/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/for_infinite_loop_2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:17:20,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:17:20,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:17:20,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 21:17:20,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:17:20,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:17:20,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:17:20,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:17:20,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:17:20,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:17:20,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:17:20,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:17:20,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:17:20,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:17:20,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:17:20,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:17:20,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:17:20,279 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:17:20,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:17:20,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:17:20,283 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:17:20,301 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:17:20,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:17:20,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:17:20,307 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:17:20,307 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:17:20,308 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:17:20,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:17:20,308 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:17:20,308 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:17:20,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:17:20,309 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:17:20,309 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:17:20,309 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:17:20,309 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:17:20,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:17:20,310 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:17:20,310 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:17:20,310 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:17:20,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:17:20,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:17:20,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:17:20,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:17:20,312 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:17:20,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:17:20,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:17:20,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:17:20,809 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:17:20,810 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:17:20,811 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/for_infinite_loop_2.c [2021-02-21 21:17:20,892 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/672100b0f/0a1e904c0f4b402d9324f25a7a3faf29/FLAGbd7a068db [2021-02-21 21:17:21,434 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:17:21,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/for_infinite_loop_2.c [2021-02-21 21:17:21,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/672100b0f/0a1e904c0f4b402d9324f25a7a3faf29/FLAGbd7a068db [2021-02-21 21:17:21,820 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/672100b0f/0a1e904c0f4b402d9324f25a7a3faf29 [2021-02-21 21:17:21,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:17:21,843 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:17:21,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:17:21,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:17:21,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:17:21,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:17:21" (1/1) ... [2021-02-21 21:17:21,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@541f419b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:21, skipping insertion in model container [2021-02-21 21:17:21,855 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:17:21" (1/1) ... [2021-02-21 21:17:21,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:17:21,881 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:17:22,120 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/for_infinite_loop_2.c[418,431] [2021-02-21 21:17:22,138 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:17:22,147 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:17:22,161 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/for_infinite_loop_2.c[418,431] [2021-02-21 21:17:22,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:17:22,182 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:17:22,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:22 WrapperNode [2021-02-21 21:17:22,183 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:17:22,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:17:22,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:17:22,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:17:22,200 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:22" (1/1) ... [2021-02-21 21:17:22,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:22" (1/1) ... [2021-02-21 21:17:22,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:22" (1/1) ... [2021-02-21 21:17:22,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:22" (1/1) ... [2021-02-21 21:17:22,214 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:22" (1/1) ... [2021-02-21 21:17:22,219 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:22" (1/1) ... [2021-02-21 21:17:22,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:22" (1/1) ... [2021-02-21 21:17:22,222 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:17:22,223 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:17:22,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:17:22,224 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:17:22,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:22" (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 21:17:22,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:17:22,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:17:22,326 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:17:22,326 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 21:17:22,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:17:22,326 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:17:22,327 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:17:22,327 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:17:22,327 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:17:22,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:17:22,327 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 21:17:22,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:17:22,328 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:17:22,328 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:17:22,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:17:22,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:17:22,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:17:22,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:17:22,329 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:17:22,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:17:22,620 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:17:22,620 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-21 21:17:22,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:17:22 BoogieIcfgContainer [2021-02-21 