/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/loop-new/half.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 02:09:36,127 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 02:09:36,130 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 02:09:36,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 02:09:36,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 02:09:36,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 02:09:36,256 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 02:09:36,257 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 02:09:36,284 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 02:09:36,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 02:09:36,289 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 02:09:36,289 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 02:09:36,289 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 02:09:36,290 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 02:09:36,290 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 02:09:36,290 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 02:09:36,290 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 02:09:36,290 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 02:09:36,292 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 02:09:36,292 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 02:09:36,292 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 02:09:36,293 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 02:09:36,294 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 02:09:36,294 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 02:09:36,294 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 02:09:36,294 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 02:09:36,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:09:36,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 02:09:36,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 02:09:36,295 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 02:09:36,295 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 02:09:36,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 02:09:36,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 02:09:36,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 02:09:36,738 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 02:09:36,739 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 02:09:36,740 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/half.i [2020-11-07 02:09:36,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23e5e9f7d/7821646665fe4bc986268810d8da1517/FLAG445e05332 [2020-11-07 02:09:37,591 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 02:09:37,592 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/half.i [2020-11-07 02:09:37,601 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23e5e9f7d/7821646665fe4bc986268810d8da1517/FLAG445e05332 [2020-11-07 02:09:37,927 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23e5e9f7d/7821646665fe4bc986268810d8da1517 [2020-11-07 02:09:37,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 02:09:37,947 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 02:09:37,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 02:09:37,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 02:09:37,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 02:09:37,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:09:37" (1/1) ... [2020-11-07 02:09:37,962 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3470b7be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:37, skipping insertion in model container [2020-11-07 02:09:37,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:09:37" (1/1) ... [2020-11-07 02:09:37,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 02:09:37,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 02:09:38,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:09:38,216 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 02:09:38,234 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:09:38,251 INFO L208 MainTranslator]: Completed translation [2020-11-07 02:09:38,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:38 WrapperNode [2020-11-07 02:09:38,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 02:09:38,254 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 02:09:38,254 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 02:09:38,254 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 02:09:38,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:38" (1/1) ... [2020-11-07 02:09:38,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:38" (1/1) ... [2020-11-07 02:09:38,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:38" (1/1) ... [2020-11-07 02:09:38,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:38" (1/1) ... [2020-11-07 02:09:38,282 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:38" (1/1) ... [2020-11-07 02:09:38,287 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:38" (1/1) ... [2020-11-07 02:09:38,289 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:38" (1/1) ... [2020-11-07 02:09:38,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 02:09:38,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 02:09:38,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 02:09:38,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 02:09:38,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:38" (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 [2020-11-07 02:09:38,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 02:09:38,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 02:09:38,381 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 02:09:38,381 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 02:09:38,381 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 02:09:38,381 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 02:09:38,382 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 02:09:38,382 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 02:09:38,382 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-07 02:09:38,382 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-07 02:09:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 02:09:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 02:09:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 02:09:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 02:09:38,383 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 02:09:38,384 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 02:09:38,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 02:09:38,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 02:09:38,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 02:09:38,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 02:09:38,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 02:09:38,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 02:09:38,800 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 02:09:38,801 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 02:09:38,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:09:38 BoogieIcfgContainer [2020-11-07 02:09:38,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 02:09:38,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 02:09:38,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 02:09:38,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 