/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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 15:47:19,621 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 15:47:19,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 15:47:19,656 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 15:47:19,669 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 15:47:19,670 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 15:47:19,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 15:47:19,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 15:47:19,673 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 15:47:19,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 15:47:19,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 15:47:19,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 15:47:19,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 15:47:19,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 15:47:19,684 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 15:47:19,685 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 15:47:19,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 15:47:19,720 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 15:47:19,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 15:47:19,723 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 15:47:19,726 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 15:47:19,779 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 15:47:19,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 15:47:19,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 15:47:19,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 15:47:19,784 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 15:47:19,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 15:47:19,785 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 15:47:19,785 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 15:47:19,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 15:47:19,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 15:47:19,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 15:47:19,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 15:47:19,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 15:47:19,788 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 15:47:19,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 15:47:19,788 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 15:47:19,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 15:47:19,789 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 15:47:19,789 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 15:47:19,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 15:47:19,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:47:19,790 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 15:47:19,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 15:47:19,790 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 15:47:19,790 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 15:47:19,790 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 15:47:19,791 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 15:47:19,791 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 15:47:19,791 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 15:47:20,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 15:47:20,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 15:47:20,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 15:47:20,213 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 15:47:20,213 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 15:47:20,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2021-02-21 15:47:20,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81232f279/30558bb079104504b86f18fed355bda8/FLAGd5faea54f [2021-02-21 15:47:21,009 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 15:47:21,011 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2021-02-21 15:47:21,021 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81232f279/30558bb079104504b86f18fed355bda8/FLAGd5faea54f [2021-02-21 15:47:21,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/81232f279/30558bb079104504b86f18fed355bda8 [2021-02-21 15:47:21,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 15:47:21,329 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 15:47:21,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:21,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 15:47:21,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 15:47:21,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:21" (1/1) ... [2021-02-21 15:47:21,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6be7f1d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:21, skipping insertion in model container [2021-02-21 15:47:21,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:21" (1/1) ... [2021-02-21 15:47:21,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 15:47:21,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 15:47:21,598 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_1131b.c[4119,4132] [2021-02-21 15:47:21,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:21,617 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 15:47:21,666 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_1131b.c[4119,4132] [2021-02-21 15:47:21,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:21,687 INFO L208 MainTranslator]: Completed translation [2021-02-21 15:47:21,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:21 WrapperNode [2021-02-21 15:47:21,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:21,689 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 15:47:21,689 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 15:47:21,689 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 15:47:21,703 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:21" (1/1) ... [2021-02-21 15:47:21,704 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:21" (1/1) ... [2021-02-21 15:47:21,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:21" (1/1) ... [2021-02-21 15:47:21,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:21" (1/1) ... [2021-02-21 15:47:21,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:21" (1/1) ... [2021-02-21 15:47:21,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:21" (1/1) ... [2021-02-21 15:47:21,800 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:21" (1/1) ... [2021-02-21 15:47:21,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 15:47:21,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 15:47:21,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 15:47:21,816 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 15:47:21,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:21" (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 15:47:21,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 