/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_1092c.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:25:27,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:25:27,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:25:27,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:25:27,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:25:27,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:25:27,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:25:27,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:25:27,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:25:27,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:25:27,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:25:27,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:25:27,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:25:27,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:25:27,222 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:25:27,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:25:27,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:25:27,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:25:27,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:25:27,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:25:27,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:25:27,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:25:27,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:25:27,243 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:25:27,248 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:25:27,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:25:27,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:25:27,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:25:27,270 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:25:27,307 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:25:27,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:25:27,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:25:27,313 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:25:27,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:25:27,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:25:27,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:25:27,313 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:25:27,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:25:27,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:25:27,315 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:25:27,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:25:27,315 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:25:27,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:25:27,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:25:27,316 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:25:27,316 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:25:27,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:25:27,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:25:27,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:25:27,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:25:27,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:25:27,317 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:25:27,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:25:27,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:25:27,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:25:27,761 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:25:27,762 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:25:27,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1092c.c [2020-10-23 20:25:27,845 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97bdf4913/82e98776c8d44f5caa3442e2beac9d5e/FLAG42274d219 [2020-10-23 20:25:28,419 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:25:28,419 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1092c.c [2020-10-23 20:25:28,428 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97bdf4913/82e98776c8d44f5caa3442e2beac9d5e/FLAG42274d219 [2020-10-23 20:25:28,767 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97bdf4913/82e98776c8d44f5caa3442e2beac9d5e [2020-10-23 20:25:28,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:25:28,779 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:25:28,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:28,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:25:28,786 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:25:28,787 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:28" (1/1) ... [2020-10-23 20:25:28,791 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@823e5af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:28, skipping insertion in model container [2020-10-23 20:25:28,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:28" (1/1) ... [2020-10-23 20:25:28,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:25:28,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:25:29,007 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:29,017 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:25:29,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:29,067 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:25:29,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:29 WrapperNode [2020-10-23 20:25:29,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:29,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:25:29,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:25:29,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:25:29,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:29" (1/1) ... [2020-10-23 20:25:29,084 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:29" (1/1) ... [2020-10-23 20:25:29,094 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:29" (1/1) ... [2020-10-23 20:25:29,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:29" (1/1) ... [2020-10-23 20:25:29,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:29" (1/1) ... [2020-10-23 20:25:29,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:29" (1/1) ... [2020-10-23 20:25:29,115 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:29" (1/1) ... [2020-10-23 20:25:29,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:25:29,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:25:29,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:25:29,120 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:25:29,121 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:25:29,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:25:29,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:25:29,202 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:25:29,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2020-10-23 20:25:29,203 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-10-23 20:25:29,203 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:25:29,203 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:25:29,203 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:25:29,203 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:25:29,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:25:29,204 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2020-10-23 20:25:29,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 20:25:29,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:25:29,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:25:29,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:25:29,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 20:25:29,205 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-10-23 20:25:29,205 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:25:29,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:25:29,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:25:29,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:25:29,787 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:25:29,787 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-23 20:25:29,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:29 BoogieIcfgContainer [2020-10-23 20:25:29,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:25:29,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:25:29,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:25:29,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:25:29,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:25:28" (1/3) ... [2020-10-23 20:25:29,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231b73b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:29, skipping insertion in model container [2020-10-23 20:25:29,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:29" (2/3) ... [2020-10-23 