02:09:38,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:09:37" (1/3) ... [2020-11-07 02:09:38,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ea0367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:09:38, skipping insertion in model container [2020-11-07 02:09:38,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:09:38" (2/3) ... [2020-11-07 02:09:38,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48ea0367 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:09:38, skipping insertion in model container [2020-11-07 02:09:38,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:09:38" (3/3) ... [2020-11-07 02:09:38,863 INFO L111 eAbstractionObserver]: Analyzing ICFG half.i [2020-11-07 02:09:38,882 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 02:09:38,886 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 02:09:38,900 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 02:09:38,929 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 02:09:38,929 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 02:09:38,930 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 02:09:38,930 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 02:09:38,930 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 02:09:38,930 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 02:09:38,930 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 02:09:38,931 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 02:09:38,950 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-11-07 02:09:38,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-07 02:09:38,962 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:09:38,964 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] [2020-11-07 02:09:38,964 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:09:38,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:09:38,971 INFO L82 PathProgramCache]: Analyzing trace with hash 340170805, now seen corresponding path program 1 times [2020-11-07 02:09:38,982 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:09:38,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153104937] [2020-11-07 02:09:38,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:09:39,072 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:09:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:39,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:09:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:39,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:09:39,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153104937] [2020-11-07 02:09:39,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:09:39,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 02:09:39,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107699517] [2020-11-07 02:09:39,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 02:09:39,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:09:39,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 02:09:39,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 02:09:39,316 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 3 states. [2020-11-07 02:09:39,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:09:39,444 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2020-11-07 02:09:39,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 02:09:39,447 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-11-07 02:09:39,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:09:39,457 INFO L225 Difference]: With dead ends: 59 [2020-11-07 02:09:39,457 INFO L226 Difference]: Without dead ends: 33 [2020-11-07 02:09:39,461 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 [2020-11-07 02:09:39,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-07 02:09:39,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-11-07 02:09:39,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-07 02:09:39,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-11-07 02:09:39,521 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 25 [2020-11-07 02:09:39,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:09:39,522 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-11-07 02:09:39,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 02:09:39,522 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-11-07 02:09:39,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-07 02:09:39,524 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:09:39,524 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] [2020-11-07 02:09:39,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 02:09:39,525 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:09:39,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:09:39,526 INFO L82 PathProgramCache]: Analyzing trace with hash -974986203, now seen corresponding path program 1 times [2020-11-07 02:09:39,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:09:39,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260828124] [2020-11-07 02:09:39,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:09:39,531 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:09:39,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:39,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:09:39,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:40,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:09:40,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260828124] [2020-11-07 02:09:40,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:09:40,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 02:09:40,005 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423514313] [2020-11-07 02:09:40,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 02:09:40,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:09:40,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 02:09:40,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-11-07 02:09:40,009 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 8 states. [2020-11-07 02:09:40,446 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 32 [2020-11-07 02:09:40,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:09:40,599 INFO L93 Difference]: Finished difference Result 55 states and 59 transitions. [2020-11-07 02:09:40,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-07 02:09:40,600 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-11-07 02:09:40,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:09:40,601 INFO L225 Difference]: With dead ends: 55 [2020-11-07 02:09:40,601 INFO L226 Difference]: Without dead ends: 37 [2020-11-07 02:09:40,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-11-07 02:09:40,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-07 02:09:40,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-11-07 02:09:40,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-07 02:09:40,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-11-07 02:09:40,616 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 25 [2020-11-07 02:09:40,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:09:40,616 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-11-07 02:09:40,616 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 02:09:40,617 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-11-07 02:09:40,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-07 02:09:40,618 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:09:40,618 