/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/loops/trex02-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:26:23,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:26:23,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:26:23,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:26:23,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:26:23,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:26:23,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:26:23,229 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:26:23,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:26:23,232 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:26:23,233 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:26:23,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:26:23,235 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:26:23,237 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:26:23,238 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:26:23,239 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:26:23,241 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:26:23,242 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:26:23,244 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:26:23,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:26:23,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:26:23,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:26:23,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:26:23,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:26:23,271 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 16:26:23,271 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 16:26:23,272 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 16:26:23,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 16:26:23,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 16:26:23,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 16:26:23,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 16:26:23,282 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 16:26:23,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 16:26:23,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 16:26:23,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 16:26:23,305 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 16:26:23,306 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 16:26:23,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 16:26:23,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:26:23,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:26:23,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:26:23,310 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 16:26:23,369 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:26:23,370 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:26:23,372 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:26:23,372 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:26:23,372 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:26:23,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:26:23,373 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:26:23,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:26:23,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:26:23,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:26:23,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:26:23,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:26:23,376 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:26:23,376 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:26:23,376 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:26:23,376 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:26:23,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:26:23,377 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:26:23,377 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:26:23,377 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:26:23,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:26:23,378 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:26:23,378 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:26:23,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:26:23,379 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:26:23,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:26:23,379 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:26:23,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:26:23,380 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:26:23,817 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:26:23,845 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:26:23,848 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:26:23,850 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:26:23,850 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:26:23,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex02-1.c [2021-02-21 16:26:23,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a604270aa/3c4102b6fdc246ddac93078606433e2d/FLAG9d0748fc5 [2021-02-21 16:26:24,600 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:26:24,601 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex02-1.c [2021-02-21 16:26:24,608 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a604270aa/3c4102b6fdc246ddac93078606433e2d/FLAG9d0748fc5 [2021-02-21 16:26:24,973 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a604270aa/3c4102b6fdc246ddac93078606433e2d [2021-02-21 16:26:24,976 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:26:24,992 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:26:24,994 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:26:24,994 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:26:24,998 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:26:24,999 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:26:24" (1/1) ... [2021-02-21 16:26:25,002 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ff4b7c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:25, skipping insertion in model container [2021-02-21 16:26:25,002 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:26:24" (1/1) ... [2021-02-21 16:26:25,011 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:26:25,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:26:25,180 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/trex02-1.c[320,333] [2021-02-21 16:26:25,197 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:26:25,212 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:26:25,228 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/trex02-1.c[320,333] [2021-02-21 16:26:25,232 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:26:25,254 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:26:25,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:25 WrapperNode [2021-02-21 16:26:25,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:26:25,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:26:25,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:26:25,259 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:26:25,274 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:25" (1/1) ... [2021-02-21 16:26:25,275 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:25" (1/1) ... [2021-02-21 16:26:25,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:25" (1/1) ... [2021-02-21 16:26:25,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:25" (1/1) ... [2021-02-21 16:26:25,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:25" (1/1) ... [2021-02-21 16:26:25,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:25" (1/1) ... [2021-02-21 16:26:25,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:25" (1/1) ... [2021-02-21 16:26:25,326 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:26:25,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:26:25,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:26:25,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:26:25,330 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:25" (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 16:26:25,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:26:25,446 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:26:25,447 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:26:25,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 16:26:25,447 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-02-21 16:26:25,447 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:26:25,447 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:26:25,448 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:26:25,448 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:26:25,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:26:25,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 16:26:25,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-21 16:26:25,449 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:26:25,449 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-02-21 16:26:25,449 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:26:25,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:26:25,449 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:26:25,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:26:25,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:26:25,450 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:26:25,450 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:26:25,750 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:26:25,750 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 16:26:25,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:26:25 BoogieIcfgContainer [2021-02-21 16:26:25,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:26:25,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:26:25,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:26:25,805 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:26:25,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:26:24" (1/3) ... [2021-02-21 16:26:25,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5041009d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:26:25, skipping insertion in model container [2021-02-21 16:26:25,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:26:25" (2/3) ... [2021-02-21 16:26:25,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5041009d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:26:25, skipping insertion in model container [2021-02-21 16:26:25,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:26:25" (3/3) ... [2021-02-21 16:26:25,818 INFO L111 eAbstractionObserver]: Analyzing ICFG trex02-1.c [2021-02-21 16:26:25,856 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:26:25,864 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:26:25,890 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:26:25,919 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:26:25,920 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:26:25,920 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:26:25,920 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:26:25,920 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:26:25,920 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:26:25,920 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:26:25,921 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:26:25,940 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2021-02-21 16:26:25,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-02-21 16:26:25,947 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:26:25,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:26:25,948 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:26:25,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:26:25,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1589172536, now seen