/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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:13:25,573 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:13:25,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:13:25,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 13:13:25,626 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:13:25,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:13:25,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:13:25,630 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:13:25,644 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:13:25,645 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:13:25,648 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:13:25,651 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:13:25,653 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:13:25,655 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:13:25,656 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:13:25,658 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:13:25,661 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:13:25,673 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:13:25,674 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:13:25,675 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:13:25,676 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 [2021-02-23 13:13:25,704 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:13:25,704 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:13:25,706 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:13:25,706 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:13:25,707 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:13:25,707 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:13:25,707 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:13:25,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:13:25,708 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:13:25,708 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:13:25,708 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:13:25,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:13:25,709 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:13:25,709 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:13:25,709 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:13:25,710 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:13:25,710 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:13:25,710 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:13:25,711 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:13:25,711 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:13:25,711 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:13:25,712 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:13:25,712 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:13:25,712 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:13:25,712 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:13:25,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:13:25,713 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:13:25,713 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:13:25,713 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:13:26,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:13:26,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:13:26,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:13:26,182 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:13:26,187 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:13:26,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2021-02-23 13:13:26,287 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8e5b07be/391d34a4aca24d04a7d48df062e362ba/FLAG95cccc797 [2021-02-23 13:13:26,908 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:13:26,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2021-02-23 13:13:26,917 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8e5b07be/391d34a4aca24d04a7d48df062e362ba/FLAG95cccc797 [2021-02-23 13:13:27,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8e5b07be/391d34a4aca24d04a7d48df062e362ba [2021-02-23 13:13:27,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:13:27,280 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:13:27,282 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:13:27,282 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:13:27,287 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:13:27,288 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:13:27" (1/1) ... [2021-02-23 13:13:27,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ea3fee3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:27, skipping insertion in model container [2021-02-23 13:13:27,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:13:27" (1/1) ... [2021-02-23 13:13:27,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:13:27,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:13:27,538 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c[2907,2920] [2021-02-23 13:13:27,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:13:27,559 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:13:27,651 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c[2907,2920] [2021-02-23 13:13:27,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:13:27,686 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:13:27,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:27 WrapperNode [2021-02-23 13:13:27,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:13:27,690 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:13:27,692 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:13:27,692 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:13:27,708 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:27" (1/1) ... [2021-02-23 13:13:27,710 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:27" (1/1) ... [2021-02-23 13:13:27,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:27" (1/1) ... [2021-02-23 13:13:27,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:27" (1/1) ... [2021-02-23 13:13:27,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:27" (1/1) ... [2021-02-23 13:13:27,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:27" (1/1) ... [2021-02-23 13:13:27,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:27" (1/1) ... [2021-02-23 13:13:27,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:13:27,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:13:27,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:13:27,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:13:27,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:27" (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 [2021-02-23 13:13:27,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:13:27,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:13:27,956 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:13:27,957 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2021-02-23 13:13:27,957 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2021-02-23 13:13:27,957 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:13:27,957 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:13:27,958 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:13:27,958 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:13:27,959 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:13:27,959 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2021-02-23 13:13:27,959 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2021-02-23 13:13:27,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 13:13:27,960 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:13:27,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:13:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 13:13:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:13:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2021-02-23 13:13:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:13:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:13:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:13:27,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-23 13:13:27,963 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:13:28,625 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:13:28,626 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-02-23 13:13:28,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:13:28 BoogieIcfgContainer [2021-02-23 13:13:28,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:13:28,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:13:28,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:13:28,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:13:28,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:13:27" (1/3) ... [2021-02-23 13:13:28,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606c5e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:13:28, skipping insertion in model container [2021-02-23 13:13:28,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:27" (2/3) ... [2021-02-23 13:13:28,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@606c5e4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:13:28, skipping insertion in model container [2021-02-23 