21:17:22,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:17:22,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:17:22,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:17:22,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:17:22,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:17:21" (1/3) ... [2021-02-21 21:17:22,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba040cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:17:22, skipping insertion in model container [2021-02-21 21:17:22,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:22" (2/3) ... [2021-02-21 21:17:22,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ba040cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:17:22, skipping insertion in model container [2021-02-21 21:17:22,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:17:22" (3/3) ... [2021-02-21 21:17:22,633 INFO L111 eAbstractionObserver]: Analyzing ICFG for_infinite_loop_2.c [2021-02-21 21:17:22,641 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:17:22,646 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:17:22,679 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:17:22,766 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:17:22,766 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:17:22,767 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:17:22,767 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:17:22,767 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:17:22,767 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:17:22,767 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:17:22,767 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:17:22,797 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2021-02-21 21:17:22,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-21 21:17:22,811 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:22,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:17:22,814 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:22,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:22,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1751332459, now seen corresponding path program 1 times [2021-02-21 21:17:22,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:22,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92536330] [2021-02-21 21:17:22,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:22,927 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:23,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:23,061 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:23,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:23,063 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:23,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:17:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:23,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:23,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:23,157 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 21:17:23,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92536330] [2021-02-21 21:17:23,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:17:23,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:17:23,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099445598] [2021-02-21 21:17:23,167 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:17:23,167 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:17:23,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:17:23,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:17:23,189 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2021-02-21 21:17:23,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:17:23,330 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2021-02-21 21:17:23,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:17:23,333 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2021-02-21 21:17:23,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:17:23,341 INFO L225 Difference]: With dead ends: 53 [2021-02-21 21:17:23,341 INFO L226 Difference]: Without dead ends: 31 [2021-02-21 21:17:23,345 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 21:17:23,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-02-21 21:17:23,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2021-02-21 21:17:23,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-02-21 21:17:23,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-02-21 21:17:23,398 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 25 [2021-02-21 21:17:23,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:17:23,398 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-02-21 21:17:23,399 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:17:23,399 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-02-21 21:17:23,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-02-21 21:17:23,400 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:23,400 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:17:23,400 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:17:23,401 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:23,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:23,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1744808230, now seen corresponding path program 1 times [2021-02-21 21:17:23,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:23,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062377950] [2021-02-21 21:17:23,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:23,406 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:23,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:23,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:23,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:23,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:17:23,499 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:23,500 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:17:23,505 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:23,505 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:17:23,511 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:23,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:23,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:17:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:23,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:23,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:23,564 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 21:17:23,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062377950] [2021-02-21 21:17:23,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:17:23,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 21:17:23,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598163223] [2021-02-21 21:17:23,567 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 21:17:23,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:17:23,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 21:17:23,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:17:23,568 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 6 states. [2021-02-21 21:17:23,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:17:23,806 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2021-02-21 21:17:23,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 21:17:23,807 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2021-02-21 21:17:23,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:17:23,808 INFO L225 Difference]: With dead ends: 31 [2021-02-21 21:17:23,808 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 21:17:23,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-21 21:17:23,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 21:17:23,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 21:17:23,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 21:17:23,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 21:17:23,812 