/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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 21:58:08,324 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 21:58:08,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 21:58:08,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 21:58:08,366 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 21:58:08,367 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 21:58:08,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 21:58:08,371 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 21:58:08,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 21:58:08,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 21:58:08,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 21:58:08,387 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 21:58:08,388 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 21:58:08,389 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 21:58:08,390 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 21:58:08,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 21:58:08,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 21:58:08,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 21:58:08,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 21:58:08,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 21:58:08,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 21:58:08,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 21:58:08,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 21:58:08,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 21:58:08,417 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 21:58:08,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 21:58:08,441 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 21:58:08,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 21:58:08,444 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 21:58:08,496 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 21:58:08,496 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 21:58:08,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 21:58:08,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 21:58:08,501 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 21:58:08,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 21:58:08,502 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 21:58:08,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 21:58:08,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 21:58:08,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 21:58:08,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 21:58:08,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 21:58:08,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 21:58:08,505 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 21:58:08,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 21:58:08,505 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 21:58:08,505 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 21:58:08,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 21:58:08,506 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 21:58:08,506 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 21:58:08,507 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 21:58:08,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 21:58:08,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 21:58:08,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 21:58:08,508 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 21:58:08,508 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 21:58:08,508 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 21:58:08,508 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 21:58:08,509 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 21:58:08,509 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 21:58:08,971 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 21:58:09,001 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 21:58:09,004 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 21:58:09,005 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 21:58:09,006 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 21:58:09,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-11-06 21:58:09,094 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/237c2027b/50b9e485ea8f4c08b26bbe803bfc7e18/FLAG9bd396276 [2020-11-06 21:58:09,660 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 21:58:09,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-11-06 21:58:09,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/237c2027b/50b9e485ea8f4c08b26bbe803bfc7e18/FLAG9bd396276 [2020-11-06 21:58:10,039 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/237c2027b/50b9e485ea8f4c08b26bbe803bfc7e18 [2020-11-06 21:58:10,043 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 21:58:10,052 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 21:58:10,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 21:58:10,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 21:58:10,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 21:58:10,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:10" (1/1) ... [2020-11-06 21:58:10,066 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@274f5357 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:10, skipping insertion in model container [2020-11-06 21:58:10,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:58:10" (1/1) ... [2020-11-06 21:58:10,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 21:58:10,111 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 21:58:10,358 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:58:10,367 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 21:58:10,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:58:10,486 INFO L208 MainTranslator]: Completed translation [2020-11-06 21:58:10,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:10 WrapperNode [2020-11-06 21:58:10,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 21:58:10,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 21:58:10,489 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 21:58:10,489 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 21:58:10,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:10" (1/1) ... [2020-11-06 21:58:10,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:10" (1/1) ... [2020-11-06 21:58:10,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:10" (1/1) ... [2020-11-06 21:58:10,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:10" (1/1) ... [2020-11-06 21:58:10,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:10" (1/1) ... [2020-11-06 21:58:10,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:10" (1/1) ... [2020-11-06 21:58:10,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:10" (1/1) ... [2020-11-06 21:58:10,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 21:58:10,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 21:58:10,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 21:58:10,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 21:58:10,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:10" (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 21:58:10,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 21:58:10,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 21:58:10,634 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 21:58:10,634 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-11-06 21:58:10,634 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-11-06 21:58:10,634 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 21:58:10,635 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 21:58:10,635 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 21:58:10,635 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 21:58:10,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 21:58:10,635 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-11-06 21:58:10,636 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-11-06 21:58:10,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-06 21:58:10,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 21:58:10,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 21:58:10,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-06 21:58:10,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 21:58:10,637 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-11-06 21:58:10,637 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 21:58:10,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 21:58:10,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 21:58:10,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-11-06 21:58:10,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 21:58:11,302 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 21:58:11,302 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-11-06 21:58:11,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:11 BoogieIcfgContainer [2020-11-06 21:58:11,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 21:58:11,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 21:58:11,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 21:58:11,310 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 21:58:11,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:58:10" (1/3) ... [2020-11-06 21:58:11,311 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c079ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:11, skipping insertion in model container [2020-11-06 21:58:11,311 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:58:10" (2/3) ... [2020-11-06 21:58:11,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c079ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:58:11, skipping insertion in model container [2020-11-06 