20:25:29,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231b73b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:29, skipping insertion in model container [2020-10-23 20:25:29,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:29" (3/3) ... [2020-10-23 20:25:29,809 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092c.c [2020-10-23 20:25:29,824 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:25:29,833 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:25:29,850 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:25:29,887 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:25:29,887 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:25:29,888 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:25:29,888 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:25:29,888 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:25:29,888 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:25:29,888 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:25:29,888 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:25:29,916 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states. [2020-10-23 20:25:29,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-23 20:25:29,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:29,935 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] [2020-10-23 20:25:29,936 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:29,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:29,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1576212510, now seen corresponding path program 1 times [2020-10-23 20:25:29,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:29,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1741474678] [2020-10-23 20:25:29,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:30,060 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:30,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:30,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:30,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 20:25:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:30,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-23 20:25:30,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:30,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:25:30,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1741474678] [2020-10-23 20:25:30,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:30,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:25:30,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645512149] [2020-10-23 20:25:30,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:25:30,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:30,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:25:30,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:25:30,542 INFO L87 Difference]: Start difference. First operand 96 states. Second operand 4 states. [2020-10-23 20:25:30,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:30,930 INFO L93 Difference]: Finished difference Result 169 states and 201 transitions. [2020-10-23 20:25:30,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:25:30,932 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-10-23 20:25:30,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:30,944 INFO L225 Difference]: With dead ends: 169 [2020-10-23 20:25:30,944 INFO L226 Difference]: Without dead ends: 87 [2020-10-23 20:25:30,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:25:30,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-23 20:25:31,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-23 20:25:31,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-23 20:25:31,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2020-10-23 20:25:31,011 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 43 [2020-10-23 20:25:31,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:31,011 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2020-10-23 20:25:31,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:25:31,012 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2020-10-23 20:25:31,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-23 20:25:31,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:31,015 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] [2020-10-23 20:25:31,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:25:31,015 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:31,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:31,016 INFO L82 PathProgramCache]: Analyzing trace with hash -2122551238, now seen corresponding path program 1 times [2020-10-23 20:25:31,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:31,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [169867483] [2020-10-23 20:25:31,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:31,020 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:31,107 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:31,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:25:31,167 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:25:31,204 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:25:31,204 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:25:31,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:25:31,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:25:31 BoogieIcfgContainer [2020-10-23 20:25:31,224 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:25:31,227 INFO L168 Benchmark]: Toolchain (without parser) took 2452.07 ms. Allocated memory is still 166.7 MB. Free memory was 143.6 MB in the beginning and 109.5 MB in the end (delta: 34.1 MB). Peak memory consumption was 35.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:31,228 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory was 103.5 MB in the beginning and 103.4 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:25:31,229 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.88 ms. Allocated memory is still 166.7 MB. Free memory was 142.9 MB in the beginning and 132.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:31,230 INFO L168 Benchmark]: Boogie Preprocessor took 49.16 ms. Allocated memory is still 166.7 MB. Free memory was 132.4 MB in the beginning and 130.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:31,231 INFO L168 Benchmark]: RCFGBuilder took 673.40 ms. Allocated memory is still 166.7 MB. Free memory was 130.5 MB in the beginning and 140.4 MB in the end (delta: -9.8 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:31,232 INFO L168 Benchmark]: TraceAbstraction took 1427.53 ms. Allocated memory is still 166.7 MB. Free memory was 140.0 MB in the beginning and 109.5 MB in the end (delta: 30.4 MB). Peak memory consumption was 31.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:31,235 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory was 103.5 MB in the beginning and 103.4 MB in the end (delta: 70.4 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 286.88 ms. Allocated memory is still 166.7 MB. Free memory was 142.9 MB in the beginning and 132.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.16 ms. Allocated memory is still 166.7 MB. Free memory was 132.4 MB in the beginning and 130.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 673.40 ms. Allocated memory is still 166.7 MB. Free memory was 130.5 MB in the beginning and 140.4 MB in the end (delta: -9.8 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1427.53 ms. Allocated memory is still 166.7 MB. Free memory was 140.0 MB in the beginning and 109.5 MB in the end (delta: 30.4 MB). Peak memory consumption was 31.4 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 someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 66. Possible FailurePath: [L13] static const float huge_ceil = 1.0e30; [L78] float x = 1.0f / 0.0f; [L79] CALL, EXPR ceil_float(x) [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f [L25] COND FALSE !(j0 < 23) [L45] COND TRUE !((ix) < 0x7f800000L) [L46] return x + x; [L79] RET, EXPR ceil_float(x) [L79] float res = ceil_float(x); [L82] CALL, EXPR isinf_float(res) [L60] __int32_t ix; [L62] ieee_float_shape_type gf_u; [L63] gf_u.value = (x) [L64] EXPR gf_u.word [L64] (ix) = gf_u.word [L66] ix &= 0x7fffffff [L67] return ((ix) == 0x7f800000L); [L82] RET, EXPR isinf_float(res) [L82] COND TRUE !isinf_float(res) [L83] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1092c.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 96 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 98 SDtfs, 19 SDslu, 67 SDs, 0 SdLazy, 109 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred 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...