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:09:40,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 02:09:40,618 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:09:40,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:09:40,619 INFO L82 PathProgramCache]: Analyzing trace with hash -27000676, now seen corresponding path program 1 times [2020-11-07 02:09:40,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:09:40,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [611551644] [2020-11-07 02:09:40,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:09:40,743 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:09:40,746 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:09:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:40,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:09:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:40,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:09:40,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [611551644] [2020-11-07 02:09:40,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:09:40,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 02:09:40,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630878147] [2020-11-07 02:09:40,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 02:09:40,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:09:40,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 02:09:40,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-11-07 02:09:40,965 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 10 states. [2020-11-07 02:09:41,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:09:41,403 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-11-07 02:09:41,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-07 02:09:41,404 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-11-07 02:09:41,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:09:41,406 INFO L225 Difference]: With dead ends: 49 [2020-11-07 02:09:41,406 INFO L226 Difference]: Without dead ends: 42 [2020-11-07 02:09:41,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2020-11-07 02:09:41,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-07 02:09:41,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-11-07 02:09:41,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-07 02:09:41,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-11-07 02:09:41,420 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 33 [2020-11-07 02:09:41,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:09:41,420 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-11-07 02:09:41,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 02:09:41,420 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-11-07 02:09:41,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-07 02:09:41,422 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:09:41,422 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:09:41,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 02:09:41,423 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:09:41,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:09:41,423 INFO L82 PathProgramCache]: Analyzing trace with hash 689235082, now seen corresponding path program 1 times [2020-11-07 02:09:41,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:09:41,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851997943] [2020-11-07 02:09:41,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:09:42,885 WARN L194 SmtUtils]: Spent 904.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-11-07 02:09:42,907 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:09:42,910 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:09:42,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:43,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:09:43,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:43,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:09:43,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851997943] [2020-11-07 02:09:43,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:09:43,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-11-07 02:09:43,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154146525] [2020-11-07 02:09:43,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-07 02:09:43,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:09:43,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-07 02:09:43,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-11-07 02:09:43,467 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 15 states. [2020-11-07 02:09:44,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:09:44,790 INFO L93 Difference]: Finished difference Result 70 states and 75 transitions. [2020-11-07 02:09:44,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-07 02:09:44,791 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 38 [2020-11-07 02:09:44,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:09:44,793 INFO L225 Difference]: With dead ends: 70 [2020-11-07 02:09:44,793 INFO L226 Difference]: Without dead ends: 52 [2020-11-07 02:09:44,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=156, Invalid=900, Unknown=0, NotChecked=0, Total=1056 [2020-11-07 02:09:44,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-07 02:09:44,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2020-11-07 02:09:44,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-07 02:09:44,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-11-07 02:09:44,812 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 38 [2020-11-07 02:09:44,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:09:44,812 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-11-07 02:09:44,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-07 02:09:44,813 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-11-07 02:09:44,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-07 02:09:44,814 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:09:44,815 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:09:44,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 02:09:44,815 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:09:44,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:09:44,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1902785535, now seen corresponding path program 2 times [2020-11-07 02:09:44,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:09:44,817 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200438228] [2020-11-07 02:09:44,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:09:45,070 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:09:45,073 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:09:45,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:45,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:09:45,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:45,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:09:45,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200438228] [2020-11-07 02:09:45,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:09:45,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-11-07 02:09:45,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875846819] [2020-11-07 02:09:45,392 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-07 02:09:45,392 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:09:45,392 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-07 