/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 21:36:08,689 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 21:36:08,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 21:36:08,738 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 21:36:08,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 21:36:08,747 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 21:36:08,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 21:36:08,754 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 21:36:08,758 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 21:36:08,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 21:36:08,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 21:36:08,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 21:36:08,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 21:36:08,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 21:36:08,770 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 21:36:08,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 21:36:08,774 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 21:36:08,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 21:36:08,777 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 21:36:08,787 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 21:36:08,789 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 21:36:08,790 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 21:36:08,791 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 21:36:08,792 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 21:36:08,804 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 21:36:08,823 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 21:36:08,824 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 21:36:08,825 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 21:36:08,827 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 21:36:08,841 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 21:36:08,841 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 21:36:08,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 21:36:08,844 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 21:36:08,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 21:36:08,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 21:36:08,844 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 21:36:08,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 21:36:08,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 21:36:08,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 21:36:08,846 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 21:36:08,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 21:36:08,846 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 21:36:08,846 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 21:36:08,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 21:36:08,847 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 21:36:08,847 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 21:36:08,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 21:36:08,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 21:36:08,848 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 21:36:08,848 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 21:36:08,848 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 21:36:08,849 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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: Use separate solver for trace checks -> true [2020-09-04 21:36:09,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 21:36:09,382 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 21:36:09,386 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 21:36:09,388 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 21:36:09,389 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 21:36:09,390 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c [2020-09-04 21:36:09,463 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/300887a08/a15a4952e6864f73b5741662bbd3ff5d/FLAG6ee2518e1 [2020-09-04 21:36:10,040 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 21:36:10,041 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c [2020-09-04 21:36:10,049 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/300887a08/a15a4952e6864f73b5741662bbd3ff5d/FLAG6ee2518e1 [2020-09-04 21:36:10,375 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/300887a08/a15a4952e6864f73b5741662bbd3ff5d [2020-09-04 21:36:10,387 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 21:36:10,389 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 21:36:10,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 21:36:10,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 21:36:10,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 21:36:10,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:36:10" (1/1) ... [2020-09-04 21:36:10,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31b01e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:10, skipping insertion in model container [2020-09-04 21:36:10,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:36:10" (1/1) ... [2020-09-04 21:36:10,409 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 21:36:10,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 21:36:10,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:36:10,684 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 21:36:10,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:36:10,747 INFO L208 MainTranslator]: Completed translation [2020-09-04 21:36:10,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:10 WrapperNode [2020-09-04 21:36:10,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 21:36:10,748 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 21:36:10,748 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 21:36:10,748 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 21:36:10,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:10" (1/1) ... [2020-09-04 21:36:10,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:10" (1/1) ... [2020-09-04 21:36:10,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:10" (1/1) ... [2020-09-04 21:36:10,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:10" (1/1) ... [2020-09-04 21:36:10,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:10" (1/1) ... [2020-09-04 21:36:10,872 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:10" (1/1) ... [2020-09-04 21:36:10,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:10" (1/1) ... [2020-09-04 21:36:10,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 21:36:10,878 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 21:36:10,878 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 21:36:10,878 