/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -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-36cd7be [2021-02-23 22:33:58,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:33:58,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:33:58,870 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 22:33:58,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 22:33:58,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 22:33:58,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 22:33:58,906 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 22:33:58,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 22:33:58,911 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 22:33:58,917 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 22:33:58,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 22:33:58,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 22:33:58,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 22:33:58,930 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 22:33:58,932 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 22:33:58,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 22:33:58,956 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 22:33:58,978 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:33:58,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:33:58,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:33:58,983 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:33:58,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:33:58,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:33:58,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:33:58,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:33:58,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:33:58,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:33:58,985 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:33:58,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:33:58,986 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:33:58,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:33:58,987 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:33:58,987 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:33:58,987 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:33:58,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:33:58,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:33:58,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:33:58,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:33:58,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:33:58,989 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:33:59,367 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:33:59,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:33:59,400 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:33:59,401 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:33:59,402 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:33:59,403 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032b.c [2021-02-23 22:33:59,468 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/060d54eeb/940b160124254c5fa70c47843e21fc1a/FLAG684c6892f [2021-02-23 22:34:00,111 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:34:00,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032b.c [2021-02-23 22:34:00,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/060d54eeb/940b160124254c5fa70c47843e21fc1a/FLAG684c6892f [2021-02-23 22:34:00,481 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/060d54eeb/940b160124254c5fa70c47843e21fc1a [2021-02-23 22:34:00,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:34:00,500 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:34:00,506 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:34:00,506 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:34:00,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:34:00,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:34:00" (1/1) ... [2021-02-23 22:34:00,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a66db38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:00, skipping insertion in model container [2021-02-23 22:34:00,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:34:00" (1/1) ... [2021-02-23 22:34:00,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:34:00,547 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:34:00,744 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] [2021-02-23 22:34:00,748 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:34:00,757 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:34:00,788 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] [2021-02-23 22:34:00,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:34:00,807 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:34:00,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:00 WrapperNode [2021-02-23 22:34:00,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:34:00,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:34:00,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:34:00,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:34:00,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:00" (1/1) ... [2021-02-23 22:34:00,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:00" (1/1) ... [2021-02-23 22:34:00,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:00" (1/1) ... [2021-02-23 22:34:00,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:00" (1/1) ... [2021-02-23 22:34:00,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:00" (1/1) ... [2021-02-23 22:34:00,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:00" (1/1) ... [2021-02-23 22:34:00,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:00" (1/1) ... [2021-02-23 22:34:00,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:34:00,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:34:00,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:34:00,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:34:00,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:00" (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 22:34:00,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:34:00,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:34:00,965 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:34:00,965 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2021-02-23 22:34:00,965 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2021-02-23 22:34:00,966 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-23 22:34:00,966 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:34:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:34:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:34:00,966 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:34:00,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:34:00,967 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2021-02-23 22:34:00,967 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2021-02-23 22:34:00,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 22:34:00,967 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:34:00,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:34:00,968 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:34:00,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 22:34:00,968 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-23 22:34:00,968 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:34:00,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:34:00,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:34:00,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:34:01,600 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:34:01,600 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-23 22:34:01,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:34:01 BoogieIcfgContainer [2021-02-23 22:34:01,602 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:34:01,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:34:01,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:34:01,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:34:01,608 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:34:00" (1/3) ... [2021-02-23 22:34:01,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571435f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:34:01, skipping insertion in model container [2021-02-23 22:34:01,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:34:00" (2/3) ... [2021-02-23 22:34:01,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@571435f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:34:01, skipping insertion in model container [2021-02-23 22:34:01,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:34:01" (3/3) ... [2021-02-23 22:34:01,611 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032b.c [2021-02-23 22:34:01,618 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:34:01,623 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 22:34:01,643 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 22:34:01,667 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:34:01,668 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:34:01,668 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:34:01,668 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:34:01,668 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:34:01,668 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:34:01,668 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:34:01,668 