/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_1072a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 15:47:46,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 15:47:46,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 15:47:46,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 15:47:46,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 15:47:46,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 15:47:46,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 15:47:46,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 15:47:46,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 15:47:46,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 15:47:46,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 15:47:46,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 15:47:46,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 15:47:46,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 15:47:46,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 15:47:46,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 15:47:46,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 15:47:46,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 15:47:46,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 15:47:46,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 15:47:46,876 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 15:47:46,902 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 15:47:46,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 15:47:46,904 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 15:47:46,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 15:47:46,904 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 15:47:46,904 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 15:47:46,905 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 15:47:46,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 15:47:46,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 15:47:46,905 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 15:47:46,905 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 15:47:46,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 15:47:46,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 15:47:46,906 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 15:47:46,906 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 15:47:46,907 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 15:47:46,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 15:47:46,907 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 15:47:46,907 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 15:47:46,907 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 15:47:46,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:47:46,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 15:47:46,908 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 15:47:46,908 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 15:47:46,909 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 15:47:46,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 15:47:46,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 15:47:46,909 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 15:47:46,910 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 15:47:47,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 15:47:47,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 15:47:47,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 15:47:47,296 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 15:47:47,297 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 15:47:47,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1072a.c [2021-02-21 15:47:47,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e50326778/7e476d4eea914ccab55b24545ee6d6dd/FLAG40acbe560 [2021-02-21 15:47:48,010 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 15:47:48,011 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1072a.c [2021-02-21 15:47:48,018 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e50326778/7e476d4eea914ccab55b24545ee6d6dd/FLAG40acbe560 [2021-02-21 15:47:48,378 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e50326778/7e476d4eea914ccab55b24545ee6d6dd [2021-02-21 15:47:48,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 15:47:48,395 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 15:47:48,396 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:48,396 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 15:47:48,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 15:47:48,401 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:48" (1/1) ... [2021-02-21 15:47:48,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45c2d738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:48, skipping insertion in model container [2021-02-21 15:47:48,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:47:48" (1/1) ... [2021-02-21 15:47:48,411 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 15:47:48,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 15:47:48,591 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_1072a.c[1607,1620] [2021-02-21 15:47:48,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:48,604 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 15:47:48,628 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_1072a.c[1607,1620] [2021-02-21 15:47:48,629 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:47:48,646 INFO L208 MainTranslator]: Completed translation [2021-02-21 15:47:48,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:48 WrapperNode [2021-02-21 15:47:48,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 15:47:48,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 15:47:48,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 15:47:48,648 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 15:47:48,661 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:48" (1/1) ... [2021-02-21 15:47:48,661 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:48" (1/1) ... [2021-02-21 15:47:48,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:48" (1/1) ... [2021-02-21 15:47:48,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:48" (1/1) ... [2021-02-21 15:47:48,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:48" (1/1) ... [2021-02-21 15:47:48,687 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:48" (1/1) ... [2021-02-21 15:47:48,688 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:48" (1/1) ... [2021-02-21 15:47:48,691 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 15:47:48,692 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 15:47:48,692 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 15:47:48,692 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 15:47:48,693 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:48" (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 15:47:48,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 15:47:48,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 15:47:48,776 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 15:47:48,777 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_float [2021-02-21 15:47:48,777 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2021-02-21 15:47:48,777 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 15:47:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 15:47:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 15:47:48,777 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 15:47:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 15:47:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_float [2021-02-21 15:47:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 15:47:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 15:47:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 15:47:48,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 15:47:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 15:47:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2021-02-21 15:47:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 15:47:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 15:47:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 15:47:48,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 15:47:49,218 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 15:47:49,221 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-02-21 15:47:49,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:49 BoogieIcfgContainer [2021-02-21 15:47:49,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 15:47:49,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 15:47:49,228 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 15:47:49,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 15:47:49,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:47:48" (1/3) ... [2021-02-21 15:47:49,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a09548b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:49, skipping insertion in model container [2021-02-21 15:47:49,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:47:48" (2/3) ... [2021-02-21 15:47:49,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a09548b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:47:49, skipping insertion in model container [2021-02-21 15:47:49,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:47:49" (3/3) ... [2021-02-21 15:47:49,239 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1072a.c [2021-02-21 15:47:49,247 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 