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2021-02-21 21:17:23,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:17:23,813 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 21:17:23,813 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 21:17:23,813 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 21:17:23,813 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 21:17:23,814 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:17:23,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 21:17:24,268 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-21 21:17:24,268 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-21 21:17:24,268 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-21 21:17:24,269 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-21 21:17:24,269 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-21 21:17:24,269 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:17:24,269 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-21 21:17:24,269 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 21:17:24,269 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-21 21:17:24,270 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)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-21 21:17:24,270 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-21 21:17:24,270 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-21 21:17:24,270 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:17:24,270 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 21:17:24,270 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 21:17:24,271 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 21:17:24,271 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 21:17:24,271 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2021-02-21 21:17:24,271 INFO L189 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-02-21 21:17:24,271 INFO L189 CegarLoopUtils]: For program point L7-1(line 7) no Hoare annotation was computed. [2021-02-21 21:17:24,271 INFO L189 CegarLoopUtils]: For program point L7-3(lines 6 8) no Hoare annotation was computed. [2021-02-21 21:17:24,271 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2021-02-21 21:17:24,272 INFO L185 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: (= main_~x~0 0) [2021-02-21 21:17:24,272 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 18 28) the Hoare annotation is: true [2021-02-21 21:17:24,272 INFO L185 CegarLoopUtils]: At program point L25-1(lines 23 26) the Hoare annotation is: (= main_~x~0 0) [2021-02-21 21:17:24,272 INFO L185 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: (= main_~x~0 0) [2021-02-21 21:17:24,272 INFO L185 CegarLoopUtils]: At program point L21(line 21) the Hoare annotation is: (= main_~x~0 0) [2021-02-21 21:17:24,272 INFO L185 CegarLoopUtils]: At program point L21-1(line 21) the Hoare annotation is: (= main_~x~0 0) [2021-02-21 21:17:24,273 INFO L185 CegarLoopUtils]: At program point L23-3(line 23) the Hoare annotation is: (= main_~x~0 0) [2021-02-21 21:17:24,273 INFO L185 CegarLoopUtils]: At program point L21-2(line 21) the Hoare annotation is: (= main_~x~0 0) [2021-02-21 21:17:24,273 INFO L185 CegarLoopUtils]: At program point L23-4(line 23) the Hoare annotation is: (= main_~x~0 0) [2021-02-21 21:17:24,273 INFO L185 CegarLoopUtils]: At program point L23-5(lines 23 26) the Hoare annotation is: (= main_~x~0 0) [2021-02-21 21:17:24,273 INFO L185 CegarLoopUtils]: At program point L23-6(lines 23 26) the Hoare annotation is: false [2021-02-21 21:17:24,273 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 18 28) the Hoare annotation is: true [2021-02-21 21:17:24,274 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 18 28) the Hoare annotation is: true [2021-02-21 21:17:24,274 INFO L185 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: (= main_~x~0 0) [2021-02-21 21:17:24,274 INFO L192 CegarLoopUtils]: At program point L22-1(line 22) the Hoare annotation is: true [2021-02-21 21:17:24,274 INFO L192 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: true [2021-02-21 21:17:24,274 INFO L185 CegarLoopUtils]: At program point L20-1(line 20) the Hoare annotation is: (= main_~x~0 0) [2021-02-21 21:17:24,274 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 9 14) the Hoare annotation is: true [2021-02-21 21:17:24,274 INFO L185 CegarLoopUtils]: At program point L11(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:17:24,275 INFO L185 CegarLoopUtils]: At program point L10(lines 10 12) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:17:24,275 INFO L185 CegarLoopUtils]: At program point L11-1(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:17:24,275 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 9 14) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:17:24,275 INFO L185 CegarLoopUtils]: At program point L10-2(lines 9 14) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:17:24,275 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-21 21:17:24,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:17:24 BoogieIcfgContainer [2021-02-21 21:17:24,294 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:17:24,296 INFO L168 Benchmark]: Toolchain (without parser) took 2468.04 ms. Allocated memory was 160.4 MB in the beginning and 196.1 MB in the end (delta: 35.7 MB). Free memory was 137.4 MB in the beginning and 125.0 MB in the end (delta: 12.4 MB). Peak memory consumption was 78.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:24,297 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 160.4 MB. Free memory is still 133.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:17:24,298 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.67 ms. Allocated memory is still 160.4 MB. Free memory was 136.1 MB in the beginning and 126.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:24,299 INFO L168 Benchmark]: Boogie Preprocessor took 38.59 ms. Allocated memory is still 160.4 MB. Free memory was 126.5 MB in the beginning and 125.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:24,300 INFO L168 Benchmark]: RCFGBuilder took 399.27 ms. Allocated memory is still 160.4 MB. Free memory was 125.1 MB in the beginning and 110.6 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:24,301 INFO L168 Benchmark]: TraceAbstraction took 1669.25 ms. Allocated memory was 160.4 MB in the beginning and 196.1 MB in the end (delta: 35.7 MB). Free memory was 110.1 MB in the beginning and 125.0 MB in the end (delta: -14.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 8.0 GB. [2021-02-21 21:17:24,305 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 160.4 MB. Free memory is still 133.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 335.67 ms. Allocated memory is still 160.4 MB. Free memory was 136.1 MB in the beginning and 126.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.59 ms. Allocated memory is still 160.4 MB. Free memory was 126.5 MB in the beginning and 125.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 399.27 ms. Allocated memory is still 160.4 MB. Free memory was 125.1 MB in the beginning and 110.6 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1669.25 ms. Allocated memory was 160.4 MB in the beginning and 196.1 MB in the end (delta: 35.7 MB). Free memory was 110.1 MB in the beginning and 125.0 MB in the end (delta: -14.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: 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: x == 0 - ProcedureContractResult [Line: 18]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 43 SDslu, 45 SDs, 0 SdLazy, 49 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 38 LocationsWithAnnotation, 52 PreInvPairs, 63 NumberOfFragments, 117 HoareAnnotationTreeSize, 52 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 38 FomulaSimplificationsInter, 634 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...