/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 00:25:00,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 00:25:00,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 00:25:00,674 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 00:25:00,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 00:25:00,710 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 00:25:00,712 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 00:25:00,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 00:25:00,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 00:25:00,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 00:25:00,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 00:25:00,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 00:25:00,744 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 00:25:00,745 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 00:25:00,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 00:25:00,748 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 00:25:00,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 00:25:00,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 00:25:00,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 00:25:00,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 00:25:00,774 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 00:25:00,798 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 00:25:00,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 00:25:00,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 00:25:00,802 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 00:25:00,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 00:25:00,803 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 00:25:00,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 00:25:00,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 00:25:00,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 00:25:00,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 00:25:00,804 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 00:25:00,805 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 00:25:00,805 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 00:25:00,805 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 00:25:00,806 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 00:25:00,806 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 00:25:00,806 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 00:25:00,806 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 00:25:00,806 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 00:25:00,807 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 00:25:00,807 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 00:25:00,807 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 00:25:00,807 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 00:25:01,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 00:25:01,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 00:25:01,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 00:25:01,326 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 00:25:01,327 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 00:25:01,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-11-07 00:25:01,414 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e9cbd2b8/ce043fde5b3e497c91adf18d84ab65f5/FLAG924aa3691 [2020-11-07 00:25:02,045 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 00:25:02,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-11-07 00:25:02,058 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e9cbd2b8/ce043fde5b3e497c91adf18d84ab65f5/FLAG924aa3691 [2020-11-07 00:25:02,401 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e9cbd2b8/ce043fde5b3e497c91adf18d84ab65f5 [2020-11-07 00:25:02,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 00:25:02,410 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 00:25:02,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 00:25:02,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 00:25:02,417 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 00:25:02,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:25:02" (1/1) ... [2020-11-07 00:25:02,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2abacc19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:02, skipping insertion in model container [2020-11-07 00:25:02,422 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:25:02" (1/1) ... [2020-11-07 00:25:02,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 00:25:02,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 00:25:02,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:25:02,684 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 00:25:02,737 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 00:25:02,758 INFO L208 MainTranslator]: Completed translation [2020-11-07 00:25:02,758 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:02 WrapperNode [2020-11-07 00:25:02,758 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 00:25:02,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 00:25:02,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 00:25:02,760 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 00:25:02,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:02" (1/1) ... [2020-11-07 00:25:02,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:02" (1/1) ... [2020-11-07 00:25:02,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:02" (1/1) ... [2020-11-07 00:25:02,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:02" (1/1) ... [2020-11-07 00:25:02,803 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:02" (1/1) ... [2020-11-07 00:25:02,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:02" (1/1) ... [2020-11-07 00:25:02,815 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:02" (1/1) ... [2020-11-07 00:25:02,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 00:25:02,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 00:25:02,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 00:25:02,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 00:25:02,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:02" (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 00:25:02,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 00:25:02,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 00:25:02,917 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 00:25:02,917 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-11-07 00:25:02,917 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-11-07 00:25:02,917 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 00:25:02,917 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 00:25:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 00:25:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 00:25:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 00:25:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-11-07 00:25:02,918 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-11-07 00:25:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-07 00:25:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 00:25:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 00:25:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-07 00:25:02,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 00:25:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-11-07 00:25:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 00:25:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 00:25:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 00:25:02,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-07 00:25:02,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 00:25:03,908 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 00:25:03,908 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-07 00:25:03,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:25:03 BoogieIcfgContainer [2020-11-07 00:25:03,910 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 00:25:03,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 00:25:03,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 00:25:03,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 00:25:03,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:25:02" (1/3) ... [2020-11-07 00:25:03,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c96d2da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:25:03, skipping insertion in model container [2020-11-07 00:25:03,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:25:02" (2/3) ... [2020-11-07 00:25:03,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c96d2da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:25:03, skipping insertion in model container [2020-11-07 00:25:03,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:25:03" (3/3) ... [2020-11-07 