/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032d.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:31:04,768 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:31:04,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:31:04,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:31:04,920 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:31:04,940 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:31:04,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:31:04,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:31:04,946 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:31:04,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:31:04,946 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:31:04,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:31:04,947 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:31:04,947 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:31:04,947 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:31:04,949 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:31:04,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:31:04,949 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:31:04,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:31:04,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:31:04,950 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:31:04,950 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:31:04,950 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:31:04,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:31:04,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:31:04,951 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:31:04,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:31:04,951 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:31:04,952 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:31:05,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:31:05,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:31:05,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:31:05,413 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:31:05,414 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:31:05,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032d.c [2021-02-22 01:31:05,491 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95b5be56b/ec8ca3218b6a405eb98fc92819c8ba5d/FLAG178d27f5f [2021-02-22 01:31:06,193 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:31:06,194 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032d.c [2021-02-22 01:31:06,203 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95b5be56b/ec8ca3218b6a405eb98fc92819c8ba5d/FLAG178d27f5f [2021-02-22 01:31:06,518 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/95b5be56b/ec8ca3218b6a405eb98fc92819c8ba5d [2021-02-22 01:31:06,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:31:06,534 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:31:06,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:31:06,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:31:06,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:31:06,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:31:06" (1/1) ... [2021-02-22 01:31:06,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc3bb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:06, skipping insertion in model container [2021-02-22 01:31:06,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:31:06" (1/1) ... [2021-02-22 01:31:06,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:31:06,570 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:31:06,754 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_1032d.c[2356,2369] [2021-02-22 01:31:06,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:31:06,784 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:31:06,820 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_1032d.c[2356,2369] [2021-02-22 01:31:06,820 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:31:06,839 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:31:06,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:06 WrapperNode [2021-02-22 01:31:06,839 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:31:06,841 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:31:06,841 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:31:06,841 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:31:06,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:06" (1/1) ... [2021-02-22 01:31:06,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:06" (1/1) ... [2021-02-22 01:31:06,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:06" (1/1) ... [2021-02-22 01:31:06,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:06" (1/1) ... [2021-02-22 01:31:06,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:06" (1/1) ... [2021-02-22 01:31:06,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:06" (1/1) ... [2021-02-22 01:31:06,884 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:06" (1/1) ... [2021-02-22 01:31:06,888 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:31:06,889 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:31:06,889 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:31:06,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:31:06,891 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:06" (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 [2021-02-22 01:31:06,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:31:06,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:31:06,983 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:31:06,983 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2021-02-22 01:31:06,983 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2021-02-22 01:31:06,983 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:31:06,983 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:31:06,983 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:31:06,983 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:31:06,984 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:31:06,984 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2021-02-22 01:31:06,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-22 01:31:06,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:31:06,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:31:06,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:31:06,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-22 01:31:06,985 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2021-02-22 01:31:06,985 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:31:06,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:31:06,986 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:31:06,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:31:07,839 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:31:07,840 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-22 01:31:07,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:31:07 BoogieIcfgContainer [2021-02-22 01:31:07,843 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:31:07,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:31:07,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:31:07,850 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:31:07,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:31:06" (1/3) ... [2021-02-22 01:31:07,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702e00f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:31:07, skipping insertion in model container [2021-02-22 01:31:07,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:31:06" (2/3) ... [2021-02-22 01:31:07,852 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@702e00f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:31:07, skipping insertion in model container [2021-02-22 01:31:07,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:31:07" (3/3) ... [2021-02-22 01:31:07,854 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032d.c [2021-02-22 01:31:07,862 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:31:07,868 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:31:07,889 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:31:07,917 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:31:07,917 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:31:07,917 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:31:07,917 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:31:07,918 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:31:07,918 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:31:07,918 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:31:07,918 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:31:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states. [2021-02-22 01:31:07,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-02-22 01:31:07,952 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:31:07,953 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] [2021-02-22 01:31:07,954 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:31:07,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:31:07,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1721785785, now seen corresponding path program 1 times [2021-02-22 01:31:07,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:31:07,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126756830] [2021-02-22 01:31:07,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:31:08,067 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:31:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:08,203 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:08,205 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:08,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:08,207 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:08,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:31:08,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:08,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:08,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:08,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-02-22 01:31:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:08,299 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:08,299 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:08,300 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:08,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:08,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-02-22 01:31:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:31:08,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:08,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:08,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:31:08,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:31:08,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:31:08,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126756830] [2021-02-22 01:31:08,335 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:31:08,336 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-22 01:31:08,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203792472] [2021-02-22 01:31:08,346 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-22 01:31:08,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:31:08,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-22 01:31:08,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-22 01:31:08,372 INFO L87 Difference]: Start difference. First operand 102 states. Second operand 4 states. [2021-02-22 01:31:08,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:31:08,866 INFO L93 Difference]: Finished difference Result 185 states and 214 transitions. [2021-02-22 01:31:08,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-22 01:31:08,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2021-02-22 01:31:08,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:31:08,880 INFO L225 Difference]: With dead ends: 185 [2021-02-22 01:31:08,880 INFO L226 Difference]: Without dead ends: 95 [2021-02-22 01:31:08,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-22 01:31:08,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-02-22 01:31:08,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2021-02-22 01:31:08,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2021-02-22 01:31:08,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 102 transitions. [2021-02-22 01:31:08,964 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 102 transitions. Word has length 43 [2021-02-22 01:31:08,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:31:08,964 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 102 transitions. [2021-02-22 01:31:08,964 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-22 01:31:08,965 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 102 transitions. [2021-02-22 01:31:08,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-02-22 01:31:08,968 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:31:08,968 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] [2021-02-22 01:31:08,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:31:08,969 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:31:08,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:31:08,970 INFO L82 PathProgramCache]: Analyzing trace with hash 748022647, now seen corresponding path program 1 times [2021-02-22 01:31:08,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:31:08,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27192840] [2021-02-22 01:31:08,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:31:08,974 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:31:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:31:09,128 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:31:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 01:31:09,201 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 01:31:09,244 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 01:31:09,244 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 01:31:09,245 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 01:31:09,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:31:09 BoogieIcfgContainer [2021-02-22 01:31:09,267 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:31:09,270 INFO L168 Benchmark]: Toolchain (without parser) took 2745.71 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 126.4 MB in the beginning and 148.4 MB in the end (delta: -22.0 MB). Peak memory consumption was 9.8 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:09,271 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 124.1 MB in the end (delta: 435.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:31:09,271 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.95 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 114.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:09,272 INFO L168 Benchmark]: Boogie Preprocessor took 47.51 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 112.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:09,273 INFO L168 Benchmark]: RCFGBuilder took 953.58 ms. Allocated memory is still 151.0 MB. Free memory was 112.7 MB in the beginning and 121.8 MB in the end (delta: -9.1 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:09,274 INFO L168 Benchmark]: TraceAbstraction took 1421.77 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 121.3 MB in the beginning and 148.4 MB in the end (delta: -27.1 MB). Peak memory consumption was 5.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:31:09,278 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 124.1 MB in the end (delta: 435.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 303.95 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 114.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.51 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 112.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 953.58 ms. Allocated memory is still 151.0 MB. Free memory was 112.7 MB in the beginning and 121.8 MB in the end (delta: -9.1 MB). Peak memory consumption was 18.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1421.77 ms. Allocated memory was 151.0 MB in the beginning and 182.5 MB in the end (delta: 31.5 MB). Free memory was 121.3 MB in the beginning and 148.4 MB in the end (delta: -27.1 MB). Peak memory consumption was 5.4 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: 1.3s, 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, 0.0s 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...