/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/double_req_bl_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:24:22,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:24:22,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:24:22,166 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 00:24:22,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:24:22,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:24:22,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:24:22,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:24:22,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:24:22,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:24:22,186 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:24:22,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:24:22,190 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:24:22,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:24:22,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:24:22,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:24:22,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 00:24:22,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:24:22,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:24:22,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:24:22,222 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 00:24:22,233 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:24:22,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:24:22,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:24:22,235 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:24:22,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:24:22,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:24:22,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:24:22,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:24:22,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:24:22,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:24:22,237 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:24:22,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:24:22,237 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:24:22,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:24:22,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:24:22,238 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:24:22,238 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:24:22,239 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:24:22,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:24:22,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:24:22,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:24:22,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:24:22,240 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:24:22,604 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:24:22,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:24:22,637 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:24:22,638 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:24:22,641 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:24:22,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-11-07 00:24:22,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c395c7d20/7228cfdd7b184632bf8d6b17d03aa590/FLAG6ca6c9058 [2020-11-07 00:24:23,435 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:24:23,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-11-07 00:24:23,449 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c395c7d20/7228cfdd7b184632bf8d6b17d03aa590/FLAG6ca6c9058 [2020-11-07 00:24:23,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c395c7d20/7228cfdd7b184632bf8d6b17d03aa590 [2020-11-07 00:24:23,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:24:23,735 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:24:23,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:24:23,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:24:23,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:24:23,742 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:24:23" (1/1) ... [2020-11-07 00:24:23,746 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2ef661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:23, skipping insertion in model container [2020-11-07 00:24:23,746 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:24:23" (1/1) ... [2020-11-07 00:24:23,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:24:23,796 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:24:24,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:24:24,040 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:24:24,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:24:24,184 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:24:24,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:24 WrapperNode [2020-11-07 00:24:24,185 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:24:24,186 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:24:24,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:24:24,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:24:24,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:24" (1/1) ... [2020-11-07 00:24:24,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:24" (1/1) ... [2020-11-07 00:24:24,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:24" (1/1) ... [2020-11-07 00:24:24,239 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:24" (1/1) ... [2020-11-07 00:24:24,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:24" (1/1) ... [2020-11-07 00:24:24,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:24" (1/1) ... [2020-11-07 00:24:24,305 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:24" (1/1) ... [2020-11-07 00:24:24,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:24:24,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:24:24,311 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:24:24,311 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:24:24,312 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:24:24,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:24:24,387 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:24:24,387 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:24:24,387 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-11-07 00:24:24,387 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-11-07 00:24:24,388 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-11-07 00:24:24,388 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:24:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:24:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:24:24,388 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:24:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:24:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-11-07 00:24:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-11-07 00:24:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-11-07 00:24:24,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-07 00:24:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:24:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:24:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-07 00:24:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:24:24,390 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-11-07 00:24:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:24:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:24:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:24:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-07 00:24:24,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:24:25,178 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:24:25,178 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-07 00:24:25,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:24:25 BoogieIcfgContainer [2020-11-07 00:24:25,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:24:25,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:24:25,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:24:25,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:24:25,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:24:23" (1/3) ... [2020-11-07 00:24:25,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1644a342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:24:25, skipping insertion in model container [2020-11-07 00:24:25,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:24:24" (2/3) ... [2020-11-07 00:24:25,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1644a342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:24:25, skipping insertion in model container [2020-11-07 00:24:25,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:24:25" (3/3) ... [2020-11-07 00:24:25,190 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-11-07 00:24:25,207 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:24:25,211 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:24:25,223 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:24:25,269 