/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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:25:29,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:25:29,531 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:25:29,565 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:25:29,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:25:29,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:25:29,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:25:29,571 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:25:29,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:25:29,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:25:29,575 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:25:29,577 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:25:29,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:25:29,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:25:29,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:25:29,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:25:29,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:25:29,583 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:25:29,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:25:29,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:25:29,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:25:29,613 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:25:29,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:25:29,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:25:29,626 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:25:29,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:25:29,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:25:29,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:25:29,638 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 20:25:29,661 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:25:29,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:25:29,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:25:29,664 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:25:29,665 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:25:29,665 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:25:29,666 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:25:29,666 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:25:29,667 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:25:29,667 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:25:29,667 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:25:29,667 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:25:29,667 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:25:29,668 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:25:29,669 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:25:29,669 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:25:29,670 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:25:29,670 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:25:29,670 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:25:29,670 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:25:29,670 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:25:29,671 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:25:29,671 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:25:30,067 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:25:30,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:25:30,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:25:30,095 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:25:30,096 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:25:30,097 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-10-23 20:25:30,203 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02524a9f1/0974de0a780f4376a12efdf0d9232cae/FLAG95cd28cd6 [2020-10-23 20:25:30,867 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:25:30,868 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-10-23 20:25:30,877 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02524a9f1/0974de0a780f4376a12efdf0d9232cae/FLAG95cd28cd6 [2020-10-23 20:25:31,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02524a9f1/0974de0a780f4376a12efdf0d9232cae [2020-10-23 20:25:31,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:25:31,206 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:25:31,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:31,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:25:31,215 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:25:31,216 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:31" (1/1) ... [2020-10-23 20:25:31,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fa7f52d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:31, skipping insertion in model container [2020-10-23 20:25:31,221 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:31" (1/1) ... [2020-10-23 20:25:31,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:25:31,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:25:31,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:31,467 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:25:31,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:31,589 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:25:31,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:31 WrapperNode [2020-10-23 20:25:31,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:31,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:25:31,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:25:31,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:25:31,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:31" (1/1) ... [2020-10-23 20:25:31,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:31" (1/1) ... [2020-10-23 20:25:31,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:31" (1/1) ... [2020-10-23 20:25:31,625 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:31" (1/1) ... [2020-10-23 20:25:31,640 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:31" (1/1) ... [2020-10-23 20:25:31,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:31" (1/1) ... [2020-10-23 20:25:31,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:31" (1/1) ... [2020-10-23 20:25:31,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:25:31,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:25:31,657 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:25:31,657 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:25:31,658 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:31" (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 20:25:31,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:25:31,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:25:31,727 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:25:31,727 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-23 20:25:31,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-23 20:25:31,727 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:25:31,727 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:25:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:25:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:25:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:25:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-23 20:25:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-23 20:25:31,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 20:25:31,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:25:31,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:25:31,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 20:25:31,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:25:31,729 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-23 20:25:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:25:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:25:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:25:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-23 20:25:31,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:25:32,330 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:25:32,331 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-23 20:25:32,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:32 BoogieIcfgContainer [2020-10-23 20:25:32,336 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:25:32,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:25:32,339 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:25:32,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:25:32,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:25:31" (1/3) ... [2020-10-23 