/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_1072b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:13:18,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:13:18,738 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:13:18,798 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:13:18,799 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:13:18,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:13:18,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:13:18,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:13:18,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:13:18,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:13:18,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:13:18,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:13:18,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:13:18,848 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:13:18,850 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:13:18,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:13:18,857 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:13:18,858 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:13:18,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:13:18,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:13:18,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:13:18,877 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:13:18,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:13:18,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:13:18,883 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:13:18,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:13:18,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:13:18,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:13:18,895 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 [2021-02-23 13:13:18,929 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:13:18,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:13:18,931 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:13:18,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:13:18,933 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:13:18,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:13:18,933 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:13:18,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:13:18,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:13:18,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:13:18,935 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:13:18,935 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:13:18,935 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:13:18,936 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:13:18,936 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:13:18,936 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:13:18,936 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:13:18,936 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:13:18,937 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:13:18,937 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:13:18,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:13:18,937 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:13:18,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:13:18,938 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:13:18,938 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:13:18,938 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:13:18,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:13:18,938 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:13:18,939 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:13:19,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:13:19,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:13:19,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:13:19,388 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:13:19,389 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:13:19,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1072b.c [2021-02-23 13:13:19,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f05b9f9f6/296feecd57d344bea5be6bb75f071b18/FLAG859dbb27c [2021-02-23 13:13:20,105 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:13:20,105 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1072b.c [2021-02-23 13:13:20,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f05b9f9f6/296feecd57d344bea5be6bb75f071b18/FLAG859dbb27c [2021-02-23 13:13:20,465 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f05b9f9f6/296feecd57d344bea5be6bb75f071b18 [2021-02-23 13:13:20,475 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:13:20,488 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:13:20,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:13:20,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:13:20,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:13:20,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:13:20" (1/1) ... [2021-02-23 13:13:20,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bf131c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:20, skipping insertion in model container [2021-02-23 13:13:20,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:13:20" (1/1) ... [2021-02-23 13:13:20,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:13:20,522 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:13:20,701 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_1072b.c[1610,1623] [2021-02-23 13:13:20,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:13:20,715 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:13:20,741 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_1072b.c[1610,1623] [2021-02-23 13:13:20,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:13:20,760 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:13:20,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:20 WrapperNode [2021-02-23 13:13:20,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:13:20,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:13:20,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:13:20,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:13:20,775 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:20" (1/1) ... [2021-02-23 13:13:20,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:20" (1/1) ... [2021-02-23 13:13:20,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:20" (1/1) ... [2021-02-23 13:13:20,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:20" (1/1) ... [2021-02-23 13:13:20,796 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:20" (1/1) ... [2021-02-23 13:13:20,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:20" (1/1) ... [2021-02-23 13:13:20,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:20" (1/1) ... [2021-02-23 13:13:20,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:13:20,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:13:20,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:13:20,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:13:20,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:13:20,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:13:20,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:13:20,925 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:13:20,925 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_float [2021-02-23 13:13:20,925 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2021-02-23 13:13:20,925 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:13:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:13:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:13:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:13:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:13:20,926 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_float [2021-02-23 13:13:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 13:13:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:13:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:13:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:13:20,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 13:13:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2021-02-23 13:13:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:13:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:13:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:13:20,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:13:21,493 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:13:21,494 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-02-23 13:13:21,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:13:21 BoogieIcfgContainer [2021-02-23 13:13:21,496 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:13:21,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:13:21,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:13:21,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:13:21,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:13:20" (1/3) ... [2021-02-23 13:13:21,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46996352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:13:21, skipping insertion in model container [2021-02-23 13:13:21,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:20" (2/3) ... [2021-02-23 13:13:21,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46996352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:13:21, skipping insertion in model container [2021-02-23 13:13:21,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:13:21" (3/3) ... [2021-02-23 13:13:21,507 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1072b.c [2021-02-23 13:13:21,519 