/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_1211a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:13:26,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:13:26,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:13:26,270 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:13:26,271 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:13:26,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:13:26,274 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:13:26,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:13:26,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:13:26,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:13:26,282 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:13:26,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:13:26,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:13:26,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:13:26,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:13:26,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:13:26,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:13:26,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:13:26,295 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:13:26,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:13:26,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:13:26,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:13:26,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:13:26,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:13:26,335 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:13:26,359 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:13:26,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:13:26,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:13:26,361 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 13:13:26,422 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:13:26,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:13:26,424 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:13:26,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:13:26,425 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:13:26,426 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:13:26,426 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:13:26,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:13:26,427 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:13:26,427 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:13:26,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:13:26,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:13:26,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:13:26,430 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:13:26,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:13:26,430 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:13:26,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:13:26,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:13:26,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:13:26,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:13:26,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:13:26,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:13:26,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:13:26,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:13:26,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:13:26,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:13:26,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:13:26,432 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:13:26,432 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:13:26,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:13:26,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:13:26,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:13:26,922 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:13:26,925 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:13:26,926 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1211a.c [2021-02-23 13:13:27,023 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d70edc5ad/933093244a5d46deb5cf432e4e020a38/FLAG6be0685d2 [2021-02-23 13:13:27,599 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:13:27,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1211a.c [2021-02-23 13:13:27,614 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d70edc5ad/933093244a5d46deb5cf432e4e020a38/FLAG6be0685d2 [2021-02-23 13:13:27,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d70edc5ad/933093244a5d46deb5cf432e4e020a38 [2021-02-23 13:13:27,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:13:27,938 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:13:27,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:13:27,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:13:27,948 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:13:27,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:13:27" (1/1) ... [2021-02-23 13:13:27,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d39a909 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:27, skipping insertion in model container [2021-02-23 13:13:27,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:13:27" (1/1) ... [2021-02-23 13:13:27,963 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:13:27,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:13:28,178 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_1211a.c[2576,2589] [2021-02-23 13:13:28,182 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:13:28,193 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:13:28,230 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_1211a.c[2576,2589] [2021-02-23 13:13:28,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:13:28,251 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:13:28,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:28 WrapperNode [2021-02-23 13:13:28,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:13:28,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:13:28,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:13:28,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:13:28,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:28" (1/1) ... [2021-02-23 13:13:28,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:28" (1/1) ... [2021-02-23 13:13:28,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:28" (1/1) ... [2021-02-23 13:13:28,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:28" (1/1) ... [2021-02-23 13:13:28,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:28" (1/1) ... [2021-02-23 13:13:28,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:28" (1/1) ... [2021-02-23 13:13:28,310 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:28" (1/1) ... [2021-02-23 13:13:28,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:13:28,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:13:28,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:13:28,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:13:28,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:28" (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 13:13:28,457 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:13:28,458 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:13:28,458 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:13:28,458 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_float [2021-02-23 13:13:28,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2021-02-23 13:13:28,459 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2021-02-23 13:13:28,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:13:28,459 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:13:28,460 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:13:28,461 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:13:28,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:13:28,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2021-02-23 13:13:28,462 INFO L130 BoogieDeclarations]: Found specification of procedure modf_float [2021-02-23 13:13:28,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 13:13:28,466 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:13:28,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:13:28,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:13:28,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 13:13:28,468 