/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=WIDEST --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/double_req_bl_1072d.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 22:07:44,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 22:07:44,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 22:07:44,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 22:07:44,666 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 22:07:44,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 22:07:44,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 22:07:44,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 22:07:44,673 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 22:07:44,674 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 22:07:44,675 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 22:07:44,676 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 22:07:44,676 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 22:07:44,677 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 22:07:44,679 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 22:07:44,680 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 22:07:44,681 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 22:07:44,682 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 22:07:44,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 22:07:44,689 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 22:07:44,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 22:07:44,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 22:07:44,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 22:07:44,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 22:07:44,704 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-21 22:07:44,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 22:07:44,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 22:07:44,720 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 22:07:44,722 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 22:07:44,768 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 22:07:44,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 22:07:44,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 22:07:44,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 22:07:44,772 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 22:07:44,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 22:07:44,772 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 22:07:44,772 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 22:07:44,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 22:07:44,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 22:07:44,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 22:07:44,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 22:07:44,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 22:07:44,775 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 22:07:44,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 22:07:44,775 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 22:07:44,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 22:07:44,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 22:07:44,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 22:07:44,776 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 22:07:44,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 22:07:44,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 22:07:44,777 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 22:07:44,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 22:07:44,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 22:07:44,778 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 22:07:44,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 22:07:44,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 22:07:44,778 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 22:07:44,779 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=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-08-21 22:07:45,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 22:07:45,159 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 22:07:45,163 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 22:07:45,164 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 22:07:45,165 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 22:07:45,165 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c [2020-08-21 22:07:45,230 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cec118123/52edfe5dafee4e9fa34ee691efbb840b/FLAG15dc524ef [2020-08-21 22:07:45,689 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 22:07:45,690 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c [2020-08-21 22:07:45,696 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cec118123/52edfe5dafee4e9fa34ee691efbb840b/FLAG15dc524ef [2020-08-21 22:07:46,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cec118123/52edfe5dafee4e9fa34ee691efbb840b [2020-08-21 22:07:46,078 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 22:07:46,080 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 22:07:46,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 22:07:46,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 22:07:46,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 22:07:46,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:07:46" (1/1) ... [2020-08-21 22:07:46,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea71ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:46, skipping insertion in model container [2020-08-21 22:07:46,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 10:07:46" (1/1) ... [2020-08-21 22:07:46,100 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 22:07:46,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 22:07:46,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:07:46,419 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 22:07:46,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 22:07:46,569 INFO L208 MainTranslator]: Completed translation [2020-08-21 22:07:46,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:46 WrapperNode [2020-08-21 22:07:46,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 22:07:46,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 22:07:46,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 22:07:46,571 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 22:07:46,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:46" (1/1) ... [2020-08-21 22:07:46,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:46" (1/1) ... [2020-08-21 22:07:46,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:46" (1/1) ... [2020-08-21 22:07:46,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:46" (1/1) ... [2020-08-21 22:07:46,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:46" (1/1) ... [2020-08-21 22:07:46,617 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:46" (1/1) ... [2020-08-21 22:07:46,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:46" (1/1) ... [2020-08-21 22:07:46,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 22:07:46,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 22:07:46,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 22:07:46,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 22:07:46,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:46" (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 22:07:46,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 22:07:46,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 22:07:46,692 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-21 22:07:46,692 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2020-08-21 22:07:46,692 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-08-21 22:07:46,692 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 22:07:46,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 22:07:46,693 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-21 22:07:46,693 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2020-08-21 22:07:46,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 22:07:46,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-21 22:07:46,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 22:07:46,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 22:07:46,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 22:07:46,695 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-21 22:07:46,695 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-08-21 22:07:46,696 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 22:07:46,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 22:07:46,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 22:07:47,167 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 22:07:47,168 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-08-21 22:07:47,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:07:47 BoogieIcfgContainer [2020-08-21 22:07:47,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 22:07:47,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 22:07:47,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 