/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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:53:51,350 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:53:51,354 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:53:51,387 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:53:51,387 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:53:51,396 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:53:51,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:53:51,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:53:51,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:53:51,410 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:53:51,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:53:51,413 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:53:51,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:53:51,416 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:53:51,419 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:53:51,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:53:51,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:53:51,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:53:51,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:53:51,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:53:51,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:53:51,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:53:51,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:53:51,444 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:53:51,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 14:53:51,456 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 14:53:51,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 14:53:51,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 14:53:51,458 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 14:53:51,461 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-09-24 14:53:51,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:53:51,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:53:51,470 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:53:51,471 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 14:53:51,525 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:53:51,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:53:51,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:53:51,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:53:51,528 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:53:51,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:53:51,529 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:53:51,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:53:51,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:53:51,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:53:51,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:53:51,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:53:51,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:53:51,532 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:53:51,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:53:51,533 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:53:51,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:53:51,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:53:51,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:53:51,535 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:53:51,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:53:51,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:53:51,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:53:51,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:53:51,539 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:53:51,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:53:51,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:53:51,540 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:53:51,540 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:53:51,540 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 14:53:52,157 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:53:52,180 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:53:52,188 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:53:52,190 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:53:52,190 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:53:52,192 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-09-24 14:53:52,283 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1475676cc/be654bf309e0486a87ea8edb311194e9/FLAGe611f3b08 [2020-09-24 14:53:52,872 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:53:52,873 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-09-24 14:53:52,883 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1475676cc/be654bf309e0486a87ea8edb311194e9/FLAGe611f3b08 [2020-09-24 14:53:53,195 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1475676cc/be654bf309e0486a87ea8edb311194e9 [2020-09-24 14:53:53,210 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:53:53,216 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:53:53,217 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:53:53,217 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:53:53,222 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:53:53,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:53:53" (1/1) ... [2020-09-24 14:53:53,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@514343ca 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 14:53:53,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:53:53" (1/1) ... [2020-09-24 14:53:53,237 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:53:53,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:53:53,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:53:53,580 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:53:53,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:53:53,758 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:53:53,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:53 WrapperNode [2020-09-24 14:53:53,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:53:53,759 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:53:53,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:53:53,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:53:53,774 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 14:53:53,775 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 14:53:53,790 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 14:53:53,790 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 14:53:53,819 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 14:53:53,832 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 14:53:53,836 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 14:53:53,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:53:53,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:53:53,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:53:53,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:53:53,843 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 14:53:53,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:53:53,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:53:53,916 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-09-24 14:53:53,916 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-09-24 14:53:53,916 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:53:53,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:53:53,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-24 14:53:53,917 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-09-24 14:53:53,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:53:53,918 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 14:53:53,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:53:53,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:53:53,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 14:53:53,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:53:53,920 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-09-24 14:53:53,921 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:53:53,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:53:53,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-24 14:53:53,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:53:54,641 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:53:54,642 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-24 14:53:54,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:53:54 BoogieIcfgContainer [2020-09-24 14:53:54,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:53:54,651 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:53:54,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:53:54,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:53:54,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:53:53" (1/3) ... [2020-09-24 