15:47:21,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 15:47:21,952 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 15:47:21,952 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2021-02-21 15:47:21,953 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2021-02-21 15:47:21,953 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 15:47:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 15:47:21,953 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 15:47:21,954 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 15:47:21,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 15:47:21,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-21 15:47:21,955 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2021-02-21 15:47:21,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 15:47:21,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 15:47:21,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 15:47:21,959 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 15:47:21,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 15:47:21,959 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2021-02-21 15:47:21,959 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 15:47:21,959 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 15:47:21,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 15:47:21,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-21 15:47:21,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 15:47:22,663 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 15:47:22,664 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-02-21 15:47:22,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:22 BoogieIcfgContainer [2021-02-21 15:47:22,666 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 15:47:22,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 15:47:22,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 15:47:22,671 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 15:47:22,671 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:47:21" (1/3) ... [2021-02-21 15:47:22,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4100a3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:22, skipping insertion in model container [2021-02-21 15:47:22,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:21" (2/3) ... [2021-02-21 15:47:22,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4100a3d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:22, skipping insertion in model container [2021-02-21 15:47:22,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:22" (3/3) ... [2021-02-21 15:47:22,674 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2021-02-21 15:47:22,680 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 15:47:22,686 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 15:47:22,702 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 15:47:22,728 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 15:47:22,728 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 15:47:22,729 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 15:47:22,729 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 15:47:22,729 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 15:47:22,729 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 15:47:22,729 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 15:47:22,729 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 15:47:22,746 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2021-02-21 15:47:22,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-21 15:47:22,752 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:22,753 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] [2021-02-21 15:47:22,753 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:22,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:22,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2021-02-21 15:47:22,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:22,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581853502] [2021-02-21 15:47:22,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:22,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:22,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:22,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:22,942 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:22,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:47:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:23,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:23,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:23,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:47:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:23,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:23,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:23,064 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:23,066 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:23,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 15:47:23,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:23,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:23,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:23,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:23,086 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:23,097 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 15:47:23,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581853502] [2021-02-21 15:47:23,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:47:23,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 15:47:23,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450763709] [2021-02-21 15:47:23,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 15:47:23,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:47:23,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 15:47:23,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 15:47:23,126 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2021-02-21 15:47:23,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:47:23,444 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2021-02-21 15:47:23,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 15:47:23,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2021-02-21 15:47:23,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:47:23,455 INFO L225 Difference]: With dead ends: 138 [2021-02-21 15:47:23,456 INFO L226 Difference]: Without dead ends: 68 [2021-02-21 15:47:23,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 15:47:23,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-02-21 15:47:23,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2021-02-21 15:47:23,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-02-21 15:47:23,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2021-02-21 15:47:23,509 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2021-02-21 