15:47:49,253 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 15:47:49,276 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 15:47:49,325 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 15:47:49,325 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 15:47:49,326 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 15:47:49,326 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 15:47:49,326 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 15:47:49,326 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 15:47:49,326 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 15:47:49,326 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 15:47:49,358 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2021-02-21 15:47:49,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-21 15:47:49,372 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:49,373 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] [2021-02-21 15:47:49,374 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:49,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:49,384 INFO L82 PathProgramCache]: Analyzing trace with hash -444863902, now seen corresponding path program 1 times [2021-02-21 15:47:49,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:49,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956400214] [2021-02-21 15:47:49,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:49,677 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:49,679 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:49,681 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:49,682 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:49,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:47:49,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:49,783 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:49,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:49,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:47:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:49,819 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:49,820 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:49,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:49,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:49,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-21 15:47:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:47:49,838 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:49,839 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:49,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:47:49,841 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:47:49,851 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 15:47:49,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956400214] [2021-02-21 15:47:49,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:47:49,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 15:47:49,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690056763] [2021-02-21 15:47:49,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 15:47:49,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:47:49,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 15:47:49,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 15:47:49,879 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 4 states. [2021-02-21 15:47:50,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:47:50,076 INFO L93 Difference]: Finished difference Result 66 states and 89 transitions. [2021-02-21 15:47:50,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 15:47:50,078 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2021-02-21 15:47:50,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:47:50,086 INFO L225 Difference]: With dead ends: 66 [2021-02-21 15:47:50,086 INFO L226 Difference]: Without dead ends: 33 [2021-02-21 15:47:50,090 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 15:47:50,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-02-21 15:47:50,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-02-21 15:47:50,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-02-21 15:47:50,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2021-02-21 15:47:50,138 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 24 [2021-02-21 15:47:50,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:47:50,138 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2021-02-21 15:47:50,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 15:47:50,138 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2021-02-21 15:47:50,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-21 15:47:50,140 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:47:50,140 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 15:47:50,140 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 15:47:50,140 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:47:50,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:47:50,141 INFO L82 PathProgramCache]: Analyzing trace with hash -525781756, now seen corresponding path program 1 times [2021-02-21 15:47:50,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:47:50,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478767049] [2021-02-21 15:47:50,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:47:50,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:50,223 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:50,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:47:50,278 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:47:50,323 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 15:47:50,323 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 15:47:50,325 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 15:47:50,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:47:50 BoogieIcfgContainer [2021-02-21 15:47:50,387 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 15:47:50,389 INFO L168 Benchmark]: Toolchain (without parser) took 2005.72 ms. Allocated memory is still 155.2 MB. Free memory was 130.0 MB in the beginning and 82.1 MB in the end (delta: 47.9 MB). Peak memory consumption was 47.5 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:50,389 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 155.2 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:47:50,390 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.91 ms. Allocated memory is still 155.2 MB. Free memory was 128.9 MB in the beginning and 118.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:50,391 INFO L168 Benchmark]: Boogie Preprocessor took 43.52 ms. Allocated memory is still 155.2 MB. Free memory was 118.8 MB in the beginning and 117.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:50,392 INFO L168 Benchmark]: RCFGBuilder took 531.45 ms. Allocated memory is still 155.2 MB. Free memory was 117.0 MB in the beginning and 133.9 MB in the end (delta: -16.9 MB). Peak memory consumption was 19.2 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:50,393 INFO L168 Benchmark]: TraceAbstraction took 1159.04 ms. Allocated memory is still 155.2 MB. Free memory was 133.5 MB in the beginning and 82.1 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 8.0 GB. [2021-02-21 15:47:50,396 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 155.2 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 250.91 ms. Allocated memory is still 155.2 MB. Free memory was 128.9 MB in the beginning and 118.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.52 ms. Allocated memory is still 155.2 MB. Free memory was 118.8 MB in the beginning and 117.0 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 531.45 ms. Allocated memory is still 155.2 MB. Free memory was 117.0 MB in the beginning and 133.9 MB in the end (delta: -16.9 MB). Peak memory consumption was 19.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1159.04 ms. Allocated memory is still 155.2 MB. Free memory was 133.5 MB in the beginning and 82.1 MB in the end (delta: 51.4 MB). Peak memory consumption was 51.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 69]: 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 40, overapproximation of bitwiseAnd at line 53. Possible FailurePath: [L64] float x = 1.0f / 0.0f; [L65] CALL, EXPR trunc_float(x) VAL [\old(x)=8589934596] [L15] __int32_t signbit, w, exponent_less_127; VAL [\old(x)=8589934596, x=8589934596] [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (w) = gf_u.word [L21] signbit = w & 0x80000000 [L22] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=8589934596, exponent_less_127=255, signbit=-3, w=-2, x=8589934596] [L23] COND FALSE !(exponent_less_127 < 23) VAL [\old(x)=8589934596, exponent_less_127=255, signbit=-3, w=-2, x=8589934596] [L39] COND TRUE exponent_less_127 == 255 [L40] return x + x; VAL [\old(x)=8589934596, exponent_less_127=255, signbit=-3, w=-2, x=8589934596] [L65] RET, EXPR trunc_float(x) VAL [trunc_float(x)=8589934595, x=8589934596] [L65] float res = trunc_float(x); [L68] CALL, EXPR isinf_float(res) VAL [\old(x)=8589934595] [L47] __int32_t ix; VAL [\old(x)=8589934595, x=8589934595] [L49] ieee_float_shape_type gf_u; [L50] gf_u.value = (x) [L51] EXPR gf_u.word [L51] (ix) = gf_u.word [L53] ix &= 0x7fffffff [L54] return ((ix) == 0x7f800000L); VAL [\old(x)=8589934595, \result=0, ix=0, x=8589934595] [L68] RET, EXPR isinf_float(res) VAL [isinf_float(res)=0, res=8589934595, x=8589934596] [L68] COND TRUE !isinf_float(res) [L69] 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: 1.0s, 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...