13:13:28,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:13:28" (3/3) ... [2021-02-23 13:13:28,641 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2021-02-23 13:13:28,653 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:13:28,661 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:13:28,684 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:13:28,730 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:13:28,731 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:13:28,731 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:13:28,731 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:13:28,731 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:13:28,731 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:13:28,732 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:13:28,732 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:13:28,758 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2021-02-23 13:13:28,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-02-23 13:13:28,766 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:13:28,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:13:28,767 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:13:28,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:13:28,776 INFO L82 PathProgramCache]: Analyzing trace with hash -684118545, now seen corresponding path program 1 times [2021-02-23 13:13:28,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:13:28,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477776045] [2021-02-23 13:13:28,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:13:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:29,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:29,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:29,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:29,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:29,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:13:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:29,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:29,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:29,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:13:29,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:29,169 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:29,170 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:29,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:29,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:29,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:13:29,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477776045] [2021-02-23 13:13:29,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:13:29,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 13:13:29,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422701509] [2021-02-23 13:13:29,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 13:13:29,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:13:29,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 13:13:29,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 13:13:29,204 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2021-02-23 13:13:29,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:13:29,510 INFO L93 Difference]: Finished difference Result 116 states and 180 transitions. [2021-02-23 13:13:29,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:13:29,512 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2021-02-23 13:13:29,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:13:29,525 INFO L225 Difference]: With dead ends: 116 [2021-02-23 13:13:29,526 INFO L226 Difference]: Without dead ends: 56 [2021-02-23 13:13:29,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:13:29,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-02-23 13:13:29,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-02-23 13:13:29,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2021-02-23 13:13:29,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2021-02-23 13:13:29,594 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2021-02-23 13:13:29,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:13:29,595 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2021-02-23 13:13:29,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 13:13:29,595 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2021-02-23 13:13:29,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-23 13:13:29,597 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:13:29,597 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] [2021-02-23 13:13:29,598 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:13:29,601 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:13:29,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:13:29,602 INFO L82 PathProgramCache]: Analyzing trace with hash -799690004, now seen corresponding path program 1 times [2021-02-23 13:13:29,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:13:29,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323850390] [2021-02-23 13:13:29,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:13:29,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:13:29,763 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:13:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:13:29,836 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:13:29,872 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:13:29,873 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:13:29,874 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:13:29,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:13:29 BoogieIcfgContainer [2021-02-23 13:13:29,921 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:13:29,924 INFO L168 Benchmark]: Toolchain (without parser) took 2652.68 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 50.2 MB in the end (delta: 76.2 MB). Peak memory consumption was 77.7 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:29,925 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:13:29,929 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.93 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 112.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:29,930 INFO L168 Benchmark]: Boogie Preprocessor took 127.62 ms. Allocated memory is still 151.0 MB. Free memory was 112.9 MB in the beginning and 110.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:29,932 INFO L168 Benchmark]: RCFGBuilder took 810.08 ms. Allocated memory is still 151.0 MB. Free memory was 110.8 MB in the beginning and 116.8 MB in the end (delta: -6.0 MB). Peak memory consumption was 13.7 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:29,933 INFO L168 Benchmark]: TraceAbstraction took 1288.73 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 50.2 MB in the end (delta: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:29,940 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 405.93 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 112.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 127.62 ms. Allocated memory is still 151.0 MB. Free memory was 112.9 MB in the beginning and 110.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 810.08 ms. Allocated memory is still 151.0 MB. Free memory was 110.8 MB in the beginning and 116.8 MB in the end (delta: -6.0 MB). Peak memory consumption was 13.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1288.73 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 50.2 MB in the end (delta: 66.1 MB). Peak memory consumption was 66.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 137]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 136, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 32, overapproximation of bitwiseXor at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=4294967308, \old(Zero_fmod)=4294967306, \old(Zero_fmod)=4294967300, one_fmod=1, Zero_fmod={9:0}] [L128] float x = 0.0f; [L129] float y = __VERIFIER_nondet_float(); [L131] COND TRUE (y < 0.0f || y > 0.0f) VAL [one_fmod=1, x=0, y=4294967307, Zero_fmod={9:0}] [L133] CALL, EXPR fmod_float(x, y) VAL [\old(x)=0, \old(y)=4294967307, one_fmod=1, Zero_fmod={9:0}] [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=0, \old(y)=4294967307, one_fmod=1, x=0, y=4294967307, Zero_fmod={9:0}] [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)=0, \old(y)=4294967307, one_fmod=1, sx=-1, x=0, y=4294967307, Zero_fmod={9:0}] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=4294967307, hx=2139095040, hy=0, one_fmod=1, sx=-1, x=0, y=4294967307, Zero_fmod={9:0}] [L133] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=4294967296, one_fmod=1, x=0, y=4294967307, Zero_fmod={9:0}] [L133] float res = fmod_float(x, y); [L136] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_fmod=1, res=4294967296, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=4294967307, Zero_fmod={9:0}] [L136] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L137] reach_error() VAL [one_fmod=1, res=4294967296, x=0, y=4294967307, Zero_fmod={9:0}] - 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: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 75 SDtfs, 14 SDslu, 61 SDs, 0 SdLazy, 80 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1242 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...