/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_1032b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:09:49,924 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:09:49,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:09:49,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:09:49,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:09:49,990 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:09:49,993 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:09:50,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:09:50,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:09:50,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:09:50,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:09:50,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:09:50,014 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:09:50,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:09:50,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:09:50,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:09:50,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:09:50,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:09:50,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:09:50,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:09:50,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:09:50,057 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:09:50,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:09:50,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:09:50,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:09:50,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:09:50,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:09:50,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:09:50,085 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:09:50,112 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:09:50,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:09:50,116 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:09:50,117 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:09:50,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:09:50,117 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:09:50,117 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:09:50,117 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:09:50,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:09:50,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:09:50,119 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:09:50,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:09:50,119 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:09:50,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:09:50,120 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:09:50,120 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:09:50,120 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:09:50,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:09:50,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:09:50,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:09:50,121 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:09:50,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:09:50,122 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:09:50,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:09:50,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:09:50,573 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:09:50,574 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:09:50,575 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:09:50,576 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032b.c [2021-02-21 20:09:50,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc991b2f9/3bcd3dd814f84970b58291e562b8c7d4/FLAGfde8d7c08 [2021-02-21 20:09:51,359 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:09:51,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032b.c [2021-02-21 20:09:51,370 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc991b2f9/3bcd3dd814f84970b58291e562b8c7d4/FLAGfde8d7c08 [2021-02-21 20:09:51,706 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc991b2f9/3bcd3dd814f84970b58291e562b8c7d4 [2021-02-21 20:09:51,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:09:51,722 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:09:51,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:09:51,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:09:51,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:09:51,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:09:51" (1/1) ... [2021-02-21 20:09:51,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1216f9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:51, skipping insertion in model container [2021-02-21 20:09:51,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:09:51" (1/1) ... [2021-02-21 20:09:51,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:09:51,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:09:51,936 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_1032b.c[2284,2297] [2021-02-21 20:09:51,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:09:51,950 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:09:51,985 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_1032b.c[2284,2297] [2021-02-21 20:09:51,986 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:09:52,009 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:09:52,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:52 WrapperNode [2021-02-21 20:09:52,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:09:52,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:09:52,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:09:52,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:09:52,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:52" (1/1) ... [2021-02-21 20:09:52,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:52" (1/1) ... [2021-02-21 20:09:52,055 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:52" (1/1) ... [2021-02-21 20:09:52,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:52" (1/1) ... [2021-02-21 20:09:52,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:52" (1/1) ... [2021-02-21 20:09:52,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:52" (1/1) ... [2021-02-21 20:09:52,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:52" (1/1) ... [2021-02-21 20:09:52,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:09:52,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:09:52,111 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:09:52,111 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:09:52,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:52" (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 [2021-02-21 20:09:52,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:09:52,238 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:09:52,239 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:09:52,239 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-21 20:09:52,239 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2021-02-21 20:09:52,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-21 20:09:52,240 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:09:52,240 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:09:52,241 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:09:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:09:52,242 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:09:52,243 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-21 20:09:52,243 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2021-02-21 20:09:52,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 20:09:52,244 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:09:52,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:09:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:09:52,245 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 20:09:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-21 20:09:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:09:52,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:09:52,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:09:52,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:09:53,051 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:09:53,052 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-21 20:09:53,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:09:53 BoogieIcfgContainer [2021-02-21 20:09:53,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:09:53,056 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:09:53,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:09:53,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:09:53,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:09:51" (1/3) ... [2021-02-21 20:09:53,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3136fe9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:09:53, skipping insertion in model container [2021-02-21 20:09:53,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:52" (2/3) ... [2021-02-21 