/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -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 0.1.25-177f698 [2020-08-21 15:41:06,383 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 15:41:06,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 15:41:06,428 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 15:41:06,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 15:41:06,438 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 15:41:06,440 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 15:41:06,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 15:41:06,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 15:41:06,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 15:41:06,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 15:41:06,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 15:41:06,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 15:41:06,454 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 15:41:06,456 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 15:41:06,457 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 15:41:06,459 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 15:41:06,460 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 15:41:06,461 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 15:41:06,469 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 15:41:06,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 15:41:06,472 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 15:41:06,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 15:41:06,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 15:41:06,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 15:41:06,476 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 15:41:06,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 15:41:06,482 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 15:41:06,482 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 15:41:06,483 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-21 15:41:06,491 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 15:41:06,492 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 15:41:06,493 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 15:41:06,494 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 15:41:06,531 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 15:41:06,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 15:41:06,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 15:41:06,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 15:41:06,534 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 15:41:06,534 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 15:41:06,534 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 15:41:06,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 15:41:06,535 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 15:41:06,535 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 15:41:06,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 15:41:06,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 15:41:06,536 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 15:41:06,537 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 15:41:06,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 15:41:06,537 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 15:41:06,537 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 15:41:06,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 15:41:06,538 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 15:41:06,538 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 15:41:06,538 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 15:41:06,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:41:06,539 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 15:41:06,539 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 15:41:06,539 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 15:41:06,539 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 15:41:06,539 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 15:41:06,539 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 15:41:06,540 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 15:41:06,540 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 15:41:06,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 15:41:06,825 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 15:41:06,829 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 15:41:06,830 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 15:41:06,831 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 15:41:06,831 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1032d.c [2020-08-21 15:41:06,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d29644068/fe2deec207c24d70a5dcd563326c22a3/FLAG2c8adcaab [2020-08-21 15:41:07,377 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 15:41:07,378 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1032d.c [2020-08-21 15:41:07,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d29644068/fe2deec207c24d70a5dcd563326c22a3/FLAG2c8adcaab [2020-08-21 15:41:07,740 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d29644068/fe2deec207c24d70a5dcd563326c22a3 [2020-08-21 15:41:07,748 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 15:41:07,749 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 15:41:07,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 15:41:07,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 15:41:07,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 15:41:07,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:41:07" (1/1) ... [2020-08-21 15:41:07,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2584cbd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:41:07, skipping insertion in model container [2020-08-21 15:41:07,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:41:07" (1/1) ... [2020-08-21 15:41:07,766 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 15:41:07,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 15:41:08,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:41:08,006 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 15:41:08,029 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 15:41:08,136 INFO L208 MainTranslator]: Completed translation [2020-08-21 15:41:08,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:41:08 WrapperNode [2020-08-21 15:41:08,136 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 15:41:08,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 15:41:08,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 15:41:08,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 15:41:08,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:41:08" (1/1) ... [2020-08-21 15:41:08,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:41:08" (1/1) ... [2020-08-21 15:41:08,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:41:08" (1/1) ... [2020-08-21 15:41:08,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:41:08" (1/1) ... [2020-08-21 15:41:08,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:41:08" (1/1) ... [2020-08-21 15:41:08,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:41:08" (1/1) ... [2020-08-21 15:41:08,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:41:08" (1/1) ... [2020-08-21 15:41:08,182 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 15:41:08,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 15:41:08,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 15:41:08,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 15:41:08,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:41:08" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 15:41:08,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 15:41:08,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 15:41:08,245 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2020-08-21 15:41:08,246 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-08-21 15:41:08,246 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 15:41:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 15:41:08,246 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2020-08-21 15:41:08,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 15:41:08,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 15:41:08,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 15:41:08,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 15:41:08,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 15:41:08,248 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 15:41:08,249 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-08-21 