/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:53:51,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:53:51,213 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:53:51,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:53:51,257 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:53:51,265 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:53:51,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:53:51,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:53:51,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:53:51,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:53:51,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:53:51,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:53:51,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:53:51,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:53:51,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:53:51,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:53:51,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:53:51,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:53:51,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:53:51,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:53:51,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:53:51,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:53:51,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:53:51,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:53:51,318 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 14:53:51,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:53:51,336 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:53:51,337 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:53:51,338 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 [2020-09-24 14:53:51,363 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:53:51,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:53:51,365 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:53:51,365 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:53:51,365 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:53:51,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:53:51,366 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:53:51,366 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:53:51,366 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:53:51,366 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:53:51,366 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:53:51,367 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:53:51,367 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:53:51,367 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:53:51,367 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:53:51,367 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:53:51,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:53:51,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:53:51,368 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:53:51,368 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:53:51,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:53:51,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:53:51,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:53:51,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:53:51,369 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:53:51,369 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:53:51,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:53:51,370 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:53:51,370 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:53:51,370 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:53:51,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:53:52,001 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:53:52,005 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:53:52,007 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:53:52,008 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:53:52,011 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-09-24 14:53:52,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adc582c5b/a3dd699878a14d83b103db5e20ccf11b/FLAG0247a0574 [2020-09-24 14:53:52,705 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:53:52,705 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-09-24 14:53:52,728 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adc582c5b/a3dd699878a14d83b103db5e20ccf11b/FLAG0247a0574 [2020-09-24 14:53:52,997 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adc582c5b/a3dd699878a14d83b103db5e20ccf11b [2020-09-24 14:53:53,009 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:53:53,015 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:53:53,016 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:53:53,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:53:53,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:53:53,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:53:52" (1/1) ... [2020-09-24 14:53:53,028 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f9cb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:53, skipping insertion in model container [2020-09-24 14:53:53,028 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:53:52" (1/1) ... [2020-09-24 14:53:53,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:53:53,071 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:53:53,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:53:53,363 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:53:53,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:53:53,543 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:53:53,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:53 WrapperNode [2020-09-24 14:53:53,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:53:53,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:53:53,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:53:53,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:53:53,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:53" (1/1) ... [2020-09-24 14:53:53,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:53" (1/1) ... [2020-09-24 14:53:53,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:53" (1/1) ... [2020-09-24 14:53:53,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:53" (1/1) ... [2020-09-24 14:53:53,596 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:53" (1/1) ... [2020-09-24 14:53:53,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:53" (1/1) ... [2020-09-24 14:53:53,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:53" (1/1) ... [2020-09-24 14:53:53,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:53:53,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:53:53,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:53:53,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:53:53,620 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:53" (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 [2020-09-24 14:53:53,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:53:53,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:53:53,694 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-24 14:53:53,695 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-09-24 14:53:53,695 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-09-24 14:53:53,695 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:53:53,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:53:53,695 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-24 14:53:53,696 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-24 14:53:53,696 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-09-24 14:53:53,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:53:53,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 14:53:53,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:53:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:53:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 14:53:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:53:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-09-24 14:53:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:53:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:53:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-24 14:53:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:53:54,416 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:53:54,417 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-24 14:53:54,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:53:54 BoogieIcfgContainer [2020-09-24 14:53:54,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:53:54,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:53:54,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:53:54,431 