/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_1032c.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:09:53,038 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:09:53,043 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:09:53,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 20:09:53,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 20:09:53,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 20:09:53,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 20:09:53,119 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 20:09:53,122 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 20:09:53,128 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 20:09:53,130 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 20:09:53,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 20:09:53,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:09:53,136 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:09:53,139 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:09:53,141 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:09:53,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:09:53,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:09:53,154 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:09:53,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:09:53,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:09:53,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:09:53,167 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:09:53,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:09:53,186 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:09:53,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:09:53,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:09:53,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:09:53,201 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 20:09:53,214 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:09:53,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:09:53,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:09:53,216 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:09:53,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:09:53,217 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:09:53,217 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:09:53,217 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:09:53,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:09:53,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:09:53,218 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:09:53,218 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:09:53,218 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:09:53,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:09:53,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:09:53,219 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:09:53,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:09:53,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:09:53,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:09:53,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:09:53,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:09:53,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:09:53,221 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:09:53,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:09:53,649 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:09:53,652 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:09:53,654 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:09:53,654 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:09:53,655 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c [2021-02-21 20:09:53,742 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/accee696b/5491ed5c26be4535a6bf123355836317/FLAGd85bc5b58 [2021-02-21 20:09:54,383 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:09:54,384 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032c.c [2021-02-21 20:09:54,392 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/accee696b/5491ed5c26be4535a6bf123355836317/FLAGd85bc5b58 [2021-02-21 20:09:54,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/accee696b/5491ed5c26be4535a6bf123355836317 [2021-02-21 20:09:54,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:09:54,429 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:09:54,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:09:54,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:09:54,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:09:54,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:09:54" (1/1) ... [2021-02-21 20:09:54,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6683a351 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:54, skipping insertion in model container [2021-02-21 20:09:54,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:09:54" (1/1) ... [2021-02-21 20:09:54,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:09:54,468 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:09:54,696 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_1032c.c[2355,2368] [2021-02-21 20:09:54,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:09:54,720 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:09:54,790 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_1032c.c[2355,2368] [2021-02-21 20:09:54,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:09:54,817 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:09:54,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:54 WrapperNode [2021-02-21 20:09:54,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:09:54,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:09:54,819 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:09:54,819 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:09:54,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:54" (1/1) ... [2021-02-21 20:09:54,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:54" (1/1) ... [2021-02-21 20:09:54,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:54" (1/1) ... [2021-02-21 20:09:54,855 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:54" (1/1) ... [2021-02-21 20:09:54,882 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:54" (1/1) ... [2021-02-21 20:09:54,891 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:54" (1/1) ... [2021-02-21 20:09:54,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:54" (1/1) ... [2021-02-21 20:09:54,904 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:09:54,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:09:54,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:09:54,908 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:09:54,909 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:54" (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 20:09:55,020 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:09:55,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:09:55,021 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:09:55,021 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2021-02-21 20:09:55,021 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2021-02-21 20:09:55,022 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:09:55,022 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:09:55,022 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:09:55,023 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:09:55,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:09:55,024 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2021-02-21 20:09:55,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 20:09:55,024 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:09:55,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:09:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:09:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 20:09:55,025 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2021-02-21 20:09:55,026 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:09:55,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:09:55,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:09:55,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:09:55,625 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:09:55,626 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-21 20:09:55,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:09:55 BoogieIcfgContainer [2021-02-21 20:09:55,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:09:55,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:09:55,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:09:55,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:09:55,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:09:54" (1/3) ... [2021-02-21 20:09:55,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16fc1755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:09:55, skipping insertion in model container [2021-02-21 20:09:55,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:09:54" (2/3) ... [2021-02-21 20:09:55,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16fc1755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:09:55, skipping insertion in model container [2021-02-21 20:09:55,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:09:55" (3/3) ... [2021-02-21 20:09:55,638 