/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_1072c.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 04:45:03,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 04:45:03,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 04:45:03,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 04:45:03,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 04:45:03,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 04:45:03,526 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 04:45:03,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 04:45:03,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 04:45:03,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 04:45:03,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 04:45:03,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 04:45:03,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 04:45:03,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 04:45:03,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 04:45:03,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 04:45:03,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 04:45:03,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 04:45:03,546 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 04:45:03,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 04:45:03,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 04:45:03,555 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 04:45:03,557 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 04:45:03,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 04:45:03,580 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 04:45:03,602 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 04:45:03,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 04:45:03,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 04:45:03,607 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 04:45:03,629 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 04:45:03,630 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 04:45:03,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 04:45:03,635 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 04:45:03,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 04:45:03,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 04:45:03,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 04:45:03,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 04:45:03,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 04:45:03,637 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 04:45:03,638 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 04:45:03,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 04:45:03,639 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 04:45:03,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 04:45:03,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 04:45:03,640 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 04:45:03,640 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 04:45:03,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 04:45:03,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 04:45:03,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 04:45:03,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 04:45:03,641 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 04:45:03,642 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 04:45:04,143 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 04:45:04,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 04:45:04,193 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 04:45:04,194 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 04:45:04,195 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 04:45:04,196 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072c.c [2020-11-07 04:45:04,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89701be74/343d3abbcafe4e2f8848c28314903ba5/FLAGbdfed5487 [2020-11-07 04:45:04,889 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 04:45:04,890 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1072c.c [2020-11-07 04:45:04,906 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89701be74/343d3abbcafe4e2f8848c28314903ba5/FLAGbdfed5487 [2020-11-07 04:45:05,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89701be74/343d3abbcafe4e2f8848c28314903ba5 [2020-11-07 04:45:05,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 04:45:05,275 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 04:45:05,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 04:45:05,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 04:45:05,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 04:45:05,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:45:05" (1/1) ... [2020-11-07 04:45:05,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54a31e09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:45:05, skipping insertion in model container [2020-11-07 04:45:05,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:45:05" (1/1) ... [2020-11-07 04:45:05,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 04:45:05,311 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 04:45:05,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:45:05,497 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 04:45:05,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 04:45:05,547 INFO L208 MainTranslator]: Completed translation [2020-11-07 04:45:05,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:45:05 WrapperNode [2020-11-07 04:45:05,548 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 04:45:05,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 04:45:05,549 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 04:45:05,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 04:45:05,562 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:45:05" (1/1) ... [2020-11-07 04:45:05,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:45:05" (1/1) ... [2020-11-07 04:45:05,573 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:45:05" (1/1) ... [2020-11-07 04:45:05,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:45:05" (1/1) ... [2020-11-07 04:45:05,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:45:05" (1/1) ... [2020-11-07 04:45:05,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:45:05" (1/1) ... [2020-11-07 04:45:05,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:45:05" (1/1) ... [2020-11-07 04:45:05,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 04:45:05,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 04:45:05,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 04:45:05,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 04:45:05,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:45:05" (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 04:45:05,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 04:45:05,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 04:45:05,687 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 04:45:05,688 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-11-07 04:45:05,688 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2020-11-07 04:45:05,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-11-07 04:45:05,688 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 04:45:05,688 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 04:45:05,689 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 04:45:05,689 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 04:45:05,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 04:45:05,689 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-11-07 04:45:05,689 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2020-11-07 04:45:05,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-07 04:45:05,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 04:45:05,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 04:45:05,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 04:45:05,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-07 04:45:05,691 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-11-07 04:45:05,691 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 04:45:05,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 04:45:05,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 04:45:05,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 04:45:06,353 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 04:45:06,354 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-07 04:45:06,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:45:06 BoogieIcfgContainer [2020-11-07 04:45:06,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 04:45:06,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 04:45:06,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 04:45:06,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 04:45:06,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:45:05" (1/3) ... [2020-11-07 04:45:06,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5685d4bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:45:06, skipping insertion in model container [2020-11-07 04:45:06,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:45:05" (2/3) ... [2020-11-07 04:45:06,363 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5685d4bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:45:06, skipping insertion in model container [2020-11-07 04:45:06,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:45:06" (3/3) ... [2020-11-07 04:45:06,365 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072c.c [2020-11-07 04:45:06,382 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 04:45:06,387 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 