/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1032c.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 21:57:53,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 21:57:53,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 21:57:53,165 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-06 21:57:53,199 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 21:57:53,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 21:57:53,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 21:57:53,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 21:57:53,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 21:57:53,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 21:57:53,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 21:57:53,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 21:57:53,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 21:57:53,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 21:57:53,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 21:57:53,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 21:57:53,269 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 21:57:53,284 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 21:57:53,286 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 21:57:53,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 21:57:53,288 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 21:57:53,349 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 21:57:53,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 21:57:53,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 21:57:53,354 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 21:57:53,354 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 21:57:53,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 21:57:53,355 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 21:57:53,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 21:57:53,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 21:57:53,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 21:57:53,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 21:57:53,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 21:57:53,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 21:57:53,358 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 21:57:53,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 21:57:53,359 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 21:57:53,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 21:57:53,359 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 21:57:53,359 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 21:57:53,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 21:57:53,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 21:57:53,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 21:57:53,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 21:57:53,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 21:57:53,361 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 21:57:53,362 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 21:57:53,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 21:57:53,362 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 21:57:53,362 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 21:57:53,363 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 21:57:53,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 21:57:53,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 21:57:53,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 21:57:53,852 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 21:57:53,853 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 21:57:53,854 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1032c.c [2020-11-06 21:57:53,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee488f399/8e40c57dfda94cbf882466216c4a70b5/FLAG1a9c45e75 [2020-11-06 21:57:54,524 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 21:57:54,525 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1032c.c [2020-11-06 21:57:54,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee488f399/8e40c57dfda94cbf882466216c4a70b5/FLAG1a9c45e75 [2020-11-06 21:57:54,885 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee488f399/8e40c57dfda94cbf882466216c4a70b5 [2020-11-06 21:57:54,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 21:57:54,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 21:57:54,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 21:57:54,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 21:57:54,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 21:57:54,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:54" (1/1) ... [2020-11-06 21:57:54,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bbc22c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:54, skipping insertion in model container [2020-11-06 21:57:54,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:54" (1/1) ... [2020-11-06 21:57:54,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 21:57:54,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 21:57:55,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:57:55,132 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 21:57:55,161 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:57:55,180 INFO L208 MainTranslator]: Completed translation [2020-11-06 21:57:55,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:55 WrapperNode [2020-11-06 21:57:55,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 21:57:55,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 21:57:55,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 21:57:55,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 21:57:55,197 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:55" (1/1) ... [2020-11-06 21:57:55,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:55" (1/1) ... [2020-11-06 21:57:55,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:55" (1/1) ... [2020-11-06 21:57:55,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:55" (1/1) ... [2020-11-06 21:57:55,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:55" (1/1) ... [2020-11-06 21:57:55,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:55" (1/1) ... [2020-11-06 21:57:55,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:55" (1/1) ... [2020-11-06 21:57:55,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 21:57:55,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 21:57:55,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 21:57:55,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 21:57:55,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:55" (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 [2020-11-06 21:57:55,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 21:57:55,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 21:57:55,321 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 21:57:55,321 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2020-11-06 21:57:55,321 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-11-06 21:57:55,321 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 21:57:55,322 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 21:57:55,322 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 21:57:55,322 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 21:57:55,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 21:57:55,322 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2020-11-06 21:57:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-06 21:57:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 21:57:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 21:57:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 21:57:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-06 21:57:55,323 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-11-06 21:57:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 21:57:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 21:57:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 21:57:55,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 21:57:55,798 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 21:57:55,799 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-06 21:57:55,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:55 BoogieIcfgContainer [2020-11-06 21:57:55,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 21:57:55,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 21:57:55,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 21:57:55,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 21:57:55,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:57:54" (1/3) ... [2020-11-06 21:57:55,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a7d3a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:55, skipping