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2021-02-23 13:13:28,469 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2021-02-23 13:13:28,469 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:13:28,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-02-23 13:13:28,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:13:28,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:13:28,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:13:29,322 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:13:29,323 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-02-23 13:13:29,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:13:29 BoogieIcfgContainer [2021-02-23 13:13:29,325 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:13:29,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:13:29,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:13:29,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:13:29,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:13:27" (1/3) ... [2021-02-23 13:13:29,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66af7066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:13:29, skipping insertion in model container [2021-02-23 13:13:29,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:28" (2/3) ... [2021-02-23 13:13:29,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66af7066 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:13:29, skipping insertion in model container [2021-02-23 13:13:29,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:13:29" (3/3) ... [2021-02-23 13:13:29,337 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1211a.c [2021-02-23 13:13:29,346 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:13:29,352 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:13:29,379 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:13:29,420 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:13:29,421 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:13:29,421 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:13:29,421 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:13:29,421 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:13:29,421 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:13:29,421 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:13:29,421 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:13:29,444 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2021-02-23 13:13:29,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-23 13:13:29,452 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:13:29,453 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] [2021-02-23 13:13:29,453 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:13:29,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:13:29,460 INFO L82 PathProgramCache]: Analyzing trace with hash 372092038, now seen corresponding path program 1 times [2021-02-23 13:13:29,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:13:29,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211236317] [2021-02-23 13:13:29,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:13:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:29,666 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:29,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:29,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:29,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:29,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:13:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:29,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:29,830 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:29,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:13:29,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:29,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:29,912 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:29,914 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:29,918 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:29,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 13:13:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:29,927 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:29,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:29,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:29,930 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:29,937 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 13:13:29,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211236317] [2021-02-23 13:13:29,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:13:29,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 13:13:29,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554299216] [2021-02-23 13:13:29,945 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 13:13:29,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:13:29,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 13:13:29,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 13:13:29,963 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 4 states. [2021-02-23 13:13:30,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:13:30,498 INFO L93 Difference]: Finished difference Result 110 states and 158 transitions. [2021-02-23 13:13:30,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:13:30,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2021-02-23 13:13:30,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:13:30,510 INFO L225 Difference]: With dead ends: 110 [2021-02-23 13:13:30,511 INFO L226 Difference]: Without dead ends: 55 [2021-02-23 13:13:30,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:13:30,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-02-23 13:13:30,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-02-23 13:13:30,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-02-23 13:13:30,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2021-02-23 13:13:30,585 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 27 [2021-02-23 13:13:30,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:13:30,585 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2021-02-23 13:13:30,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 13:13:30,585 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2021-02-23 13:13:30,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-23 13:13:30,587 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:13:30,587 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] [2021-02-23 13:13:30,588 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:13:30,588 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:13:30,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:13:30,589 INFO L82 PathProgramCache]: Analyzing trace with hash 582412726, now seen corresponding path program 1 times [2021-02-23 13:13:30,589 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:13:30,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783596299] [2021-02-23 13:13:30,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:13:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:30,670 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:30,671 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:30,672 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:30,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 13:13:30,676 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:30,677 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:30,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:13:30,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:30,723 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:30,724 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:30,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:13:30,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:30,775 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:30,779 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:30,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-02-23 13:13:30,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:30,800 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:30,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:30,807 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 13:13:30,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783596299] [2021-02-23 13:13:30,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:13:30,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 