/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/float_req_bl_1012a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 15:47:35,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 15:47:35,716 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 15:47:35,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 15:47:35,779 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 15:47:35,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 15:47:35,787 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 15:47:35,797 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 15:47:35,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 15:47:35,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 15:47:35,809 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 15:47:35,811 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 15:47:35,811 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 15:47:35,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 15:47:35,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 15:47:35,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 15:47:35,823 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 15:47:35,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 15:47:35,839 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 15:47:35,841 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 15:47:35,843 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 15:47:35,844 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 15:47:35,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 15:47:35,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 15:47:35,849 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 15:47:35,867 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 15:47:35,868 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 15:47:35,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 15:47:35,870 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 15:47:35,926 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 15:47:35,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 15:47:35,931 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 15:47:35,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 15:47:35,932 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 15:47:35,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 15:47:35,932 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 15:47:35,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 15:47:35,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 15:47:35,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 15:47:35,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 15:47:35,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 15:47:35,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 15:47:35,936 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 15:47:35,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 15:47:35,936 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 15:47:35,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 15:47:35,937 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 15:47:35,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 15:47:35,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 15:47:35,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:47:35,938 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 15:47:35,938 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 15:47:35,939 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 15:47:35,939 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 15:47:35,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 15:47:35,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 15:47:35,940 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 15:47:35,940 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 15:47:36,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 15:47:36,456 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 15:47:36,460 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 15:47:36,461 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 15:47:36,462 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 15:47:36,463 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1012a.c [2021-02-21 15:47:36,553 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5009eae91/3ab40e51707c4228a46720774ace1210/FLAG1b6f24bbf [2021-02-21 15:47:37,167 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 15:47:37,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1012a.c [2021-02-21 15:47:37,177 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5009eae91/3ab40e51707c4228a46720774ace1210/FLAG1b6f24bbf [2021-02-21 15:47:37,530 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5009eae91/3ab40e51707c4228a46720774ace1210 [2021-02-21 15:47:37,534 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 15:47:37,551 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 15:47:37,557 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:37,557 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 15:47:37,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 15:47:37,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:37" (1/1) ... [2021-02-21 15:47:37,566 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50b57ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:37, skipping insertion in model container [2021-02-21 15:47:37,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:37" (1/1) ... [2021-02-21 15:47:37,576 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 15:47:37,596 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 15:47:37,808 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/float_req_bl_1012a.c[1156,1169] [2021-02-21 15:47:37,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:37,823 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 15:47:37,846 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/float_req_bl_1012a.c[1156,1169] [2021-02-21 15:47:37,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:37,865 INFO L208 MainTranslator]: Completed translation [2021-02-21 15:47:37,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:37 WrapperNode [2021-02-21 15:47:37,866 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:37,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 15:47:37,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 15:47:37,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 15:47:37,882 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:37" (1/1) ... [2021-02-21 15:47:37,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:37" (1/1) ... [2021-02-21 15:47:37,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:37" (1/1) ... [2021-02-21 15:47:37,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:37" (1/1) ... [2021-02-21 15:47:37,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:37" (1/1) ... [2021-02-21 15:47:37,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:37" (1/1) ... [2021-02-21 15:47:37,909 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:37" (1/1) ... [2021-02-21 15:47:37,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 15:47:37,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 15:47:37,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 15:47:37,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 15:47:37,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:37" (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 15:47:38,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 15:47:38,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 15:47:38,045 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 15:47:38,045 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2021-02-21 15:47:38,046 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2021-02-21 15:47:38,046 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 15:47:38,046 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 15:47:38,046 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 15:47:38,047 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 15:47:38,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 15:47:38,048 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2021-02-21 15:47:38,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 15:47:38,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 15:47:38,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 15:47:38,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 15:47:38,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 15:47:38,050 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2021-02-21 15:47:38,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 15:47:38,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 15:47:38,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 15:47:38,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 15:47:38,560 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 15:47:38,561 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-21 15:47:38,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:38 BoogieIcfgContainer [2021-02-21 15:47:38,563 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 15:47:38,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 15:47:38,565 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 15:47:38,568 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 15:47:38,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:47:37" (1/3) ... [2021-02-21 15:47:38,569 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426ae981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:38, skipping insertion in model container [2021-02-21 15:47:38,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:37" (2/3) ... [2021-02-21 