/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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_1032d.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 04:44:42,353 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 04:44:42,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 04:44:42,408 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 04:44:42,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 04:44:42,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 04:44:42,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 04:44:42,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 04:44:42,427 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 04:44:42,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 04:44:42,434 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 04:44:42,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 04:44:42,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 04:44:42,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 04:44:42,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 04:44:42,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 04:44:42,443 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 04:44:42,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 04:44:42,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 04:44:42,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 04:44:42,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 04:44:42,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 04:44:42,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 04:44:42,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 04:44:42,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 04:44:42,515 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 04:44:42,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 04:44:42,518 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 04:44:42,520 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 04:44:42,531 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 04:44:42,532 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 04:44:42,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 04:44:42,533 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 04:44:42,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 04:44:42,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 04:44:42,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 04:44:42,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 04:44:42,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 04:44:42,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 04:44:42,535 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 04:44:42,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 04:44:42,535 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 04:44:42,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 04:44:42,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 04:44:42,536 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 04:44:42,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 04:44:42,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 04:44:42,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 04:44:42,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 04:44:42,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 04:44:42,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 04:44:42,537 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 04:44:42,900 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 04:44:42,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 04:44:42,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 04:44:42,940 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 04:44:42,941 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 04:44:42,942 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032d.c [2020-11-07 04:44:43,027 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f35ed771/7af8cf7029b44425a9a6d9c7e0bedd31/FLAG7a8179263 [2020-11-07 04:44:43,695 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 04:44:43,695 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032d.c [2020-11-07 04:44:43,704 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f35ed771/7af8cf7029b44425a9a6d9c7e0bedd31/FLAG7a8179263 [2020-11-07 04:44:44,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f35ed771/7af8cf7029b44425a9a6d9c7e0bedd31 [2020-11-07 04:44:44,031 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 04:44:44,038 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 04:44:44,045 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 04:44:44,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 04:44:44,049 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 04:44:44,050 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:44:44" (1/1) ... [2020-11-07 04:44:44,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@249c61d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:44, skipping insertion in model container [2020-11-07 04:44:44,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:44:44" (1/1) ... [2020-11-07 04:44:44,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 04:44:44,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 04:44:44,283 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:44:44,293 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 04:44:44,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:44:44,348 INFO L208 MainTranslator]: Completed translation [2020-11-07 04:44:44,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:44 WrapperNode [2020-11-07 04:44:44,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 04:44:44,350 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 04:44:44,350 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 04:44:44,350 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 04:44:44,383 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:44" (1/1) ... [2020-11-07 04:44:44,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:44" (1/1) ... [2020-11-07 04:44:44,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:44" (1/1) ... [2020-11-07 04:44:44,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:44" (1/1) ... [2020-11-07 04:44:44,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:44" (1/1) ... [2020-11-07 04:44:44,459 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:44" (1/1) ... [2020-11-07 04:44:44,461 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:44" (1/1) ... [2020-11-07 04:44:44,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 04:44:44,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 04:44:44,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 04:44:44,474 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 04:44:44,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:44" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-11-07 