21:58:11,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:58:11" (3/3) ... [2020-11-06 21:58:11,314 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-11-06 21:58:11,330 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 21:58:11,334 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 21:58:11,347 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 21:58:11,373 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 21:58:11,374 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 21:58:11,374 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 21:58:11,374 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 21:58:11,374 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 21:58:11,374 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 21:58:11,375 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 21:58:11,375 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 21:58:11,393 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-11-06 21:58:11,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-06 21:58:11,399 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:58:11,400 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] [2020-11-06 21:58:11,401 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:58:11,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:58:11,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1031583415, now seen corresponding path program 1 times [2020-11-06 21:58:11,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:58:11,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365932659] [2020-11-06 21:58:11,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:58:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:58:11,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:58:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:58:11,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 21:58:11,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:58:11,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-06 21:58:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:58:11,762 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 21:58:11,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365932659] [2020-11-06 21:58:11,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 21:58:11,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 21:58:11,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689701483] [2020-11-06 21:58:11,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 21:58:11,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:58:11,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 21:58:11,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 21:58:11,840 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 4 states. [2020-11-06 21:58:12,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:58:12,196 INFO L93 Difference]: Finished difference Result 117 states and 181 transitions. [2020-11-06 21:58:12,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 21:58:12,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-11-06 21:58:12,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:58:12,208 INFO L225 Difference]: With dead ends: 117 [2020-11-06 21:58:12,208 INFO L226 Difference]: Without dead ends: 56 [2020-11-06 21:58:12,212 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 [2020-11-06 21:58:12,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-06 21:58:12,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-11-06 21:58:12,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-11-06 21:58:12,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2020-11-06 21:58:12,260 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 71 transitions. Word has length 26 [2020-11-06 21:58:12,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:58:12,260 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 71 transitions. [2020-11-06 21:58:12,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 21:58:12,260 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2020-11-06 21:58:12,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-06 21:58:12,262 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:58:12,262 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] [2020-11-06 21:58:12,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 21:58:12,263 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:58:12,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:58:12,264 INFO L82 PathProgramCache]: Analyzing trace with hash -2101718248, now seen corresponding path program 1 times [2020-11-06 21:58:12,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:58:12,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659000114] [2020-11-06 21:58:12,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:58:12,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:58:12,368 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:58:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:58:12,488 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:58:12,528 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 21:58:12,529 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 21:58:12,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 21:58:12,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:58:12 BoogieIcfgContainer [2020-11-06 21:58:12,570 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 21:58:12,573 INFO L168 Benchmark]: Toolchain (without parser) took 2525.97 ms. Allocated memory is still 169.9 MB. Free memory was 143.7 MB in the beginning and 70.5 MB in the end (delta: 73.3 MB). Peak memory consumption was 73.5 MB. Max. memory is 8.0 GB. [2020-11-06 21:58:12,574 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 169.9 MB. Free memory is still 141.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 21:58:12,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 431.09 ms. Allocated memory is still 169.9 MB. Free memory was 143.2 MB in the beginning and 131.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-11-06 21:58:12,582 INFO L168 Benchmark]: Boogie Preprocessor took 63.94 ms. Allocated memory is still 169.9 MB. Free memory was 131.4 MB in the beginning and 129.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-06 21:58:12,583 INFO L168 Benchmark]: RCFGBuilder took 751.10 ms. Allocated memory is still 169.9 MB. Free memory was 129.2 MB in the beginning and 137.6 MB in the end (delta: -8.4 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. [2020-11-06 21:58:12,584 INFO L168 Benchmark]: TraceAbstraction took 1264.64 ms. Allocated memory is still 169.9 MB. Free memory was 137.6 MB in the beginning and 70.5 MB in the end (delta: 67.1 MB). Peak memory consumption was 67.1 MB. Max. memory is 8.0 GB. [2020-11-06 21:58:12,587 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 169.9 MB. Free memory is still 141.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 431.09 ms. Allocated memory is still 169.9 MB. Free memory was 143.2 MB in the beginning and 131.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 63.94 ms. Allocated memory is still 169.9 MB. Free memory was 131.4 MB in the beginning and 129.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 751.10 ms. Allocated memory is still 169.9 MB. Free memory was 129.2 MB in the beginning and 137.6 MB in the end (delta: -8.4 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1264.64 ms. Allocated memory is still 169.9 MB. Free memory was 137.6 MB in the beginning and 70.5 MB in the end (delta: 67.1 MB). Peak memory consumption was 67.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 136, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseXor at line 33. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=8589934610, \old(Zero_fmod)=8589934605, \old(Zero_fmod)=8589934596, one_fmod=1, Zero_fmod={5:0}] [L128] float x = __VERIFIER_nondet_float(); [L129] float y = -1.0f / 0.0f; VAL [one_fmod=1, x=8589934594, Zero_fmod={5:0}] [L131] CALL isfinite_float(x) VAL [\old(x)=8589934594, one_fmod=1, Zero_fmod={5:0}] [L111] __int32_t ix; VAL [\old(x)=8589934594, one_fmod=1, x=8589934594, Zero_fmod={5:0}] [L113] ieee_float_shape_type gf_u; [L114] gf_u.value = (x) [L115] EXPR gf_u.word [L115] (ix) = gf_u.word [L117] ix &= 0x7fffffff [L118] return (((ix) < 0x7f800000L)); VAL [\old(x)=8589934594, \result=1, ix=2139095039, one_fmod=1, x=8589934594, Zero_fmod={5:0}] [L131] RET isfinite_float(x) VAL [isfinite_float(x)=1, one_fmod=1, x=8589934594, Zero_fmod={5:0}] [L131] COND TRUE isfinite_float(x) [L133] CALL, EXPR fmod_float(x, y) VAL [\old(x)=8589934594, \old(y)=8589934593, one_fmod=1, Zero_fmod={5:0}] [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=8589934594, \old(y)=8589934593, one_fmod=1, x=8589934594, y=8589934593, Zero_fmod={5:0}] [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 VAL [\old(x)=8589934594, \old(y)=8589934593, one_fmod=1, sx=13, x=8589934594, y=8589934593, Zero_fmod={5:0}] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); VAL [\old(x)=8589934594, \old(y)=8589934593, hx=2139095040, hy=0, one_fmod=1, sx=13, x=8589934594, y=8589934593, Zero_fmod={5:0}] [L133] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=8589934607, one_fmod=1, x=8589934594, y=8589934593, Zero_fmod={5:0}] [L133] float res = fmod_float(x, y); [L136] COND TRUE res != x VAL [one_fmod=1, res=8589934607, x=8589934594, y=8589934593, Zero_fmod={5:0}] [L137] CALL reach_error() VAL [one_fmod=1, Zero_fmod={5:0}] [L3] __assert_fail("0", "float_req_bl_1131b.c", 3, "reach_error") VAL [one_fmod=1, Zero_fmod={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 74 SDtfs, 8 SDslu, 62 SDs, 0 SdLazy, 77 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=64occurred 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, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 2200 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...