22:07:47,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 22:07:47,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 10:07:46" (1/3) ... [2020-08-21 22:07:47,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@712e7eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:07:47, skipping insertion in model container [2020-08-21 22:07:47,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 10:07:46" (2/3) ... [2020-08-21 22:07:47,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@712e7eea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 10:07:47, skipping insertion in model container [2020-08-21 22:07:47,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 10:07:47" (3/3) ... [2020-08-21 22:07:47,180 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2020-08-21 22:07:47,190 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 22:07:47,198 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 22:07:47,213 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 22:07:47,233 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 22:07:47,233 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 22:07:47,233 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 22:07:47,233 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 22:07:47,233 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 22:07:47,234 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 22:07:47,234 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 22:07:47,234 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 22:07:47,251 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-08-21 22:07:47,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-21 22:07:47,258 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:07:47,259 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] [2020-08-21 22:07:47,259 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:07:47,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:07:47,266 INFO L82 PathProgramCache]: Analyzing trace with hash -48260949, now seen corresponding path program 1 times [2020-08-21 22:07:47,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:07:47,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543455382] [2020-08-21 22:07:47,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:07:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:07:47,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 22:07:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:07:47,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-21 22:07:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:07:47,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-21 22:07:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 22:07:47,510 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 22:07:47,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543455382] [2020-08-21 22:07:47,514 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 22:07:47,514 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-21 22:07:47,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963878749] [2020-08-21 22:07:47,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-21 22:07:47,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 22:07:47,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-21 22:07:47,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-21 22:07:47,541 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2020-08-21 22:07:47,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 22:07:47,754 INFO L93 Difference]: Finished difference Result 72 states and 101 transitions. [2020-08-21 22:07:47,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-21 22:07:47,756 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-21 22:07:47,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 22:07:47,765 INFO L225 Difference]: With dead ends: 72 [2020-08-21 22:07:47,765 INFO L226 Difference]: Without dead ends: 36 [2020-08-21 22:07:47,769 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 [2020-08-21 22:07:47,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-21 22:07:47,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-08-21 22:07:47,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-08-21 22:07:47,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-08-21 22:07:47,809 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 25 [2020-08-21 22:07:47,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 22:07:47,810 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-08-21 22:07:47,810 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-21 22:07:47,810 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-08-21 22:07:47,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-21 22:07:47,812 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 22:07:47,812 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] [2020-08-21 22:07:47,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 22:07:47,814 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 22:07:47,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 22:07:47,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1916763246, now seen corresponding path program 1 times [2020-08-21 22:07:47,815 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 22:07:47,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428948498] [2020-08-21 22:07:47,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 22:07:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 22:07:48,004 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 22:07:48,004 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 22:07:48,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 22:07:48,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 10:07:48 BoogieIcfgContainer [2020-08-21 22:07:48,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 22:07:48,036 INFO L168 Benchmark]: Toolchain (without parser) took 1954.45 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 104.0 MB in the beginning and 108.3 MB in the end (delta: -4.3 MB). Peak memory consumption was 58.6 MB. Max. memory is 7.1 GB. [2020-08-21 22:07:48,037 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 22:07:48,038 INFO L168 Benchmark]: CACSL2BoogieTranslator took 486.20 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 103.8 MB in the beginning and 181.4 MB in the end (delta: -77.7 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-08-21 22:07:48,039 INFO L168 Benchmark]: Boogie Preprocessor took 56.64 ms. Allocated memory is still 204.5 MB. Free memory was 181.4 MB in the beginning and 178.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-08-21 22:07:48,040 INFO L168 Benchmark]: RCFGBuilder took 544.39 ms. Allocated memory is still 204.5 MB. Free memory was 178.9 MB in the beginning and 154.6 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-08-21 22:07:48,041 INFO L168 Benchmark]: TraceAbstraction took 859.51 ms. Allocated memory is still 204.5 MB. Free memory was 154.0 MB in the beginning and 108.3 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. [2020-08-21 22:07:48,045 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 486.20 ms. Allocated memory was 141.6 MB in the beginning and 204.5 MB in the end (delta: 62.9 MB). Free memory was 103.8 MB in the beginning and 181.4 MB in the end (delta: -77.7 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.64 ms. Allocated memory is still 204.5 MB. Free memory was 181.4 MB in the beginning and 178.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 544.39 ms. Allocated memory is still 204.5 MB. Free memory was 178.9 MB in the beginning and 154.6 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 859.51 ms. Allocated memory is still 204.5 MB. Free memory was 154.0 MB in the beginning and 108.3 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 89]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 72, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 71. Possible FailurePath: [L84] double x = -1.0 / 0.0; [L85] CALL, EXPR trunc_double(x) [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L30] COND FALSE !(exponent_less_1023 < 20) [L47] COND TRUE exponent_less_1023 > 51 [L48] COND TRUE exponent_less_1023 == 1024 [L49] return x + x; [L85] RET, EXPR trunc_double(x) [L85] double res = trunc_double(x); [L88] CALL, EXPR isinf_double(res) [L64] __int32_t hx, lx; [L66] ieee_double_shape_type ew_u; [L67] ew_u.value = (x) [L68] EXPR ew_u.parts.msw [L68] (hx) = ew_u.parts.msw [L69] EXPR ew_u.parts.lsw [L69] (lx) = ew_u.parts.lsw [L71] hx &= 0x7fffffff [L72] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L73] hx = 0x7ff00000 - hx [L74] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L88] RET, EXPR isinf_double(res) [L88] COND TRUE !isinf_double(res) [L89] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 43 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: 35 SDtfs, 30 SDslu, 5 SDs, 0 SdLazy, 44 SolverSat, 13 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=40occurred 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, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1368 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...