [2020-08-18 17:02:01,273 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a35e781 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:01, skipping insertion in model container [2020-08-18 17:02:01,273 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 05:02:01" (1/1) ... [2020-08-18 17:02:01,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 17:02:01,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 17:02:01,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:02:01,488 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 17:02:01,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 17:02:01,636 INFO L208 MainTranslator]: Completed translation [2020-08-18 17:02:01,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:01 WrapperNode [2020-08-18 17:02:01,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 17:02:01,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 17:02:01,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 17:02:01,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 17:02:01,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:01" (1/1) ... [2020-08-18 17:02:01,654 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:01" (1/1) ... [2020-08-18 17:02:01,679 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:01" (1/1) ... [2020-08-18 17:02:01,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:01" (1/1) ... [2020-08-18 17:02:01,706 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:01" (1/1) ... [2020-08-18 17:02:01,714 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:01" (1/1) ... [2020-08-18 17:02:01,715 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:01" (1/1) ... [2020-08-18 17:02:01,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 17:02:01,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 17:02:01,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 17:02:01,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 17:02:01,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:01" (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 17:02:01,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 17:02:01,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 17:02:01,782 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 17:02:01,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-08-18 17:02:01,783 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 17:02:01,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 17:02:01,783 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 17:02:01,783 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-08-18 17:02:01,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 17:02:01,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 17:02:01,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 17:02:01,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 17:02:01,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 17:02:01,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 17:02:01,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 17:02:01,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 17:02:01,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 17:02:02,112 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 17:02:02,112 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 17:02:02,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:02:02 BoogieIcfgContainer [2020-08-18 17:02:02,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 17:02:02,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 17:02:02,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 17:02:02,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 17:02:02,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 05:02:01" (1/3) ... [2020-08-18 17:02:02,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38381abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:02:02, skipping insertion in model container [2020-08-18 17:02:02,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 05:02:01" (2/3) ... [2020-08-18 17:02:02,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38381abc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 05:02:02, skipping insertion in model container [2020-08-18 17:02:02,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 05:02:02" (3/3) ... [2020-08-18 17:02:02,129 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-08-18 17:02:02,142 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 17:02:02,151 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 17:02:02,168 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 17:02:02,204 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 17:02:02,205 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 17:02:02,205 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 17:02:02,205 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 17:02:02,205 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 17:02:02,206 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 17:02:02,206 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 17:02:02,206 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 17:02:02,228 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-08-18 17:02:02,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 17:02:02,236 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:02:02,237 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 17:02:02,238 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:02:02,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:02:02,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1881433434, now seen corresponding path program 1 times [2020-08-18 17:02:02,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:02:02,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1542380319] [2020-08-18 17:02:02,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:02:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:02,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 17:02:02,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:02,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 17:02:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:02,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-18 17:02:02,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 17:02:02,486 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 17:02:02,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1542380319] [2020-08-18 17:02:02,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 17:02:02,489 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 17:02:02,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595890283] [2020-08-18 17:02:02,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 17:02:02,496 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 17:02:02,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 17:02:02,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 17:02:02,516 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2020-08-18 17:02:02,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 17:02:02,766 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-08-18 17:02:02,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 17:02:02,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-18 17:02:02,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 17:02:02,781 INFO L225 Difference]: With dead ends: 86 [2020-08-18 17:02:02,781 INFO L226 Difference]: Without dead ends: 43 [2020-08-18 17:02:02,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 17:02:02,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-18 17:02:02,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-08-18 17:02:02,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-18 17:02:02,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-08-18 17:02:02,832 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-08-18 17:02:02,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 17:02:02,833 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-08-18 17:02:02,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 17:02:02,833 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-08-18 17:02:02,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 17:02:02,835 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 17:02:02,835 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 17:02:02,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 17:02:02,836 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 17:02:02,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 17:02:02,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1135906069, now seen corresponding path program 1 times [2020-08-18 17:02:02,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 17:02:02,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803010868] [2020-08-18 17:02:02,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 17:02:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 17:02:02,901 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 17:02:02,901 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 17:02:02,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 17:02:02,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 05:02:02 BoogieIcfgContainer [2020-08-18 17:02:02,951 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 17:02:02,954 INFO L168 Benchmark]: Toolchain (without parser) took 1687.03 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.1 MB in the beginning and 109.6 MB in the end (delta: -7.5 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. [2020-08-18 17:02:02,955 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 17:02:02,956 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.40 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.9 MB in the beginning and 182.0 MB in the end (delta: -80.0 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-08-18 17:02:02,957 INFO L168 Benchmark]: Boogie Preprocessor took 86.98 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 179.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-18 17:02:02,958 INFO L168 Benchmark]: RCFGBuilder took 393.92 ms. Allocated memory is still 203.9 MB. Free memory was 179.4 MB in the beginning and 157.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-08-18 17:02:02,959 INFO L168 Benchmark]: TraceAbstraction took 830.59 ms. Allocated memory is still 203.9 MB. Free memory was 157.0 MB in the beginning and 109.6 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. [2020-08-18 17:02:02,964 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 370.40 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.9 MB in the beginning and 182.0 MB in the end (delta: -80.0 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 86.98 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 179.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 393.92 ms. Allocated memory is still 203.9 MB. Free memory was 179.4 MB in the beginning and 157.6 MB in the end (delta: 21.8 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 830.59 ms. Allocated memory is still 203.9 MB. Free memory was 157.0 MB in the beginning and 109.6 MB in the end (delta: 47.4 MB). Peak memory consumption was 47.4 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: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, 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, 0.0s 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...