14:53:54,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e2f80 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 14:53:54,657 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 14:53:54,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59e2f80 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 14:53:54,658 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 14:53:54,660 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-09-24 14:53:54,673 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:53:54,685 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:53:54,710 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:53:54,746 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:53:54,746 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:53:54,746 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:53:54,747 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:53:54,747 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:53:54,747 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:53:54,747 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:53:54,747 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:53:54,777 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2020-09-24 14:53:54,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 14:53:54,790 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:53:54,792 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 14:53:54,792 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:53:54,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:53:54,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1577177176, now seen corresponding path program 1 times [2020-09-24 14:53:54,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:53:54,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364121861] [2020-09-24 14:53:54,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:53:54,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:55,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:53:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:55,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 14:53:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:55,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 14:53:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:55,145 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 14:53:55,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364121861] [2020-09-24 14:53:55,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:53:55,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:53:55,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526662357] [2020-09-24 14:53:55,162 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:53:55,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:53:55,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:53:55,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:53:55,185 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2020-09-24 14:53:55,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:53:55,766 INFO L93 Difference]: Finished difference Result 414 states and 503 transitions. [2020-09-24 14:53:55,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 14:53:55,768 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-24 14:53:55,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:53:55,785 INFO L225 Difference]: With dead ends: 414 [2020-09-24 14:53:55,785 INFO L226 Difference]: Without dead ends: 209 [2020-09-24 14:53:55,792 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 14:53:55,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-09-24 14:53:55,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2020-09-24 14:53:55,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-09-24 14:53:55,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 235 transitions. [2020-09-24 14:53:55,863 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 235 transitions. Word has length 51 [2020-09-24 14:53:55,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:53:55,863 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 235 transitions. [2020-09-24 14:53:55,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:53:55,864 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 235 transitions. [2020-09-24 14:53:55,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-24 14:53:55,867 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:53:55,867 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 14:53:55,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:53:55,868 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:53:55,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:53:55,868 INFO L82 PathProgramCache]: Analyzing trace with hash -16125544, now seen corresponding path program 1 times [2020-09-24 14:53:55,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:53:55,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1164381342] [2020-09-24 14:53:55,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:53:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 14:53:56,067 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 14:53:56,068 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 14:53:56,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:53:56,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:53:56 BoogieIcfgContainer [2020-09-24 14:53:56,101 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:53:56,105 INFO L168 Benchmark]: Toolchain (without parser) took 2891.88 ms. Allocated memory was 147.8 MB in the beginning and 233.3 MB in the end (delta: 85.5 MB). Free memory was 103.1 MB in the beginning and 139.9 MB in the end (delta: -36.9 MB). Peak memory consumption was 48.6 MB. Max. memory is 7.1 GB. [2020-09-24 14:53:56,106 INFO L168 Benchmark]: CDTParser took 0.49 ms. Allocated memory is still 147.8 MB. Free memory was 122.3 MB in the beginning and 121.9 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-09-24 14:53:56,107 INFO L168 Benchmark]: CACSL2BoogieTranslator took 541.79 ms. Allocated memory was 147.8 MB in the beginning and 203.4 MB in the end (delta: 55.6 MB). Free memory was 102.6 MB in the beginning and 178.8 MB in the end (delta: -76.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-09-24 14:53:56,108 INFO L168 Benchmark]: Boogie Preprocessor took 81.75 ms. Allocated memory is still 203.4 MB. Free memory was 178.8 MB in the beginning and 176.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-09-24 14:53:56,109 INFO L168 Benchmark]: RCFGBuilder took 808.81 ms. Allocated memory is still 203.4 MB. Free memory was 176.0 MB in the beginning and 128.9 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. [2020-09-24 14:53:56,110 INFO L168 Benchmark]: TraceAbstraction took 1449.98 ms. Allocated memory was 203.4 MB in the beginning and 233.3 MB in the end (delta: 29.9 MB). Free memory was 128.0 MB in the beginning and 139.9 MB in the end (delta: -11.9 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-09-24 14:53:56,114 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.49 ms. Allocated memory is still 147.8 MB. Free memory was 122.3 MB in the beginning and 121.9 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 541.79 ms. Allocated memory was 147.8 MB in the beginning and 203.4 MB in the end (delta: 55.6 MB). Free memory was 102.6 MB in the beginning and 178.8 MB in the end (delta: -76.3 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 81.75 ms. Allocated memory is still 203.4 MB. Free memory was 178.8 MB in the beginning and 176.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 808.81 ms. Allocated memory is still 203.4 MB. Free memory was 176.0 MB in the beginning and 128.9 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1449.98 ms. Allocated memory was 203.4 MB in the beginning and 233.3 MB in the end (delta: 29.9 MB). Free memory was 128.0 MB in the beginning and 139.9 MB in the end (delta: -11.9 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 38, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L180] CALL isfinite_double(x) [L161] __int32_t hx; [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L180] RET isfinite_double(x) [L180] COND TRUE isfinite_double(x) [L182] CALL, EXPR fmod_double(x, y) [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); [L182] RET, EXPR fmod_double(x, y) [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x [L186] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 216 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, 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, 0.2s 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...