/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/while_infinite_loop_3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 21:18:27,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:18:27,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:18:27,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 21:18:27,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:18:27,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:18:27,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:18:27,667 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:18:27,668 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:18:27,670 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:18:27,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:18:27,675 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:18:27,677 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:18:27,679 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:18:27,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:18:27,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:18:27,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:18:27,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:18:27,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:18:27,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:18:27,712 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 21:18:27,735 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:18:27,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:18:27,740 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:18:27,740 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:18:27,741 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:18:27,741 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:18:27,741 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:18:27,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:18:27,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:18:27,742 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:18:27,744 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:18:27,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:18:27,745 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:18:27,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:18:27,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:18:27,746 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:18:27,746 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:18:27,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:18:27,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:18:27,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:18:27,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:18:27,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:18:27,748 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:18:28,210 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:18:28,254 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:18:28,258 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:18:28,259 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:18:28,262 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:18:28,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_3.c [2021-02-21 21:18:28,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddf61a3b2/c3ad12ad03db462aac87044a7f1a79e2/FLAGb0f47409a [2021-02-21 21:18:29,022 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:18:29,023 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_3.c [2021-02-21 21:18:29,034 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddf61a3b2/c3ad12ad03db462aac87044a7f1a79e2/FLAGb0f47409a [2021-02-21 21:18:29,394 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddf61a3b2/c3ad12ad03db462aac87044a7f1a79e2 [2021-02-21 21:18:29,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:18:29,414 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:18:29,420 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:18:29,421 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:18:29,425 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:18:29,426 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:18:29" (1/1) ... [2021-02-21 21:18:29,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74dd884c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:29, skipping insertion in model container [2021-02-21 21:18:29,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:18:29" (1/1) ... [2021-02-21 21:18:29,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:18:29,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:18:29,672 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/while_infinite_loop_3.c[333,346] [2021-02-21 21:18:29,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:18:29,713 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:18:29,729 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/while_infinite_loop_3.c[333,346] [2021-02-21 21:18:29,733 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:18:29,752 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:18:29,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:29 WrapperNode [2021-02-21 21:18:29,753 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:18:29,754 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:18:29,755 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:18:29,755 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:18:29,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:29" (1/1) ... [2021-02-21 21:18:29,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:29" (1/1) ... [2021-02-21 21:18:29,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:29" (1/1) ... [2021-02-21 21:18:29,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:29" (1/1) ... [2021-02-21 21:18:29,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:29" (1/1) ... [2021-02-21 21:18:29,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:29" (1/1) ... [2021-02-21 21:18:29,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:29" (1/1) ... [2021-02-21 21:18:29,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:18:29,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:18:29,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:18:29,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:18:29,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:29" (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 21:18:29,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:18:29,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:18:29,913 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:18:29,913 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:18:29,913 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2021-02-21 21:18:29,914 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:18:29,914 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:18:29,914 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:18:29,914 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:18:29,914 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:18:29,914 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:18:29,915 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2021-02-21 21:18:29,915 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:18:29,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:18:29,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:18:29,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:18:29,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:18:29,916 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:18:29,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:18:30,160 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:18:30,160 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-21 21:18:30,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:18:30 BoogieIcfgContainer [2021-02-21 21:18:30,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:18:30,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:18:30,165 