/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 17:37:20,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 17:37:20,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 17:37:20,054 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 17:37:20,068 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 17:37:20,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 17:37:20,071 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 17:37:20,073 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 17:37:20,074 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 17:37:20,087 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 17:37:20,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 17:37:20,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 17:37:20,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 17:37:20,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 17:37:20,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 17:37:20,098 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 17:37:20,102 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 17:37:20,113 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 17:37:20,114 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 17:37:20,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 17:37:20,117 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 17:37:20,130 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 17:37:20,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 17:37:20,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 17:37:20,132 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 17:37:20,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 17:37:20,133 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 17:37:20,133 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 17:37:20,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 17:37:20,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 17:37:20,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 17:37:20,134 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 17:37:20,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 17:37:20,134 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 17:37:20,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 17:37:20,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 17:37:20,135 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 17:37:20,135 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 17:37:20,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 17:37:20,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 17:37:20,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 17:37:20,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 17:37:20,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 17:37:20,137 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 17:37:20,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 17:37:20,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 17:37:20,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 17:37:20,602 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 17:37:20,603 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 17:37:20,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092b.c [2021-02-23 17:37:20,695 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14903e643/1207f79c92e442b4a037f0d8b13a1ec2/FLAG22b600625 [2021-02-23 17:37:21,438 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 17:37:21,438 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1092b.c [2021-02-23 17:37:21,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14903e643/1207f79c92e442b4a037f0d8b13a1ec2/FLAG22b600625 [2021-02-23 17:37:21,784 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14903e643/1207f79c92e442b4a037f0d8b13a1ec2 [2021-02-23 17:37:21,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 17:37:21,805 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 17:37:21,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 17:37:21,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 17:37:21,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 17:37:21,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:37:21" (1/1) ... [2021-02-23 17:37:21,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@270f374c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:21, skipping insertion in model container [2021-02-23 17:37:21,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 05:37:21" (1/1) ... [2021-02-23 17:37:21,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 17:37:21,855 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 17:37:22,128 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_1092b.c[2109,2122] [2021-02-23 17:37:22,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:37:22,144 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 17:37:22,207 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_1092b.c[2109,2122] [2021-02-23 17:37:22,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 17:37:22,229 INFO L208 MainTranslator]: Completed translation [2021-02-23 17:37:22,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:22 WrapperNode [2021-02-23 17:37:22,230 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 17:37:22,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 17:37:22,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 17:37:22,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 17:37:22,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:22" (1/1) ... [2021-02-23 17:37:22,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:22" (1/1) ... [2021-02-23 17:37:22,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:22" (1/1) ... [2021-02-23 17:37:22,254 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:22" (1/1) ... [2021-02-23 17:37:22,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:22" (1/1) ... [2021-02-23 17:37:22,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:22" (1/1) ... [2021-02-23 17:37:22,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:22" (1/1) ... [2021-02-23 17:37:22,277 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 17:37:22,278 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 17:37:22,278 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 17:37:22,278 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 17:37:22,279 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:22" (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 17:37:22,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 17:37:22,374 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 17:37:22,374 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 17:37:22,375 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-23 17:37:22,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2021-02-23 17:37:22,375 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 17:37:22,375 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 17:37:22,375 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 17:37:22,376 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 17:37:22,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 17:37:22,376 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-23 17:37:22,376 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2021-02-23 17:37:22,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 17:37:22,379 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 17:37:22,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 17:37:22,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 17:37:22,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 17:37:22,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 17:37:22,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 17:37:22,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 17:37:22,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 17:37:22,889 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 17:37:22,889 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-23 17:37:22,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:37:22 BoogieIcfgContainer [2021-02-23 17:37:22,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 17:37:22,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 17:37:22,894 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 17:37:22,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 17:37:22,897 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 05:37:21" (1/3) ... [2021-02-23 17:37:22,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654219db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:37:22, skipping insertion in model container [2021-02-23 17:37:22,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 05:37:22" (2/3) ... [2021-02-23 17:37:22,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@654219db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 05:37:22, skipping insertion in model container [2021-02-23 17:37:22,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 05:37:22" (3/3) ... [2021-02-23 17:37:22,901 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092b.c [2021-02-23 17:37:22,907 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 17:37:22,912 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 17:37:22,930 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 17:37:22,954 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 17:37:22,954 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 17:37:22,954 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 17:37:22,954 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 17:37:22,954 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 17:37:22,955 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 17:37:22,955 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 17:37:22,955 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 17:37:22,973 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2021-02-23 17:37:22,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-23 17:37:22,985 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:37:22,986 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] [2021-02-23 17:37:22,986 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:37:22,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:37:22,994 INFO L82 PathProgramCache]: Analyzing trace with hash 1613815000, now seen corresponding path program 1 times [2021-02-23 17:37:23,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:37:23,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527760687] [2021-02-23 17:37:23,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:37:23,093 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:37:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:23,258 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:23,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:23,264 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:23,266 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:23,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 17:37:23,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:23,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:23,400 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:23,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 17:37:23,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 17:37:23,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:23,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:23,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 17:37:23,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 17:37:23,457 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 17:37:23,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527760687] [2021-02-23 17:37:23,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 17:37:23,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 17:37:23,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77537373] [2021-02-23 17:37:23,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 17:37:23,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 17:37:23,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 17:37:23,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 17:37:23,490 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 4 states. [2021-02-23 17:37:23,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 17:37:23,935 INFO L93 Difference]: Finished difference Result 156 states and 194 transitions. [2021-02-23 17:37:23,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 17:37:23,938 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2021-02-23 17:37:23,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 17:37:23,953 INFO L225 Difference]: With dead ends: 156 [2021-02-23 17:37:23,953 INFO L226 Difference]: Without dead ends: 83 [2021-02-23 17:37:23,959 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 17:37:23,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-02-23 17:37:24,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2021-02-23 17:37:24,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2021-02-23 17:37:24,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 97 transitions. [2021-02-23 17:37:24,050 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 97 transitions. Word has length 33 [2021-02-23 17:37:24,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 17:37:24,051 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 97 transitions. [2021-02-23 17:37:24,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 17:37:24,051 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 97 transitions. [2021-02-23 17:37:24,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-02-23 17:37:24,056 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 17:37:24,056 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] [2021-02-23 17:37:24,057 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 17:37:24,057 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 17:37:24,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 17:37:24,058 INFO L82 PathProgramCache]: Analyzing trace with hash 687052032, now seen corresponding path program 1 times [2021-02-23 17:37:24,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 17:37:24,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007539879] [2021-02-23 17:37:24,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 17:37:24,070 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 17:37:24,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:37:24,130 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:37:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 17:37:24,167 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 17:37:24,201 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 17:37:24,202 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 17:37:24,203 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 17:37:24,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 05:37:24 BoogieIcfgContainer [2021-02-23 17:37:24,222 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 17:37:24,224 INFO L168 Benchmark]: Toolchain (without parser) took 2431.86 ms. Allocated memory is still 152.0 MB. Free memory was 128.0 MB in the beginning and 115.5 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:24,225 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 152.0 MB. Free memory was 126.4 MB in the beginning and 126.2 MB in the end (delta: 115.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 17:37:24,226 INFO L168 Benchmark]: CACSL2BoogieTranslator took 419.09 ms. Allocated memory is still 152.0 MB. Free memory was 127.0 MB in the beginning and 116.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:24,227 INFO L168 Benchmark]: Boogie Preprocessor took 46.05 ms. Allocated memory is still 152.0 MB. Free memory was 116.2 MB in the beginning and 114.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:24,228 INFO L168 Benchmark]: RCFGBuilder took 613.73 ms. Allocated memory is still 152.0 MB. Free memory was 114.4 MB in the beginning and 121.6 MB in the end (delta: -7.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:24,229 INFO L168 Benchmark]: TraceAbstraction took 1329.14 ms. Allocated memory is still 152.0 MB. Free memory was 121.1 MB in the beginning and 115.5 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 8.0 GB. [2021-02-23 17:37:24,233 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 152.0 MB. Free memory was 126.4 MB in the beginning and 126.2 MB in the end (delta: 115.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 419.09 ms. Allocated memory is still 152.0 MB. Free memory was 127.0 MB in the beginning and 116.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.05 ms. Allocated memory is still 152.0 MB. Free memory was 116.2 MB in the beginning and 114.6 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 613.73 ms. Allocated memory is still 152.0 MB. Free memory was 114.4 MB in the beginning and 121.6 MB in the end (delta: -7.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1329.14 ms. Allocated memory is still 152.0 MB. Free memory was 121.1 MB in the beginning and 115.5 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 98]: 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 97, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticDOUBLEoperation at line 55. Possible FailurePath: [L19] static const double huge_ceil = 1.0e300; [L93] double x = 0.0; [L94] CALL, EXPR ceil_double(x) [L22] __int32_t i0, i1, j0; [L23] __uint32_t i, j; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (i0) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (i1) = ew_u.parts.lsw [L30] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L31] COND FALSE !(j0 < 20) [L53] COND TRUE j0 > 51 [L54] COND TRUE j0 == 0x400 [L55] return x + x; [L94] RET, EXPR ceil_double(x) [L94] double res = ceil_double(x); [L97] COND TRUE res != x [L98] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 96 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 15 SDslu, 76 SDs, 0 SdLazy, 109 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=89occurred 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...