15:47:38,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@426ae981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:38, skipping insertion in model container [2021-02-21 15:47:38,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:38" (3/3) ... [2021-02-21 15:47:38,572 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1012a.c [2021-02-21 15:47:38,579 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 15:47:38,583 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 15:47:38,615 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 15:47:38,643 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 15:47:38,643 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 15:47:38,643 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 15:47:38,643 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 15:47:38,643 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 15:47:38,644 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 15:47:38,644 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 15:47:38,644 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 15:47:38,662 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2021-02-21 15:47:38,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-21 15:47:38,669 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:38,669 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] [2021-02-21 15:47:38,670 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:38,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:38,677 INFO L82 PathProgramCache]: Analyzing trace with hash -2117634597, now seen corresponding path program 1 times [2021-02-21 15:47:38,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:38,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121795204] [2021-02-21 15:47:38,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:38,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:38,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:38,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:38,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:38,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:47:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:38,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:38,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:38,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:47:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:38,956 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:38,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:38,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:38,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:38,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 15:47:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:38,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:38,967 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:38,968 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:38,969 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:38,976 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 15:47:38,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121795204] [2021-02-21 15:47:38,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:47:38,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 15:47:38,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063845675] [2021-02-21 15:47:38,984 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 15:47:38,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:47:38,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 15:47:39,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 15:47:39,002 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 4 states. [2021-02-21 15:47:39,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:47:39,130 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2021-02-21 15:47:39,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 15:47:39,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2021-02-21 15:47:39,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:47:39,141 INFO L225 Difference]: With dead ends: 54 [2021-02-21 15:47:39,141 INFO L226 Difference]: Without dead ends: 27 [2021-02-21 15:47:39,144 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 [2021-02-21 15:47:39,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-02-21 15:47:39,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-02-21 15:47:39,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-02-21 15:47:39,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 26 transitions. [2021-02-21 15:47:39,191 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 26 transitions. Word has length 23 [2021-02-21 15:47:39,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:47:39,191 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 26 transitions. [2021-02-21 15:47:39,192 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 15:47:39,192 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 26 transitions. [2021-02-21 15:47:39,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-21 15:47:39,193 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:39,193 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] [2021-02-21 15:47:39,194 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 15:47:39,194 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:39,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:39,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1796963793, now seen corresponding path program 1 times [2021-02-21 15:47:39,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:39,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42553431] [2021-02-21 15:47:39,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:39,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:39,282 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:39,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:39,355 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:39,403 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 15:47:39,403 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 15:47:39,405 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 15:47:39,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:47:39 BoogieIcfgContainer [2021-02-21 15:47:39,438 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 15:47:39,440 INFO L168 Benchmark]: Toolchain (without parser) took 1902.93 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 84.2 MB in the end (delta: 41.2 MB). Peak memory consumption was 40.4 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:39,441 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:47:39,442 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.22 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 114.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:39,443 INFO L168 Benchmark]: Boogie Preprocessor took 44.37 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 112.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:39,444 INFO L168 Benchmark]: RCFGBuilder took 650.00 ms. Allocated memory is still 151.0 MB. Free memory was 112.9 MB in the beginning and 131.9 MB in the end (delta: -19.0 MB). Peak memory consumption was 19.4 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:39,445 INFO L168 Benchmark]: TraceAbstraction took 874.01 ms. Allocated memory is still 151.0 MB. Free memory was 131.4 MB in the beginning and 84.2 MB in the end (delta: 47.2 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:39,449 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 310.22 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 114.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.37 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 112.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 650.00 ms. Allocated memory is still 151.0 MB. Free memory was 112.9 MB in the beginning and 131.9 MB in the end (delta: -19.0 MB). Peak memory consumption was 19.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 874.01 ms. Allocated memory is still 151.0 MB. Free memory was 131.4 MB in the beginning and 84.2 MB in the end (delta: 47.2 MB). Peak memory consumption was 46.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 53]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 48, overapproximation of bitwiseAnd at line 36. Possible FailurePath: [L48] float x = 1.0f / 0.0f; [L49] CALL, EXPR fabs_float(x) VAL [\old(x)=4294967302] [L14] __uint32_t ix; VAL [\old(x)=4294967302, x=4294967302] [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (ix) = gf_u.word [L21] ieee_float_shape_type sf_u; [L22] sf_u.word = (ix & 0x7fffffff) [L23] EXPR sf_u.value [L23] (x) = sf_u.value [L25] return x; VAL [\old(x)=4294967302, \result=4294967297, ix=7, x=4294967297] [L49] RET, EXPR fabs_float(x) VAL [fabs_float(x)=4294967297, x=4294967302] [L49] float res = fabs_float(x); [L52] CALL, EXPR isinf_float(res) VAL [\old(x)=4294967297] [L30] __int32_t ix; VAL [\old(x)=4294967297, x=4294967297] [L32] ieee_float_shape_type gf_u; [L33] gf_u.value = (x) [L34] EXPR gf_u.word [L34] (ix) = gf_u.word [L36] ix &= 0x7fffffff [L37] return ((ix) == 0x7f800000L); VAL [\old(x)=4294967297, \result=0, ix=0, x=4294967297] [L52] RET, EXPR isinf_float(res) VAL [isinf_float(res)=0, res=4294967297, x=4294967302] [L52] COND TRUE !isinf_float(res) [L53] reach_error() VAL [res=4294967297, x=4294967302] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 6 SDslu, 22 SDs, 0 SdLazy, 27 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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=31occurred 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, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1672 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...