04:45:06,400 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 04:45:06,426 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 04:45:06,427 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 04:45:06,427 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 04:45:06,427 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 04:45:06,427 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 04:45:06,427 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 04:45:06,428 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 04:45:06,428 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 04:45:06,447 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-11-07 04:45:06,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-07 04:45:06,460 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:45:06,460 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] [2020-11-07 04:45:06,461 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:45:06,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:45:06,468 INFO L82 PathProgramCache]: Analyzing trace with hash -247968084, now seen corresponding path program 1 times [2020-11-07 04:45:06,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:45:06,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1762968368] [2020-11-07 04:45:06,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:45:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:45:06,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 04:45:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:45:06,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 04:45:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 04:45:06,766 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 04:45:06,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1762968368] [2020-11-07 04:45:06,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 04:45:06,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 04:45:06,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194157820] [2020-11-07 04:45:06,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 04:45:06,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 04:45:06,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 04:45:06,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 04:45:06,793 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 4 states. [2020-11-07 04:45:07,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 04:45:07,147 INFO L93 Difference]: Finished difference Result 214 states and 246 transitions. [2020-11-07 04:45:07,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 04:45:07,149 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-11-07 04:45:07,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 04:45:07,160 INFO L225 Difference]: With dead ends: 214 [2020-11-07 04:45:07,161 INFO L226 Difference]: Without dead ends: 108 [2020-11-07 04:45:07,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 04:45:07,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-07 04:45:07,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2020-11-07 04:45:07,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-11-07 04:45:07,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 112 transitions. [2020-11-07 04:45:07,225 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 112 transitions. Word has length 37 [2020-11-07 04:45:07,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 04:45:07,226 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 112 transitions. [2020-11-07 04:45:07,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 04:45:07,226 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 112 transitions. [2020-11-07 04:45:07,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-07 04:45:07,229 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 04:45:07,229 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] [2020-11-07 04:45:07,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 04:45:07,229 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 04:45:07,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 04:45:07,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1570660401, now seen corresponding path program 1 times [2020-11-07 04:45:07,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 04:45:07,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851316699] [2020-11-07 04:45:07,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 04:45:07,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 04:45:07,296 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 04:45:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 04:45:07,367 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 04:45:07,424 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 04:45:07,424 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 04:45:07,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 04:45:07,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:45:07 BoogieIcfgContainer [2020-11-07 04:45:07,476 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 04:45:07,479 INFO L168 Benchmark]: Toolchain (without parser) took 2207.37 ms. Allocated memory is still 151.0 MB. Free memory was 127.7 MB in the beginning and 59.7 MB in the end (delta: 68.1 MB). Peak memory consumption was 69.6 MB. Max. memory is 8.0 GB. [2020-11-07 04:45:07,479 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 125.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 04:45:07,480 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.46 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 116.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-07 04:45:07,481 INFO L168 Benchmark]: Boogie Preprocessor took 54.27 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 04:45:07,482 INFO L168 Benchmark]: RCFGBuilder took 752.13 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 133.1 MB in the end (delta: -18.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 8.0 GB. [2020-11-07 04:45:07,483 INFO L168 Benchmark]: TraceAbstraction took 1118.31 ms. Allocated memory is still 151.0 MB. Free memory was 132.6 MB in the beginning and 59.7 MB in the end (delta: 72.9 MB). Peak memory consumption was 73.4 MB. Max. memory is 8.0 GB. [2020-11-07 04:45:07,487 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 151.0 MB. Free memory is still 125.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 271.46 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 116.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 54.27 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 752.13 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 133.1 MB in the end (delta: -18.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1118.31 ms. Allocated memory is still 151.0 MB. Free memory was 132.6 MB in the beginning and 59.7 MB in the end (delta: 72.9 MB). Peak memory consumption was 73.4 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 83, overapproximation of bitwiseAnd at line 31, overapproximation of someBinaryArithmeticDOUBLEoperation at line 51, overapproximation of someBinaryDOUBLEComparisonOperation at line 87. Possible FailurePath: [L83] double x = -0.0; [L84] CALL, EXPR trunc_double(x) VAL [\old(x)=4294967299] [L20] int signbit; VAL [\old(x)=4294967299, x=4294967299] [L21] int msw; VAL [\old(x)=4294967299, x=4294967299] [L22] unsigned int lsw; VAL [\old(x)=4294967299, x=4294967299] [L23] int exponent_less_1023; VAL [\old(x)=4294967299, x=4294967299] [L25] ieee_double_shape_type ew_u; VAL [\old(x)=4294967299, ew_u={3:0}, x=4294967299] [L26] ew_u.value = (x) VAL [\old(x)=4294967299, ew_u={3:0}, x=4294967299] [L27] EXPR ew_u.parts.msw VAL [\old(x)=4294967299, ew_u={3:0}, ew_u.parts.msw=0, x=4294967299] [L27] (msw) = ew_u.parts.msw VAL [(msw) = ew_u.parts.msw=4294967309, \old(x)=4294967299, ew_u={3:0}, ew_u.parts.msw=0, msw=0, x=4294967299] [L28] EXPR ew_u.parts.lsw VAL [\old(x)=4294967299, ew_u={3:0}, ew_u.parts.lsw=4294967301, msw=0, x=4294967299] [L28] (lsw) = ew_u.parts.lsw VAL [\old(x)=4294967299, ew_u={3:0}, ew_u.parts.lsw=4294967301, lsw=5, msw=0, x=4294967299] [L30] signbit = msw & 0x80000000 VAL [\old(x)=4294967299, lsw=5, msw=0, signbit=-1, x=4294967299] [L31] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=4294967299, exponent_less_1023=1024, lsw=5, msw=0, signbit=-1, x=4294967299] [L32] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=4294967299, exponent_less_1023=1024, lsw=5, msw=0, signbit=-1, x=4294967299] [L49] COND TRUE exponent_less_1023 > 51 VAL [\old(x)=4294967299, exponent_less_1023=1024, lsw=5, msw=0, signbit=-1, x=4294967299] [L50] COND TRUE exponent_less_1023 == 1024 VAL [\old(x)=4294967299, exponent_less_1023=1024, lsw=5, msw=0, signbit=-1, x=4294967299] [L51] return x + x; VAL [\old(x)=4294967299, exponent_less_1023=1024, lsw=5, msw=0, signbit=-1, x=4294967299] [L84] RET, EXPR trunc_double(x) VAL [trunc_double(x)=4294967310, x=4294967299] [L84] double res = trunc_double(x); VAL [res=4294967310, trunc_double(x)=4294967310, x=4294967299] [L87] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=4294967310, res == -0.0 && __signbit_double(res) == 1=0, x=4294967299] [L87] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) VAL [res=4294967310, res == -0.0 && __signbit_double(res) == 1=0, x=4294967299] [L88] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1072c.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 122 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 116 SDtfs, 19 SDslu, 68 SDs, 0 SdLazy, 144 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=118occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 88 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 2808 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...