02:09:45,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-11-07 02:09:45,393 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 16 states. [2020-11-07 02:09:46,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:09:46,877 INFO L93 Difference]: Finished difference Result 75 states and 80 transitions. [2020-11-07 02:09:46,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-07 02:09:46,878 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 46 [2020-11-07 02:09:46,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:09:46,881 INFO L225 Difference]: With dead ends: 75 [2020-11-07 02:09:46,881 INFO L226 Difference]: Without dead ends: 55 [2020-11-07 02:09:46,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=206, Invalid=984, Unknown=0, NotChecked=0, Total=1190 [2020-11-07 02:09:46,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-11-07 02:09:46,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2020-11-07 02:09:46,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-07 02:09:46,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2020-11-07 02:09:46,898 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 46 [2020-11-07 02:09:46,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:09:46,899 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2020-11-07 02:09:46,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-07 02:09:46,899 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2020-11-07 02:09:46,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-07 02:09:46,901 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:09:46,901 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 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] [2020-11-07 02:09:46,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 02:09:46,902 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:09:46,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:09:46,902 INFO L82 PathProgramCache]: Analyzing trace with hash 597913669, now seen corresponding path program 3 times [2020-11-07 02:09:46,903 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:09:46,903 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071185630] [2020-11-07 02:09:46,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:09:47,278 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 02:09:47,280 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:09:47,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:47,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:09:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:09:47,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:09:47,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071185630] [2020-11-07 02:09:47,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:09:47,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-11-07 02:09:47,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300112752] [2020-11-07 02:09:47,893 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-07 02:09:47,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:09:47,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-07 02:09:47,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2020-11-07 02:09:47,895 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 20 states. [2020-11-07 02:09:49,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:09:49,614 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-11-07 02:09:49,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-07 02:09:49,614 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 51 [2020-11-07 02:09:49,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:09:49,615 INFO L225 Difference]: With dead ends: 68 [2020-11-07 02:09:49,615 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 02:09:49,617 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 291 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=197, Invalid=1443, Unknown=0, NotChecked=0, Total=1640 [2020-11-07 02:09:49,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 02:09:49,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 02:09:49,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 02:09:49,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 02:09:49,618 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2020-11-07 02:09:49,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:09:49,618 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 02:09:49,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-07 02:09:49,619 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 02:09:49,619 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 02:09:49,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 02:09:49,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 02:09:50,135 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 25 [2020-11-07 02:09:50,249 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 24 [2020-11-07 02:09:50,774 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 12) the Hoare annotation is: true [2020-11-07 02:09:50,774 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-11-07 02:09:50,774 INFO L269 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-11-07 02:09:50,775 INFO L269 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-11-07 02:09:50,775 INFO L269 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-11-07 02:09:50,775 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: true [2020-11-07 02:09:50,775 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 02:09:50,775 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 02:09:50,776 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2020-11-07 02:09:50,776 INFO L269 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-11-07 02:09:50,776 INFO L269 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-11-07 02:09:50,776 INFO L269 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-11-07 02:09:50,776 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-11-07 02:09:50,776 INFO L269 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-11-07 02:09:50,777 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 02:09:50,777 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 02:09:50,777 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 02:09:50,777 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 02:09:50,777 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 02:09:50,777 INFO L266 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-11-07 02:09:50,778 INFO L266 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-11-07 02:09:50,778 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-11-07 02:09:50,778 INFO L266 CegarLoopResult]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2020-11-07 02:09:50,778 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-11-07 02:09:50,778 INFO L262 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (let ((.cse0 (* 2 main_~n~0))) (and (<= .cse0 main_~i~0) (<= main_~i~0 .cse0) (<= (+ main_~i~0 1) (* 2 main_~k~0)))) [2020-11-07 02:09:50,778 INFO L262 CegarLoopResult]: At program point L31-1(line 31) the Hoare annotation is: (let ((.cse1 (* 2 main_~n~0)) (.cse0 (* 2 |main_#t~post5|))) (and (<= main_~i~0 .cse0) (<= .cse1 main_~i~0) (<= main_~i~0 .cse1) (<= .cse0 main_~i~0) (<= (+ main_~i~0 1) (* 2 main_~k~0)))) [2020-11-07 02:09:50,779 INFO L262 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (= main_~n~0 0) [2020-11-07 02:09:50,788 INFO L262 CegarLoopResult]: At program point L31-2(line 