/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1011a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:55:06,984 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:55:06,987 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:55:07,028 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 03:55:07,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:55:07,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:55:07,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:55:07,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:55:07,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:55:07,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:55:07,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:55:07,077 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:55:07,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:55:07,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:55:07,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:55:07,087 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:55:07,090 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 03:55:07,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:55:07,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:55:07,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:55:07,115 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:55:07,137 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:55:07,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:55:07,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:55:07,143 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:55:07,143 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:55:07,143 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:55:07,143 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:55:07,144 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:55:07,144 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:55:07,144 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:55:07,145 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:55:07,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:55:07,146 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:55:07,146 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:55:07,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:55:07,147 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:55:07,147 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:55:07,147 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:55:07,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:55:07,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:55:07,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:55:07,148 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:55:07,148 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:55:07,148 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:55:07,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:55:07,568 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:55:07,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:55:07,573 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:55:07,574 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:55:07,575 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1011a.c [2021-02-24 03:55:07,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac7cb9962/8e86fd4213174641a6e28cc21b0f8fb8/FLAG93da3da27 [2021-02-24 03:55:08,299 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:55:08,300 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1011a.c [2021-02-24 03:55:08,309 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac7cb9962/8e86fd4213174641a6e28cc21b0f8fb8/FLAG93da3da27 [2021-02-24 03:55:08,672 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac7cb9962/8e86fd4213174641a6e28cc21b0f8fb8 [2021-02-24 03:55:08,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:55:08,691 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:55:08,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:55:08,698 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:55:08,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:55:08,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:55:08" (1/1) ... [2021-02-24 03:55:08,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59a7426c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:08, skipping insertion in model container [2021-02-24 03:55:08,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:55:08" (1/1) ... [2021-02-24 03:55:08,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:55:08,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:55:09,006 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/double_req_bl_1011a.c[1210,1223] [2021-02-24 03:55:09,016 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:55:09,029 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:55:09,074 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/double_req_bl_1011a.c[1210,1223] [2021-02-24 03:55:09,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:55:09,102 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:55:09,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:09 WrapperNode [2021-02-24 03:55:09,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:55:09,104 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:55:09,105 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:55:09,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:55:09,123 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:09" (1/1) ... [2021-02-24 03:55:09,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:09" (1/1) ... [2021-02-24 03:55:09,139 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:09" (1/1) ... [2021-02-24 03:55:09,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:09" (1/1) ... [2021-02-24 03:55:09,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:09" (1/1) ... [2021-02-24 03:55:09,176 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:09" (1/1) ... [2021-02-24 03:55:09,189 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:09" (1/1) ... [2021-02-24 03:55:09,194 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:55:09,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:55:09,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:55:09,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:55:09,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:09" (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 [2021-02-24 03:55:09,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:55:09,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:55:09,308 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:55:09,308 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-24 03:55:09,308 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2021-02-24 03:55:09,309 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:55:09,309 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:55:09,309 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:55:09,309 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:55:09,309 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:55:09,310 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-24 03:55:09,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-24 03:55:09,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:55:09,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:55:09,310 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2021-02-24 03:55:09,310 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:55:09,311 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-24 03:55:09,311 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:55:09,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:55:09,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:55:09,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:55:09,903 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:55:09,903 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-24 03:55:09,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:55:09 BoogieIcfgContainer [2021-02-24 03:55:09,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:55:09,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:55:09,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:55:09,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:55:09,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:55:08" (1/3) ... [2021-02-24 03:55:09,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dade68d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:55:09, skipping insertion in model container [2021-02-24 03:55:09,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:55:09" (2/3) ... [2021-02-24 03:55:09,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dade68d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:55:09, skipping insertion in model container [2021-02-24 03:55:09,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:55:09" (3/3) ... [2021-02-24 03:55:09,919 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1011a.c [2021-02-24 03:55:09,928 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:55:09,936 