/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/recursive-simple/afterrec-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 15:49:38,164 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 15:49:38,169 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 15:49:38,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 15:49:38,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 15:49:38,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 15:49:38,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 15:49:38,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 15:49:38,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 15:49:38,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 15:49:38,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 15:49:38,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 15:49:38,266 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 15:49:38,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 15:49:38,270 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 15:49:38,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 15:49:38,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 15:49:38,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 15:49:38,290 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 15:49:38,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 15:49:38,299 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 15:49:38,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 15:49:38,305 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 15:49:38,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 15:49:38,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 15:49:38,319 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 15:49:38,319 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 15:49:38,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 15:49:38,322 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 15:49:38,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 15:49:38,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 15:49:38,325 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 15:49:38,327 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 15:49:38,327 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 15:49:38,329 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 15:49:38,329 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 15:49:38,330 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 15:49:38,330 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 15:49:38,330 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 15:49:38,331 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 15:49:38,332 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 15:49:38,333 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 15:49:38,382 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 15:49:38,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 15:49:38,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 15:49:38,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 15:49:38,387 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 15:49:38,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 15:49:38,388 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 15:49:38,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 15:49:38,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 15:49:38,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 15:49:38,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 15:49:38,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 15:49:38,390 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 15:49:38,390 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 15:49:38,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 15:49:38,391 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 15:49:38,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 15:49:38,391 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 15:49:38,391 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 15:49:38,391 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 15:49:38,392 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:49:38,392 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 15:49:38,392 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 15:49:38,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 15:49:38,393 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 15:49:38,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 15:49:38,393 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 15:49:38,393 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 15:49:38,393 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 15:49:38,822 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 15:49:38,849 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 15:49:38,852 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 15:49:38,854 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 15:49:38,855 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 15:49:38,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/afterrec-2.c [2021-02-21 15:49:38,943 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47f2085ab/cdd760fb40fc48baa76f6eebbdd228cf/FLAGd5aead9eb [2021-02-21 15:49:39,509 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 15:49:39,510 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/afterrec-2.c [2021-02-21 15:49:39,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47f2085ab/cdd760fb40fc48baa76f6eebbdd228cf/FLAGd5aead9eb [2021-02-21 15:49:39,849 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47f2085ab/cdd760fb40fc48baa76f6eebbdd228cf [2021-02-21 15:49:39,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 15:49:39,867 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 15:49:39,873 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 15:49:39,873 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 15:49:39,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 15:49:39,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:49:39" (1/1) ... [2021-02-21 15:49:39,881 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6da3d3f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:49:39, skipping insertion in model container [2021-02-21 15:49:39,881 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:49:39" (1/1) ... [2021-02-21 15:49:39,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 15:49:39,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 15:49:40,134 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/afterrec-2.c[318,331] [2021-02-21 15:49:40,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:49:40,150 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 15:49:40,164 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/afterrec-2.c[318,331] [2021-02-21 15:49:40,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:49:40,180 INFO L208 MainTranslator]: Completed translation [2021-02-21 15:49:40,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:49:40 WrapperNode [2021-02-21 15:49:40,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 15:49:40,182 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 15:49:40,182 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 15:49:40,182 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 15:49:40,196 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:49:40" (1/1) ... [2021-02-21 15:49:40,197 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:49:40" (1/1) ... [2021-02-21 15:49:40,204 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:49:40" (1/1) ... [2021-02-21 15:49:40,205 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:49:40" (1/1) ... [2021-02-21 15:49:40,210 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:49:40" (1/1) ... [2021-02-21 