/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:24:54,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:24:54,563 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:24:54,600 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:24:54,600 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:24:54,602 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:24:54,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:24:54,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:24:54,608 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:24:54,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:24:54,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:24:54,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:24:54,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:24:54,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:24:54,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:24:54,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:24:54,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:24:54,618 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:24:54,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:24:54,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:24:54,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:24:54,643 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:24:54,645 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:24:54,645 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:24:54,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:24:54,669 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:24:54,670 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:24:54,671 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:24:54,672 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:24:54,693 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:24:54,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:24:54,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:24:54,699 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:24:54,699 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:24:54,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:24:54,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:24:54,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:24:54,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:24:54,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:24:54,701 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:24:54,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:24:54,701 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:24:54,701 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:24:54,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:24:54,702 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:24:54,702 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:24:54,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:24:54,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:24:54,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:24:54,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:24:54,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:24:54,703 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:24:55,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:24:55,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:24:55,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:24:55,170 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:24:55,170 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:24:55,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-10-23 20:24:55,258 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e4588c45/c068f0ab0bad4dfab3e1e3b93242e251/FLAG35dc6cbc3 [2020-10-23 20:24:55,919 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:24:55,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1091.c [2020-10-23 20:24:55,931 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e4588c45/c068f0ab0bad4dfab3e1e3b93242e251/FLAG35dc6cbc3 [2020-10-23 20:24:56,288 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e4588c45/c068f0ab0bad4dfab3e1e3b93242e251 [2020-10-23 20:24:56,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:24:56,300 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:24:56,302 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:24:56,302 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:24:56,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:24:56,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:24:56" (1/1) ... [2020-10-23 20:24:56,311 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34da1d99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:56, skipping insertion in model container [2020-10-23 20:24:56,311 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:24:56" (1/1) ... [2020-10-23 20:24:56,320 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:24:56,340 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:24:56,546 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:24:56,555 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:24:56,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:24:56,604 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:24:56,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:56 WrapperNode [2020-10-23 20:24:56,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:24:56,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:24:56,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:24:56,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:24:56,618 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:56" (1/1) ... [2020-10-23 20:24:56,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:56" (1/1) ... [2020-10-23 20:24:56,627 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:56" (1/1) ... [2020-10-23 20:24:56,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:56" (1/1) ... [2020-10-23 20:24:56,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:56" (1/1) ... [2020-10-23 20:24:56,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:56" (1/1) ... [2020-10-23 20:24:56,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:56" (1/1) ... [2020-10-23 20:24:56,651 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:24:56,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:24:56,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:24:56,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:24:56,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:56" (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 [2020-10-23 20:24:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:24:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:24:56,728 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:24:56,729 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-23 20:24:56,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-10-23 20:24:56,729 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:24:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:24:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:24:56,729 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:24:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:24:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-23 20:24:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-10-23 20:24:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 20:24:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:24:56,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:24:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:24:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 20:24:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:24:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:24:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:24:56,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:24:57,361 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:24:57,361 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-23 20:24:57,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:24:57 BoogieIcfgContainer [2020-10-23 20:24:57,364 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:24:57,366 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:24:57,366 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:24:57,370 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:24:57,370 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:24:56" (1/3) ... [2020-10-23 20:24:57,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c005cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:24:57, skipping insertion in model container [2020-10-23 20:24:57,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:24:56" (2/3) ... [2020-10-23 20:24:57,371 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49c005cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:24:57, skipping insertion in model container [2020-10-23 20:24:57,372 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:24:57" (3/3) ... [2020-10-23 20:24:57,373 