20:25:32,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@beb21b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:32, skipping insertion in model container [2020-10-23 20:25:32,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:31" (2/3) ... [2020-10-23 20:25:32,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@beb21b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:32, skipping insertion in model container [2020-10-23 20:25:32,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:32" (3/3) ... [2020-10-23 20:25:32,349 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-10-23 20:25:32,358 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:25:32,362 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:25:32,376 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:25:32,398 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:25:32,398 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:25:32,398 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:25:32,399 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:25:32,399 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:25:32,399 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:25:32,399 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:25:32,399 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:25:32,419 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-10-23 20:25:32,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-23 20:25:32,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:32,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:25:32,432 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:32,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:32,439 INFO L82 PathProgramCache]: Analyzing trace with hash 306928987, now seen corresponding path program 1 times [2020-10-23 20:25:32,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:32,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35603888] [2020-10-23 20:25:32,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:32,529 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:32,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:32,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:32,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-23 20:25:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:32,849 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 20:25:32,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35603888] [2020-10-23 20:25:32,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:32,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:25:32,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154724548] [2020-10-23 20:25:32,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:25:32,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:32,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:25:32,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:25:32,881 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 4 states. [2020-10-23 20:25:33,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:33,452 INFO L93 Difference]: Finished difference Result 317 states and 382 transitions. [2020-10-23 20:25:33,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:25:33,454 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-10-23 20:25:33,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:33,466 INFO L225 Difference]: With dead ends: 317 [2020-10-23 20:25:33,467 INFO L226 Difference]: Without dead ends: 164 [2020-10-23 20:25:33,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:25:33,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-23 20:25:33,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-10-23 20:25:33,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-23 20:25:33,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 180 transitions. [2020-10-23 20:25:33,539 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 180 transitions. Word has length 49 [2020-10-23 20:25:33,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:33,539 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 180 transitions. [2020-10-23 20:25:33,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:25:33,540 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 180 transitions. [2020-10-23 20:25:33,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-23 20:25:33,543 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:33,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:25:33,544 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:25:33,544 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:33,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:33,545 INFO L82 PathProgramCache]: Analyzing trace with hash -285900520, now seen corresponding path program 1 times [2020-10-23 20:25:33,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:33,545 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136593680] [2020-10-23 20:25:33,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:33,549 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:33,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:33,668 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:33,772 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:33,831 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:25:33,832 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:25:33,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:25:33,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:25:33 BoogieIcfgContainer [2020-10-23 20:25:33,853 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:25:33,856 INFO L168 Benchmark]: Toolchain (without parser) took 2653.51 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 108.4 MB in the beginning and 155.2 MB in the end (delta: -46.8 MB). Peak memory consumption was 57.8 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:33,857 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:25:33,858 INFO L168 Benchmark]: CACSL2BoogieTranslator took 387.92 ms. Allocated memory is still 151.0 MB. Free memory was 107.8 MB in the beginning and 134.4 MB in the end (delta: -26.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:33,859 INFO L168 Benchmark]: Boogie Preprocessor took 55.84 ms. Allocated memory is still 151.0 MB. Free memory was 134.4 MB in the beginning and 132.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:33,859 INFO L168 Benchmark]: RCFGBuilder took 679.65 ms. Allocated memory is still 151.0 MB. Free memory was 131.9 MB in the beginning and 95.6 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:33,860 INFO L168 Benchmark]: TraceAbstraction took 1514.83 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 95.2 MB in the beginning and 155.2 MB in the end (delta: -60.0 MB). Peak memory consumption was 44.8 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:33,864 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 387.92 ms. Allocated memory is still 151.0 MB. Free memory was 107.8 MB in the beginning and 134.4 MB in the end (delta: -26.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 55.84 ms. Allocated memory is still 151.0 MB. Free memory was 134.4 MB in the beginning and 132.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 679.65 ms. Allocated memory is still 151.0 MB. Free memory was 131.9 MB in the beginning and 95.6 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1514.83 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 95.2 MB in the beginning and 155.2 MB in the end (delta: -60.0 MB). Peak memory consumption was 44.8 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 someBinaryFLOATComparisonOperation at line 136, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 34, overapproximation of bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L128] float x = 0.0f; [L129] float y = __VERIFIER_nondet_float(); [L131] COND TRUE (y < 0.0f || y > 0.0f) [L133] CALL, EXPR fmod_float(x, y) [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); [L133] RET, EXPR fmod_float(x, y) [L133] float res = fmod_float(x, y); [L136] EXPR res == 0.0f && __signbit_float(res) == 0 [L136] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L137] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1130a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 174 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 185 SDtfs, 41 SDslu, 128 SDs, 0 SdLazy, 204 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred 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...