/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 22:35:14,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 22:35:14,069 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 22:35:14,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 22:35:14,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 22:35:14,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 22:35:14,147 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 22:35:14,149 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 22:35:14,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 22:35:14,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 22:35:14,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 22:35:14,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 22:35:14,156 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 22:35:14,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 22:35:14,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 22:35:14,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 22:35:14,164 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 22:35:14,178 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 22:35:14,190 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 22:35:14,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 22:35:14,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 22:35:14,192 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 22:35:14,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 22:35:14,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 22:35:14,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 22:35:14,192 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 22:35:14,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 22:35:14,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 22:35:14,193 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 22:35:14,193 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 22:35:14,193 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 22:35:14,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 22:35:14,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 22:35:14,194 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 22:35:14,194 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 22:35:14,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 22:35:14,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 22:35:14,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 22:35:14,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 22:35:14,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 22:35:14,196 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 22:35:14,540 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 22:35:14,564 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 22:35:14,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 22:35:14,569 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 22:35:14,569 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 22:35:14,570 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c [2021-02-23 22:35:14,645 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5706fb93c/4f87b36c894a408ea921e5a6ef5235f4/FLAG2354b6663 [2021-02-23 22:35:15,261 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 22:35:15,262 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c [2021-02-23 22:35:15,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5706fb93c/4f87b36c894a408ea921e5a6ef5235f4/FLAG2354b6663 [2021-02-23 22:35:15,581 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5706fb93c/4f87b36c894a408ea921e5a6ef5235f4 [2021-02-23 22:35:15,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 22:35:15,601 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 22:35:15,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 22:35:15,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 22:35:15,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 22:35:15,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:35:15" (1/1) ... [2021-02-23 22:35:15,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18cde0da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:35:15, skipping insertion in model container [2021-02-23 22:35:15,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:35:15" (1/1) ... [2021-02-23 22:35:15,619 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 22:35:15,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 22:35:15,819 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_0730a.c[2102,2115] [2021-02-23 22:35:15,823 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:35:15,833 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 22:35:15,864 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_0730a.c[2102,2115] [2021-02-23 22:35:15,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 22:35:15,884 INFO L208 MainTranslator]: Completed translation [2021-02-23 22:35:15,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:35:15 WrapperNode [2021-02-23 22:35:15,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 22:35:15,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 22:35:15,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 22:35:15,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 22:35:15,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:35:15" (1/1) ... [2021-02-23 22:35:15,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:35:15" (1/1) ... [2021-02-23 22:35:15,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:35:15" (1/1) ... [2021-02-23 22:35:15,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:35:15" (1/1) ... [2021-02-23 22:35:15,921 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:35:15" (1/1) ... [2021-02-23 22:35:15,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:35:15" (1/1) ... [2021-02-23 22:35:15,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:35:15" (1/1) ... [2021-02-23 22:35:15,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 22:35:15,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 22:35:15,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 22:35:15,935 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 22:35:15,936 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:35:15" (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 22:35:16,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 22:35:16,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 22:35:16,042 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 22:35:16,042 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2021-02-23 22:35:16,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2021-02-23 22:35:16,043 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 22:35:16,044 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 22:35:16,044 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 22:35:16,044 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 22:35:16,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 22:35:16,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2021-02-23 22:35:16,045 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2021-02-23 