/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 00:32:46,114 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 00:32:46,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 00:32:46,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-24 00:32:46,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-24 00:32:46,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-24 00:32:46,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-24 00:32:46,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-24 00:32:46,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-24 00:32:46,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-24 00:32:46,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-24 00:32:46,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-24 00:32:46,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 00:32:46,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 00:32:46,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 00:32:46,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 00:32:46,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 00:32:46,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 00:32:46,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 00:32:46,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 00:32:46,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 00:32:46,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 00:32:46,229 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 00:32:46,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 00:32:46,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 00:32:46,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 00:32:46,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 00:32:46,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 00:32:46,255 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 00:32:46,276 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 00:32:46,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 00:32:46,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 00:32:46,281 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 00:32:46,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 00:32:46,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 00:32:46,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 00:32:46,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 00:32:46,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 00:32:46,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 00:32:46,284 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 00:32:46,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 00:32:46,284 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 00:32:46,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 00:32:46,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 00:32:46,285 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 00:32:46,285 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 00:32:46,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 00:32:46,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 00:32:46,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 00:32:46,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 00:32:46,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 00:32:46,286 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 00:32:46,657 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 00:32:46,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 00:32:46,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 00:32:46,694 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 00:32:46,694 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 00:32:46,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-10-24 00:32:46,778 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22da8a737/bea4e8ccffca448c85eebc0402de965a/FLAG5dc34e3e9 [2020-10-24 00:32:47,476 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 00:32:47,477 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-10-24 00:32:47,486 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22da8a737/bea4e8ccffca448c85eebc0402de965a/FLAG5dc34e3e9 [2020-10-24 00:32:47,823 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22da8a737/bea4e8ccffca448c85eebc0402de965a [2020-10-24 00:32:47,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 00:32:47,834 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 00:32:47,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 00:32:47,839 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 00:32:47,843 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 00:32:47,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:32:47" (1/1) ... [2020-10-24 00:32:47,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13f4621c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:47, skipping insertion in model container [2020-10-24 00:32:47,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:32:47" (1/1) ... [2020-10-24 00:32:47,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 00:32:47,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 00:32:48,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:32:48,136 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 00:32:48,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 00:32:48,212 INFO L208 MainTranslator]: Completed translation [2020-10-24 00:32:48,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:48 WrapperNode [2020-10-24 00:32:48,213 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 00:32:48,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 00:32:48,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 00:32:48,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 00:32:48,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:48" (1/1) ... [2020-10-24 00:32:48,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:48" (1/1) ... [2020-10-24 00:32:48,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:48" (1/1) ... [2020-10-24 00:32:48,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:48" (1/1) ... [2020-10-24 00:32:48,288 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:48" (1/1) ... [2020-10-24 00:32:48,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:48" (1/1) ... [2020-10-24 00:32:48,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:48" (1/1) ... [2020-10-24 00:32:48,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 00:32:48,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 00:32:48,319 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 00:32:48,319 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 00:32:48,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:48" (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 00:32:48,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 00:32:48,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 00:32:48,390 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 00:32:48,390 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-24 00:32:48,390 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-10-24 00:32:48,391 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-10-24 00:32:48,391 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 00:32:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 