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:18:30,170 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:18:30,170 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:18:29" (1/3) ... [2021-02-21 21:18:30,171 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae469d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:18:30, skipping insertion in model container [2021-02-21 21:18:30,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:18:29" (2/3) ... [2021-02-21 21:18:30,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ae469d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:18:30, skipping insertion in model container [2021-02-21 21:18:30,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:18:30" (3/3) ... [2021-02-21 21:18:30,175 INFO L111 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_3.c [2021-02-21 21:18:30,185 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:18:30,191 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:18:30,216 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:18:30,246 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:18:30,247 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:18:30,247 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:18:30,247 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:18:30,247 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:18:30,247 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:18:30,247 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:18:30,248 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:18:30,265 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2021-02-21 21:18:30,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-02-21 21:18:30,288 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:18:30,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 21:18:30,289 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:18:30,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:18:30,302 INFO L82 PathProgramCache]: Analyzing trace with hash -704668426, now seen corresponding path program 1 times [2021-02-21 21:18:30,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:18:30,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2114401888] [2021-02-21 21:18:30,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:18:30,451 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:18:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:18:30,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:30,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:18:30,671 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:30,672 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:18:30,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:18:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:18:30,821 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:30,822 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:18:30,831 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 21:18:30,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2114401888] [2021-02-21 21:18:30,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:18:30,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:18:30,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879918196] [2021-02-21 21:18:30,853 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:18:30,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:18:30,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:18:30,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:18:30,878 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2021-02-21 21:18:31,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:18:31,014 INFO L93 Difference]: Finished difference Result 48 states and 64 transitions. [2021-02-21 21:18:31,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:18:31,016 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2021-02-21 21:18:31,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:18:31,031 INFO L225 Difference]: With dead ends: 48 [2021-02-21 21:18:31,032 INFO L226 Difference]: Without dead ends: 28 [2021-02-21 21:18:31,037 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 21:18:31,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-02-21 21:18:31,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2021-02-21 21:18:31,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-02-21 21:18:31,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2021-02-21 21:18:31,118 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 18 [2021-02-21 21:18:31,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:18:31,119 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2021-02-21 21:18:31,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:18:31,119 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2021-02-21 21:18:31,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-21 21:18:31,122 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:18:31,122 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] [2021-02-21 21:18:31,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:18:31,123 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:18:31,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:18:31,124 INFO L82 PathProgramCache]: Analyzing trace with hash -2017543656, now seen corresponding path program 1 times [2021-02-21 21:18:31,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:18:31,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622086171] [2021-02-21 21:18:31,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:18:31,137 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:18:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:18:31,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:31,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:18:31,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:31,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:18:31,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:31,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:18:31,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:31,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 21:18:31,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:31,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:18:31,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:18:31,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:18:31,396 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:31,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:18:31,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-21 21:18:31,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:18:31,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:31,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:18:31,424 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:18:31,425 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:18:31,430 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 21:18:31,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622086171] [2021-02-21 21:18:31,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:18:31,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 21:18:31,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139409371] [2021-02-21 21:18:31,434 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 21:18:31,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:18:31,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 21:18:31,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-21 21:18:31,439 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 7 states. [2021-02-21 21:18:31,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:18:31,685 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2021-02-21 21:18:31,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-21 21:18:31,686 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2021-02-21 21:18:31,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:18:31,687 INFO