22:35:16,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 22:35:16,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 22:35:16,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 22:35:16,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 22:35:16,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 22:35:16,049 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2021-02-23 22:35:16,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 22:35:16,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 22:35:16,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 22:35:16,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 22:35:16,526 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 22:35:16,526 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-02-23 22:35:16,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:35:16 BoogieIcfgContainer [2021-02-23 22:35:16,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 22:35:16,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 22:35:16,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 22:35:16,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 22:35:16,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:35:15" (1/3) ... [2021-02-23 22:35:16,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45bdfe05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:35:16, skipping insertion in model container [2021-02-23 22:35:16,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:35:15" (2/3) ... [2021-02-23 22:35:16,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45bdfe05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:35:16, skipping insertion in model container [2021-02-23 22:35:16,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:35:16" (3/3) ... [2021-02-23 22:35:16,537 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730a.c [2021-02-23 22:35:16,544 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 22:35:16,549 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 22:35:16,583 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 22:35:16,635 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 22:35:16,635 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 22:35:16,635 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 22:35:16,635 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 22:35:16,635 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 22:35:16,636 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 22:35:16,636 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 22:35:16,636 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 22:35:16,675 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states. [2021-02-23 22:35:16,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-02-23 22:35:16,694 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:35:16,696 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:35:16,696 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:35:16,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:35:16,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1039374263, now seen corresponding path program 1 times [2021-02-23 22:35:16,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:35:16,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1055195043] [2021-02-23 22:35:16,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:35:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:35:16,978 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:35:16,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:35:16,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:35:16,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:35:17,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 22:35:17,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:35:17,075 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:35:17,076 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:35:17,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 22:35:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:35:17,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:35:17,100 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:35:17,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:35:17,102 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:35:17,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-02-23 22:35:17,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 22:35:17,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:35:17,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:35:17,112 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 22:35:17,112 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 22:35:17,122 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 22:35:17,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1055195043] [2021-02-23 22:35:17,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 22:35:17,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 22:35:17,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053793900] [2021-02-23 22:35:17,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 22:35:17,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 22:35:17,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 22:35:17,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 22:35:17,149 INFO L87 Difference]: Start difference. First operand 116 states. Second operand 4 states. [2021-02-23 22:35:17,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 22:35:17,535 INFO L93 Difference]: Finished difference Result 205 states and 244 transitions. [2021-02-23 22:35:17,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 22:35:17,537 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2021-02-23 22:35:17,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 22:35:17,549 INFO L225 Difference]: With dead ends: 205 [2021-02-23 22:35:17,549 INFO L226 Difference]: Without dead ends: 109 [2021-02-23 22:35:17,553 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 [2021-02-23 22:35:17,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-02-23 22:35:17,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2021-02-23 22:35:17,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2021-02-23 22:35:17,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 119 transitions. [2021-02-23 22:35:17,615 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 119 transitions. Word has length 46 [2021-02-23 22:35:17,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 22:35:17,616 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 119 transitions. [2021-02-23 22:35:17,616 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 22:35:17,616 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 119 transitions. [2021-02-23 22:35:17,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-02-23 22:35:17,619 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 22:35:17,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 22:35:17,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 22:35:17,620 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 22:35:17,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 22:35:17,621 INFO