/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/terminator_02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:58:03,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:58:03,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:58:03,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 01:58:03,220 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 01:58:03,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 01:58:03,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 01:58:03,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 01:58:03,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 01:58:03,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 01:58:03,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 01:58:03,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 01:58:03,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:58:03,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:58:03,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:58:03,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:58:03,261 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:58:03,263 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:58:03,265 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:58:03,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:58:03,270 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:58:03,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:58:03,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:58:03,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:58:03,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 01:58:03,283 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 01:58:03,283 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 01:58:03,285 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 01:58:03,285 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 01:58:03,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 01:58:03,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 01:58:03,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 01:58:03,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 01:58:03,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 01:58:03,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 01:58:03,294 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 01:58:03,295 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 01:58:03,296 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 01:58:03,296 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:58:03,297 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:58:03,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:58:03,304 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 01:58:03,321 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:58:03,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:58:03,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:58:03,324 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:58:03,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:58:03,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:58:03,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:58:03,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:58:03,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:58:03,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:58:03,326 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:58:03,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:58:03,326 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:58:03,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:58:03,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:58:03,327 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:58:03,327 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:58:03,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:58:03,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:58:03,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:58:03,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:58:03,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:58:03,328 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:58:03,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:58:03,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:58:03,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:58:03,795 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:58:03,796 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:58:03,797 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_02-2.c [2020-11-07 01:58:03,923 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea9c2c57f/4839eaa5f0dd4a61b2943b5366589647/FLAGac758870c [2020-11-07 01:58:04,651 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:58:04,652 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_02-2.c [2020-11-07 01:58:04,661 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea9c2c57f/4839eaa5f0dd4a61b2943b5366589647/FLAGac758870c [2020-11-07 01:58:05,057 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea9c2c57f/4839eaa5f0dd4a61b2943b5366589647 [2020-11-07 01:58:05,061 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:58:05,074 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:58:05,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:58:05,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:58:05,087 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:58:05,088 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:58:05" (1/1) ... [2020-11-07 01:58:05,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a0bf3c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:05, skipping insertion in model container [2020-11-07 01:58:05,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:58:05" (1/1) ... [2020-11-07 01:58:05,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:58:05,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:58:05,437 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:58:05,449 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:58:05,469 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:58:05,488 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:58:05,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:05 WrapperNode [2020-11-07 01:58:05,490 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:58:05,491 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:58:05,492 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:58:05,492 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:58:05,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:05" (1/1) ... [2020-11-07 01:58:05,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:05" (1/1) ... [2020-11-07 01:58:05,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:05" (1/1) ... [2020-11-07 01:58:05,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:05" (1/1) ... [2020-11-07 01:58:05,526 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:05" (1/1) ... [2020-11-07 01:58:05,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:05" (1/1) ... [2020-11-07 01:58:05,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:05" (1/1) ... [2020-11-07 01:58:05,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:58:05,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:58:05,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:58:05,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:58:05,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:05" (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 01:58:05,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:58:05,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:58:05,638 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:58:05,638 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 01:58:05,639 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 01:58:05,639 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:58:05,639 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:58:05,640 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:58:05,640 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:58:05,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:58:05,640 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 01:58:05,640 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 01:58:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 01:58:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-11-07 01:58:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:58:05,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:58:05,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:58:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:58:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:58:05,643 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:58:05,645 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:58:06,145 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:58:06,145 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 01:58:06,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:58:06 BoogieIcfgContainer [2020-11-07 01:58:06,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:58:06,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:58:06,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:58:06,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:58:06,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:58:05" (1/3) ... [2020-11-07 01:58:06,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e38797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:58:06, skipping insertion in model container [2020-11-07 01:58:06,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:58:05" (2/3) ... [2020-11-07 01:58:06,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43e38797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:58:06, skipping insertion in model container [2020-11-07 01:58:06,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:58:06" (3/3) ... [2020-11-07 01:58:06,159 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_02-2.c [2020-11-07 01:58:06,178 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:58:06,182 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:58:06,197 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:58:06,227 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:58:06,227 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:58:06,227 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:58:06,228 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:58:06,228 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:58:06,228 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:58:06,228 