31) the Hoare annotation is: (let ((.cse0 (* 2 |main_#t~post5|)) (.cse2 (* 2 main_~n~0)) (.cse1 (+ main_~i~0 2))) (and (<= main_~i~0 .cse0) (<= .cse1 .cse2) (<= .cse0 main_~i~0) (<= .cse2 .cse1) (<= (+ main_~i~0 1) (* 2 main_~k~0)))) [2020-11-07 02:09:50,788 INFO L262 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (= main_~n~0 0) [2020-11-07 02:09:50,789 INFO L262 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: (= main_~n~0 0) [2020-11-07 02:09:50,789 INFO L262 CegarLoopResult]: At program point L29-3(lines 29 33) the Hoare annotation is: (let ((.cse3 (+ main_~i~0 1))) (let ((.cse1 (* 2 main_~n~0)) (.cse2 (<= .cse3 (* 2 main_~k~0)))) (or (let ((.cse0 (+ main_~i~0 2))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) .cse2)) (and (<= .cse1 .cse3) (<= .cse3 .cse1) .cse2)))) [2020-11-07 02:09:50,789 INFO L262 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: (= main_~n~0 0) [2020-11-07 02:09:50,789 INFO L262 CegarLoopResult]: At program point L29-4(line 29) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 1))) (let ((.cse0 (* 2 main_~n~0)) (.cse3 (<= .cse1 (* 2 main_~k~0)))) (or (let ((.cse2 (+ |main_#t~post4| 1))) (and (<= .cse0 .cse1) (<= .cse2 .cse0) (<= .cse0 .cse2) (<= .cse1 .cse0) .cse3)) (let ((.cse4 (+ |main_#t~post4| 2)) (.cse5 (+ main_~i~0 2))) (and (<= .cse4 .cse0) (<= .cse0 .cse4) (<= .cse5 .cse0) (<= .cse0 .cse5) .cse3))))) [2020-11-07 02:09:50,790 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 24 36) the Hoare annotation is: true [2020-11-07 02:09:50,790 INFO L262 CegarLoopResult]: At program point L29-5(line 29) the Hoare annotation is: (let ((.cse1 (* 2 main_~n~0))) (or (let ((.cse0 (+ |main_#t~post4| 1))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse1 main_~i~0) (<= main_~i~0 .cse1) (< main_~n~0 (+ main_~k~0 1)))) (let ((.cse3 (+ |main_#t~post4| 2)) (.cse2 (+ main_~i~0 1))) (and (<= .cse1 .cse2) (<= .cse2 .cse1) (<= .cse3 .cse1) (<= .cse1 .cse3) (<= .cse2 (* 2 main_~k~0)))))) [2020-11-07 02:09:50,790 INFO L262 CegarLoopResult]: At program point L29-6(lines 29 33) the Hoare annotation is: (let ((.cse0 (* 2 main_~n~0))) (or (let ((.cse1 (+ main_~i~0 1))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse1 (* 2 main_~k~0)))) (and (= main_~i~0 0) (= main_~n~0 0)) (and (<= .cse0 main_~i~0) (<= main_~i~0 .cse0) (< main_~n~0 (+ main_~k~0 1))))) [2020-11-07 02:09:50,790 INFO L262 CegarLoopResult]: At program point L29-7(lines 29 33) the Hoare annotation is: (or (and (<= main_~k~0 main_~n~0) (< main_~n~0 (+ main_~k~0 1))) (and (= main_~i~0 0) (= main_~n~0 0) (<= main_~k~0 0))) [2020-11-07 02:09:50,790 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 24 36) the Hoare annotation is: true [2020-11-07 02:09:50,790 INFO L269 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: true [2020-11-07 02:09:50,791 INFO L262 CegarLoopResult]: At program point L30(lines 30 32) the Hoare annotation is: (let ((.cse2 (+ main_~i~0 1))) (let ((.cse0 (* 2 main_~n~0)) (.cse1 (<= .cse2 (* 2 main_~k~0)))) (or (and (<= .cse0 main_~i~0) (<= main_~i~0 .cse0) .cse1) (and (<= .cse0 .cse2) (<= .cse2 .cse0) .cse1)))) [2020-11-07 02:09:50,791 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 24 36) the Hoare annotation is: true [2020-11-07 02:09:50,791 INFO L262 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (= main_~n~0 0) [2020-11-07 02:09:50,791 INFO L269 CegarLoopResult]: At program point L28-1(line 28) the Hoare annotation is: true [2020-11-07 02:09:50,791 INFO L269 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: true [2020-11-07 02:09:50,791 INFO L269 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2020-11-07 02:09:50,792 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-11-07 02:09:50,792 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: true [2020-11-07 02:09:50,792 INFO L262 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 02:09:50,792 INFO L262 CegarLoopResult]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 02:09:50,792 INFO L262 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 02:09:50,813 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:09:50 BoogieIcfgContainer [2020-11-07 02:09:50,813 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 02:09:50,815 INFO L168 Benchmark]: Toolchain (without parser) took 12874.81 ms. Allocated memory was 125.8 MB in the beginning and 199.2 MB in the end (delta: 73.4 MB). Free memory was 102.8 MB in the beginning and 180.6 MB in the end (delta: -77.8 MB). Peak memory consumption was 111.6 MB. Max. memory is 8.0 GB. [2020-11-07 02:09:50,816 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory is still 87.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 02:09:50,817 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.63 ms. Allocated memory is still 125.8 MB. Free memory was 102.2 MB in the beginning and 92.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 02:09:50,817 INFO L168 Benchmark]: Boogie Preprocessor took 37.91 ms. Allocated memory is still 125.8 MB. Free memory was 92.7 MB in the beginning and 91.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 02:09:50,818 INFO L168 Benchmark]: RCFGBuilder took 514.31 ms. Allocated memory is still 125.8 MB. Free memory was 91.2 MB in the beginning and 75.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-11-07 02:09:50,819 INFO L168 Benchmark]: TraceAbstraction took 12004.58 ms. Allocated memory was 125.8 MB in the beginning and 199.2 MB in the end (delta: 73.4 MB). Free memory was 75.1 MB in the beginning and 180.6 MB in the end (delta: -105.5 MB). Peak memory consumption was 84.3 MB. Max. memory is 8.0 GB. [2020-11-07 02:09:50,823 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory is still 87.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 299.63 ms. Allocated memory is still 125.8 MB. Free memory was 102.2 MB in the beginning and 92.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.91 ms. Allocated memory is still 125.8 MB. Free memory was 92.7 MB in the beginning and 91.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 514.31 ms. Allocated memory is still 125.8 MB. Free memory was 91.2 MB in the beginning and 75.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 12004.58 ms. Allocated memory was 125.8 MB in the beginning and 199.2 MB in the end (delta: 73.4 MB). Free memory was 75.1 MB in the beginning and 180.6 MB in the end (delta: -105.5 MB). Peak memory consumption was 84.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: (((2 * n <= i + 1 && i + 1 <= 2 * n) && i + 1 <= 2 * k) || (i == 0 && n == 0)) || ((2 * n <= i && i <= 2 * n) && n < k + 1) - ProcedureContractResult [Line: 12]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 50 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.6s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 174 SDtfs, 271 SDslu, 625 SDs, 0 SdLazy, 1126 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 151 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=5, 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, 6 MinimizatonAttempts, 9 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 45 LocationsWithAnnotation, 123 PreInvPairs, 173 NumberOfFragments, 451 HoareAnnotationTreeSize, 123 FomulaSimplifications, 1660 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 45 FomulaSimplificationsInter, 1299 FormulaSimplificationTreeSizeReductionInter, 0.8s 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...