/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_1012a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:54:01,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:54:01,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:54:01,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:54:01,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:54:01,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:54:01,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:54:01,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:54:01,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:54:01,458 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:54:01,459 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:54:01,460 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:54:01,461 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:54:01,462 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:54:01,463 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:54:01,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:54:01,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:54:01,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:54:01,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:54:01,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:54:01,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:54:01,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:54:01,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:54:01,486 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:54:01,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 14:54:01,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:54:01,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:54:01,517 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:54:01,524 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 14:54:01,576 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:54:01,576 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:54:01,578 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:54:01,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:54:01,579 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:54:01,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:54:01,579 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:54:01,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:54:01,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:54:01,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:54:01,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:54:01,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:54:01,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:54:01,582 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:54:01,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:54:01,583 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:54:01,583 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:54:01,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:54:01,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:54:01,584 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:54:01,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:54:01,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:54:01,585 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:54:01,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:54:01,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:54:01,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:54:01,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:54:01,586 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:54:01,586 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:54:01,586 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 14:54:02,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:54:02,170 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:54:02,175 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:54:02,177 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:54:02,177 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:54:02,179 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1012a.c [2020-09-24 14:54:02,262 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28edb3063/d7fadec4eb6f4380a5b431702143875c/FLAG6d26b7eaa [2020-09-24 14:54:02,764 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:54:02,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1012a.c [2020-09-24 14:54:02,774 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28edb3063/d7fadec4eb6f4380a5b431702143875c/FLAG6d26b7eaa [2020-09-24 14:54:03,130 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28edb3063/d7fadec4eb6f4380a5b431702143875c [2020-09-24 14:54:03,146 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:54:03,152 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:54:03,153 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:54:03,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:54:03,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:54:03,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:54:03" (1/1) ... [2020-09-24 14:54:03,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@260ceee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:03, skipping insertion in model container [2020-09-24 14:54:03,164 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:54:03" (1/1) ... [2020-09-24 14:54:03,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:54:03,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:54:03,497 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:54:03,502 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:54:03,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:54:03,555 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:54:03,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:03 WrapperNode [2020-09-24 14:54:03,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:54:03,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:54:03,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:54:03,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:54:03,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:03" (1/1) ... [2020-09-24 14:54:03,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:03" (1/1) ... [2020-09-24 14:54:03,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:03" (1/1) ... [2020-09-24 14:54:03,660 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:03" (1/1) ... [2020-09-24 14:54:03,670 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:03" (1/1) ... [2020-09-24 14:54:03,676 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:03" (1/1) ... [2020-09-24 14:54:03,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:03" (1/1) ... [2020-09-24 14:54:03,681 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:54:03,681 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:54:03,681 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:54:03,682 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:54:03,685 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:03" (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 14:54:03,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:54:03,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:54:03,758 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-09-24 14:54:03,758 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-09-24 14:54:03,758 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:54:03,758 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:54:03,759 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-09-24 14:54:03,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:54:03,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 14:54:03,759 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:54:03,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:54:03,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:54:03,760 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 14:54:03,760 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-09-24 14:54:03,760 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:54:03,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:54:03,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:54:04,143 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:54:04,144 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-24 14:54:04,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:54:04 BoogieIcfgContainer [2020-09-24 14:54:04,150 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:54:04,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:54:04,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:54:04,155 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:54:04,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:54:03" (1/3) ... [2020-09-24 