/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 15:47:06,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 15:47:06,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 15:47:06,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 15:47:06,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 15:47:06,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 15:47:06,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 15:47:06,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 15:47:06,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 15:47:06,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 15:47:06,901 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 15:47:06,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 15:47:06,903 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 15:47:06,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 15:47:06,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 15:47:06,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 15:47:06,914 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 15:47:06,915 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 15:47:06,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 15:47:06,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 15:47:06,930 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 15:47:06,931 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 15:47:06,934 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 15:47:06,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 15:47:06,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 15:47:06,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 15:47:06,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 15:47:06,956 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 15:47:06,961 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-21 15:47:07,014 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 15:47:07,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 15:47:07,019 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 15:47:07,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 15:47:07,019 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 15:47:07,020 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 15:47:07,020 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 15:47:07,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 15:47:07,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 15:47:07,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 15:47:07,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 15:47:07,022 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 15:47:07,022 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 15:47:07,023 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 15:47:07,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 15:47:07,023 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 15:47:07,023 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 15:47:07,023 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 15:47:07,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 15:47:07,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 15:47:07,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:47:07,024 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 15:47:07,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 15:47:07,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 15:47:07,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 15:47:07,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 15:47:07,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 15:47:07,026 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 15:47:07,026 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 15:47:07,395 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 15:47:07,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 15:47:07,423 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 15:47:07,424 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 15:47:07,425 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 15:47:07,426 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2021-02-21 15:47:07,511 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/401121dac/1b3963e99d1f4f3faf7f7cb5c0eca8ee/FLAGe914639a9 [2021-02-21 15:47:08,172 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 15:47:08,173 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2021-02-21 15:47:08,181 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/401121dac/1b3963e99d1f4f3faf7f7cb5c0eca8ee/FLAGe914639a9 [2021-02-21 15:47:08,549 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/401121dac/1b3963e99d1f4f3faf7f7cb5c0eca8ee [2021-02-21 15:47:08,555 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 15:47:08,569 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 15:47:08,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:08,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 15:47:08,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 15:47:08,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:08" (1/1) ... [2021-02-21 15:47:08,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@af56948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:08, skipping insertion in model container [2021-02-21 15:47:08,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:08" (1/1) ... [2021-02-21 15:47:08,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 15:47:08,622 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 15:47:08,851 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_1052c.c[2271,2284] [2021-02-21 15:47:08,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:08,866 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 15:47:08,898 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_1052c.c[2271,2284] [2021-02-21 15:47:08,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:08,915 INFO L208 MainTranslator]: Completed translation [2021-02-21 15:47:08,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:08 WrapperNode [2021-02-21 15:47:08,915 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:08,916 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 15:47:08,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 15:47:08,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 15:47:08,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:08" (1/1) ... [2021-02-21 15:47:08,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:08" (1/1) ... [2021-02-21 15:47:08,937 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:08" (1/1) ... [2021-02-21 15:47:08,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:08" (1/1) ... [2021-02-21 15:47:08,949 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:08" (1/1) ... [2021-02-21 15:47:08,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:08" (1/1) ... [2021-02-21 15:47:08,958 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:08" (1/1) ... [2021-02-21 15:47:08,961 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 15:47:08,962 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 15:47:08,962 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 15:47:08,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 15:47:08,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:08" (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 15:47:09,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 15:47:09,059 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 15:47:09,059 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 15:47:09,059 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2021-02-21 15:47:09,059 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-21 15:47:09,059 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 15:47:09,060 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 15:47:09,060 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 15:47:09,060 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 15:47:09,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 15:47:09,060 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2021-02-21 15:47:09,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 15:47:09,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 15:47:09,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 15:47:09,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 15:47:09,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 15:47:09,061 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-21 15:47:09,061 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 15:47:09,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 15:47:09,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 15:47:09,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 15:47:09,470 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 15:47:09,471 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-21 15:47:09,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:09 BoogieIcfgContainer [2021-02-21 15:47:09,473 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 15:47:09,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 15:47:09,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 15:47:09,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 15:47:09,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:47:08" (1/3) ... [2021-02-21 15:47:09,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f3a4cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:09, skipping insertion in model container [2021-02-21 15:47:09,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:08" (2/3) ... [2021-02-21 15:47:09,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70f3a4cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:09, skipping insertion in model container [2021-02-21 