/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/float_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 00:34:24,982 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 00:34:24,984 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 00:34:25,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 00:34:25,038 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 00:34:25,042 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 00:34:25,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 00:34:25,055 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 00:34:25,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 00:34:25,065 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 00:34:25,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 00:34:25,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 00:34:25,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 00:34:25,071 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 00:34:25,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 00:34:25,075 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 00:34:25,076 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 00:34:25,080 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 00:34:25,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 00:34:25,096 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 00:34:25,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 00:34:25,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 00:34:25,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 00:34:25,104 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 00:34:25,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 00:34:25,148 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 00:34:25,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 00:34:25,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 00:34:25,151 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 00:34:25,174 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 00:34:25,174 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 00:34:25,179 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 00:34:25,180 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 00:34:25,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 00:34:25,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 00:34:25,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 00:34:25,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 00:34:25,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 00:34:25,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 00:34:25,182 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 00:34:25,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 00:34:25,183 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 00:34:25,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 00:34:25,184 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 00:34:25,184 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 00:34:25,184 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 00:34:25,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 00:34:25,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 00:34:25,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 00:34:25,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 00:34:25,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 00:34:25,186 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 00:34:25,593 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 00:34:25,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 00:34:25,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 00:34:25,626 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 00:34:25,627 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 00:34:25,628 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-10-24 00:34:25,710 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23c1fe54a/b052a04aa30f4f389d1709d7eb27c917/FLAG05c31a4df [2020-10-24 00:34:26,328 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 00:34:26,329 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-10-24 00:34:26,337 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23c1fe54a/b052a04aa30f4f389d1709d7eb27c917/FLAG05c31a4df [2020-10-24 00:34:26,671 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23c1fe54a/b052a04aa30f4f389d1709d7eb27c917 [2020-10-24 00:34:26,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 00:34:26,684 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 00:34:26,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 00:34:26,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 00:34:26,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 00:34:26,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:34:26" (1/1) ... [2020-10-24 00:34:26,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41328b00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:26, skipping insertion in model container [2020-10-24 00:34:26,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:34:26" (1/1) ... [2020-10-24 00:34:26,708 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 00:34:26,745 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 00:34:26,943 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:34:26,953 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 00:34:27,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:34:27,055 INFO L208 MainTranslator]: Completed translation [2020-10-24 00:34:27,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:27 WrapperNode [2020-10-24 00:34:27,055 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 00:34:27,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 00:34:27,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 00:34:27,057 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 00:34:27,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:27" (1/1) ... [2020-10-24 00:34:27,073 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:27" (1/1) ... [2020-10-24 00:34:27,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:27" (1/1) ... [2020-10-24 00:34:27,103 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:27" (1/1) ... [2020-10-24 00:34:27,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:27" (1/1) ... [2020-10-24 00:34:27,159 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:27" (1/1) ... [2020-10-24 00:34:27,163 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:27" (1/1) ... [2020-10-24 00:34:27,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 00:34:27,174 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 00:34:27,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 00:34:27,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 00:34:27,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:27" (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 [2020-10-24 00:34:27,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 00:34:27,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 00:34:27,284 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 00:34:27,285 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-10-24 00:34:27,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-10-24 00:34:27,285 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 00:34:27,286 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 00:34:27,286 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 00:34:27,286 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 00:34:27,287 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 00:34:27,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-10-24 00:34:27,288 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-10-24 00:34:27,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 00:34:27,288 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 00:34:27,289 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 00:34:27,289 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 00:34:27,290 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 00:34:27,290 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-10-24 00:34:27,291 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 00:34:27,292 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 00:34:27,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 00:34:27,292 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-24 00:34:27,296 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 00:34:28,141 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 00:34:28,141 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-24 00:34:28,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:34:28 BoogieIcfgContainer [2020-10-24 00:34:28,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 00:34:28,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 00:34:28,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 00:34:28,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 00:34:28,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:34:26" (1/3) ... [2020-10-24 00:34:28,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@761fcfb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:34:28, skipping insertion in model container [2020-10-24 00:34:28,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:34:27" (2/3) ... [2020-10-24 00:34:28,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@761fcfb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:34:28, skipping insertion in model container [2020-10-24 00:34:28,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:34:28" (3/3) ... [2020-10-24 00:34:28,153 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-10-24 00:34:28,164 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 00:34:28,169 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 00:34:28,182 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 00:34:28,206 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 00:34:28,206 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 00:34:28,206 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 00:34:28,206 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 00:34:28,206 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 00:34:28,206 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 00:34:28,206 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 00:34:28,207 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 00:34:28,227 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-10-24 00:34:28,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-24 00:34:28,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:34:28,246 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] [2020-10-24 00:34:28,246 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:34:28,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:34:28,253 INFO L82 PathProgramCache]: Analyzing trace with hash 306928987, now seen corresponding path program 1 times [2020-10-24 00:34:28,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:34:28,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161413909] [2020-10-24 00:34:28,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:34:28,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:34:28,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:34:28,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:34:28,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-24 00:34:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:34:28,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 00:34:28,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161413909] [2020-10-24 00:34:28,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:34:28,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 00:34:28,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769661454] [2020-10-24 00:34:28,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 00:34:28,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:34:28,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 00:34:28,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 00:34:28,640 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 4 states. [2020-10-24 00:34:29,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:34:29,376 INFO L93 Difference]: Finished difference Result 317 states and 382 transitions. [2020-10-24 00:34:29,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 00:34:29,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-10-24 00:34:29,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:34:29,391 INFO L225 Difference]: With dead ends: 317 [2020-10-24 00:34:29,391 INFO L226 Difference]: Without dead ends: 164 [2020-10-24 00:34:29,396 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 [2020-10-24 00:34:29,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-24 00:34:29,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-10-24 00:34:29,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-24 00:34:29,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 180 transitions. [2020-10-24 00:34:29,460 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 180 transitions. Word has length 49 [2020-10-24 00:34:29,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:34:29,461 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 180 transitions. [2020-10-24 00:34:29,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 00:34:29,461 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 180 transitions. [2020-10-24 00:34:29,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-24 00:34:29,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:34:29,465 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] [2020-10-24 00:34:29,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 