L225 Difference]: With dead ends: 26 [2021-02-21 21:18:31,687 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 21:18:31,691 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-02-21 21:18:31,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 21:18:31,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 21:18:31,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 21:18:31,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 21:18:31,697 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2021-02-21 21:18:31,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:18:31,697 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 21:18:31,698 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 21:18:31,703 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 21:18:31,704 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 21:18:31,704 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:18:31,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 21:18:32,171 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-21 21:18:32,172 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-21 21:18:32,172 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-21 21:18:32,172 INFO L185 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2021-02-21 21:18:32,172 INFO L185 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2021-02-21 21:18:32,172 INFO L185 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2021-02-21 21:18:32,173 INFO L185 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2021-02-21 21:18:32,173 INFO L185 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2021-02-21 21:18:32,173 INFO L185 CegarLoopUtils]: At program point L3-5(line 3) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2021-02-21 21:18:32,173 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (= ~x~0 0) [2021-02-21 21:18:32,173 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 21:18:32,173 INFO L185 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2021-02-21 21:18:32,174 INFO L185 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2021-02-21 21:18:32,174 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (= ~x~0 0) [2021-02-21 21:18:32,174 INFO L185 CegarLoopUtils]: At program point evalENTRY(lines 14 21) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= |old(~x~0)| 0))) [2021-02-21 21:18:32,174 INFO L185 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= |old(~x~0)| 0))) [2021-02-21 21:18:32,174 INFO L185 CegarLoopUtils]: At program point L16-1(lines 14 21) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= |old(~x~0)| 0))) [2021-02-21 21:18:32,175 INFO L185 CegarLoopUtils]: At program point evalEXIT(lines 14 21) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= |old(~x~0)| 0))) [2021-02-21 21:18:32,175 INFO L185 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: false [2021-02-21 21:18:32,175 INFO L185 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (= ~x~0 0) [2021-02-21 21:18:32,175 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 21:18:32,175 INFO L185 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: false [2021-02-21 21:18:32,175 INFO L185 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: (not (= |old(~x~0)| 0)) [2021-02-21 21:18:32,176 INFO L185 CegarLoopUtils]: At program point L29(lines 24 35) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= |old(~x~0)| 0))) [2021-02-21 21:18:32,176 INFO L185 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= |old(~x~0)| 0))) [2021-02-21 21:18:32,176 INFO L185 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= |old(~x~0)| 0))) [2021-02-21 21:18:32,176 INFO L185 CegarLoopUtils]: At program point L26-1(lines 26 30) the Hoare annotation is: (not (= |old(~x~0)| 0)) [2021-02-21 21:18:32,176 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 24 35) the Hoare annotation is: (not (= |old(~x~0)| 0)) [2021-02-21 21:18:32,176 INFO L185 CegarLoopUtils]: At program point mainFINAL(lines 24 35) the Hoare annotation is: (not (= |old(~x~0)| 0)) [2021-02-21 21:18:32,176 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-02-21 21:18:32,177 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: (or (not (= ~x~0 0)) (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:18:32,177 INFO L185 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= ~x~0 0))) [2021-02-21 21:18:32,177 INFO L185 CegarLoopUtils]: At program point L6(lines 6 8) the Hoare annotation is: (or (not (= ~x~0 0)) (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:18:32,177 INFO L185 CegarLoopUtils]: At program point L7-1(line 7) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= ~x~0 0))) [2021-02-21 21:18:32,177 INFO L185 CegarLoopUtils]: At program point L6-2(lines 5 10) the Hoare annotation is: (or (not (= ~x~0 0)) (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-21 21:18:32,178 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= ~x~0 0))) [2021-02-21 21:18:32,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:18:32 BoogieIcfgContainer [2021-02-21 21:18:32,197 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:18:32,199 INFO L168 Benchmark]: Toolchain (without parser) took 2796.96 ms. Allocated memory is still 167.8 MB. Free memory was 143.7 MB in the beginning and 66.4 MB in the end (delta: 77.3 MB). Peak memory consumption was 78.3 MB. Max. memory is 8.0 GB. [2021-02-21 21:18:32,200 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 167.8 MB. Free memory is still 149.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:18:32,200 INFO L168 Benchmark]: CACSL2BoogieTranslator took 332.79 ms. Allocated memory is still 167.8 MB. Free memory was 142.7 MB in the beginning and 133.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:18:32,201 INFO L168 Benchmark]: Boogie Preprocessor took 54.57 ms. Allocated memory is still 167.8 MB. Free memory was 133.2 MB in the beginning and 131.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:18:32,202 INFO L168 Benchmark]: RCFGBuilder took 352.05 ms. Allocated memory is still 167.8 MB. Free memory was 131.6 MB in the beginning and 118.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-21 21:18:32,203 INFO L168 Benchmark]: TraceAbstraction took 2032.79 ms. Allocated memory is still 167.8 MB. Free memory was 118.0 MB in the beginning and 66.4 MB in the end (delta: 51.6 MB). Peak memory consumption was 52.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:18:32,206 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 167.8 MB. Free memory is still 149.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 332.79 ms. Allocated memory is still 167.8 MB. Free memory was 142.7 MB in the beginning and 133.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 54.57 ms. Allocated memory is still 167.8 MB. Free memory was 133.2 MB in the beginning and 131.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 352.05 ms. Allocated memory is still 167.8 MB. Free memory was 131.6 MB in the beginning and 118.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2032.79 ms. Allocated memory is still 167.8 MB. Free memory was 118.0 MB in the beginning and 66.4 MB in the end (delta: 51.6 MB). Peak memory consumption was 52.1 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 - ProcedureContractResult [Line: 14]: Procedure Contract for eval Derived contract for procedure eval: x == \old(x) || !(\old(x) == 0) - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: !(\old(x) == 0) - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: (!(x == 0) || \old(cond) == 0) || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 47 SDtfs, 34 SDslu, 45 SDs, 0 SdLazy, 40 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 33 LocationsWithAnnotation, 51 PreInvPairs, 58 NumberOfFragments, 203 HoareAnnotationTreeSize, 51 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 33 FomulaSimplificationsInter, 409 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...