14:54:04,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c586682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:54:04, skipping insertion in model container [2020-09-24 14:54:04,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:54:03" (2/3) ... [2020-09-24 14:54:04,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c586682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:54:04, skipping insertion in model container [2020-09-24 14:54:04,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:54:04" (3/3) ... [2020-09-24 14:54:04,159 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1012a.c [2020-09-24 14:54:04,171 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:54:04,181 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:54:04,204 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:54:04,231 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:54:04,231 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:54:04,231 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:54:04,232 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:54:04,232 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:54:04,232 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:54:04,232 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:54:04,232 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:54:04,254 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-24 14:54:04,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 14:54:04,262 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:54:04,263 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] [2020-09-24 14:54:04,263 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:54:04,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:54:04,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1851120069, now seen corresponding path program 1 times [2020-09-24 14:54:04,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:54:04,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857771685] [2020-09-24 14:54:04,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:54:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:04,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:54:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:04,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 14:54:04,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:04,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-24 14:54:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:54:04,530 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 14:54:04,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857771685] [2020-09-24 14:54:04,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:54:04,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:54:04,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562625976] [2020-09-24 14:54:04,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:54:04,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:54:04,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:54:04,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:54:04,563 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2020-09-24 14:54:04,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:54:04,795 INFO L93 Difference]: Finished difference Result 118 states and 131 transitions. [2020-09-24 14:54:04,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 14:54:04,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-09-24 14:54:04,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:54:04,809 INFO L225 Difference]: With dead ends: 118 [2020-09-24 14:54:04,809 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 14:54:04,814 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 14:54:04,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 14:54:04,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-24 14:54:04,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 14:54:04,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 57 transitions. [2020-09-24 14:54:04,877 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 57 transitions. Word has length 30 [2020-09-24 14:54:04,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:54:04,878 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 57 transitions. [2020-09-24 14:54:04,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:54:04,878 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 57 transitions. [2020-09-24 14:54:04,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-24 14:54:04,880 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:54:04,881 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, 1, 1, 1, 1, 1, 1] [2020-09-24 14:54:04,881 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:54:04,881 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:54:04,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:54:04,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1434482942, now seen corresponding path program 1 times [2020-09-24 14:54:04,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:54:04,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260705141] [2020-09-24 14:54:04,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:54:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 14:54:04,988 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 14:54:04,988 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 14:54:04,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:54:05,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:54:05 BoogieIcfgContainer [2020-09-24 14:54:05,020 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:54:05,024 INFO L168 Benchmark]: Toolchain (without parser) took 1874.39 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 102.0 MB in the beginning and 110.7 MB in the end (delta: -8.7 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:05,025 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 14:54:05,026 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.03 ms. Allocated memory is still 138.9 MB. Free memory was 101.4 MB in the beginning and 90.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:05,027 INFO L168 Benchmark]: Boogie Preprocessor took 124.20 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 90.6 MB in the beginning and 176.5 MB in the end (delta: -85.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:05,028 INFO L168 Benchmark]: RCFGBuilder took 468.60 ms. Allocated memory is still 199.2 MB. Free memory was 176.5 MB in the beginning and 156.7 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:05,029 INFO L168 Benchmark]: TraceAbstraction took 868.84 ms. Allocated memory is still 199.2 MB. Free memory was 156.0 MB in the beginning and 110.7 MB in the end (delta: 45.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. [2020-09-24 14:54:05,033 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 403.03 ms. Allocated memory is still 138.9 MB. Free memory was 101.4 MB in the beginning and 90.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.20 ms. Allocated memory was 138.9 MB in the beginning and 199.2 MB in the end (delta: 60.3 MB). Free memory was 90.6 MB in the beginning and 176.5 MB in the end (delta: -85.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 468.60 ms. Allocated memory is still 199.2 MB. Free memory was 176.5 MB in the beginning and 156.7 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 868.84 ms. Allocated memory is still 199.2 MB. Free memory was 156.0 MB in the beginning and 110.7 MB in the end (delta: 45.3 MB). Peak memory consumption was 45.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 51]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 34. Possible FailurePath: [L46] float x = 1.0f / 0.0f; [L47] CALL, EXPR fabs_float(x) [L12] __uint32_t ix; [L14] ieee_float_shape_type gf_u; [L15] gf_u.value = (x) [L16] EXPR gf_u.word [L16] (ix) = gf_u.word [L19] ieee_float_shape_type sf_u; [L20] sf_u.word = (ix & 0x7fffffff) [L21] EXPR sf_u.value [L21] (x) = sf_u.value [L23] return x; [L47] RET, EXPR fabs_float(x) [L47] float res = fabs_float(x); [L50] CALL, EXPR isinf_float(res) [L28] __int32_t ix; [L30] ieee_float_shape_type gf_u; [L31] gf_u.value = (x) [L32] EXPR gf_u.word [L32] (ix) = gf_u.word [L34] ix &= 0x7fffffff [L35] return ((ix) == 0x7f800000L); [L50] RET, EXPR isinf_float(res) [L50] COND TRUE !isinf_float(res) [L51] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 65 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: 60 SDtfs, 11 SDslu, 40 SDs, 0 SdLazy, 70 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=65occurred 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, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 1798 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...