04:44:44,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 04:44:44,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 04:44:44,579 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 04:44:44,579 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-11-07 04:44:44,579 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-11-07 04:44:44,580 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 04:44:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 04:44:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 04:44:44,580 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 04:44:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 04:44:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-11-07 04:44:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-07 04:44:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 04:44:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 04:44:44,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 04:44:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-07 04:44:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-11-07 04:44:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 04:44:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 04:44:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 04:44:44,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 04:44:45,335 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 04:44:45,336 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-07 04:44:45,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:44:45 BoogieIcfgContainer [2020-11-07 04:44:45,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 04:44:45,343 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 04:44:45,343 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 04:44:45,346 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 04:44:45,347 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:44:44" (1/3) ... [2020-11-07 04:44:45,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b87e14a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:44:45, skipping insertion in model container [2020-11-07 04:44:45,348 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:44" (2/3) ... [2020-11-07 04:44:45,348 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b87e14a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:44:45, skipping insertion in model container [2020-11-07 04:44:45,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:44:45" (3/3) ... [2020-11-07 04:44:45,350 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032d.c [2020-11-07 04:44:45,366 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 04:44:45,372 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 04:44:45,385 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 04:44:45,410 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 04:44:45,410 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 04:44:45,410 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 04:44:45,410 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 04:44:45,411 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 04:44:45,411 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 04:44:45,411 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 04:44:45,411 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 04:44:45,429 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2020-11-07 04:44:45,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-07 04:44:45,441 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:44:45,442 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] [2020-11-07 04:44:45,443 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:44:45,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:44:45,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1676310941, now seen corresponding path program 1 times [2020-11-07 04:44:45,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:44:45,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445562475] [2020-11-07 04:44:45,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:44:45,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:44:45,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:44:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:44:45,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 04:44:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:44:45,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 04:44:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:44:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 04:44:45,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445562475] [2020-11-07 04:44:45,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 04:44:45,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 04:44:45,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692567256] [2020-11-07 04:44:45,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 04:44:45,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:44:45,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 04:44:45,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 04:44:45,896 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 4 states. [2020-11-07 04:44:46,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:44:46,251 INFO L93 Difference]: Finished difference Result 211 states and 241 transitions. [2020-11-07 04:44:46,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 04:44:46,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-11-07 04:44:46,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:44:46,264 INFO L225 Difference]: With dead ends: 211 [2020-11-07 04:44:46,264 INFO L226 Difference]: Without dead ends: 107 [2020-11-07 04:44:46,269 INFO L677 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 [2020-11-07 04:44:46,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-11-07 04:44:46,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-11-07 04:44:46,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-07 04:44:46,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 114 transitions. [2020-11-07 04:44:46,329 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 114 transitions. Word has length 44 [2020-11-07 04:44:46,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:44:46,330 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 114 transitions. [2020-11-07 04:44:46,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 04:44:46,330 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 114 transitions. [2020-11-07 04:44:46,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-11-07 04:44:46,336 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:44:46,336 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, 1, 1, 1, 1, 1, 1] [2020-11-07 04:44:46,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 04:44:46,340 