15:41:08,249 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 15:41:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 15:41:08,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 15:41:08,538 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 15:41:08,538 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-21 15:41:08,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:41:08 BoogieIcfgContainer [2020-08-21 15:41:08,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 15:41:08,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 15:41:08,546 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 15:41:08,550 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 15:41:08,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:41:07" (1/3) ... [2020-08-21 15:41:08,551 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1200afac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:41:08, skipping insertion in model container [2020-08-21 15:41:08,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:41:08" (2/3) ... [2020-08-21 15:41:08,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1200afac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:41:08, skipping insertion in model container [2020-08-21 15:41:08,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:41:08" (3/3) ... [2020-08-21 15:41:08,555 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032d.c [2020-08-21 15:41:08,568 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 15:41:08,578 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 15:41:08,597 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 15:41:08,625 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 15:41:08,625 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 15:41:08,625 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 15:41:08,625 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 15:41:08,626 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 15:41:08,626 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 15:41:08,626 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 15:41:08,626 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 15:41:08,646 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-21 15:41:08,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-21 15:41:08,654 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:41:08,655 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 15:41:08,656 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:41:08,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:41:08,663 INFO L82 PathProgramCache]: Analyzing trace with hash 636729620, now seen corresponding path program 1 times [2020-08-21 15:41:08,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:41:08,672 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419531282] [2020-08-21 15:41:08,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:41:08,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:41:08,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 15:41:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:41:08,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 15:41:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:41:08,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-21 15:41:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 15:41:08,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 15:41:08,939 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419531282] [2020-08-21 15:41:08,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 15:41:08,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 15:41:08,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894071809] [2020-08-21 15:41:08,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 15:41:08,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 15:41:08,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 15:41:08,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 15:41:08,960 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 4 states. [2020-08-21 15:41:09,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 15:41:09,155 INFO L93 Difference]: Finished difference Result 66 states and 89 transitions. [2020-08-21 15:41:09,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 15:41:09,158 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-08-21 15:41:09,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 15:41:09,169 INFO L225 Difference]: With dead ends: 66 [2020-08-21 15:41:09,169 INFO L226 Difference]: Without dead ends: 33 [2020-08-21 15:41:09,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-21 15:41:09,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-21 15:41:09,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-08-21 15:41:09,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-21 15:41:09,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-08-21 15:41:09,218 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 24 [2020-08-21 15:41:09,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 15:41:09,219 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-08-21 15:41:09,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 15:41:09,219 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-08-21 15:41:09,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-21 15:41:09,220 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 15:41:09,221 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] [2020-08-21 15:41:09,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 15:41:09,221 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 15:41:09,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 15:41:09,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1180797057, now seen corresponding path program 1 times [2020-08-21 15:41:09,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 15:41:09,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [783042297] [2020-08-21 15:41:09,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 15:41:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 15:41:09,310 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 15:41:09,310 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 15:41:09,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 15:41:09,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:41:09 BoogieIcfgContainer [2020-08-21 15:41:09,336 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 15:41:09,339 INFO L168 Benchmark]: Toolchain (without parser) took 1589.19 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.9 MB in the beginning and 118.6 MB in the end (delta: -14.7 MB). Peak memory consumption was 48.2 MB. Max. memory is 7.1 GB. [2020-08-21 15:41:09,340 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-21 15:41:09,341 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.79 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.6 MB in the beginning and 182.3 MB in the end (delta: -78.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-08-21 15:41:09,342 INFO L168 Benchmark]: Boogie Preprocessor took 45.18 ms. Allocated memory is still 203.9 MB. Free memory was 182.3 MB in the beginning and 180.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-21 15:41:09,343 INFO L168 Benchmark]: RCFGBuilder took 360.61 ms. Allocated memory is still 203.9 MB. Free memory was 180.0 MB in the beginning and 161.0 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2020-08-21 15:41:09,344 INFO L168 Benchmark]: TraceAbstraction took 790.52 ms. Allocated memory is still 203.9 MB. Free memory was 160.4 MB in the beginning and 118.6 MB in the end (delta: 41.8 MB). Peak memory consumption was 41.8 MB. Max. memory is 7.1 GB. [2020-08-21 15:41:09,348 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 386.79 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.6 MB in the beginning and 182.3 MB in the end (delta: -78.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.18 ms. Allocated memory is still 203.9 MB. Free memory was 182.3 MB in the beginning and 180.0 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 360.61 ms. Allocated memory is still 203.9 MB. Free memory was 180.0 MB in the beginning and 161.0 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 790.52 ms. Allocated memory is still 203.9 MB. Free memory was 160.4 MB in the beginning and 118.6 MB in the end (delta: 41.8 MB). Peak memory consumption was 41.8 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, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 30 SDslu, 5 SDs, 0 SdLazy, 40 SolverSat, 11 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1288 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...