00:25:03,920 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-11-07 00:25:03,936 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 00:25:03,940 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 00:25:03,953 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 00:25:03,979 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 00:25:03,979 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 00:25:03,979 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 00:25:03,979 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 00:25:03,979 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 00:25:03,979 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 00:25:03,980 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 00:25:03,980 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 00:25:04,000 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states. [2020-11-07 00:25:04,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-11-07 00:25:04,013 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:04,014 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] [2020-11-07 00:25:04,014 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:04,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:04,021 INFO L82 PathProgramCache]: Analyzing trace with hash 306928987, now seen corresponding path program 1 times [2020-11-07 00:25:04,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:04,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114383993] [2020-11-07 00:25:04,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:04,103 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:04,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:04,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 00:25:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:04,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-11-07 00:25:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 00:25:04,383 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 00:25:04,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114383993] [2020-11-07 00:25:04,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 00:25:04,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-07 00:25:04,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78591542] [2020-11-07 00:25:04,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-07 00:25:04,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 00:25:04,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-07 00:25:04,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-07 00:25:04,413 INFO L87 Difference]: Start difference. First operand 174 states. Second operand 4 states. [2020-11-07 00:25:05,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 00:25:05,225 INFO L93 Difference]: Finished difference Result 317 states and 382 transitions. [2020-11-07 00:25:05,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-07 00:25:05,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-11-07 00:25:05,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 00:25:05,242 INFO L225 Difference]: With dead ends: 317 [2020-11-07 00:25:05,242 INFO L226 Difference]: Without dead ends: 164 [2020-11-07 00:25:05,247 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 [2020-11-07 00:25:05,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-11-07 00:25:05,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-11-07 00:25:05,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-11-07 00:25:05,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 180 transitions. [2020-11-07 00:25:05,332 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 180 transitions. Word has length 49 [2020-11-07 00:25:05,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 00:25:05,333 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 180 transitions. [2020-11-07 00:25:05,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-07 00:25:05,334 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 180 transitions. [2020-11-07 00:25:05,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-11-07 00:25:05,337 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 00:25:05,338 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] [2020-11-07 00:25:05,338 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 00:25:05,339 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 00:25:05,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 00:25:05,340 INFO L82 PathProgramCache]: Analyzing trace with hash -285900520, now seen corresponding path program 1 times [2020-11-07 00:25:05,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 00:25:05,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939851674] [2020-11-07 00:25:05,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 00:25:05,345 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 00:25:05,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:25:05,482 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:25:05,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 00:25:05,595 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 00:25:05,676 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 00:25:05,676 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 00:25:05,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 00:25:05,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:25:05 BoogieIcfgContainer [2020-11-07 00:25:05,699 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 00:25:05,703 INFO L168 Benchmark]: Toolchain (without parser) took 3295.49 ms. Allocated memory was 157.3 MB in the beginning and 191.9 MB in the end (delta: 34.6 MB). Free memory was 134.5 MB in the beginning and 137.4 MB in the end (delta: -2.9 MB). Peak memory consumption was 33.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:25:05,703 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 157.3 MB. Free memory is still 130.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 00:25:05,704 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.63 ms. Allocated memory is still 157.3 MB. Free memory was 133.8 MB in the beginning and 121.6 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-11-07 00:25:05,705 INFO L168 Benchmark]: Boogie Preprocessor took 59.91 ms. Allocated memory is still 157.3 MB. Free memory was 121.6 MB in the beginning and 119.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 00:25:05,706 INFO L168 Benchmark]: RCFGBuilder took 1089.68 ms. Allocated memory is still 157.3 MB. Free memory was 119.3 MB in the beginning and 118.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. [2020-11-07 00:25:05,707 INFO L168 Benchmark]: TraceAbstraction took 1787.58 ms. Allocated memory was 157.3 MB in the beginning and 191.9 MB in the end (delta: 34.6 MB). Free memory was 117.6 MB in the beginning and 137.4 MB in the end (delta: -19.8 MB). Peak memory consumption was 15.4 MB. Max. memory is 8.0 GB. [2020-11-07 00:25:05,711 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 157.3 MB. Free memory is still 130.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 346.63 ms. Allocated memory is still 157.3 MB. Free memory was 133.8 MB in the beginning and 121.6 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 59.91 ms. Allocated memory is still 157.3 MB. Free memory was 121.6 MB in the beginning and 119.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1089.68 ms. Allocated memory is still 157.3 MB. Free memory was 119.3 MB in the beginning and 118.1 MB in the end (delta: 1.2 MB). Peak memory consumption was 17.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1787.58 ms. Allocated memory was 157.3 MB in the beginning and 191.9 MB in the end (delta: 34.6 MB). Free memory was 117.6 MB in the beginning and 137.4 MB in the end (delta: -19.8 MB). Peak memory consumption was 15.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 136, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 34, overapproximation of bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L128] float x = 0.0f; [L129] float y = __VERIFIER_nondet_float(); [L131] COND TRUE (y < 0.0f || y > 0.0f) [L133] CALL, EXPR fmod_float(x, y) [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 [L33] hx ^= sx [L34] hy &= 0x7fffffff [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); [L133] RET, EXPR fmod_float(x, y) [L133] float res = fmod_float(x, y); [L136] EXPR res == 0.0f && __signbit_float(res) == 0 [L136] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L137] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1130a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 174 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.8s, 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, 0.4s 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=174occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...