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:44:46,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:44:46,344 INFO L82 PathProgramCache]: Analyzing trace with hash 368578001, now seen corresponding path program 1 times [2020-11-07 04:44:46,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:44:46,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2381611] [2020-11-07 04:44:46,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:44:46,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 04:44:46,510 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 04:44:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 04:44:46,608 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 04:44:46,680 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 04:44:46,681 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 04:44:46,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 04:44:46,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:44:46 BoogieIcfgContainer [2020-11-07 04:44:46,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 04:44:46,773 INFO L168 Benchmark]: Toolchain (without parser) took 2738.21 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 119.4 MB in the beginning and 116.1 MB in the end (delta: 3.3 MB). Peak memory consumption was 36.8 MB. Max. memory is 8.0 GB. [2020-11-07 04:44:46,773 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 162.5 MB. Free memory is still 136.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 04:44:46,774 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.06 ms. Allocated memory is still 162.5 MB. Free memory was 118.8 MB in the beginning and 135.9 MB in the end (delta: -17.2 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. [2020-11-07 04:44:46,775 INFO L168 Benchmark]: Boogie Preprocessor took 121.18 ms. Allocated memory is still 162.5 MB. Free memory was 135.9 MB in the beginning and 144.8 MB in the end (delta: -8.8 MB). Peak memory consumption was 1.7 MB. Max. memory is 8.0 GB. [2020-11-07 04:44:46,776 INFO L168 Benchmark]: RCFGBuilder took 865.97 ms. Allocated memory is still 162.5 MB. Free memory was 144.8 MB in the beginning and 117.5 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2020-11-07 04:44:46,777 INFO L168 Benchmark]: TraceAbstraction took 1427.33 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 117.2 MB in the beginning and 116.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 34.6 MB. Max. memory is 8.0 GB. [2020-11-07 04:44:46,781 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 162.5 MB. Free memory is still 136.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 304.06 ms. Allocated memory is still 162.5 MB. Free memory was 118.8 MB in the beginning and 135.9 MB in the end (delta: -17.2 MB). Peak memory consumption was 4.7 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 121.18 ms. Allocated memory is still 162.5 MB. Free memory was 135.9 MB in the beginning and 144.8 MB in the end (delta: -8.8 MB). Peak memory consumption was 1.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 865.97 ms. Allocated memory is still 162.5 MB. Free memory was 144.8 MB in the beginning and 117.5 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1427.33 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 117.2 MB in the beginning and 116.1 MB in the end (delta: 1.0 MB). Peak memory consumption was 34.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 77, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 74. Possible FailurePath: [L88] double x = -1.0 / 0.0; [L89] CALL, EXPR round_double(x) VAL [\old(x)=8589934607] [L17] __int32_t msw, exponent_less_1023; VAL [\old(x)=8589934607, x=8589934607] [L18] __uint32_t lsw; VAL [\old(x)=8589934607, x=8589934607] [L20] ieee_double_shape_type ew_u; VAL [\old(x)=8589934607, ew_u={9:0}, x=8589934607] [L21] ew_u.value = (x) VAL [\old(x)=8589934607, ew_u={9:0}, x=8589934607] [L22] EXPR ew_u.parts.msw VAL [\old(x)=8589934607, ew_u={9:0}, ew_u.parts.msw=8589934590, x=8589934607] [L22] (msw) = ew_u.parts.msw VAL [\old(x)=8589934607, ew_u={9:0}, ew_u.parts.msw=8589934590, msw=-2, x=8589934607] [L23] EXPR ew_u.parts.lsw VAL [\old(x)=8589934607, ew_u={9:0}, ew_u.parts.lsw=8589934598, msw=-2, x=8589934607] [L23] (lsw) = ew_u.parts.lsw VAL [\old(x)=8589934607, ew_u={9:0}, ew_u.parts.lsw=8589934598, lsw=6, msw=-2, x=8589934607] [L25] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=8589934607, exponent_less_1023=1024, lsw=6, msw=-2, x=8589934607] [L26] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=8589934607, exponent_less_1023=1024, lsw=6, msw=-2, x=8589934607] [L40] COND TRUE exponent_less_1023 > 51 VAL [\old(x)=8589934607, exponent_less_1023=1024, lsw=6, msw=-2, x=8589934607] [L41] COND TRUE exponent_less_1023 == 1024 VAL [\old(x)=8589934607, exponent_less_1023=1024, lsw=6, msw=-2, x=8589934607] [L42] return x + x; VAL [\old(x)=8589934607, exponent_less_1023=1024, lsw=6, msw=-2, x=8589934607] [L89] RET, EXPR round_double(x) VAL [round_double(x)=8589934592, x=8589934607] [L89] double res = round_double(x); VAL [res=8589934592, round_double(x)=8589934592, x=8589934607] [L92] CALL, EXPR isinf_double(res) VAL [\old(x)=8589934592] [L67] __int32_t hx, lx; VAL [\old(x)=8589934592, x=8589934592] [L69] ieee_double_shape_type ew_u; VAL [\old(x)=8589934592, ew_u={3:0}, x=8589934592] [L70] ew_u.value = (x) VAL [\old(x)=8589934592, ew_u={3:0}, x=8589934592] [L71] EXPR ew_u.parts.msw VAL [\old(x)=8589934592, ew_u={3:0}, ew_u.parts.msw=4294967293, x=8589934592] [L71] (hx) = ew_u.parts.msw VAL [\old(x)=8589934592, ew_u={3:0}, ew_u.parts.msw=4294967293, hx=-3, x=8589934592] [L72] EXPR ew_u.parts.lsw VAL [\old(x)=8589934592, ew_u={3:0}, ew_u.parts.lsw=0, hx=-3, x=8589934592] [L72] (lx) = ew_u.parts.lsw VAL [(lx) = ew_u.parts.lsw=8589934601, \old(x)=8589934592, ew_u={3:0}, ew_u.parts.lsw=0, hx=-3, lx=0, x=8589934592] [L74] hx &= 0x7fffffff VAL [\old(x)=8589934592, lx=0, x=8589934592] [L75] hx |= (__uint32_t)(lx | (-lx)) >> 31 VAL [\old(x)=8589934592, hx=-1, lx=0, x=8589934592] [L76] hx = 0x7ff00000 - hx VAL [\old(x)=8589934592, hx=2146435073, lx=0, x=8589934592] [L77] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [\old(x)=8589934592, \result=0, hx=2146435073, lx=0, x=8589934592] [L92] RET, EXPR isinf_double(res) VAL [isinf_double(res)=0, res=8589934592, x=8589934607] [L92] COND TRUE !isinf_double(res) VAL [isinf_double(res)=0, res=8589934592, x=8589934607] [L93] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1032d.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 116 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 117 SDtfs, 19 SDslu, 81 SDs, 0 SdLazy, 133 SolverSat, 8 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=116occurred 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, 0.2s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 4171 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...