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1091.c [2020-10-23 20:24:57,386 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:24:57,392 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:24:57,407 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:24:57,433 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:24:57,433 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:24:57,433 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:24:57,433 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:24:57,433 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:24:57,433 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:24:57,434 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:24:57,434 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:24:57,453 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states. [2020-10-23 20:24:57,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-23 20:24:57,465 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:24:57,466 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] [2020-10-23 20:24:57,466 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:24:57,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:24:57,473 INFO L82 PathProgramCache]: Analyzing trace with hash -848509734, now seen corresponding path program 1 times [2020-10-23 20:24:57,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:24:57,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866939830] [2020-10-23 20:24:57,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:24:57,578 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:24:57,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:57,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:24:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:57,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 20:24:57,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:57,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-23 20:24:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:24:57,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:24:57,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866939830] [2020-10-23 20:24:57,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:24:57,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:24:57,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945867062] [2020-10-23 20:24:57,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:24:57,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:24:57,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:24:57,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:24:57,841 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 4 states. [2020-10-23 20:24:58,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:24:58,329 INFO L93 Difference]: Finished difference Result 190 states and 229 transitions. [2020-10-23 20:24:58,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:24:58,331 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-10-23 20:24:58,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:24:58,345 INFO L225 Difference]: With dead ends: 190 [2020-10-23 20:24:58,345 INFO L226 Difference]: Without dead ends: 98 [2020-10-23 20:24:58,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:24:58,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-23 20:24:58,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-10-23 20:24:58,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-23 20:24:58,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 112 transitions. [2020-10-23 20:24:58,447 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 112 transitions. Word has length 41 [2020-10-23 20:24:58,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:24:58,448 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 112 transitions. [2020-10-23 20:24:58,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:24:58,449 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 112 transitions. [2020-10-23 20:24:58,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-23 20:24:58,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:24:58,454 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] [2020-10-23 20:24:58,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:24:58,454 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:24:58,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:24:58,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1883066652, now seen corresponding path program 1 times [2020-10-23 20:24:58,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:24:58,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28835066] [2020-10-23 20:24:58,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:24:58,465 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:24:58,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:24:58,566 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:24:58,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:24:58,610 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:24:58,660 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:24:58,660 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:24:58,662 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:24:58,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:24:58 BoogieIcfgContainer [2020-10-23 20:24:58,693 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:24:58,697 INFO L168 Benchmark]: Toolchain (without parser) took 2399.78 ms. Allocated memory was 154.1 MB in the beginning and 213.9 MB in the end (delta: 59.8 MB). Free memory was 129.9 MB in the beginning and 178.1 MB in the end (delta: -48.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:58,701 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 154.1 MB. Free memory is still 128.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:24:58,704 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.90 ms. Allocated memory is still 154.1 MB. Free memory was 129.4 MB in the beginning and 118.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:58,706 INFO L168 Benchmark]: Boogie Preprocessor took 45.51 ms. Allocated memory is still 154.1 MB. Free memory was 118.8 MB in the beginning and 117.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:58,707 INFO L168 Benchmark]: RCFGBuilder took 711.29 ms. Allocated memory is still 154.1 MB. Free memory was 117.0 MB in the beginning and 126.9 MB in the end (delta: -9.9 MB). Peak memory consumption was 21.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:58,709 INFO L168 Benchmark]: TraceAbstraction took 1327.33 ms. Allocated memory was 154.1 MB in the beginning and 213.9 MB in the end (delta: 59.8 MB). Free memory was 126.3 MB in the beginning and 178.1 MB in the end (delta: -51.8 MB). Peak memory consumption was 8.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:24:58,721 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 154.1 MB. Free memory is still 128.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 303.90 ms. Allocated memory is still 154.1 MB. Free memory was 129.4 MB in the beginning and 118.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.51 ms. Allocated memory is still 154.1 MB. Free memory was 118.8 MB in the beginning and 117.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 711.29 ms. Allocated memory is still 154.1 MB. Free memory was 117.0 MB in the beginning and 126.9 MB in the end (delta: -9.9 MB). Peak memory consumption was 21.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1327.33 ms. Allocated memory was 154.1 MB in the beginning and 213.9 MB in the end (delta: 59.8 MB). Free memory was 126.3 MB in the beginning and 178.1 MB in the end (delta: -51.8 MB). Peak memory consumption was 8.5 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 someBinaryDOUBLEComparisonOperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 92, overapproximation of bitwiseAnd at line 30. Possible FailurePath: [L19] static const double huge_ceil = 1.0e300; [L92] double x = 0.0 / 0.0; [L93] CALL, EXPR ceil_double(x) [L22] __int32_t i0, i1, j0; [L23] __uint32_t i, j; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (i0) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (i1) = ew_u.parts.lsw [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L31] COND FALSE !(j0 < 20) [L53] COND TRUE j0 > 51 [L54] COND FALSE !(j0 == 0x400) [L57] return x; [L93] RET, EXPR ceil_double(x) [L93] double res = ceil_double(x); [L96] CALL, EXPR isnan_double(res) [L17] return x != x; [L96] RET, EXPR isnan_double(res) [L96] COND TRUE !isnan_double(res) [L97] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1091.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 107 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 116 SDtfs, 23 SDslu, 81 SDs, 0 SdLazy, 124 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred 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: No data available, 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...