13:13:30,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465170629] [2021-02-23 13:13:30,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 13:13:30,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:13:30,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 13:13:30,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:13:30,818 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 5 states. [2021-02-23 13:13:31,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:13:31,091 INFO L93 Difference]: Finished difference Result 58 states and 61 transitions. [2021-02-23 13:13:31,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-23 13:13:31,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2021-02-23 13:13:31,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:13:31,094 INFO L225 Difference]: With dead ends: 58 [2021-02-23 13:13:31,094 INFO L226 Difference]: Without dead ends: 55 [2021-02-23 13:13:31,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:13:31,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-02-23 13:13:31,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-02-23 13:13:31,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2021-02-23 13:13:31,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 58 transitions. [2021-02-23 13:13:31,106 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 58 transitions. Word has length 30 [2021-02-23 13:13:31,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:13:31,107 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 58 transitions. [2021-02-23 13:13:31,107 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 13:13:31,107 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 58 transitions. [2021-02-23 13:13:31,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-23 13:13:31,108 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:13:31,108 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] [2021-02-23 13:13:31,109 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:13:31,109 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:13:31,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:13:31,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1342478189, now seen corresponding path program 1 times [2021-02-23 13:13:31,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:13:31,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204251197] [2021-02-23 13:13:31,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:13:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:13:31,173 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:13:31,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:13:31,274 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:13:31,310 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:13:31,310 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:13:31,311 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 13:13:31,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:13:31 BoogieIcfgContainer [2021-02-23 13:13:31,355 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:13:31,357 INFO L168 Benchmark]: Toolchain (without parser) took 3429.56 ms. Allocated memory is still 166.7 MB. Free memory was 142.4 MB in the beginning and 84.7 MB in the end (delta: 57.8 MB). Peak memory consumption was 58.2 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:31,358 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 166.7 MB. Free memory is still 139.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:13:31,359 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.93 ms. Allocated memory is still 166.7 MB. Free memory was 141.4 MB in the beginning and 129.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:31,360 INFO L168 Benchmark]: Boogie Preprocessor took 60.19 ms. Allocated memory is still 166.7 MB. Free memory was 129.3 MB in the beginning and 127.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:31,360 INFO L168 Benchmark]: RCFGBuilder took 1010.11 ms. Allocated memory is still 166.7 MB. Free memory was 127.2 MB in the beginning and 100.4 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:31,361 INFO L168 Benchmark]: TraceAbstraction took 2026.70 ms. Allocated memory is still 166.7 MB. Free memory was 99.9 MB in the beginning and 84.7 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:31,365 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 166.7 MB. Free memory is still 139.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 312.93 ms. Allocated memory is still 166.7 MB. Free memory was 141.4 MB in the beginning and 129.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.19 ms. Allocated memory is still 166.7 MB. Free memory was 129.3 MB in the beginning and 127.2 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1010.11 ms. Allocated memory is still 166.7 MB. Free memory was 127.2 MB in the beginning and 100.4 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2026.70 ms. Allocated memory is still 166.7 MB. Free memory was 99.9 MB in the beginning and 84.7 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 112]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 111, overapproximation of someBinaryArithmeticFLOAToperation at line 106, overapproximation of bitwiseAnd at line 95. Possible FailurePath: [L14] static const float one_modf = 1.0; VAL [\old(one_modf)=8589934598, one_modf=1] [L106] float x = 1.0f / 0.0f; [L107] float iptr = __VERIFIER_nondet_float(); [L108] CALL, EXPR modf_float(x, &iptr) VAL [\old(x)=8589934595, iptr={8:0}, one_modf=1] [L17] __int32_t i0, j0; [L18] __uint32_t i; VAL [\old(x)=8589934595, iptr={8:0}, iptr={8:0}, one_modf=1, x=8589934595] [L20] ieee_float_shape_type gf_u; [L21] gf_u.value = (x) [L22] EXPR gf_u.word [L22] (i0) = gf_u.word [L24] j0 = ((i0 >> 23) & 0xff) - 0x7f VAL [\old(x)=8589934595, i0=-2, iptr={8:0}, iptr={8:0}, one_modf=1, x=8589934595] [L25] COND TRUE j0 < 23 VAL [\old(x)=8589934595, i0=-2, iptr={8:0}, iptr={8:0}, j0=-1, one_modf=1, x=8589934595] [L26] COND TRUE j0 < 0 VAL [\old(x)=8589934595, i0=-2, iptr={8:0}, iptr={8:0}, j0=-1, one_modf=1, x=8589934595] [L28] ieee_float_shape_type sf_u; [L29] sf_u.word = (i0 & 0x80000000) [L30] EXPR sf_u.value [L30] (*iptr) = sf_u.value [L32] return x; VAL [\old(x)=8589934595, \result=8589934595, i0=-2, iptr={8:0}, iptr={8:0}, j0=-1, one_modf=1, x=8589934595] [L108] RET, EXPR modf_float(x, &iptr) VAL [iptr={8:0}, modf_float(x, &iptr)=8589934595, one_modf=1, x=8589934595] [L108] float res = modf_float(x, &iptr); [L111] EXPR \read(iptr) VAL [\read(iptr)=8589934604, iptr={8:0}, one_modf=1, res=8589934595, x=8589934595] [L111] CALL, EXPR isinf_float(iptr) VAL [\old(x)=8589934604, one_modf=1] [L89] __int32_t ix; VAL [\old(x)=8589934604, one_modf=1, x=8589934604] [L91] ieee_float_shape_type gf_u; [L92] gf_u.value = (x) [L93] EXPR gf_u.word [L93] (ix) = gf_u.word [L95] ix &= 0x7fffffff [L96] return ((ix) == 0x7f800000L); VAL [\old(x)=8589934604, \result=1, ix=2139095040, one_modf=1, x=8589934604] [L111] RET, EXPR isinf_float(iptr) VAL [\read(iptr)=8589934604, iptr={8:0}, isinf_float(iptr)=1, one_modf=1, res=8589934595, x=8589934595] [L111] isinf_float(iptr) && !(res == 0.0f && __signbit_float(res) == 0) [L111] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [\read(iptr)=8589934604, iptr={8:0}, isinf_float(iptr)=1, isinf_float(iptr) && !(res == 0.0f && __signbit_float(res) == 0)=1, one_modf=1, res=8589934595, res == 0.0f && __signbit_float(res) == 0=0, x=8589934595] [L111] isinf_float(iptr) && !(res == 0.0f && __signbit_float(res) == 0) VAL [\read(iptr)=8589934604, iptr={8:0}, isinf_float(iptr)=1, isinf_float(iptr) && !(res == 0.0f && __signbit_float(res) == 0)=1, one_modf=1, res=8589934595, res == 0.0f && __signbit_float(res) == 0=0, x=8589934595] [L111] COND TRUE isinf_float(iptr) && !(res == 0.0f && __signbit_float(res) == 0) [L112] reach_error() VAL [iptr={8:0}, one_modf=1, res=8589934595, x=8589934595] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 62 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 112 SDtfs, 12 SDslu, 133 SDs, 0 SdLazy, 147 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 89 NumberOfCodeBlocks, 89 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 55 ConstructedInterpolants, 0 QuantifiedInterpolants, 4681 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...