15:47:09,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:09" (3/3) ... [2021-02-21 15:47:09,483 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2021-02-21 15:47:09,491 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 15:47:09,495 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 15:47:09,560 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 15:47:09,590 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 15:47:09,590 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 15:47:09,591 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 15:47:09,591 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 15:47:09,591 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 15:47:09,591 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 15:47:09,591 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 15:47:09,591 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 15:47:09,609 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2021-02-21 15:47:09,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-02-21 15:47:09,616 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:09,617 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 15:47:09,617 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:09,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:09,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1979345982, now seen corresponding path program 1 times [2021-02-21 15:47:09,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:09,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593303253] [2021-02-21 15:47:09,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:09,818 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:09,819 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:09,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:09,821 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:09,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:47:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:09,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:09,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:09,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:47:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:09,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:09,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:09,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:09,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:09,940 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 15:47:09,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593303253] [2021-02-21 15:47:09,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:47:09,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 15:47:09,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447352711] [2021-02-21 15:47:09,948 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 15:47:09,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:47:09,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 15:47:09,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 15:47:09,966 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2021-02-21 15:47:10,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:47:10,248 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2021-02-21 15:47:10,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 15:47:10,250 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2021-02-21 15:47:10,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:47:10,259 INFO L225 Difference]: With dead ends: 94 [2021-02-21 15:47:10,259 INFO L226 Difference]: Without dead ends: 47 [2021-02-21 15:47:10,263 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 [2021-02-21 15:47:10,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-02-21 15:47:10,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-02-21 15:47:10,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2021-02-21 15:47:10,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2021-02-21 15:47:10,309 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2021-02-21 15:47:10,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:47:10,310 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2021-02-21 15:47:10,310 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 15:47:10,310 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2021-02-21 15:47:10,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-21 15:47:10,312 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:10,312 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] [2021-02-21 15:47:10,312 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 15:47:10,312 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:10,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:10,313 INFO L82 PathProgramCache]: Analyzing trace with hash 2073956126, now seen corresponding path program 1 times [2021-02-21 15:47:10,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:10,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215206052] [2021-02-21 15:47:10,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:10,367 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:10,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:10,407 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:10,443 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 15:47:10,443 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 15:47:10,444 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 15:47:10,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:47:10 BoogieIcfgContainer [2021-02-21 15:47:10,483 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 15:47:10,484 INFO L168 Benchmark]: Toolchain (without parser) took 1927.62 ms. Allocated memory is still 172.0 MB. Free memory was 146.3 MB in the beginning and 100.3 MB in the end (delta: 46.1 MB). Peak memory consumption was 47.3 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:10,485 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 172.0 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:47:10,486 INFO L168 Benchmark]: CACSL2BoogieTranslator took 343.78 ms. Allocated memory is still 172.0 MB. Free memory was 145.3 MB in the beginning and 134.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:10,487 INFO L168 Benchmark]: Boogie Preprocessor took 44.63 ms. Allocated memory is still 172.0 MB. Free memory was 134.3 MB in the beginning and 132.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:47:10,487 INFO L168 Benchmark]: RCFGBuilder took 511.09 ms. Allocated memory is still 172.0 MB. Free memory was 132.5 MB in the beginning and 110.1 MB in the end (delta: 22.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:10,488 INFO L168 Benchmark]: TraceAbstraction took 1008.27 ms. Allocated memory is still 172.0 MB. Free memory was 109.6 MB in the beginning and 100.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.6 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:10,492 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 172.0 MB. Free memory is still 126.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 343.78 ms. Allocated memory is still 172.0 MB. Free memory was 145.3 MB in the beginning and 134.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.63 ms. Allocated memory is still 172.0 MB. Free memory was 134.3 MB in the beginning and 132.5 MB in the end (delta: 1.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 511.09 ms. Allocated memory is still 172.0 MB. Free memory was 132.5 MB in the beginning and 110.1 MB in the end (delta: 22.3 MB). Peak memory consumption was 24.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1008.27 ms. Allocated memory is still 172.0 MB. Free memory was 109.6 MB in the beginning and 100.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 10.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 105]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftRight at line 39, overapproximation of bitwiseOr at line 40, overapproximation of someUnaryDOUBLEoperation at line 100, overapproximation of bitwiseAnd at line 27, overapproximation of someBinaryDOUBLEComparisonOperation at line 104. Possible FailurePath: [L16] static const double huge_floor = 1.0e300; VAL [\old(huge_floor)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000004, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L100] double x = -0.0; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L101] CALL, EXPR floor_double(x) VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2, i1=-1, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L28] COND TRUE j0 < 20 VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2, i1=-1, j0=0, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L29] COND FALSE !(j0 < 0) [L39] i = (0x000fffff) >> j0 VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2, i1=-1, j0=0, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L40] COND TRUE ((i0 & i) | i1) == 0 [L41] return x; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010, \result=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=-2, i1=-1, j0=0, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L101] RET, EXPR floor_double(x) VAL [floor_double(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L101] double res = floor_double(x); [L104] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010, res == -0.0 && __signbit_double(res) == 1=0, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] [L104] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L105] reach_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000010] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 63 SDtfs, 6 SDslu, 58 SDs, 0 SdLazy, 63 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=51occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 1134 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...