insertion in model container [2020-11-06 21:57:55,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:55" (2/3) ... [2020-11-06 21:57:55,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a7d3a6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:55, skipping insertion in model container [2020-11-06 21:57:55,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:55" (3/3) ... [2020-11-06 21:57:55,812 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032c.c [2020-11-06 21:57:55,836 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 21:57:55,841 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 21:57:55,858 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 21:57:55,889 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 21:57:55,889 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 21:57:55,889 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 21:57:55,889 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 21:57:55,889 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 21:57:55,890 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 21:57:55,890 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 21:57:55,890 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 21:57:55,911 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-11-06 21:57:55,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-06 21:57:55,918 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:57:55,919 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] [2020-11-06 21:57:55,919 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:57:55,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:57:55,926 INFO L82 PathProgramCache]: Analyzing trace with hash 370196138, now seen corresponding path program 1 times [2020-11-06 21:57:55,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:57:55,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390002475] [2020-11-06 21:57:55,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:57:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:56,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:57:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:56,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 21:57:56,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:56,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-06 21:57:56,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:56,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:57:56,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390002475] [2020-11-06 21:57:56,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 21:57:56,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 21:57:56,381 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268694219] [2020-11-06 21:57:56,387 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 21:57:56,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:57:56,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 21:57:56,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 21:57:56,408 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 4 states. [2020-11-06 21:57:56,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:57:56,761 INFO L93 Difference]: Finished difference Result 71 states and 95 transitions. [2020-11-06 21:57:56,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 21:57:56,763 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-11-06 21:57:56,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:57:56,773 INFO L225 Difference]: With dead ends: 71 [2020-11-06 21:57:56,773 INFO L226 Difference]: Without dead ends: 34 [2020-11-06 21:57:56,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-06 21:57:56,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-06 21:57:56,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-11-06 21:57:56,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-06 21:57:56,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-11-06 21:57:56,826 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 25 [2020-11-06 21:57:56,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:57:56,827 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-11-06 21:57:56,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 21:57:56,827 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-11-06 21:57:56,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-06 21:57:56,828 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:57:56,829 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] [2020-11-06 21:57:56,829 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 21:57:56,829 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:57:56,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:57:56,830 INFO L82 PathProgramCache]: Analyzing trace with hash -706779291, now seen corresponding path program 1 times [2020-11-06 21:57:56,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:57:56,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014074562] [2020-11-06 21:57:56,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:57:56,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:57:56,915 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:57:56,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:57:56,972 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:57:57,007 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 21:57:57,007 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 21:57:57,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 21:57:57,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:57:57 BoogieIcfgContainer [2020-11-06 21:57:57,082 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 21:57:57,087 INFO L168 Benchmark]: Toolchain (without parser) took 2189.71 ms. Allocated memory is still 151.0 MB. Free memory was 126.7 MB in the beginning and 79.2 MB in the end (delta: 47.5 MB). Peak memory consumption was 48.8 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:57,090 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 21:57:57,092 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.22 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:57,094 INFO L168 Benchmark]: Boogie Preprocessor took 49.48 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:57,095 INFO L168 Benchmark]: RCFGBuilder took 569.11 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 129.3 MB in the end (delta: -15.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:57,097 INFO L168 Benchmark]: TraceAbstraction took 1279.33 ms. Allocated memory is still 151.0 MB. Free memory was 129.0 MB in the beginning and 79.2 MB in the end (delta: 49.8 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:57,106 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 276.22 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.48 ms. Allocated memory is still 151.0 MB. Free memory was 116.0 MB in the beginning and 114.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 569.11 ms. Allocated memory is still 151.0 MB. Free memory was 114.1 MB in the beginning and 129.3 MB in the end (delta: -15.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1279.33 ms. Allocated memory is still 151.0 MB. Free memory was 129.0 MB in the beginning and 79.2 MB in the end (delta: 49.8 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 44, overapproximation of bitwiseAnd at line 64. Possible FailurePath: [L76] float x = 1.0f / 0.0f; [L77] CALL, EXPR round_float(x) VAL [\old(x)=2139095055] [L14] __uint32_t w; [L16] int exponent_less_127; VAL [\old(x)=2139095055, x=2139095055] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (w) = gf_u.word [L24] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=2139095055, exponent_less_127=128, w=2139095047, x=2139095055] [L26] COND FALSE !(exponent_less_127 < 23) VAL [\old(x)=2139095055, exponent_less_127=128, w=2139095047, x=2139095055] [L42] COND TRUE exponent_less_127 == 128 [L44] return x + x; VAL [\old(x)=2139095055, exponent_less_127=128, w=2139095047, x=2139095055] [L77] RET, EXPR round_float(x) VAL [round_float(x)=2139095043, x=2139095055] [L77] float res = round_float(x); [L80] CALL, EXPR isinf_float(res) VAL [\old(x)=2139095043] [L58] __int32_t ix; VAL [\old(x)=2139095043, x=2139095043] [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (ix) = gf_u.word [L64] ix &= 0x7fffffff [L65] return ((ix) == 0x7f800000L); VAL [\old(x)=2139095043, \result=0, ix=0, x=2139095043] [L80] RET, EXPR isinf_float(res) VAL [isinf_float(res)=0, res=2139095043, x=2139095055] [L80] COND TRUE !isinf_float(res) [L81] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1032c.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 8 SDslu, 32 SDs, 0 SdLazy, 37 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, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1872 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...