20:09:53,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3136fe9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:09:53, skipping insertion in model container [2021-02-21 20:09:53,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:09:53" (3/3) ... [2021-02-21 20:09:53,064 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032b.c [2021-02-21 20:09:53,072 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:09:53,077 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:09:53,099 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:09:53,139 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:09:53,139 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:09:53,140 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:09:53,140 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:09:53,140 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:09:53,141 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:09:53,141 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:09:53,141 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:09:53,165 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states. [2021-02-21 20:09:53,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-21 20:09:53,180 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:09:53,182 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] [2021-02-21 20:09:53,182 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:09:53,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:09:53,188 INFO L82 PathProgramCache]: Analyzing trace with hash 962066645, now seen corresponding path program 1 times [2021-02-21 20:09:53,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:09:53,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1237033781] [2021-02-21 20:09:53,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:09:53,291 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:09:53,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:09:53,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:53,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:53,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:53,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:53,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:09:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:09:53,527 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:53,528 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:53,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:09:53,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:09:53,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:53,576 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:53,579 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:53,581 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:53,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:09:53,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1237033781] [2021-02-21 20:09:53,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:09:53,614 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:09:53,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038349080] [2021-02-21 20:09:53,626 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:09:53,629 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:09:53,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:09:53,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:09:53,652 INFO L87 Difference]: Start difference. First operand 100 states. Second operand 4 states. [2021-02-21 20:09:54,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:09:54,289 INFO L93 Difference]: Finished difference Result 181 states and 212 transitions. [2021-02-21 20:09:54,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:09:54,292 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2021-02-21 20:09:54,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:09:54,305 INFO L225 Difference]: With dead ends: 181 [2021-02-21 20:09:54,305 INFO L226 Difference]: Without dead ends: 92 [2021-02-21 20:09:54,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 20:09:54,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-02-21 20:09:54,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-02-21 20:09:54,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-02-21 20:09:54,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2021-02-21 20:09:54,398 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 34 [2021-02-21 20:09:54,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:09:54,399 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2021-02-21 20:09:54,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:09:54,400 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2021-02-21 20:09:54,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-21 20:09:54,402 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:09:54,402 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] [2021-02-21 20:09:54,403 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:09:54,403 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:09:54,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:09:54,404 INFO L82 PathProgramCache]: Analyzing trace with hash -333689283, now seen corresponding path program 1 times [2021-02-21 20:09:54,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:09:54,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129961296] [2021-02-21 20:09:54,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:09:54,408 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:09:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:09:54,477 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:09:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:09:54,558 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:09:54,623 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:09:54,623 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:09:54,629 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:09:54,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:09:54 BoogieIcfgContainer [2021-02-21 20:09:54,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:09:54,658 INFO L168 Benchmark]: Toolchain (without parser) took 2944.28 ms. Allocated memory is still 159.4 MB. Free memory was 136.1 MB in the beginning and 68.8 MB in the end (delta: 67.3 MB). Peak memory consumption was 67.3 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:54,660 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 159.4 MB. Free memory was 133.1 MB in the beginning and 132.9 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:09:54,661 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.13 ms. Allocated memory is still 159.4 MB. Free memory was 135.1 MB in the beginning and 124.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:54,664 INFO L168 Benchmark]: Boogie Preprocessor took 95.73 ms. Allocated memory is still 159.4 MB. Free memory was 124.3 MB in the beginning and 122.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:54,665 INFO L168 Benchmark]: RCFGBuilder took 943.57 ms. Allocated memory is still 159.4 MB. Free memory was 122.3 MB in the beginning and 137.0 MB in the end (delta: -14.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:54,666 INFO L168 Benchmark]: TraceAbstraction took 1598.01 ms. Allocated memory is still 159.4 MB. Free memory was 136.5 MB in the beginning and 68.8 MB in the end (delta: 67.6 MB). Peak memory consumption was 67.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:54,677 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 159.4 MB. Free memory was 133.1 MB in the beginning and 132.9 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 286.13 ms. Allocated memory is still 159.4 MB. Free memory was 135.1 MB in the beginning and 124.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 95.73 ms. Allocated memory is still 159.4 MB. Free memory was 124.3 MB in the beginning and 122.5 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 943.57 ms. Allocated memory is still 159.4 MB. Free memory was 122.3 MB in the beginning and 137.0 MB in the end (delta: -14.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1598.01 ms. Allocated memory is still 159.4 MB. Free memory was 136.5 MB in the beginning and 68.8 MB in the end (delta: 67.6 MB). Peak memory consumption was 67.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 93]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 92. Possible FailurePath: [L88] double x = -0.0; [L89] CALL, EXPR round_double(x) [L20] __int32_t msw, exponent_less_1023; [L21] __uint32_t lsw; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L29] COND FALSE !(exponent_less_1023 < 20) [L43] COND TRUE exponent_less_1023 > 51 [L44] COND TRUE exponent_less_1023 == 1024 [L45] return x + x; [L89] RET, EXPR round_double(x) [L89] double res = round_double(x); [L92] EXPR res == -0.0 && __signbit_double(res) == 1 [L92] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L93] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 107 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 104 SDtfs, 15 SDslu, 78 SDs, 0 SdLazy, 116 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=100occurred 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...