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032c.c [2021-02-21 20:09:55,647 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:09:55,653 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:09:55,675 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:09:55,701 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:09:55,701 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:09:55,701 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:09:55,701 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:09:55,702 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:09:55,702 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:09:55,702 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:09:55,702 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:09:55,722 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states. [2021-02-21 20:09:55,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-02-21 20:09:55,734 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:09:55,735 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] [2021-02-21 20:09:55,736 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:09:55,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:09:55,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1721785785, now seen corresponding path program 1 times [2021-02-21 20:09:55,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:09:55,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92037655] [2021-02-21 20:09:55,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:09:55,838 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:09:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:09:55,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:55,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:55,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:55,960 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:56,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:09:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:09:56,045 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:56,046 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:56,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-21 20:09:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:09:56,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:56,093 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:56,094 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:56,095 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:56,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-21 20:09:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:09:56,119 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:56,120 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:56,126 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:09:56,130 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:09:56,143 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 20:09:56,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92037655] [2021-02-21 20:09:56,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:09:56,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 20:09:56,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800227003] [2021-02-21 20:09:56,153 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 20:09:56,154 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:09:56,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 20:09:56,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 20:09:56,171 INFO L87 Difference]: Start difference. First operand 102 states. Second operand 4 states. [2021-02-21 20:09:56,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:09:56,720 INFO L93 Difference]: Finished difference Result 185 states and 214 transitions. [2021-02-21 20:09:56,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 20:09:56,722 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2021-02-21 20:09:56,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:09:56,735 INFO L225 Difference]: With dead ends: 185 [2021-02-21 20:09:56,735 INFO L226 Difference]: Without dead ends: 95 [2021-02-21 20:09:56,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 20:09:56,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-02-21 20:09:56,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-02-21 20:09:56,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2021-02-21 20:09:56,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2021-02-21 20:09:56,801 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 43 [2021-02-21 20:09:56,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:09:56,801 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2021-02-21 20:09:56,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 20:09:56,802 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2021-02-21 20:09:56,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-02-21 20:09:56,805 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:09:56,805 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:09:56,805 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:09:56,806 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:09:56,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:09:56,807 INFO L82 PathProgramCache]: Analyzing trace with hash 748022647, now seen corresponding path program 1 times [2021-02-21 20:09:56,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:09:56,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355213930] [2021-02-21 20:09:56,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:09:56,811 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:09:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:09:56,960 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:09:57,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 20:09:57,097 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 20:09:57,135 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 20:09:57,136 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 20:09:57,137 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:09:57,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:09:57 BoogieIcfgContainer [2021-02-21 20:09:57,156 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:09:57,158 INFO L168 Benchmark]: Toolchain (without parser) took 2739.85 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 105.3 MB in the end (delta: 21.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:57,159 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:09:57,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.86 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:57,160 INFO L168 Benchmark]: Boogie Preprocessor took 87.62 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 113.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:57,161 INFO L168 Benchmark]: RCFGBuilder took 721.08 ms. Allocated memory is still 151.0 MB. Free memory was 113.3 MB in the beginning and 119.0 MB in the end (delta: -5.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:57,162 INFO L168 Benchmark]: TraceAbstraction took 1525.96 ms. Allocated memory is still 151.0 MB. Free memory was 118.5 MB in the beginning and 105.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.8 MB. Max. memory is 8.0 GB. [2021-02-21 20:09:57,165 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 386.86 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.1 MB in the end (delta: 10.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 87.62 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 113.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 721.08 ms. Allocated memory is still 151.0 MB. Free memory was 113.3 MB in the beginning and 119.0 MB in the end (delta: -5.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1525.96 ms. Allocated memory is still 151.0 MB. Free memory was 118.5 MB in the beginning and 105.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 14.8 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 bitwiseOr at line 77, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 74. Possible FailurePath: [L88] double x = 1.0 / 0.0; [L89] CALL, EXPR round_double(x) [L17] __int32_t msw, exponent_less_1023; [L18] __uint32_t lsw; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (msw) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (lsw) = ew_u.parts.lsw [L25] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L26] COND FALSE !(exponent_less_1023 < 20) [L40] COND TRUE exponent_less_1023 > 51 [L41] COND TRUE exponent_less_1023 == 1024 [L42] return x + x; [L89] RET, EXPR round_double(x) [L89] double res = round_double(x); [L92] CALL, EXPR isinf_double(res) [L67] __int32_t hx, lx; [L69] ieee_double_shape_type ew_u; [L70] ew_u.value = (x) [L71] EXPR ew_u.parts.msw [L71] (hx) = ew_u.parts.msw [L72] EXPR ew_u.parts.lsw [L72] (lx) = ew_u.parts.lsw [L74] hx &= 0x7fffffff [L75] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L76] hx = 0x7ff00000 - hx [L77] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L92] RET, EXPR isinf_double(res) [L92] COND TRUE !isinf_double(res) [L93] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 105 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 105 SDtfs, 17 SDslu, 77 SDs, 0 SdLazy, 117 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred 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...