00:34:29,465 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:34:29,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:34:29,466 INFO L82 PathProgramCache]: Analyzing trace with hash -285900520, now seen corresponding path program 1 times [2020-10-24 00:34:29,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:34:29,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259412411] [2020-10-24 00:34:29,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:34:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 00:34:29,559 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 00:34:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 00:34:29,676 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 00:34:29,745 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-24 00:34:29,745 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 00:34:29,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 00:34:29,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:34:29 BoogieIcfgContainer [2020-10-24 00:34:29,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 00:34:29,826 INFO L168 Benchmark]: Toolchain (without parser) took 3146.62 ms. Allocated memory was 151.0 MB in the beginning and 200.3 MB in the end (delta: 49.3 MB). Free memory was 126.8 MB in the beginning and 145.7 MB in the end (delta: -18.9 MB). Peak memory consumption was 32.0 MB. Max. memory is 8.0 GB. [2020-10-24 00:34:29,827 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 126.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 00:34:29,830 INFO L168 Benchmark]: CACSL2BoogieTranslator took 365.66 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 113.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-24 00:34:29,834 INFO L168 Benchmark]: Boogie Preprocessor took 116.74 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 111.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-24 00:34:29,835 INFO L168 Benchmark]: RCFGBuilder took 969.68 ms. Allocated memory is still 151.0 MB. Free memory was 111.7 MB in the beginning and 130.8 MB in the end (delta: -19.1 MB). Peak memory consumption was 39.5 MB. Max. memory is 8.0 GB. [2020-10-24 00:34:29,838 INFO L168 Benchmark]: TraceAbstraction took 1676.08 ms. Allocated memory was 151.0 MB in the beginning and 200.3 MB in the end (delta: 49.3 MB). Free memory was 130.3 MB in the beginning and 145.7 MB in the end (delta: -15.4 MB). Peak memory consumption was 33.3 MB. Max. memory is 8.0 GB. [2020-10-24 00:34:29,844 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 126.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 365.66 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 113.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 116.74 ms. Allocated memory is still 151.0 MB. Free memory was 113.9 MB in the beginning and 111.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 969.68 ms. Allocated memory is still 151.0 MB. Free memory was 111.7 MB in the beginning and 130.8 MB in the end (delta: -19.1 MB). Peak memory consumption was 39.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1676.08 ms. Allocated memory was 151.0 MB in the beginning and 200.3 MB in the end (delta: 49.3 MB). Free memory was 130.3 MB in the beginning and 145.7 MB in the end (delta: -15.4 MB). Peak memory consumption was 33.3 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, }; VAL [\old(one_fmod)=8589934607, \old(Zero_fmod)=8589934605, \old(Zero_fmod)=8589934597, one_fmod=1, Zero_fmod={9:0}] [L128] float x = 0.0f; VAL [one_fmod=1, x=0, Zero_fmod={9:0}] [L129] float y = __VERIFIER_nondet_float(); VAL [__VERIFIER_nondet_float()=8589934595, one_fmod=1, x=0, y=8589934595, Zero_fmod={9:0}] [L131] COND TRUE (y < 0.0f || y > 0.0f) VAL [one_fmod=1, x=0, y=8589934595, Zero_fmod={9:0}] [L133] CALL, EXPR fmod_float(x, y) VAL [\old(x)=0, \old(y)=8589934595, one_fmod=1, Zero_fmod={9:0}] [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=0, \old(y)=8589934595, one_fmod=1, x=0, y=8589934595, Zero_fmod={9:0}] [L23] ieee_float_shape_type gf_u; VAL [\old(x)=0, \old(y)=8589934595, gf_u={10:0}, one_fmod=1, x=0, y=8589934595, Zero_fmod={9:0}] [L24] gf_u.value = (x) VAL [\old(x)=0, \old(y)=8589934595, gf_u={10:0}, one_fmod=1, x=0, y=8589934595, Zero_fmod={9:0}] [L25] EXPR gf_u.word VAL [\old(x)=0, \old(y)=8589934595, gf_u={10:0}, gf_u.word=8589934590, one_fmod=1, x=0, y=8589934595, Zero_fmod={9:0}] [L25] (hx) = gf_u.word VAL [\old(x)=0, \old(y)=8589934595, gf_u={10:0}, gf_u.word=8589934590, hx=-2, one_fmod=1, x=0, y=8589934595, Zero_fmod={9:0}] [L28] ieee_float_shape_type gf_u; VAL [\old(x)=0, \old(y)=8589934595, gf_u={3:0}, hx=-2, one_fmod=1, x=0, y=8589934595, Zero_fmod={9:0}] [L29] gf_u.value = (y) VAL [\old(x)=0, \old(y)=8589934595, gf_u={3:0}, hx=-2, one_fmod=1, x=0, y=8589934595, Zero_fmod={9:0}] [L30] EXPR gf_u.word VAL [\old(x)=0, \old(y)=8589934595, gf_u={3:0}, gf_u.word=4294967293, hx=-2, one_fmod=1, x=0, y=8589934595, Zero_fmod={9:0}] [L30] (hy) = gf_u.word VAL [\old(x)=0, \old(y)=8589934595, gf_u={3:0}, gf_u.word=4294967293, hx=-2, hy=-3, one_fmod=1, x=0, y=8589934595, Zero_fmod={9:0}] [L32] sx = hx & 0x80000000 VAL [\old(x)=0, \old(y)=8589934595, hx=-2, hy=-3, one_fmod=1, sx=-1, x=0, y=8589934595, Zero_fmod={9:0}] [L33] hx ^= sx VAL [\old(x)=0, \old(y)=8589934595, hy=-3, one_fmod=1, sx=-1, x=0, y=8589934595, Zero_fmod={9:0}] [L34] hy &= 0x7fffffff VAL [\old(x)=0, \old(y)=8589934595, one_fmod=1, sx=-1, x=0, y=8589934595, Zero_fmod={9:0}] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) VAL [\old(x)=0, \old(y)=8589934595, hx=2139095040, hy=0, one_fmod=1, sx=-1, x=0, y=8589934595, Zero_fmod={9:0}] [L37] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=8589934595, hx=2139095040, hy=0, one_fmod=1, sx=-1, x=0, y=8589934595, Zero_fmod={9:0}] [L133] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=8589934606, one_fmod=1, x=0, y=8589934595, Zero_fmod={9:0}] [L133] float res = fmod_float(x, y); VAL [fmod_float(x, y)=8589934606, one_fmod=1, res=8589934606, x=0, y=8589934595, Zero_fmod={9:0}] [L136] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_fmod=1, res=8589934606, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=8589934595, Zero_fmod={9:0}] [L136] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) VAL [one_fmod=1, res=8589934606, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=8589934595, Zero_fmod={9:0}] [L137] CALL reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] [L3] __assert_fail("0", "float_req_bl_1130a.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 174 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.7s, 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, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 4752 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...