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:13:21,524 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:13:21,546 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:13:21,577 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:13:21,577 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:13:21,578 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:13:21,578 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:13:21,578 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:13:21,578 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:13:21,578 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:13:21,579 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:13:21,599 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2021-02-23 13:13:21,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-23 13:13:21,607 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:13:21,608 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] [2021-02-23 13:13:21,608 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:13:21,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:13:21,616 INFO L82 PathProgramCache]: Analyzing trace with hash -444863902, now seen corresponding path program 1 times [2021-02-23 13:13:21,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:13:21,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093101824] [2021-02-23 13:13:21,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:13:21,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:21,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:21,862 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:21,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:21,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:21,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:13:21,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:21,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:21,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:21,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:13:21,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:21,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:21,992 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:21,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:21,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:21,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 13:13:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:22,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:22,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:22,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:22,004 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:22,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:13:22,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093101824] [2021-02-23 13:13:22,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:13:22,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 13:13:22,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871714295] [2021-02-23 13:13:22,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 13:13:22,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:13:22,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 13:13:22,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 13:13:22,040 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 4 states. [2021-02-23 13:13:22,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:13:22,220 INFO L93 Difference]: Finished difference Result 66 states and 89 transitions. [2021-02-23 13:13:22,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:13:22,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2021-02-23 13:13:22,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:13:22,229 INFO L225 Difference]: With dead ends: 66 [2021-02-23 13:13:22,230 INFO L226 Difference]: Without dead ends: 33 [2021-02-23 13:13:22,235 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 [2021-02-23 13:13:22,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-02-23 13:13:22,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-02-23 13:13:22,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-02-23 13:13:22,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-02-23 13:13:22,303 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 24 [2021-02-23 13:13:22,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:13:22,304 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-02-23 13:13:22,304 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 13:13:22,305 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-02-23 13:13:22,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-23 13:13:22,306 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:13:22,306 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] [2021-02-23 13:13:22,307 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:13:22,308 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:13:22,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:13:22,310 INFO L82 PathProgramCache]: Analyzing trace with hash -525781756, now seen corresponding path program 1 times [2021-02-23 13:13:22,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:13:22,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658004294] [2021-02-23 13:13:22,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:13:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:13:22,463 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:13:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:13:22,512 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:13:22,547 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:13:22,547 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:13:22,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:13:22,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:13:22 BoogieIcfgContainer [2021-02-23 13:13:22,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:13:22,599 INFO L168 Benchmark]: Toolchain (without parser) took 2120.12 ms. Allocated memory is still 172.0 MB. Free memory was 146.8 MB in the beginning and 99.9 MB in the end (delta: 46.9 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:22,602 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 172.0 MB. Free memory is still 142.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:13:22,604 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.36 ms. Allocated memory is still 172.0 MB. Free memory was 145.5 MB in the beginning and 135.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:22,605 INFO L168 Benchmark]: Boogie Preprocessor took 56.51 ms. Allocated memory is still 172.0 MB. Free memory was 135.3 MB in the beginning and 133.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:22,606 INFO L168 Benchmark]: RCFGBuilder took 674.00 ms. Allocated memory is still 172.0 MB. Free memory was 133.6 MB in the beginning and 152.3 MB in the end (delta: -18.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:22,607 INFO L168 Benchmark]: TraceAbstraction took 1097.01 ms. Allocated memory is still 172.0 MB. Free memory was 151.8 MB in the beginning and 99.9 MB in the end (delta: 51.9 MB). Peak memory consumption was 52.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:22,619 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 172.0 MB. Free memory is still 142.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 271.36 ms. Allocated memory is still 172.0 MB. Free memory was 145.5 MB in the beginning and 135.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.51 ms. Allocated memory is still 172.0 MB. Free memory was 135.3 MB in the beginning and 133.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 674.00 ms. Allocated memory is still 172.0 MB. Free memory was 133.6 MB in the beginning and 152.3 MB in the end (delta: -18.6 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1097.01 ms. Allocated memory is still 172.0 MB. Free memory was 151.8 MB in the beginning and 99.9 MB in the end (delta: 51.9 MB). Peak memory consumption was 52.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 68]: 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 39, overapproximation of bitwiseAnd at line 52. Possible FailurePath: [L63] float x = -1.0f / 0.0f; [L64] CALL, EXPR trunc_float(x) VAL [\old(x)=8589934596] [L14] __int32_t signbit, w, exponent_less_127; VAL [\old(x)=8589934596, x=8589934596] [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L20] signbit = w & 0x80000000 [L21] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=8589934596, exponent_less_127=255, signbit=-3, w=-2, x=8589934596] [L22] COND FALSE !(exponent_less_127 < 23) VAL [\old(x)=8589934596, exponent_less_127=255, signbit=-3, w=-2, x=8589934596] [L38] COND TRUE exponent_less_127 == 255 [L39] return x + x; VAL [\old(x)=8589934596, exponent_less_127=255, signbit=-3, w=-2, x=8589934596] [L64] RET, EXPR trunc_float(x) VAL [trunc_float(x)=8589934595, x=8589934596] [L64] float res = trunc_float(x); [L67] CALL, EXPR isinf_float(res) VAL [\old(x)=8589934595] [L46] __int32_t ix; VAL [\old(x)=8589934595, x=8589934595] [L48] ieee_float_shape_type gf_u; [L49] gf_u.value = (x) [L50] EXPR gf_u.word [L50] (ix) = gf_u.word [L52] ix &= 0x7fffffff [L53] return ((ix) == 0x7f800000L); VAL [\old(x)=8589934595, \result=0, ix=0, x=8589934595] [L67] RET, EXPR isinf_float(res) VAL [isinf_float(res)=0, res=8589934595, x=8589934596] [L67] COND TRUE !isinf_float(res) [L68] reach_error() VAL [res=8589934595, x=8589934596] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 6 SDslu, 30 SDs, 0 SdLazy, 37 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1771 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...