/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/float_req_bl_1032d.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:54:04,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:54:04,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:54:04,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:54:04,608 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:54:04,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:54:04,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:54:04,623 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:54:04,626 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:54:04,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:54:04,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:54:04,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:54:04,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:54:04,634 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:54:04,636 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:54:04,638 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:54:04,639 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:54:04,643 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:54:04,644 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:54:04,652 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:54:04,656 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:54:04,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:54:04,658 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:54:04,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:54:04,665 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 14:54:04,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:54:04,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:54:04,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:54:04,680 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 14:54:04,727 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:54:04,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:54:04,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:54:04,729 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:54:04,729 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:54:04,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:54:04,729 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:54:04,730 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:54:04,730 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:54:04,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:54:04,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:54:04,731 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:54:04,731 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:54:04,731 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:54:04,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:54:04,731 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:54:04,732 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:54:04,732 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:54:04,732 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:54:04,732 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:54:04,733 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:54:04,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:54:04,733 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:54:04,733 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:54:04,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:54:04,734 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:54:04,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:54:04,734 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:54:04,734 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:54:04,734 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 14:54:05,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:54:05,191 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:54:05,196 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:54:05,198 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:54:05,198 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:54:05,199 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1032d.c [2020-09-24 14:54:05,288 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a821d108/c39334ea112d4a3eb241065e1f7682d7/FLAG3b232baa9 [2020-09-24 14:54:05,845 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:54:05,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1032d.c [2020-09-24 14:54:05,859 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a821d108/c39334ea112d4a3eb241065e1f7682d7/FLAG3b232baa9 [2020-09-24 14:54:06,157 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5a821d108/c39334ea112d4a3eb241065e1f7682d7 [2020-09-24 14:54:06,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:54:06,180 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:54:06,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:54:06,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:54:06,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:54:06,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:54:06" (1/1) ... [2020-09-24 14:54:06,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25b090d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:06, skipping insertion in model container [2020-09-24 14:54:06,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:54:06" (1/1) ... [2020-09-24 14:54:06,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:54:06,228 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:54:06,456 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:54:06,464 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:54:06,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:54:06,545 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:54:06,546 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:06 WrapperNode [2020-09-24 14:54:06,546 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:54:06,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:54:06,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:54:06,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:54:06,639 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:06" (1/1) ... [2020-09-24 14:54:06,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:06" (1/1) ... [2020-09-24 14:54:06,650 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:06" (1/1) ... [2020-09-24 14:54:06,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:06" (1/1) ... [2020-09-24 14:54:06,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:06" (1/1) ... [2020-09-24 14:54:06,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:06" (1/1) ... [2020-09-24 14:54:06,674 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:06" (1/1) ... [2020-09-24 14:54:06,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:54:06,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:54:06,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:54:06,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:54:06,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:06" (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 14:54:06,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:54:06,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:54:06,747 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2020-09-24 14:54:06,747 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-09-24 14:54:06,747 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:54:06,747 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:54:06,747 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2020-09-24 14:54:06,748 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:54:06,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 14:54:06,748 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:54:06,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:54:06,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:54:06,749 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 14:54:06,749 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-09-24 14:54:06,749 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:54:06,749 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:54:06,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:54:07,116 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:54:07,117 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-24 14:54:07,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:54:07 BoogieIcfgContainer [2020-09-24 14:54:07,123 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:54:07,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:54:07,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:54:07,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:54:07,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:54:06" (1/3) ... [2020-09-24 