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:34:01,685 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states. [2021-02-23 22:34:01,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-02-23 22:34:01,696 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:34:01,697 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] [2021-02-23 22:34:01,697 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:34:01,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:34:01,704 INFO L82 PathProgramCache]: Analyzing trace with hash 962066645, now seen corresponding path program 1 times [2021-02-23 22:34:01,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:34:01,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [310244486] [2021-02-23 22:34:01,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:34:01,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:01,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:01,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:01,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:01,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:01,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:34:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:01,986 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:01,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:02,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-23 22:34:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:34:02,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:02,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:02,068 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:34:02,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:34:02,077 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 22:34:02,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [310244486] [2021-02-23 22:34:02,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:34:02,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 22:34:02,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787735743] [2021-02-23 22:34:02,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 22:34:02,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:34:02,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 22:34:02,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 22:34:02,103 INFO L87 Difference]: Start difference. First operand 100 states. Second operand 4 states. [2021-02-23 22:34:02,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:34:02,489 INFO L93 Difference]: Finished difference Result 181 states and 212 transitions. [2021-02-23 22:34:02,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 22:34:02,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 34 [2021-02-23 22:34:02,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:34:02,503 INFO L225 Difference]: With dead ends: 181 [2021-02-23 22:34:02,503 INFO L226 Difference]: Without dead ends: 92 [2021-02-23 22:34:02,507 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 22:34:02,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-02-23 22:34:02,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-02-23 22:34:02,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2021-02-23 22:34:02,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2021-02-23 22:34:02,568 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 34 [2021-02-23 22:34:02,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:34:02,569 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2021-02-23 22:34:02,569 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 22:34:02,569 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2021-02-23 22:34:02,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-02-23 22:34:02,573 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:34:02,574 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] [2021-02-23 22:34:02,575 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:34:02,575 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:34:02,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:34:02,576 INFO L82 PathProgramCache]: Analyzing trace with hash -333689283, now seen corresponding path program 1 times [2021-02-23 22:34:02,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:34:02,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [106909944] [2021-02-23 22:34:02,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:34:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:34:02,667 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:34:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:34:02,739 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:34:02,793 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 22:34:02,793 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 22:34:02,795 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 22:34:02,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:34:02 BoogieIcfgContainer [2021-02-23 22:34:02,858 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:34:02,860 INFO L168 Benchmark]: Toolchain (without parser) took 2373.31 ms. Allocated memory was 153.1 MB in the beginning and 191.9 MB in the end (delta: 38.8 MB). Free memory was 128.7 MB in the beginning and 151.1 MB in the end (delta: -22.5 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:02,861 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 153.1 MB. Free memory is still 132.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:34:02,861 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.16 ms. Allocated memory is still 153.1 MB. Free memory was 127.5 MB in the beginning and 116.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:02,864 INFO L168 Benchmark]: Boogie Preprocessor took 46.44 ms. Allocated memory is still 153.1 MB. Free memory was 116.6 MB in the beginning and 114.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:02,865 INFO L168 Benchmark]: RCFGBuilder took 746.21 ms. Allocated memory is still 153.1 MB. Free memory was 114.8 MB in the beginning and 126.7 MB in the end (delta: -11.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:02,868 INFO L168 Benchmark]: TraceAbstraction took 1254.18 ms. Allocated memory was 153.1 MB in the beginning and 191.9 MB in the end (delta: 38.8 MB). Free memory was 126.2 MB in the beginning and 151.1 MB in the end (delta: -24.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 8.0 GB. [2021-02-23 22:34:02,875 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 153.1 MB. Free memory is still 132.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 302.16 ms. Allocated memory is still 153.1 MB. Free memory was 127.5 MB in the beginning and 116.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.44 ms. Allocated memory is still 153.1 MB. Free memory was 116.6 MB in the beginning and 114.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 746.21 ms. Allocated memory is still 153.1 MB. Free memory was 114.8 MB in the beginning and 126.7 MB in the end (delta: -11.9 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1254.18 ms. Allocated memory was 153.1 MB in the beginning and 191.9 MB in the end (delta: 38.8 MB). Free memory was 126.2 MB in the beginning and 151.1 MB in the end (delta: -24.9 MB). Peak memory consumption was 14.9 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) VAL [\old(x)=4294967301] [L20] __int32_t msw, exponent_less_1023; VAL [\old(x)=4294967301, x=4294967301] [L21] __uint32_t lsw; VAL [\old(x)=4294967301, x=4294967301] [L23] ieee_double_shape_type ew_u; VAL [\old(x)=4294967301, ew_u={3:0}, x=4294967301] [L24] ew_u.value = (x) VAL [\old(x)=4294967301, ew_u={3:0}, x=4294967301] [L25] EXPR ew_u.parts.msw VAL [\old(x)=4294967301, ew_u={3:0}, ew_u.parts.msw=4294967295, x=4294967301] [L25] (msw) = ew_u.parts.msw VAL [\old(x)=4294967301, ew_u={3:0}, ew_u.parts.msw=4294967295, msw=-1, x=4294967301] [L26] EXPR ew_u.parts.lsw VAL [\old(x)=4294967301, ew_u={3:0}, ew_u.parts.lsw=4294967299, msw=-1, x=4294967301] [L26] (lsw) = ew_u.parts.lsw VAL [\old(x)=4294967301, ew_u={3:0}, ew_u.parts.lsw=4294967299, lsw=3, msw=-1, x=4294967301] [L28] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=4294967301, exponent_less_1023=1024, lsw=3, msw=-1, x=4294967301] [L29] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=4294967301, exponent_less_1023=1024, lsw=3, msw=-1, x=4294967301] [L43] COND TRUE exponent_less_1023 > 51 VAL [\old(x)=4294967301, exponent_less_1023=1024, lsw=3, msw=-1, x=4294967301] [L44] COND TRUE exponent_less_1023 == 1024 VAL [\old(x)=4294967301, exponent_less_1023=1024, lsw=3, msw=-1, x=4294967301] [L45] return x + x; VAL [\old(x)=4294967301, exponent_less_1023=1024, lsw=3, msw=-1, x=4294967301] [L89] RET, EXPR round_double(x) VAL [round_double(x)=4294967300, x=4294967301] [L89] double res = round_double(x); VAL [res=4294967300, round_double(x)=4294967300, x=4294967301] [L92] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [res=4294967300, res == -0.0 && __signbit_double(res) == 1=0, x=4294967301] [L92] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) VAL [res=4294967300, res == -0.0 && __signbit_double(res) == 1=0, x=4294967301] [L93] reach_error() VAL [res=4294967300, x=4294967301] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 107 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, 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, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 2475 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...