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:24:25,270 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:24:25,271 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:24:25,271 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:24:25,271 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:24:25,271 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:24:25,271 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:24:25,271 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:24:25,309 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-11-07 00:24:25,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-11-07 00:24:25,322 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:24:25,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:24:25,324 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:24:25,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:24:25,331 INFO L82 PathProgramCache]: Analyzing trace with hash 738853164, now seen corresponding path program 1 times [2020-11-07 00:24:25,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:24:25,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201810640] [2020-11-07 00:24:25,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:24:25,440 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:24:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:25,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:24:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:25,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-11-07 00:24:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:25,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 00:24:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:24:25,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 00:24:25,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201810640] [2020-11-07 00:24:25,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:24:25,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:24:25,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514587882] [2020-11-07 00:24:25,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:24:25,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:24:25,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:24:25,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:24:25,817 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 4 states. [2020-11-07 00:24:26,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:24:26,413 INFO L93 Difference]: Finished difference Result 423 states and 513 transitions. [2020-11-07 00:24:26,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:24:26,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-11-07 00:24:26,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:24:26,429 INFO L225 Difference]: With dead ends: 423 [2020-11-07 00:24:26,429 INFO L226 Difference]: Without dead ends: 215 [2020-11-07 00:24:26,435 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-07 00:24:26,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-11-07 00:24:26,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2020-11-07 00:24:26,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-11-07 00:24:26,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 241 transitions. [2020-11-07 00:24:26,506 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 241 transitions. Word has length 57 [2020-11-07 00:24:26,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:24:26,506 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 241 transitions. [2020-11-07 00:24:26,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:24:26,506 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 241 transitions. [2020-11-07 00:24:26,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-11-07 00:24:26,511 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:24:26,511 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 00:24:26,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:24:26,511 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:24:26,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:24:26,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1422621394, now seen corresponding path program 1 times [2020-11-07 00:24:26,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:24:26,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058552598] [2020-11-07 00:24:26,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:24:26,517 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:24:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:24:26,636 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:24:26,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:24:26,768 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:24:26,824 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:24:26,824 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:24:26,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:24:26,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:24:26 BoogieIcfgContainer [2020-11-07 00:24:26,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:24:26,849 INFO L168 Benchmark]: Toolchain (without parser) took 3121.39 ms. Allocated memory is still 156.2 MB. Free memory was 131.8 MB in the beginning and 85.2 MB in the end (delta: 46.6 MB). Peak memory consumption was 47.4 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:26,849 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 125.8 MB. Free memory is still 102.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:24:26,850 INFO L168 Benchmark]: CACSL2BoogieTranslator took 448.22 ms. Allocated memory is still 156.2 MB. Free memory was 131.3 MB in the beginning and 118.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:26,851 INFO L168 Benchmark]: Boogie Preprocessor took 123.39 ms. Allocated memory is still 156.2 MB. Free memory was 118.1 MB in the beginning and 115.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:26,852 INFO L168 Benchmark]: RCFGBuilder took 870.31 ms. Allocated memory is still 156.2 MB. Free memory was 115.4 MB in the beginning and 102.3 MB in the end (delta: 13.1 MB). Peak memory consumption was 14.6 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:26,853 INFO L168 Benchmark]: TraceAbstraction took 1663.61 ms. Allocated memory is still 156.2 MB. Free memory was 101.8 MB in the beginning and 85.2 MB in the end (delta: 16.6 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:24:26,856 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 125.8 MB. Free memory is still 102.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 448.22 ms. Allocated memory is still 156.2 MB. Free memory was 131.3 MB in the beginning and 118.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 123.39 ms. Allocated memory is still 156.2 MB. Free memory was 118.1 MB in the beginning and 115.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 870.31 ms. Allocated memory is still 156.2 MB. Free memory was 115.4 MB in the beginning and 102.3 MB in the end (delta: 13.1 MB). Peak memory consumption was 14.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1663.61 ms. Allocated memory is still 156.2 MB. Free memory was 101.8 MB in the beginning and 85.2 MB in the end (delta: 16.6 MB). Peak memory consumption was 17.1 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 bitwiseOr at line 46, overapproximation of someUnaryDOUBLEoperation at line 22, overapproximation of someBinaryArithmeticDOUBLEoperation at line 47, overapproximation of bitwiseAnd at line 43, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 42. Possible FailurePath: [L20-L23] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L182] double y = 1.0 / 0.0; [L183] double x = __VERIFIER_nondet_double(); [L185] CALL isfinite_double(x) [L166] __int32_t hx; [L168] ieee_double_shape_type gh_u; [L169] gh_u.value = (x) [L170] EXPR gh_u.parts.msw [L170] (hx) = gh_u.parts.msw [L172] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L185] RET isfinite_double(x) [L185] COND TRUE isfinite_double(x) [L187] CALL, EXPR fmod_double(x, y) [L26] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L27] __uint32_t lx, ly, lz; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (hx) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lx) = ew_u.parts.lsw [L36] ieee_double_shape_type ew_u; [L37] ew_u.value = (y) [L38] EXPR ew_u.parts.msw [L38] (hy) = ew_u.parts.msw [L39] EXPR ew_u.parts.lsw [L39] (ly) = ew_u.parts.lsw [L41] sx = hx & 0x80000000 [L42] hx ^= sx [L43] hy &= 0x7fffffff [L45-L46] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L47] return (x * y) / (x * y); [L187] RET, EXPR fmod_double(x, y) [L187] double res = fmod_double(x, y); [L190] COND TRUE res != x [L191] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1131a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 228 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 245 SDtfs, 39 SDslu, 181 SDs, 0 SdLazy, 269 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=224occurred 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...