00:32:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 00:32:48,391 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 00:32:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 00:32:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-24 00:32:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-24 00:32:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-10-24 00:32:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-24 00:32:48,392 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 00:32:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 00:32:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-24 00:32:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 00:32:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-10-24 00:32:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 00:32:48,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 00:32:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 00:32:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-10-24 00:32:48,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 00:32:49,306 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 00:32:49,307 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-10-24 00:32:49,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:32:49 BoogieIcfgContainer [2020-10-24 00:32:49,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 00:32:49,311 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 00:32:49,312 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 00:32:49,315 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 00:32:49,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:32:47" (1/3) ... [2020-10-24 00:32:49,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d76118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:32:49, skipping insertion in model container [2020-10-24 00:32:49,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:32:48" (2/3) ... [2020-10-24 00:32:49,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d76118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:32:49, skipping insertion in model container [2020-10-24 00:32:49,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:32:49" (3/3) ... [2020-10-24 00:32:49,319 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-10-24 00:32:49,332 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 00:32:49,337 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 00:32:49,351 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 00:32:49,378 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 00:32:49,378 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 00:32:49,378 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 00:32:49,378 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 00:32:49,379 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 00:32:49,379 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 00:32:49,379 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 00:32:49,379 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 00:32:49,402 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states. [2020-10-24 00:32:49,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-24 00:32:49,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:32:49,416 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] [2020-10-24 00:32:49,417 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:32:49,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:32:49,423 INFO L82 PathProgramCache]: Analyzing trace with hash 874117461, now seen corresponding path program 1 times [2020-10-24 00:32:49,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:32:49,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496343393] [2020-10-24 00:32:49,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:32:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:32:49,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 00:32:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:32:49,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-24 00:32:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 00:32:49,829 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 00:32:49,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496343393] [2020-10-24 00:32:49,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 00:32:49,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 00:32:49,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780508387] [2020-10-24 00:32:49,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 00:32:49,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 00:32:49,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 00:32:49,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 00:32:49,856 INFO L87 Difference]: Start difference. First operand 229 states. Second operand 4 states. [2020-10-24 00:32:50,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 00:32:50,698 INFO L93 Difference]: Finished difference Result 424 states and 515 transitions. [2020-10-24 00:32:50,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 00:32:50,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-10-24 00:32:50,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 00:32:50,727 INFO L225 Difference]: With dead ends: 424 [2020-10-24 00:32:50,728 INFO L226 Difference]: Without dead ends: 219 [2020-10-24 00:32:50,733 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 00:32:50,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-24 00:32:50,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2020-10-24 00:32:50,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 219 states. [2020-10-24 00:32:50,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 246 transitions. [2020-10-24 00:32:50,811 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 246 transitions. Word has length 52 [2020-10-24 00:32:50,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 00:32:50,812 INFO L481 AbstractCegarLoop]: Abstraction has 219 states and 246 transitions. [2020-10-24 00:32:50,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 00:32:50,813 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 246 transitions. [2020-10-24 00:32:50,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-24 00:32:50,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 00:32:50,821 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-24 00:32:50,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 00:32:50,822 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 00:32:50,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 00:32:50,823 INFO L82 PathProgramCache]: Analyzing trace with hash 595290325, now seen corresponding path program 1 times [2020-10-24 00:32:50,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 00:32:50,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052887602] [2020-10-24 00:32:50,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 00:32:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 00:32:50,929 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 00:32:51,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-24 00:32:51,006 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-24 00:32:51,073 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-24 00:32:51,073 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-24 00:32:51,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 00:32:51,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:32:51 BoogieIcfgContainer [2020-10-24 00:32:51,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 00:32:51,159 INFO L168 Benchmark]: Toolchain (without parser) took 3329.49 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 126.8 MB in the beginning and 144.3 MB in the end (delta: -17.4 MB). Peak memory consumption was 18.8 MB. Max. memory is 8.0 GB. [2020-10-24 00:32:51,160 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 00:32:51,161 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.93 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 112.