corresponding path program 1 times [2021-02-21 16:26:25,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:26:25,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864195128] [2021-02-21 16:26:25,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:26:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:26:26,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:26,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:26,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:26,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:26,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:26:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:26:26,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:26,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:26,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:26:26,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864195128] [2021-02-21 16:26:26,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:26:26,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 16:26:26,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516919462] [2021-02-21 16:26:26,270 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 16:26:26,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:26:26,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 16:26:26,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:26:26,292 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2021-02-21 16:26:26,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:26:26,447 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-02-21 16:26:26,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 16:26:26,449 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2021-02-21 16:26:26,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:26:26,459 INFO L225 Difference]: With dead ends: 35 [2021-02-21 16:26:26,460 INFO L226 Difference]: Without dead ends: 18 [2021-02-21 16:26:26,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:26:26,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-02-21 16:26:26,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-02-21 16:26:26,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-02-21 16:26:26,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-02-21 16:26:26,514 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2021-02-21 16:26:26,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:26:26,515 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-02-21 16:26:26,515 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 16:26:26,515 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-02-21 16:26:26,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-02-21 16:26:26,516 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:26:26,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:26:26,517 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:26:26,517 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:26:26,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:26:26,518 INFO L82 PathProgramCache]: Analyzing trace with hash 1578090284, now seen corresponding path program 1 times [2021-02-21 16:26:26,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:26:26,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072875628] [2021-02-21 16:26:26,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:26:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:26:26,586 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:26,587 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:26,589 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:26,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:26,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:26,593 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:26:26,603 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:26,604 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:26:26,617 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:26,619 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:26:26,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:26,635 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:26,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:26:26,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:26:26,730 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:26:26,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:26:26,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:26:26,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072875628] [2021-02-21 16:26:26,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:26:26,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 16:26:26,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976331439] [2021-02-21 16:26:26,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 16:26:26,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:26:26,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 16:26:26,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:26:26,738 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 6 states. [2021-02-21 16:26:27,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:26:27,089 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2021-02-21 16:26:27,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 16:26:27,090 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-02-21 16:26:27,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:26:27,090 INFO L225 Difference]: With dead ends: 18 [2021-02-21 16:26:27,091 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 16:26:27,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-02-21 16:26:27,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 16:26:27,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 16:26:27,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 16:26:27,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 16:26:27,093 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-02-21 16:26:27,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:26:27,094 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 16:26:27,094 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 16:26:27,094 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 16:26:27,094 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 16:26:27,095 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:26:27,097 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 16:26:27,240 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-21 16:26:27,240 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-21 16:26:27,241 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-21 16:26:27,241 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:26:27,241 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~x~0 |old(~x~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-21 16:26:27,241 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:26:27,242 INFO L189 CegarLoopUtils]: For program point fooEXIT(lines 17 19) no Hoare annotation was computed. [2021-02-21 16:26:27,242 INFO L185 CegarLoopUtils]: At program point fooENTRY(lines 17 19) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2021-02-21 16:26:27,242 INFO L189 CegarLoopUtils]: For program point fooFINAL(lines 17 19) no Hoare annotation was computed. [2021-02-21 16:26:27,242 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:26:27,242 INFO L185 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (<= ~x~0 0) [2021-02-21 16:26:27,243 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 16:26:27,243 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:26:27,243 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 21 29) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (<= |old(~x~0)| 0))) [2021-02-21 16:26:27,243 INFO L192 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-02-21 16:26:27,243 INFO L189 CegarLoopUtils]: For program point L25(lines 25 26) no Hoare annotation was computed. [2021-02-21 16:26:27,244 INFO L192 CegarLoopUtils]: At program point L26-1(lines 23 27) the Hoare annotation is: true [2021-02-21 16:26:27,244 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 21 29) no Hoare annotation was computed. [2021-02-21 16:26:27,244 INFO L192 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: true [2021-02-21 16:26:27,244 INFO L185 CegarLoopUtils]: At program point L23-2(lines 23 27) the Hoare annotation is: (or (<= ~x~0 0) (not (<= |old(~x~0)| 0))) [2021-02-21 16:26:27,244 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 21 29) no Hoare annotation was computed. [2021-02-21 16:26:27,245 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-02-21 16:26:27,245 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2021-02-21 16:26:27,245 INFO L189 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-02-21 16:26:27,245 INFO L189 CegarLoopUtils]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-02-21 16:26:27,245 INFO L189 CegarLoopUtils]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2021-02-21 16:26:27,246 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-02-21 16:26:27,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:26:27 BoogieIcfgContainer [2021-02-21 16:26:27,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:26:27,258 INFO L168 Benchmark]: Toolchain (without parser) took 2277.84 ms. Allocated memory is still 153.1 MB. Free memory was 129.3 MB in the beginning and 56.1 MB in the end (delta: 73.2 MB). Peak memory consumption was 72.7 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:27,259 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 153.1 MB. Free memory is still 127.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:26:27,260 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.72 ms. Allocated memory is still 153.1 MB. Free memory was 128.1 MB in the beginning and 118.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:27,261 INFO L168 Benchmark]: Boogie Preprocessor took 69.62 ms. Allocated memory is still 153.1 MB. Free memory was 118.9 MB in the beginning and 117.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:27,262 INFO L168 Benchmark]: RCFGBuilder took 464.71 ms. Allocated memory is still 153.1 MB. Free memory was 117.3 MB in the beginning and 137.1 MB in the end (delta: -19.8 MB). Peak memory consumption was 16.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:27,263 INFO L168 Benchmark]: TraceAbstraction took 1458.50 ms. Allocated memory is still 153.1 MB. Free memory was 136.8 MB in the beginning and 56.1 MB in the end (delta: 80.7 MB). Peak memory consumption was 79.7 MB. Max. memory is 8.0 GB. [2021-02-21 16:26:27,266 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 153.1 MB. Free memory is still 127.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 260.72 ms. Allocated memory is still 153.1 MB. Free memory was 128.1 MB in the beginning and 118.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 69.62 ms. Allocated memory is still 153.1 MB. Free memory was 118.9 MB in the beginning and 117.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 464.71 ms. Allocated memory is still 153.1 MB. Free memory was 117.3 MB in the beginning and 137.1 MB in the end (delta: -19.8 MB). Peak memory consumption was 16.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1458.50 ms. Allocated memory is still 153.1 MB. Free memory was 136.8 MB in the beginning and 56.1 MB in the end (delta: 80.7 MB). Peak memory consumption was 79.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 12 SDslu, 44 SDs, 0 SdLazy, 33 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 12 PreInvPairs, 13 NumberOfFragments, 61 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 113 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 940 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 proved your program to be correct! Received shutdown request...