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 21:36:10,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:10" (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 [2020-09-04 21:36:10,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 21:36:10,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 21:36:10,957 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-09-04 21:36:10,957 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-09-04 21:36:10,957 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 21:36:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 21:36:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-09-04 21:36:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 21:36:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 21:36:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 21:36:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 21:36:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 21:36:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 21:36:10,959 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-09-04 21:36:10,959 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 21:36:10,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 21:36:10,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 21:36:11,430 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 21:36:11,431 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-04 21:36:11,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:36:11 BoogieIcfgContainer [2020-09-04 21:36:11,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 21:36:11,439 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 21:36:11,439 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 21:36:11,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 21:36:11,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 09:36:10" (1/3) ... [2020-09-04 21:36:11,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf8d213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:36:11, skipping insertion in model container [2020-09-04 21:36:11,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:10" (2/3) ... [2020-09-04 21:36:11,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bf8d213 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:36:11, skipping insertion in model container [2020-09-04 21:36:11,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:36:11" (3/3) ... [2020-09-04 21:36:11,448 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032c.c [2020-09-04 21:36:11,459 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 21:36:11,469 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 21:36:11,494 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 21:36:11,518 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 21:36:11,518 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 21:36:11,518 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 21:36:11,519 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 21:36:11,519 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 21:36:11,519 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 21:36:11,519 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 21:36:11,519 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 21:36:11,539 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states. [2020-09-04 21:36:11,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-04 21:36:11,555 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:36:11,556 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] [2020-09-04 21:36:11,557 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:36:11,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:36:11,564 INFO L82 PathProgramCache]: Analyzing trace with hash 223530101, now seen corresponding path program 1 times [2020-09-04 21:36:11,573 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:36:11,574 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954859370] [2020-09-04 21:36:11,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:36:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:36:11,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:36:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:36:11,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:36:11,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:36:11,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 21:36:11,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:36:11,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 21:36:11,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954859370] [2020-09-04 21:36:11,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 21:36:11,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 21:36:11,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279050742] [2020-09-04 21:36:11,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 21:36:11,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:36:11,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 21:36:11,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 21:36:11,883 INFO L87 Difference]: Start difference. First operand 108 states. Second operand 4 states. [2020-09-04 21:36:12,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:36:12,328 INFO L93 Difference]: Finished difference Result 202 states and 231 transitions. [2020-09-04 21:36:12,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 21:36:12,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-09-04 21:36:12,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:36:12,346 INFO L225 Difference]: With dead ends: 202 [2020-09-04 21:36:12,346 INFO L226 Difference]: Without dead ends: 101 [2020-09-04 21:36:12,352 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 [2020-09-04 21:36:12,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-04 21:36:12,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-09-04 21:36:12,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-04 21:36:12,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 108 transitions. [2020-09-04 21:36:12,420 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 108 transitions. Word has length 38 [2020-09-04 21:36:12,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:36:12,421 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 108 transitions. [2020-09-04 21:36:12,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 21:36:12,421 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 108 transitions. [2020-09-04 21:36:12,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-04 21:36:12,424 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:36:12,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 21:36:12,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 21:36:12,425 