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-24 00:32:51,165 INFO L168 Benchmark]: Boogie Preprocessor took 99.81 ms. Allocated memory is still 151.0 MB. Free memory was 112.9 MB in the beginning and 110.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-24 00:32:51,166 INFO L168 Benchmark]: RCFGBuilder took 990.49 ms. Allocated memory is still 151.0 MB. Free memory was 110.2 MB in the beginning and 97.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 16.9 MB. Max. memory is 8.0 GB. [2020-10-24 00:32:51,167 INFO L168 Benchmark]: TraceAbstraction took 1845.09 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 97.9 MB in the beginning and 144.3 MB in the end (delta: -46.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 00:32:51,170 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 374.93 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 112.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 99.81 ms. Allocated memory is still 151.0 MB. Free memory was 112.9 MB in the beginning and 110.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 990.49 ms. Allocated memory is still 151.0 MB. Free memory was 110.2 MB in the beginning and 97.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 16.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1845.09 ms. Allocated memory was 151.0 MB in the beginning and 185.6 MB in the end (delta: 34.6 MB). Free memory was 97.9 MB in the beginning and 144.3 MB in the end (delta: -46.4 MB). There was no memory consumed. 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 bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of bitwiseAnd at line 43, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of someBinaryDOUBLEComparisonOperation at line 192, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=4294967317, \old(Zero_fmod)=4294967304, \old(Zero_fmod)=4294967314, one_fmod=1, Zero_fmod={9:0}] [L184] double x = 0.0; VAL [one_fmod=1, x=0, Zero_fmod={9:0}] [L185] double y = __VERIFIER_nondet_double(); VAL [__VERIFIER_nondet_double()=4294967300, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L187] COND TRUE y < 0.0 || y > 0.0 VAL [one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L189] CALL, EXPR fmod_double(x, y) VAL [\old(x)=0, \old(y)=4294967300, one_fmod=1, Zero_fmod={9:0}] [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=0, \old(y)=4294967300, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L27] __uint32_t lx, ly, lz; VAL [\old(x)=0, \old(y)=4294967300, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L30] ieee_double_shape_type ew_u; VAL [\old(x)=0, \old(y)=4294967300, ew_u={10:0}, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L31] ew_u.value = (x) VAL [\old(x)=0, \old(y)=4294967300, ew_u={10:0}, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L32] EXPR ew_u.parts.msw VAL [\old(x)=0, \old(y)=4294967300, ew_u={10:0}, ew_u.parts.msw=0, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L32] (hx) = ew_u.parts.msw VAL [(hx) = ew_u.parts.msw=4294967311, \old(x)=0, \old(y)=4294967300, ew_u={10:0}, ew_u.parts.msw=0, hx=0, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L33] EXPR ew_u.parts.lsw VAL [\old(x)=0, \old(y)=4294967300, ew_u={10:0}, ew_u.parts.lsw=4294967318, hx=0, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L33] (lx) = ew_u.parts.lsw VAL [\old(x)=0, \old(y)=4294967300, ew_u={10:0}, ew_u.parts.lsw=4294967318, hx=0, lx=4294967318, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L36] ieee_double_shape_type ew_u; VAL [\old(x)=0, \old(y)=4294967300, ew_u={3:0}, hx=0, lx=4294967318, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L37] ew_u.value = (y) VAL [\old(x)=0, \old(y)=4294967300, ew_u={3:0}, hx=0, lx=4294967318, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L38] EXPR ew_u.parts.msw VAL [\old(x)=0, \old(y)=4294967300, ew_u={3:0}, ew_u.parts.msw=0, hx=0, lx=4294967318, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L38] (hy) = ew_u.parts.msw VAL [(hy) = ew_u.parts.msw=4294967313, \old(x)=0, \old(y)=4294967300, ew_u={3:0}, ew_u.parts.msw=0, hx=0, hy=0, lx=4294967318, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L39] EXPR ew_u.parts.lsw VAL [\old(x)=0, \old(y)=4294967300, ew_u={3:0}, ew_u.parts.lsw=4294967315, hx=0, hy=0, lx=4294967318, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L39] (ly) = ew_u.parts.lsw VAL [(ly) = ew_u.parts.lsw=4294967308, \old(x)=0, \old(y)=4294967300, ew_u={3:0}, ew_u.parts.lsw=4294967315, hx=0, hy=0, lx=4294967318, ly=4294967315, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L41] sx = hx & 0x80000000 VAL [\old(x)=0, \old(y)=4294967300, hx=0, hy=0, lx=4294967318, ly=4294967315, one_fmod=1, sx=-1, x=0, y=4294967300, Zero_fmod={9:0}] [L42] hx ^= sx VAL [\old(x)=0, \old(y)=4294967300, hy=0, lx=4294967318, ly=4294967315, one_fmod=1, sx=-1, x=0, y=4294967300, Zero_fmod={9:0}] [L43] hy &= 0x7fffffff VAL [\old(x)=0, \old(y)=4294967300, lx=4294967318, ly=4294967315, one_fmod=1, sx=-1, x=0, y=4294967300, Zero_fmod={9:0}] [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) VAL [\old(x)=0, \old(y)=4294967300, hx=2146435072, lx=4294967318, ly=4294967315, one_fmod=1, sx=-1, x=0, y=4294967300, Zero_fmod={9:0}] [L47] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=4294967300, hx=2146435072, lx=4294967318, ly=4294967315, one_fmod=1, sx=-1, x=0, y=4294967300, Zero_fmod={9:0}] [L189] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=4294967305, one_fmod=1, x=0, y=4294967300, Zero_fmod={9:0}] [L189] double res = fmod_double(x, y); VAL [fmod_double(x, y)=4294967305, one_fmod=1, res=4294967305, x=0, y=4294967300, Zero_fmod={9:0}] [L192] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, res=4294967305, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=4294967300, Zero_fmod={9:0}] [L192] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) VAL [one_fmod=1, res=4294967305, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=4294967300, Zero_fmod={9:0}] [L193] CALL reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] [L3] __assert_fail("0", "double_req_bl_1130a.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 233 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 251 SDtfs, 47 SDslu, 183 SDs, 0 SdLazy, 275 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s 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=229occurred 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, 0.2s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 5202 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...