L82 PathProgramCache]: Analyzing trace with hash 1200530086, now seen corresponding path program 1 times [2021-02-23 22:35:17,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 22:35:17,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244507841] [2021-02-23 22:35:17,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 22:35:17,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:35:17,731 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:35:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 22:35:17,800 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 22:35:17,842 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 22:35:17,843 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 22:35:17,844 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 22:35:17,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:35:17 BoogieIcfgContainer [2021-02-23 22:35:17,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 22:35:17,911 INFO L168 Benchmark]: Toolchain (without parser) took 2321.38 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 136.0 MB in the beginning and 137.5 MB in the end (delta: -1.4 MB). Peak memory consumption was 31.9 MB. Max. memory is 8.0 GB. [2021-02-23 22:35:17,911 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 160.4 MB. Free memory is still 133.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 22:35:17,912 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.21 ms. Allocated memory is still 160.4 MB. Free memory was 134.9 MB in the beginning and 124.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-23 22:35:17,913 INFO L168 Benchmark]: Boogie Preprocessor took 47.46 ms. Allocated memory is still 160.4 MB. Free memory was 124.0 MB in the beginning and 122.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 22:35:17,914 INFO L168 Benchmark]: RCFGBuilder took 594.06 ms. Allocated memory is still 160.4 MB. Free memory was 121.9 MB in the beginning and 130.4 MB in the end (delta: -8.5 MB). Peak memory consumption was 17.9 MB. Max. memory is 8.0 GB. [2021-02-23 22:35:17,915 INFO L168 Benchmark]: TraceAbstraction took 1378.55 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 129.9 MB in the beginning and 137.5 MB in the end (delta: -7.6 MB). Peak memory consumption was 25.5 MB. Max. memory is 8.0 GB. [2021-02-23 22:35:17,919 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 160.4 MB. Free memory is still 133.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 282.21 ms. Allocated memory is still 160.4 MB. Free memory was 134.9 MB in the beginning and 124.0 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.46 ms. Allocated memory is still 160.4 MB. Free memory was 124.0 MB in the beginning and 122.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 594.06 ms. Allocated memory is still 160.4 MB. Free memory was 121.9 MB in the beginning and 130.4 MB in the end (delta: -8.5 MB). Peak memory consumption was 17.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1378.55 ms. Allocated memory was 160.4 MB in the beginning and 192.9 MB in the end (delta: 32.5 MB). Free memory was 129.9 MB in the beginning and 137.5 MB in the end (delta: -7.6 MB). Peak memory consumption was 25.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 109]: 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 29, overapproximation of bitwiseAnd at line 91. Possible FailurePath: [L14] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [\old(one_sqrt)=4294967300, \old(tiny_sqrt)=4294967299, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L103] float x = 1.0f / 0.0f; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L105] CALL, EXPR __ieee754_sqrtf(x) VAL [\old(x)=4294967307, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L17] float z; VAL [\old(x)=4294967307, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967307] [L18] __uint32_t r, hx; VAL [\old(x)=4294967307, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967307] [L19] __int32_t ix, s, q, m, t, i; VAL [\old(x)=4294967307, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967307] [L22] ieee_float_shape_type gf_u; VAL [\old(x)=4294967307, gf_u={8:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967307] [L23] gf_u.value = (x) VAL [\old(x)=4294967307, gf_u={8:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967307] [L24] EXPR gf_u.word VAL [\old(x)=4294967307, gf_u={8:0}, gf_u.word=4294967295, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967307] [L24] (ix) = gf_u.word VAL [\old(x)=4294967307, gf_u={8:0}, gf_u.word=4294967295, ix=-1, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967307] [L26] hx = ix & 0x7fffffff VAL [\old(x)=4294967307, ix=-1, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967307] [L28] COND TRUE !((hx) < 0x7f800000L) VAL [\old(x)=4294967307, hx=2139095040, ix=-1, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967307] [L29] return x * x + x; VAL [\old(x)=4294967307, hx=2139095040, ix=-1, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967307] [L105] RET, EXPR __ieee754_sqrtf(x) VAL [__ieee754_sqrtf(x)=4294967302, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967307] [L105] float res = __ieee754_sqrtf(x); VAL [__ieee754_sqrtf(x)=4294967302, one_sqrt=1, res=4294967302, tiny_sqrt=1/1000000000000000000000000000000, x=4294967307] [L108] CALL, EXPR isinf_float(res) VAL [\old(x)=4294967302, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L85] __int32_t ix; VAL [\old(x)=4294967302, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967302] [L87] ieee_float_shape_type gf_u; VAL [\old(x)=4294967302, gf_u={3:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967302] [L88] gf_u.value = (x) VAL [\old(x)=4294967302, gf_u={3:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967302] [L89] EXPR gf_u.word VAL [\old(x)=4294967302, gf_u={3:0}, gf_u.word=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967302] [L89] (ix) = gf_u.word VAL [\old(x)=4294967302, gf_u={3:0}, gf_u.word=0, ix=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967302] [L91] ix &= 0x7fffffff VAL [\old(x)=4294967302, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967302] [L92] return ((ix) == 0x7f800000L); VAL [\old(x)=4294967302, \result=0, ix=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=4294967302] [L108] RET, EXPR isinf_float(res) VAL [isinf_float(res)=0, one_sqrt=1, res=4294967302, tiny_sqrt=1/1000000000000000000000000000000, x=4294967307] [L108] COND TRUE !isinf_float(res) VAL [isinf_float(res)=0, one_sqrt=1, res=4294967302, tiny_sqrt=1/1000000000000000000000000000000, x=4294967307] [L109] reach_error() VAL [one_sqrt=1, res=4294967302, tiny_sqrt=1/1000000000000000000000000000000, x=4294967307] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 119 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 122 SDtfs, 27 SDslu, 90 SDs, 0 SdLazy, 128 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=116occurred 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, 106 NumberOfCodeBlocks, 106 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 4725 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...