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:55:09,958 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:55:10,000 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:55:10,001 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:55:10,001 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:55:10,001 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:55:10,001 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:55:10,001 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:55:10,001 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:55:10,002 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:55:10,025 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2021-02-24 03:55:10,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-02-24 03:55:10,038 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:55:10,039 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] [2021-02-24 03:55:10,039 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:55:10,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:55:10,049 INFO L82 PathProgramCache]: Analyzing trace with hash 240757498, now seen corresponding path program 1 times [2021-02-24 03:55:10,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:55:10,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626246291] [2021-02-24 03:55:10,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:55:10,157 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:55:10,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:10,364 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:10,366 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:10,368 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:10,369 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:10,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:55:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:10,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:10,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:10,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-24 03:55:10,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:55:10,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:10,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:10,459 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:55:10,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:55:10,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:55:10,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626246291] [2021-02-24 03:55:10,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:55:10,471 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-24 03:55:10,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746491965] [2021-02-24 03:55:10,476 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-24 03:55:10,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:55:10,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-24 03:55:10,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-24 03:55:10,495 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 4 states. [2021-02-24 03:55:10,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:55:10,774 INFO L93 Difference]: Finished difference Result 121 states and 136 transitions. [2021-02-24 03:55:10,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-24 03:55:10,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2021-02-24 03:55:10,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:55:10,789 INFO L225 Difference]: With dead ends: 121 [2021-02-24 03:55:10,789 INFO L226 Difference]: Without dead ends: 61 [2021-02-24 03:55:10,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:55:10,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-24 03:55:10,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2021-02-24 03:55:10,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2021-02-24 03:55:10,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2021-02-24 03:55:10,849 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 29 [2021-02-24 03:55:10,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:55:10,849 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2021-02-24 03:55:10,849 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-24 03:55:10,849 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2021-02-24 03:55:10,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-24 03:55:10,851 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:55:10,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 03:55:10,852 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:55:10,852 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:55:10,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:55:10,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1317132015, now seen corresponding path program 1 times [2021-02-24 03:55:10,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:55:10,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493215096] [2021-02-24 03:55:10,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:55:10,857 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:55:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:55:10,948 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:55:10,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 03:55:10,983 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 03:55:11,021 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 03:55:11,022 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 03:55:11,023 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:55:11,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:55:11 BoogieIcfgContainer [2021-02-24 03:55:11,042 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:55:11,045 INFO L168 Benchmark]: Toolchain (without parser) took 2364.80 ms. Allocated memory was 169.9 MB in the beginning and 206.6 MB in the end (delta: 36.7 MB). Free memory was 145.8 MB in the beginning and 181.1 MB in the end (delta: -35.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:11,046 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 169.9 MB. Free memory was 142.9 MB in the beginning and 142.8 MB in the end (delta: 100.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:55:11,047 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.64 ms. Allocated memory is still 169.9 MB. Free memory was 144.8 MB in the beginning and 134.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:11,048 INFO L168 Benchmark]: Boogie Preprocessor took 90.39 ms. Allocated memory is still 169.9 MB. Free memory was 134.7 MB in the beginning and 133.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:11,049 INFO L168 Benchmark]: RCFGBuilder took 710.06 ms. Allocated memory is still 169.9 MB. Free memory was 133.1 MB in the beginning and 148.4 MB in the end (delta: -15.3 MB). Peak memory consumption was 20.1 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:11,050 INFO L168 Benchmark]: TraceAbstraction took 1132.94 ms. Allocated memory was 169.9 MB in the beginning and 206.6 MB in the end (delta: 36.7 MB). Free memory was 147.9 MB in the beginning and 181.1 MB in the end (delta: -33.2 MB). Peak memory consumption was 4.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:55:11,054 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 169.9 MB. Free memory was 142.9 MB in the beginning and 142.8 MB in the end (delta: 100.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 405.64 ms. Allocated memory is still 169.9 MB. Free memory was 144.8 MB in the beginning and 134.7 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 90.39 ms. Allocated memory is still 169.9 MB. Free memory was 134.7 MB in the beginning and 133.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 710.06 ms. Allocated memory is still 169.9 MB. Free memory was 133.1 MB in the beginning and 148.4 MB in the end (delta: -15.3 MB). Peak memory consumption was 20.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1132.94 ms. Allocated memory was 169.9 MB in the beginning and 206.6 MB in the end (delta: 36.7 MB). Free memory was 147.9 MB in the beginning and 181.1 MB in the end (delta: -33.2 MB). Peak memory consumption was 4.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 54]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 53, overapproximation of bitwiseAnd at line 37. Possible FailurePath: [L49] double x = 0.0; [L50] CALL, EXPR fabs_double(x) [L28] __uint32_t high; [L30] ieee_double_shape_type gh_u; [L31] gh_u.value = (x) [L32] EXPR gh_u.parts.msw [L32] (high) = gh_u.parts.msw [L35] ieee_double_shape_type sh_u; [L36] sh_u.value = (x) [L37] sh_u.parts.msw = (high & 0x7fffffff) [L38] EXPR sh_u.value [L38] (x) = sh_u.value [L40] return x; [L50] RET, EXPR fabs_double(x) [L50] double res = fabs_double(x); [L53] EXPR res == 0.0 && __signbit_double(res) == 0 [L53] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L54] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 72 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 65 SDtfs, 11 SDslu, 42 SDs, 0 SdLazy, 78 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...