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:53:54,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:53:52" (1/3) ... [2020-09-24 14:53:54,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527107d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:53:54, skipping insertion in model container [2020-09-24 14:53:54,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:53" (2/3) ... [2020-09-24 14:53:54,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@527107d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:53:54, skipping insertion in model container [2020-09-24 14:53:54,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:53:54" (3/3) ... [2020-09-24 14:53:54,437 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-09-24 14:53:54,450 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:53:54,469 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:53:54,493 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:53:54,542 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:53:54,542 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:53:54,542 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:53:54,542 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:53:54,542 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:53:54,542 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:53:54,543 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:53:54,543 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:53:54,567 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2020-09-24 14:53:54,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 14:53:54,577 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:53:54,578 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:53:54,579 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:53:54,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:53:54,585 INFO L82 PathProgramCache]: Analyzing trace with hash 1076720203, now seen corresponding path program 1 times [2020-09-24 14:53:54,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:53:54,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083094177] [2020-09-24 14:53:54,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:53:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:54,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:53:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:54,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 14:53:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:54,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 14:53:54,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:54,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:53:54,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083094177] [2020-09-24 14:53:54,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:53:54,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:53:54,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971233961] [2020-09-24 14:53:54,904 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:53:54,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:53:54,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:53:54,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:53:54,926 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2020-09-24 14:53:55,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:53:55,517 INFO L93 Difference]: Finished difference Result 414 states and 503 transitions. [2020-09-24 14:53:55,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 14:53:55,520 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-24 14:53:55,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:53:55,536 INFO L225 Difference]: With dead ends: 414 [2020-09-24 14:53:55,536 INFO L226 Difference]: Without dead ends: 209 [2020-09-24 14:53:55,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 14:53:55,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-09-24 14:53:55,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2020-09-24 14:53:55,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-09-24 14:53:55,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 235 transitions. [2020-09-24 14:53:55,611 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 235 transitions. Word has length 51 [2020-09-24 14:53:55,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:53:55,612 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 235 transitions. [2020-09-24 14:53:55,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:53:55,612 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 235 transitions. [2020-09-24 14:53:55,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-24 14:53:55,616 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:53:55,616 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:53:55,616 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:53:55,617 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:53:55,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:53:55,617 INFO L82 PathProgramCache]: Analyzing trace with hash -484158952, now seen corresponding path program 1 times [2020-09-24 14:53:55,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:53:55,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612902364] [2020-09-24 14:53:55,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:53:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 14:53:55,782 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 14:53:55,783 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 14:53:55,789 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:53:55,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:53:55 BoogieIcfgContainer [2020-09-24 14:53:55,814 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:53:55,818 INFO L168 Benchmark]: Toolchain (without parser) took 2805.40 ms. Allocated memory was 148.4 MB in the beginning and 235.4 MB in the end (delta: 87.0 MB). Free memory was 103.5 MB in the beginning and 143.0 MB in the end (delta: -39.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. [2020-09-24 14:53:55,819 INFO L168 Benchmark]: CDTParser took 0.51 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 14:53:55,820 INFO L168 Benchmark]: CACSL2BoogieTranslator took 527.81 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 102.9 MB in the beginning and 179.8 MB in the end (delta: -76.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-09-24 14:53:55,821 INFO L168 Benchmark]: Boogie Preprocessor took 73.28 ms. Allocated memory is still 204.5 MB. Free memory was 179.8 MB in the beginning and 177.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-24 14:53:55,822 INFO L168 Benchmark]: RCFGBuilder took 806.66 ms. Allocated memory is still 204.5 MB. Free memory was 177.2 MB in the beginning and 129.5 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. [2020-09-24 14:53:55,823 INFO L168 Benchmark]: TraceAbstraction took 1388.73 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 128.9 MB in the beginning and 143.0 MB in the end (delta: -14.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-09-24 14:53:55,827 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.51 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 527.81 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 102.9 MB in the beginning and 179.8 MB in the end (delta: -76.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.28 ms. Allocated memory is still 204.5 MB. Free memory was 179.8 MB in the beginning and 177.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 806.66 ms. Allocated memory is still 204.5 MB. Free memory was 177.2 MB in the beginning and 129.5 MB in the end (delta: 47.6 MB). Peak memory consumption was 47.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1388.73 ms. Allocated memory was 204.5 MB in the beginning and 235.4 MB in the end (delta: 30.9 MB). Free memory was 128.9 MB in the beginning and 143.0 MB in the end (delta: -14.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L183] CALL isfinite_double(x) [L164] __int32_t hx; [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L183] RET isfinite_double(x) [L183] COND TRUE isfinite_double(x) [L185] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L185] RET, EXPR fmod_double(x, y) [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x [L189] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 220 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 239 SDtfs, 37 SDslu, 182 SDs, 0 SdLazy, 260 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=216occurred 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, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 4750 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...