15:49:40,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:49:40" (1/1) ... [2021-02-21 15:49:40,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:49:40" (1/1) ... [2021-02-21 15:49:40,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 15:49:40,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 15:49:40,216 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 15:49:40,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 15:49:40,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:49:40" (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 15:49:40,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 15:49:40,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 15:49:40,397 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 15:49:40,397 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-02-21 15:49:40,398 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 15:49:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 15:49:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 15:49:40,399 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 15:49:40,399 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 15:49:40,399 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-02-21 15:49:40,400 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 15:49:40,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 15:49:40,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 15:49:40,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 15:49:40,402 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 15:49:40,402 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 15:49:40,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 15:49:40,733 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 15:49:40,733 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 15:49:40,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:49:40 BoogieIcfgContainer [2021-02-21 15:49:40,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 15:49:40,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 15:49:40,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 15:49:40,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 15:49:40,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:49:39" (1/3) ... [2021-02-21 15:49:40,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d2eafd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:49:40, skipping insertion in model container [2021-02-21 15:49:40,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:49:40" (2/3) ... [2021-02-21 15:49:40,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d2eafd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:49:40, skipping insertion in model container [2021-02-21 15:49:40,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:49:40" (3/3) ... [2021-02-21 15:49:40,745 INFO L111 eAbstractionObserver]: Analyzing ICFG afterrec-2.c [2021-02-21 15:49:40,753 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 15:49:40,759 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 15:49:40,781 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 15:49:40,814 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 15:49:40,814 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 15:49:40,815 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 15:49:40,815 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 15:49:40,815 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 15:49:40,815 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 15:49:40,815 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 15:49:40,816 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 15:49:40,838 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2021-02-21 15:49:40,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-02-21 15:49:40,852 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:49:40,853 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 15:49:40,854 INFO L428 AbstractCegarLoop]: === Iteration 1 === [fErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:49:40,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:49:40,870 INFO L82 PathProgramCache]: Analyzing trace with hash 683021438, now seen corresponding path program 1 times [2021-02-21 15:49:40,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:49:40,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844668501] [2021-02-21 15:49:40,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:49:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:49:41,105 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,106 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,108 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,109 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:49:41,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 15:49:41,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:49:41,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:49:41,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-02-21 15:49:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:49:41,205 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,206 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,210 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-02-21 15:49:41,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844668501] [2021-02-21 15:49:41,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050590154] [2021-02-21 15:49:41,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-21 15:49:41,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:49:41,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjunts are in the unsatisfiable core [2021-02-21 15:49:41,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-21 15:49:41,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,302 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,303 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,305 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,307 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,315 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,316 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,317 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,321 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,326 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,327 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,327 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,328 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,329 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:49:41,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,334 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:49:41,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:49:41,336 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:49:41,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,351 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 15:49:41,356 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,375 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 15:49:41,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 15:49:41,379 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 15:49:41,380 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,392 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 15:49:41,393 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 15:49:41,404 WARN L141 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size [2021-02-21 15:49:41,405 WARN L147 QuantifierPusher]: treesize reduction 8, result has 11.1 percent of original size 1 [2021-02-21 15:49:41,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,407 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,409 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,410 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,411 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,412 