15:47:23,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:47:23,509 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2021-02-21 15:47:23,510 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 15:47:23,510 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2021-02-21 15:47:23,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-21 15:47:23,511 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:23,511 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] [2021-02-21 15:47:23,512 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 15:47:23,512 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:23,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:23,513 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2021-02-21 15:47:23,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:23,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671529665] [2021-02-21 15:47:23,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:23,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:23,663 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:23,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:23,747 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:23,805 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 15:47:23,806 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 15:47:23,808 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 15:47:23,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:47:23 BoogieIcfgContainer [2021-02-21 15:47:23,867 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 15:47:23,869 INFO L168 Benchmark]: Toolchain (without parser) took 2552.19 ms. Allocated memory is still 156.2 MB. Free memory was 131.3 MB in the beginning and 123.9 MB in the end (delta: 7.4 MB). Peak memory consumption was 8.3 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:23,870 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 156.2 MB. Free memory is still 129.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:47:23,871 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.76 ms. Allocated memory is still 156.2 MB. Free memory was 130.3 MB in the beginning and 117.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:23,871 INFO L168 Benchmark]: Boogie Preprocessor took 125.75 ms. Allocated memory is still 156.2 MB. Free memory was 117.2 MB in the beginning and 114.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:23,872 INFO L168 Benchmark]: RCFGBuilder took 850.47 ms. Allocated memory is still 156.2 MB. Free memory was 114.4 MB in the beginning and 113.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 10.7 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:23,873 INFO L168 Benchmark]: TraceAbstraction took 1199.90 ms. Allocated memory is still 156.2 MB. Free memory was 112.6 MB in the beginning and 123.9 MB in the end (delta: -11.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:47:23,877 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 156.2 MB. Free memory is still 129.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 356.76 ms. Allocated memory is still 156.2 MB. Free memory was 130.3 MB in the beginning and 117.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 125.75 ms. Allocated memory is still 156.2 MB. Free memory was 117.2 MB in the beginning and 114.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 850.47 ms. Allocated memory is still 156.2 MB. Free memory was 114.4 MB in the beginning and 113.1 MB in the end (delta: 1.3 MB). Peak memory consumption was 10.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1199.90 ms. Allocated memory is still 156.2 MB. Free memory was 112.6 MB in the beginning and 123.9 MB in the end (delta: -11.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 188]: 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 43, overapproximation of someUnaryDOUBLEoperation at line 19, overapproximation of someBinaryArithmeticDOUBLEoperation at line 44, overapproximation of bitwiseAnd at line 38, overapproximation of someBinaryDOUBLEComparisonOperation at line 187, overapproximation of bitwiseXor at line 39. Possible FailurePath: [L17-L20] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=9223372032558759952, \old(Zero_fmod)=9223372032558759951, \old(Zero_fmod)=9223372032558759944, one_fmod=1, Zero_fmod={5:0}] [L179] double y = -1.0 / 0.0; [L180] double x = __VERIFIER_nondet_double(); [L182] CALL isfinite_double(x) VAL [\old(x)=9223372032558759940, one_fmod=1, Zero_fmod={5:0}] [L163] __int32_t hx; VAL [\old(x)=9223372032558759940, one_fmod=1, x=9223372032558759940, Zero_fmod={5:0}] [L165] ieee_double_shape_type gh_u; [L166] gh_u.value = (x) [L167] EXPR gh_u.parts.msw [L167] (hx) = gh_u.parts.msw [L169] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [\old(x)=9223372032558759940, \result=-3, hx=-2, one_fmod=1, x=9223372032558759940, Zero_fmod={5:0}] [L182] RET isfinite_double(x) VAL [isfinite_double(x)=-3, one_fmod=1, x=9223372032558759940, Zero_fmod={5:0}] [L182] COND TRUE isfinite_double(x) [L184] CALL, EXPR fmod_double(x, y) VAL [\old(x)=9223372032558759940, \old(y)=9223372032558759953, one_fmod=1, Zero_fmod={5:0}] [L23] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L24] __uint32_t lx, ly, lz; VAL [\old(x)=9223372032558759940, \old(y)=9223372032558759953, one_fmod=1, x=9223372032558759940, y=9223372032558759953, Zero_fmod={5:0}] [L27] ieee_double_shape_type ew_u; [L28] ew_u.value = (x) [L29] EXPR ew_u.parts.msw [L29] (hx) = ew_u.parts.msw [L30] EXPR ew_u.parts.lsw [L30] (lx) = ew_u.parts.lsw [L33] ieee_double_shape_type ew_u; [L34] ew_u.value = (y) [L35] EXPR ew_u.parts.msw [L35] (hy) = ew_u.parts.msw [L36] EXPR ew_u.parts.lsw [L36] (ly) = ew_u.parts.lsw [L38] sx = hx & 0x80000000 [L39] hx ^= sx [L40] hy &= 0x7fffffff VAL [\old(x)=9223372032558759940, \old(y)=9223372032558759953, lx=9223372032558759950, ly=9223372032558759938, one_fmod=1, sx=14, x=9223372032558759940, y=9223372032558759953, Zero_fmod={5:0}] [L42-L43] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L44] return (x * y) / (x * y); VAL [\old(x)=9223372032558759940, \old(y)=9223372032558759953, hx=2146435072, lx=9223372032558759950, ly=9223372032558759938, one_fmod=1, sx=14, x=9223372032558759940, y=9223372032558759953, Zero_fmod={5:0}] [L184] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=9223372032558759942, one_fmod=1, x=9223372032558759940, y=9223372032558759953, Zero_fmod={5:0}] [L184] double res = fmod_double(x, y); [L187] COND TRUE res != x VAL [one_fmod=1, res=9223372032558759942, x=9223372032558759940, y=9223372032558759953, Zero_fmod={5:0}] [L188] reach_error() VAL [one_fmod=1, res=9223372032558759942, x=9223372032558759940, y=9223372032558759953, Zero_fmod={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 0.1s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 2088 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...