14:54:07,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f76cd09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:54:07, skipping insertion in model container [2020-09-24 14:54:07,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:06" (2/3) ... [2020-09-24 14:54:07,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f76cd09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:54:07, skipping insertion in model container [2020-09-24 14:54:07,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:54:07" (3/3) ... [2020-09-24 14:54:07,155 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032d.c [2020-09-24 14:54:07,164 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:54:07,174 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:54:07,194 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:54:07,221 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:54:07,221 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:54:07,221 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:54:07,221 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:54:07,222 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:54:07,222 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:54:07,222 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:54:07,222 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:54:07,245 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2020-09-24 14:54:07,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 14:54:07,253 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:54:07,254 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] [2020-09-24 14:54:07,254 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:54:07,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:54:07,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1159815618, now seen corresponding path program 1 times [2020-09-24 14:54:07,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:54:07,271 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624157559] [2020-09-24 14:54:07,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:54:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:07,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:54:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:07,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 14:54:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:07,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 14:54:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:07,534 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 14:54:07,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624157559] [2020-09-24 14:54:07,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:54:07,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:54:07,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870282660] [2020-09-24 14:54:07,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:54:07,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:54:07,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:54:07,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:54:07,567 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 4 states. [2020-09-24 14:54:07,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:54:07,798 INFO L93 Difference]: Finished difference Result 147 states and 170 transitions. [2020-09-24 14:54:07,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 14:54:07,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-09-24 14:54:07,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:54:07,814 INFO L225 Difference]: With dead ends: 147 [2020-09-24 14:54:07,814 INFO L226 Difference]: Without dead ends: 73 [2020-09-24 14:54:07,819 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 14:54:07,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-24 14:54:07,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-09-24 14:54:07,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-24 14:54:07,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-09-24 14:54:07,877 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 33 [2020-09-24 14:54:07,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:54:07,878 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-09-24 14:54:07,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:54:07,878 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-09-24 14:54:07,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 14:54:07,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:54:07,881 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 14:54:07,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:54:07,881 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:54:07,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:54:07,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1327205882, now seen corresponding path program 1 times [2020-09-24 14:54:07,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:54:07,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719512404] [2020-09-24 14:54:07,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:54:07,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 14:54:08,005 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 14:54:08,005 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 14:54:08,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:54:08,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:54:08 BoogieIcfgContainer [2020-09-24 14:54:08,034 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:54:08,038 INFO L168 Benchmark]: Toolchain (without parser) took 1860.43 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 104.3 MB in the beginning and 107.4 MB in the end (delta: -3.1 MB). Peak memory consumption was 59.8 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:08,039 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. [2020-09-24 14:54:08,040 INFO L168 Benchmark]: CACSL2BoogieTranslator took 363.16 ms. Allocated memory is still 141.0 MB. Free memory was 103.8 MB in the beginning and 92.5 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:08,041 INFO L168 Benchmark]: Boogie Preprocessor took 130.23 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 92.5 MB in the beginning and 181.4 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:08,042 INFO L168 Benchmark]: RCFGBuilder took 446.08 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 158.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:08,046 INFO L168 Benchmark]: TraceAbstraction took 901.93 ms. Allocated memory is still 203.9 MB. Free memory was 158.3 MB in the beginning and 107.4 MB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:08,051 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.2 MB in the end (delta: 419.4 kB). Peak memory consumption was 419.4 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 363.16 ms. Allocated memory is still 141.0 MB. Free memory was 103.8 MB in the beginning and 92.5 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.23 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 92.5 MB in the beginning and 181.4 MB in the end (delta: -88.9 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 446.08 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 158.3 MB in the end (delta: 23.1 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 901.93 ms. Allocated memory is still 203.9 MB. Free memory was 158.3 MB in the beginning and 107.4 MB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 78]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 42, overapproximation of bitwiseAnd at line 62. Possible FailurePath: [L73] float x = -1.0f / 0.0f; [L74] CALL, EXPR round_float(x) [L12] __uint32_t w; [L14] int exponent_less_127; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L22] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 [L24] COND FALSE !(exponent_less_127 < 23) [L40] COND TRUE exponent_less_127 == 128 [L42] return x + x; [L74] RET, EXPR round_float(x) [L74] float res = round_float(x); [L77] CALL, EXPR isinf_float(res) [L56] __int32_t ix; [L58] ieee_float_shape_type gf_u; [L59] gf_u.value = (x) [L60] EXPR gf_u.word [L60] (ix) = gf_u.word [L62] ix &= 0x7fffffff [L63] return ((ix) == 0x7f800000L); [L77] RET, EXPR isinf_float(res) [L77] COND TRUE !isinf_float(res) [L78] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 80 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: 80 SDtfs, 13 SDslu, 59 SDs, 0 SdLazy, 89 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=80occurred 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, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 2080 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...