/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_1032b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 04:44:39,623 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 04:44:39,627 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 04:44:39,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 04:44:39,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 04:44:39,685 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 04:44:39,689 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 04:44:39,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 04:44:39,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 04:44:39,706 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 04:44:39,707 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 04:44:39,708 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 04:44:39,709 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 04:44:39,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 04:44:39,714 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 04:44:39,716 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 04:44:39,717 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 04:44:39,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 04:44:39,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 04:44:39,738 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 04:44:39,743 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 04:44:39,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 04:44:39,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 04:44:39,753 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 04:44:39,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 04:44:39,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 04:44:39,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 04:44:39,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 04:44:39,774 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 04:44:39,802 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 04:44:39,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 04:44:39,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 04:44:39,806 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 04:44:39,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 04:44:39,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 04:44:39,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 04:44:39,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 04:44:39,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 04:44:39,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 04:44:39,809 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 04:44:39,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 04:44:39,809 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 04:44:39,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 04:44:39,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 04:44:39,810 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 04:44:39,811 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 04:44:39,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 04:44:39,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 04:44:39,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 04:44:39,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 04:44:39,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 04:44:39,812 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 04:44:40,208 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 04:44:40,233 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 04:44:40,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 04:44:40,238 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 04:44:40,239 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 04:44:40,240 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032b.c [2020-11-07 04:44:40,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04c7349c8/71cc6a79c1a24d2ba4724de39ed98ffd/FLAG5ff7bfcd1 [2020-11-07 04:44:41,018 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 04:44:41,019 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032b.c [2020-11-07 04:44:41,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04c7349c8/71cc6a79c1a24d2ba4724de39ed98ffd/FLAG5ff7bfcd1 [2020-11-07 04:44:41,386 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/04c7349c8/71cc6a79c1a24d2ba4724de39ed98ffd [2020-11-07 04:44:41,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 04:44:41,397 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 04:44:41,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 04:44:41,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 04:44:41,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 04:44:41,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:44:41" (1/1) ... [2020-11-07 04:44:41,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e943c7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:41, skipping insertion in model container [2020-11-07 04:44:41,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:44:41" (1/1) ... [2020-11-07 04:44:41,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 04:44:41,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 04:44:41,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:44:41,636 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 04:44:41,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:44:41,690 INFO L208 MainTranslator]: Completed translation [2020-11-07 04:44:41,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:41 WrapperNode [2020-11-07 04:44:41,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 04:44:41,692 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 04:44:41,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 04:44:41,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 04:44:41,706 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:41" (1/1) ... [2020-11-07 04:44:41,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:41" (1/1) ... [2020-11-07 04:44:41,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:41" (1/1) ... [2020-11-07 04:44:41,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:41" (1/1) ... [2020-11-07 04:44:41,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:41" (1/1) ... [2020-11-07 04:44:41,736 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:41" (1/1) ... [2020-11-07 04:44:41,739 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:41" (1/1) ... [2020-11-07 04:44:41,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 04:44:41,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 04:44:41,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 04:44:41,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 04:44:41,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:41" (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 04:44:41,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 04:44:41,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 04:44:41,825 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 04:44:41,826 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-11-07 04:44:41,826 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-11-07 04:44:41,826 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-11-07 04:44:41,826 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 04:44:41,826 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 04:44:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 04:44:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 04:44:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 04:44:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-11-07 04:44:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-11-07 04:44:41,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-07 04:44:41,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 04:44:41,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 04:44:41,828 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 04:44:41,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-07 04:44:41,828 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-11-07 04:44:41,829 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 04:44:41,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 04:44:41,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 04:44:41,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 04:44:42,520 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 04:44:42,521 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-07 04:44:42,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:44:42 BoogieIcfgContainer [2020-11-07 04:44:42,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 04:44:42,525 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 04:44:42,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 04:44:42,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 04:44:42,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:44:41" (1/3) ... [2020-11-07 04:44:42,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a52919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:44:42, skipping insertion in model container [2020-11-07 04:44:42,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:44:41" (2/3) ... [2020-11-07 04:44:42,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23a52919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:44:42, skipping insertion in model container [2020-11-07 04:44:42,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:44:42" (3/3) ... [2020-11-07 04:44:42,532 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032b.c [2020-11-07 04:44:42,547 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 04:44:42,551 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 04:44:42,562 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 04:44:42,586 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 04:44:42,586 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 04:44:42,586 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 04:44:42,587 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 04:44:42,587 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 04:44:42,587 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 04:44:42,587 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 04:44:42,587 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 04:44:42,610 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states. [2020-11-07 04:44:42,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-07 04:44:42,621 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:44:42,622 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] [2020-11-07 04:44:42,622 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:44:42,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:44:42,629 INFO L82 PathProgramCache]: Analyzing trace with hash -1519777015, now seen corresponding path program 1 times [2020-11-07 04:44:42,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:44:42,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656259683] [2020-11-07 04:44:42,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:44:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:44:43,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:44:43,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:44:43,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 04:44:43,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:44:43,086 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 04:44:43,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656259683] [2020-11-07 04:44:43,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 04:44:43,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 04:44:43,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900814442] [2020-11-07 04:44:43,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 04:44:43,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:44:43,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 04:44:43,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 04:44:43,114 INFO L87 Difference]: Start difference. First operand 112 states. Second operand 4 states. [2020-11-07 04:44:43,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:44:43,671 INFO L93 Difference]: Finished difference Result 203 states and 235 transitions. [2020-11-07 04:44:43,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 04:44:43,673 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-11-07 04:44:43,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:44:43,684 INFO L225 Difference]: With dead ends: 203 [2020-11-07 04:44:43,684 INFO L226 Difference]: Without dead ends: 102 [2020-11-07 04:44:43,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 04:44:43,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-11-07 04:44:43,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-11-07 04:44:43,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-11-07 04:44:43,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 110 transitions. [2020-11-07 04:44:43,744 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 110 transitions. Word has length 35 [2020-11-07 04:44:43,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:44:43,745 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 110 transitions. [2020-11-07 04:44:43,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 04:44:43,745 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 110 transitions. [2020-11-07 04:44:43,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-07 04:44:43,748 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:44:43,748 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] [2020-11-07 04:44:43,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 04:44:43,755 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:44:43,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:44:43,756 INFO L82 PathProgramCache]: Analyzing trace with hash 57951711, now seen corresponding path program 1 times [2020-11-07 04:44:43,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:44:43,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32601481] [2020-11-07 04:44:43,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:44:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 04:44:43,809 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 04:44:43,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 04:44:43,884 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 04:44:43,939 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 04:44:43,939 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 04:44:43,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 04:44:43,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:44:43 BoogieIcfgContainer [2020-11-07 04:44:43,987 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 04:44:43,989 INFO L168 Benchmark]: Toolchain (without parser) took 2596.42 ms. Allocated memory is still 151.0 MB. Free memory was 127.6 MB in the beginning and 116.0 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.7 MB. Max. memory is 8.0 GB. [2020-11-07 04:44:43,990 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 04:44:43,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.56 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 116.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 04:44:43,992 INFO L168 Benchmark]: Boogie Preprocessor took 50.56 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 04:44:43,993 INFO L168 Benchmark]: RCFGBuilder took 780.05 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 123.1 MB in the end (delta: -9.0 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. [2020-11-07 04:44:43,994 INFO L168 Benchmark]: TraceAbstraction took 1462.24 ms. Allocated memory is still 151.0 MB. Free memory was 122.6 MB in the beginning and 116.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 8.0 GB. [2020-11-07 04:44:43,998 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 287.56 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 116.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 50.56 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.4 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 780.05 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 123.1 MB in the end (delta: -9.0 MB). Peak memory consumption was 19.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1462.24 ms. Allocated memory is still 151.0 MB. Free memory was 122.6 MB in the beginning and 116.0 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.6 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 someUnaryDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 92. Possible FailurePath: [L88] double x = -0.0; [L89] CALL, EXPR round_double(x) VAL [\old(x)=2146435086] [L20] __int32_t msw, exponent_less_1023; VAL [\old(x)=2146435086, x=2146435086] [L21] __uint32_t lsw; VAL [\old(x)=2146435086, x=2146435086] [L23] ieee_double_shape_type ew_u; VAL [\old(x)=2146435086, ew_u={3:0}, x=2146435086] [L24] ew_u.value = (x) VAL [\old(x)=2146435086, ew_u={3:0}, x=2146435086] [L25] EXPR ew_u.parts.msw VAL [\old(x)=2146435086, ew_u={3:0}, ew_u.parts.msw=0, x=2146435086] [L25] (msw) = ew_u.parts.msw VAL [(msw) = ew_u.parts.msw=2146435083, \old(x)=2146435086, ew_u={3:0}, ew_u.parts.msw=0, msw=0, x=2146435086] [L26] EXPR ew_u.parts.lsw VAL [\old(x)=2146435086, ew_u={3:0}, ew_u.parts.lsw=2146435079, msw=0, x=2146435086] [L26] (lsw) = ew_u.parts.lsw VAL [(lsw) = ew_u.parts.lsw=2146435085, \old(x)=2146435086, ew_u={3:0}, ew_u.parts.lsw=2146435079, lsw=2146435079, msw=0, x=2146435086] [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=2146435086, exponent_less_1023=1024, lsw=2146435079, msw=0, x=2146435086] [L29] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=2146435086, exponent_less_1023=1024, lsw=2146435079, msw=0, x=2146435086] [L43] COND TRUE exponent_less_1023 > 51 VAL [\old(x)=2146435086, exponent_less_1023=1024, lsw=2146435079, msw=0, x=2146435086] [L44] COND TRUE exponent_less_1023 == 1024 VAL [\old(x)=2146435086, exponent_less_1023=1024, lsw=2146435079, msw=0, x=2146435086] [L45] return x + x; VAL [\old(x)=2146435086, exponent_less_1023=1024, lsw=2146435079, msw=0, x=2146435086] [L89] RET, EXPR round_double(x) VAL [round_double(x)=2146435075, x=2146435086] [L89] double res = round_double(x); VAL [res=2146435075, round_double(x)=2146435075, x=2146435086] [L92] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=2146435075, res == -0.0 && __signbit_double(res) == 1=0, x=2146435086] [L92] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) VAL [res=2146435075, res == -0.0 && __signbit_double(res) == 1=0, x=2146435086] [L93] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1032b.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 116 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 114 SDtfs, 17 SDslu, 81 SDs, 0 SdLazy, 129 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred 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, 0.2s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 34 ConstructedInterpolants, 0 QuantifiedInterpolants, 2584 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...