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:36:12,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:36:12,426 INFO L82 PathProgramCache]: Analyzing trace with hash 32877217, now seen corresponding path program 1 times [2020-09-04 21:36:12,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:36:12,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624428007] [2020-09-04 21:36:12,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:36:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 21:36:12,661 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 21:36:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 21:36:12,755 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 21:36:12,794 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 21:36:12,794 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 21:36:12,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 21:36:12,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 09:36:12 BoogieIcfgContainer [2020-09-04 21:36:12,844 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 21:36:12,848 INFO L168 Benchmark]: Toolchain (without parser) took 2457.25 ms. Allocated memory was 140.0 MB in the beginning and 234.9 MB in the end (delta: 94.9 MB). Free memory was 104.5 MB in the beginning and 195.2 MB in the end (delta: -90.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:12,849 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 140.0 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. [2020-09-04 21:36:12,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.33 ms. Allocated memory is still 140.0 MB. Free memory was 104.1 MB in the beginning and 92.6 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:12,850 INFO L168 Benchmark]: Boogie Preprocessor took 129.31 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 92.6 MB in the beginning and 179.5 MB in the end (delta: -86.9 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:12,851 INFO L168 Benchmark]: RCFGBuilder took 559.82 ms. Allocated memory is still 202.4 MB. Free memory was 179.5 MB in the beginning and 152.0 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:12,852 INFO L168 Benchmark]: TraceAbstraction took 1405.18 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 151.4 MB in the beginning and 195.2 MB in the end (delta: -43.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 21:36:12,856 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 140.0 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 357.33 ms. Allocated memory is still 140.0 MB. Free memory was 104.1 MB in the beginning and 92.6 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 129.31 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 92.6 MB in the beginning and 179.5 MB in the end (delta: -86.9 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 559.82 ms. Allocated memory is still 202.4 MB. Free memory was 179.5 MB in the beginning and 152.0 MB in the end (delta: 27.5 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1405.18 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 151.4 MB in the beginning and 195.2 MB in the end (delta: -43.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 91]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 75, overapproximation of someBinaryArithmeticDOUBLEoperation at line 40, overapproximation of bitwiseAnd at line 72. Possible FailurePath: [L86] double x = 1.0 / 0.0; [L87] CALL, EXPR round_double(x) VAL [\old(x)=8589934599] [L15] __int32_t msw, exponent_less_1023; VAL [\old(x)=8589934599, x=8589934599] [L16] __uint32_t lsw; VAL [\old(x)=8589934599, x=8589934599] [L18] ieee_double_shape_type ew_u; VAL [\old(x)=8589934599, ew_u={3:0}, x=8589934599] [L19] ew_u.value = (x) VAL [\old(x)=8589934599, ew_u={3:0}, x=8589934599] [L20] EXPR ew_u.parts.msw VAL [\old(x)=8589934599, ew_u={3:0}, ew_u.parts.msw=8589934590, x=8589934599] [L20] (msw) = ew_u.parts.msw VAL [(msw) = ew_u.parts.msw=8589934597, \old(x)=8589934599, ew_u={3:0}, ew_u.parts.msw=8589934590, msw=-2, x=8589934599] [L21] EXPR ew_u.parts.lsw VAL [\old(x)=8589934599, ew_u={3:0}, ew_u.parts.lsw=8589934603, msw=-2, x=8589934599] [L21] (lsw) = ew_u.parts.lsw VAL [\old(x)=8589934599, ew_u={3:0}, ew_u.parts.lsw=8589934603, lsw=11, msw=-2, x=8589934599] [L23] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=8589934599, exponent_less_1023=1024, lsw=11, msw=-2, x=8589934599] [L24] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=8589934599, exponent_less_1023=1024, lsw=11, msw=-2, x=8589934599] [L38] COND TRUE exponent_less_1023 > 51 VAL [\old(x)=8589934599, exponent_less_1023=1024, lsw=11, msw=-2, x=8589934599] [L39] COND TRUE exponent_less_1023 == 1024 VAL [\old(x)=8589934599, exponent_less_1023=1024, lsw=11, msw=-2, x=8589934599] [L40] return x + x; VAL [\old(x)=8589934599, exponent_less_1023=1024, lsw=11, msw=-2, x=8589934599] [L87] RET, EXPR round_double(x) VAL [round_double(x)=8589934596, x=8589934599] [L87] double res = round_double(x); VAL [res=8589934596, round_double(x)=8589934596, x=8589934599] [L90] CALL, EXPR isinf_double(res) VAL [\old(x)=8589934596] [L65] __int32_t hx, lx; VAL [\old(x)=8589934596, x=8589934596] [L67] ieee_double_shape_type ew_u; VAL [\old(x)=8589934596, ew_u={2:0}, x=8589934596] [L68] ew_u.value = (x) VAL [\old(x)=8589934596, ew_u={2:0}, x=8589934596] [L69] EXPR ew_u.parts.msw VAL [\old(x)=8589934596, ew_u={2:0}, ew_u.parts.msw=8589934589, x=8589934596] [L69] (hx) = ew_u.parts.msw VAL [(hx) = ew_u.parts.msw=8589934592, \old(x)=8589934596, ew_u={2:0}, ew_u.parts.msw=8589934589, hx=-3, x=8589934596] [L70] EXPR ew_u.parts.lsw VAL [\old(x)=8589934596, ew_u={2:0}, ew_u.parts.lsw=4294967292, hx=-3, x=8589934596] [L70] (lx) = ew_u.parts.lsw VAL [(lx) = ew_u.parts.lsw=8589934602, \old(x)=8589934596, ew_u={2:0}, ew_u.parts.lsw=4294967292, hx=-3, lx=-4, x=8589934596] [L72] hx &= 0x7fffffff VAL [\old(x)=8589934596, lx=-4, x=8589934596] [L73] hx |= (__uint32_t)(lx | (-lx)) >> 31 VAL [\old(x)=8589934596, hx=-1, lx=-4, x=8589934596] [L74] hx = 0x7ff00000 - hx VAL [\old(x)=8589934596, hx=2146435073, lx=-4, x=8589934596] [L75] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [\old(x)=8589934596, \result=0, hx=2146435073, lx=-4, x=8589934596] [L90] RET, EXPR isinf_double(res) VAL [isinf_double(res)=0, res=8589934596, x=8589934599] [L90] COND TRUE !isinf_double(res) VAL [isinf_double(res)=0, res=8589934596, x=8589934599] [L91] __VERIFIER_error() VAL [res=8589934596, x=8589934599] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 108 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 17 SDslu, 82 SDs, 0 SdLazy, 124 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=108occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 2590 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...