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,412 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,428 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,430 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,432 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,433 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,433 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,435 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,436 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,437 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,438 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,439 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,439 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,445 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,446 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:49:41,452 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:49:41,453 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-02-21 15:49:41,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-02-21 15:49:41,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-02-21 15:49:41,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995277309] [2021-02-21 15:49:41,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 15:49:41,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:49:41,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 15:49:41,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 15:49:41,498 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2021-02-21 15:49:41,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:49:41,560 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-02-21 15:49:41,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 15:49:41,563 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2021-02-21 15:49:41,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:49:41,569 INFO L225 Difference]: With dead ends: 25 [2021-02-21 15:49:41,569 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 15:49:41,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-02-21 15:49:41,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 15:49:41,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 15:49:41,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 15:49:41,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 15:49:41,600 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-02-21 15:49:41,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:49:41,601 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 15:49:41,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 15:49:41,601 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 15:49:41,601 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 15:49:41,808 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-02-21 15:49:41,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 15:49:41,835 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-21 15:49:41,835 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-21 15:49:41,835 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-21 15:49:41,835 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-21 15:49:41,836 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2021-02-21 15:49:41,836 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-21 15:49:41,836 INFO L189 CegarLoopUtils]: For program point fErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2021-02-21 15:49:41,836 INFO L185 CegarLoopUtils]: At program point L8(line 8) the Hoare annotation is: (not (<= |f_#in~n| 2)) [2021-02-21 15:49:41,837 INFO L189 CegarLoopUtils]: For program point fEXIT(lines 5 10) no Hoare annotation was computed. [2021-02-21 15:49:41,837 INFO L189 CegarLoopUtils]: For program point L8-1(lines 5 10) no Hoare annotation was computed. [2021-02-21 15:49:41,837 INFO L189 CegarLoopUtils]: For program point L6(line 6) no Hoare annotation was computed. [2021-02-21 15:49:41,837 INFO L192 CegarLoopUtils]: At program point fENTRY(lines 5 10) the Hoare annotation is: true [2021-02-21 15:49:41,837 INFO L189 CegarLoopUtils]: For program point fFINAL(lines 5 10) no Hoare annotation was computed. [2021-02-21 15:49:41,837 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-21 15:49:41,838 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 15:49:41,838 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 15:49:41,838 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-21 15:49:41,838 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 12 14) the Hoare annotation is: true [2021-02-21 15:49:41,838 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 12 14) no Hoare annotation was computed. [2021-02-21 15:49:41,838 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 12 14) no Hoare annotation was computed. [2021-02-21 15:49:41,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:49:41 BoogieIcfgContainer [2021-02-21 15:49:41,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 15:49:41,850 INFO L168 Benchmark]: Toolchain (without parser) took 1993.51 ms. Allocated memory was 175.1 MB in the beginning and 210.8 MB in the end (delta: 35.7 MB). Free memory was 156.4 MB in the beginning and 176.8 MB in the end (delta: -20.4 MB). Peak memory consumption was 15.3 MB. Max. memory is 8.0 GB. [2021-02-21 15:49:41,850 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 175.1 MB. Free memory is still 146.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:49:41,856 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.75 ms. Allocated memory is still 175.1 MB. Free memory was 155.2 MB in the beginning and 146.5 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-02-21 15:49:41,857 INFO L168 Benchmark]: Boogie Preprocessor took 33.37 ms. Allocated memory is still 175.1 MB. Free memory was 146.5 MB in the beginning and 145.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 15:49:41,862 INFO L168 Benchmark]: RCFGBuilder took 519.62 ms. Allocated memory is still 175.1 MB. Free memory was 145.2 MB in the beginning and 147.8 MB in the end (delta: -2.7 MB). Peak memory consumption was 2.9 MB. Max. memory is 8.0 GB. [2021-02-21 15:49:41,864 INFO L168 Benchmark]: TraceAbstraction took 1109.15 ms. Allocated memory was 175.1 MB in the beginning and 210.8 MB in the end (delta: 35.7 MB). Free memory was 147.1 MB in the beginning and 176.8 MB in the end (delta: -29.7 MB). Peak memory consumption was 7.2 MB. Max. memory is 8.0 GB. [2021-02-21 15:49:41,873 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 175.1 MB. Free memory is still 146.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 307.75 ms. Allocated memory is still 175.1 MB. Free memory was 155.2 MB in the beginning and 146.5 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.37 ms. Allocated memory is still 175.1 MB. Free memory was 146.5 MB in the beginning and 145.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 519.62 ms. Allocated memory is still 175.1 MB. Free memory was 145.2 MB in the beginning and 147.8 MB in the end (delta: -2.7 MB). Peak memory consumption was 2.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1109.15 ms. Allocated memory was 175.1 MB in the beginning and 210.8 MB in the end (delta: 35.7 MB). Free memory was 147.1 MB in the beginning and 176.8 MB in the end (delta: -29.7 MB). Peak memory consumption was 7.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 3, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 5 SDslu, 17 SDs, 0 SdLazy, 5 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 8 PreInvPairs, 8 NumberOfFragments, 9 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1120 SizeOfPredicates, 1 NumberOfNonLiveVariables, 101 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 10/14 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 proved your program to be correct! Received shutdown request...