/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/float_req_bl_1032d.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:25:17,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:25:17,397 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:25:17,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:25:17,453 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:25:17,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:25:17,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:25:17,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:25:17,472 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:25:17,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:25:17,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:25:17,482 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:25:17,482 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:25:17,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:25:17,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:25:17,491 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:25:17,492 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:25:17,495 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:25:17,519 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:25:17,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:25:17,530 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:25:17,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:25:17,534 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:25:17,536 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:25:17,546 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:25:17,559 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:25:17,560 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:25:17,560 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:25:17,561 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 20:25:17,586 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:25:17,586 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:25:17,591 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:25:17,592 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:25:17,592 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:25:17,592 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:25:17,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:25:17,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:25:17,593 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:25:17,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:25:17,595 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:25:17,595 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:25:17,596 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:25:17,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:25:17,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:25:17,597 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:25:17,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:25:17,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:25:17,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:25:17,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:25:17,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:25:17,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:25:17,599 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:25:17,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:25:18,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:25:18,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:25:18,036 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:25:18,037 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:25:18,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1032d.c [2020-10-23 20:25:18,127 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d215f5dfe/52f1dc896164462d87aed0d84fc9d77e/FLAGa83f47f6a [2020-10-23 20:25:18,829 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:25:18,830 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1032d.c [2020-10-23 20:25:18,839 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d215f5dfe/52f1dc896164462d87aed0d84fc9d77e/FLAGa83f47f6a [2020-10-23 20:25:19,177 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d215f5dfe/52f1dc896164462d87aed0d84fc9d77e [2020-10-23 20:25:19,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:25:19,188 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:25:19,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:19,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:25:19,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:25:19,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:19" (1/1) ... [2020-10-23 20:25:19,204 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@336ab18d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:19, skipping insertion in model container [2020-10-23 20:25:19,204 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:19" (1/1) ... [2020-10-23 20:25:19,212 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:25:19,234 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:25:19,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:19,416 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:25:19,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:19,461 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:25:19,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:19 WrapperNode [2020-10-23 20:25:19,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:19,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:25:19,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:25:19,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:25:19,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:19" (1/1) ... [2020-10-23 20:25:19,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:19" (1/1) ... [2020-10-23 20:25:19,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:19" (1/1) ... [2020-10-23 20:25:19,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:19" (1/1) ... [2020-10-23 20:25:19,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:19" (1/1) ... [2020-10-23 20:25:19,504 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:19" (1/1) ... [2020-10-23 20:25:19,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:19" (1/1) ... [2020-10-23 20:25:19,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:25:19,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:25:19,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:25:19,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:25:19,512 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:19" (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 20:25:19,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:25:19,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:25:19,590 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:25:19,590 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2020-10-23 20:25:19,591 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-10-23 20:25:19,591 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:25:19,591 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:25:19,591 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:25:19,592 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:25:19,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:25:19,592 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2020-10-23 20:25:19,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 20:25:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:25:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:25:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:25:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 20:25:19,593 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-10-23 20:25:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:25:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:25:19,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:25:19,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:25:20,286 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:25:20,286 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-23 20:25:20,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:20 BoogieIcfgContainer [2020-10-23 20:25:20,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:25:20,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:25:20,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:25:20,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:25:20,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:25:19" (1/3) ... [2020-10-23 20:25:20,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6efaa653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:20, skipping insertion in model container [2020-10-23 20:25:20,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:19" (2/3) ... [2020-10-23 20:25:20,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6efaa653 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:20, skipping insertion in model container [2020-10-23 20:25:20,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:20" (3/3) ... [2020-10-23 20:25:20,297 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032d.c [2020-10-23 20:25:20,308 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:25:20,313 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:25:20,326 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:25:20,349 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:25:20,350 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:25:20,350 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:25:20,350 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:25:20,351 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:25:20,351 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:25:20,351 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:25:20,351 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:25:20,371 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-10-23 20:25:20,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-23 20:25:20,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:20,383 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] [2020-10-23 20:25:20,384 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:20,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:20,390 INFO L82 PathProgramCache]: Analyzing trace with hash -330644829, now seen corresponding path program 1 times [2020-10-23 20:25:20,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:20,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624628456] [2020-10-23 20:25:20,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:20,476 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:20,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:20,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 20:25:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:20,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:25:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:20,803 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 20:25:20,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624628456] [2020-10-23 20:25:20,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:20,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:25:20,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684818079] [2020-10-23 20:25:20,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:25:20,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:20,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:25:20,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:25:20,833 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-10-23 20:25:21,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:21,288 INFO L93 Difference]: Finished difference Result 156 states and 180 transitions. [2020-10-23 20:25:21,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:25:21,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-23 20:25:21,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:21,301 INFO L225 Difference]: With dead ends: 156 [2020-10-23 20:25:21,302 INFO L226 Difference]: Without dead ends: 79 [2020-10-23 20:25:21,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:25:21,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-23 20:25:21,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-23 20:25:21,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-23 20:25:21,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-23 20:25:21,406 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 39 [2020-10-23 20:25:21,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:21,407 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-23 20:25:21,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:25:21,408 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-23 20:25:21,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-23 20:25:21,413 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:21,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:25:21,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:25:21,414 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:21,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:21,415 INFO L82 PathProgramCache]: Analyzing trace with hash -1312099802, now seen corresponding path program 1 times [2020-10-23 20:25:21,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:21,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423161444] [2020-10-23 20:25:21,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:21,429 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:21,584 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:21,646 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:21,704 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:25:21,705 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:25:21,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:25:21,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:25:21 BoogieIcfgContainer [2020-10-23 20:25:21,733 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:25:21,741 INFO L168 Benchmark]: Toolchain (without parser) took 2551.29 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 126.5 MB in the beginning and 157.7 MB in the end (delta: -31.2 MB). Peak memory consumption was 15.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:21,741 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:25:21,744 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.00 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 115.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:21,746 INFO L168 Benchmark]: Boogie Preprocessor took 46.96 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 113.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:21,747 INFO L168 Benchmark]: RCFGBuilder took 777.69 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 126.3 MB in the end (delta: -12.4 MB). Peak memory consumption was 19.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:21,749 INFO L168 Benchmark]: TraceAbstraction took 1443.14 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 125.8 MB in the beginning and 157.7 MB in the end (delta: -31.9 MB). Peak memory consumption was 13.7 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:21,761 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 267.00 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 115.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.96 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 113.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 777.69 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 126.3 MB in the end (delta: -12.4 MB). Peak memory consumption was 19.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1443.14 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 125.8 MB in the beginning and 157.7 MB in the end (delta: -31.9 MB). Peak memory consumption was 13.7 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 someBinaryArithmeticFLOAToperation at line 44, overapproximation of bitwiseAnd at line 64. Possible FailurePath: [L75] float x = -1.0f / 0.0f; [L76] CALL, EXPR round_float(x) [L14] __uint32_t w; [L16] int exponent_less_127; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (w) = gf_u.word [L24] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 [L26] COND FALSE !(exponent_less_127 < 23) [L42] COND TRUE exponent_less_127 == 128 [L44] return x + x; [L76] RET, EXPR round_float(x) [L76] float res = round_float(x); [L79] CALL, EXPR isinf_float(res) [L58] __int32_t ix; [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (ix) = gf_u.word [L64] ix &= 0x7fffffff [L65] return ((ix) == 0x7f800000L); [L79] RET, EXPR isinf_float(res) [L79] COND TRUE !isinf_float(res) [L80] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1032d.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 86 SDtfs, 15 SDslu, 58 SDs, 0 SdLazy, 98 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=88occurred 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...