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:58:06,228 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:58:06,248 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-11-07 01:58:06,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-07 01:58:06,260 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:58:06,261 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] [2020-11-07 01:58:06,262 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:58:06,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:58:06,269 INFO L82 PathProgramCache]: Analyzing trace with hash -2111385450, now seen corresponding path program 1 times [2020-11-07 01:58:06,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:58:06,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529457818] [2020-11-07 01:58:06,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:58:06,374 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:58:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:58:06,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:58:06,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:58:06,605 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 01:58:06,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529457818] [2020-11-07 01:58:06,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:58:06,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 01:58:06,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562731421] [2020-11-07 01:58:06,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 01:58:06,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:58:06,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 01:58:06,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:58:06,638 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 3 states. [2020-11-07 01:58:06,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:58:06,760 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2020-11-07 01:58:06,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 01:58:06,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-11-07 01:58:06,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:58:06,775 INFO L225 Difference]: With dead ends: 68 [2020-11-07 01:58:06,776 INFO L226 Difference]: Without dead ends: 41 [2020-11-07 01:58:06,782 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 01:58:06,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-07 01:58:06,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-11-07 01:58:06,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-07 01:58:06,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2020-11-07 01:58:06,847 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 28 [2020-11-07 01:58:06,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:58:06,848 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2020-11-07 01:58:06,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 01:58:06,848 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2020-11-07 01:58:06,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-07 01:58:06,849 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:58:06,850 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] [2020-11-07 01:58:06,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:58:06,850 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:58:06,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:58:06,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1582369675, now seen corresponding path program 1 times [2020-11-07 01:58:06,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:58:06,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1845775790] [2020-11-07 01:58:06,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:58:06,859 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:58:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:58:07,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:58:07,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:58:07,228 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 01:58:07,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1845775790] [2020-11-07 01:58:07,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:58:07,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 01:58:07,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413353741] [2020-11-07 01:58:07,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 01:58:07,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:58:07,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 01:58:07,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-07 01:58:07,236 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 7 states. [2020-11-07 01:58:07,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:58:07,651 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2020-11-07 01:58:07,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-07 01:58:07,652 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-11-07 01:58:07,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:58:07,653 INFO L225 Difference]: With dead ends: 43 [2020-11-07 01:58:07,653 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 01:58:07,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-11-07 01:58:07,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 01:58:07,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 01:58:07,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 01:58:07,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 01:58:07,657 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2020-11-07 01:58:07,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:58:07,657 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 01:58:07,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 01:58:07,657 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 01:58:07,658 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 01:58:07,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:58:07,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 01:58:08,410 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-11-07 01:58:08,411 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-07 01:58:08,412 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-11-07 01:58:08,412 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-11-07 01:58:08,412 INFO L269 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-11-07 01:58:08,412 INFO L269 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-11-07 01:58:08,412 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 01:58:08,413 INFO L269 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-11-07 01:58:08,413 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 01:58:08,413 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-11-07 01:58:08,414 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-11-07 01:58:08,415 INFO L269 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-11-07 01:58:08,415 INFO L269 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-11-07 01:58:08,416 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 01:58:08,417 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 01:58:08,418 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 01:58:08,418 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 01:58:08,418 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 01:58:08,418 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2020-11-07 01:58:08,419 INFO L266 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-11-07 01:58:08,419 INFO L266 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-11-07 01:58:08,419 INFO L266 CegarLoopResult]: For program point L7-3(lines 6 8) no Hoare annotation was computed. [2020-11-07 01:58:08,419 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2020-11-07 01:58:08,419 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 18 40) the Hoare annotation is: true [2020-11-07 01:58:08,419 INFO L269 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-11-07 01:58:08,419 INFO L269 CegarLoopResult]: At program point L23-1(line 23) the Hoare annotation is: true [2020-11-07 01:58:08,420 INFO L262 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (< 100 main_~z~0) [2020-11-07 01:58:08,420 INFO L262 CegarLoopResult]: At program point L32-1(line 32) the Hoare annotation is: (< 100 main_~z~0) [2020-11-07 01:58:08,422 INFO L262 CegarLoopResult]: At program point L32-2(line 32) the Hoare annotation is: (< 100 main_~z~0) [2020-11-07 01:58:08,423 INFO L262 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (< 100 main_~z~0) [2020-11-07 01:58:08,423 INFO L262 CegarLoopResult]: At program point L28-1(line 28) the Hoare annotation is: (< 100 main_~z~0) [2020-11-07 01:58:08,424 INFO L269 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: true [2020-11-07 01:58:08,424 INFO L269 CegarLoopResult]: At program point L24-1(line 24) the Hoare annotation is: true [2020-11-07 01:58:08,425 INFO L269 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: true [2020-11-07 01:58:08,425 INFO L269 CegarLoopResult]: At program point L20-1(line 20) the Hoare annotation is: true [2020-11-07 01:58:08,426 INFO L269 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: true [2020-11-07 01:58:08,426 INFO L262 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (< 100 main_~z~0) [2020-11-07 01:58:08,426 INFO L262 CegarLoopResult]: At program point L33-1(line 33) the Hoare annotation is: (< 100 main_~z~0) [2020-11-07 01:58:08,426 INFO L269 CegarLoopResult]: At program point L33-2(line 33) the Hoare annotation is: true [2020-11-07 01:58:08,427 INFO L262 CegarLoopResult]: At program point L29(lines 29 34) the Hoare annotation is: (< 100 main_~z~0) [2020-11-07 01:58:08,428 INFO L269 CegarLoopResult]: At program point L29-2(lines 26 35) the Hoare annotation is: true [2020-11-07 01:58:08,428 INFO L262 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (< 100 main_~z~0) [2020-11-07 01:58:08,428 INFO L269 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: true [2020-11-07 01:58:08,428 INFO L269 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: true [2020-11-07 01:58:08,428 INFO L269 CegarLoopResult]: At program point L21-1(line 21) the Hoare annotation is: true [2020-11-07 01:58:08,428 INFO L269 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: true [2020-11-07 01:58:08,429 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 18 40) the Hoare annotation is: true [2020-11-07 01:58:08,429 INFO L262 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (< 100 main_~z~0) [2020-11-07 01:58:08,429 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 18 40) the Hoare annotation is: true [2020-11-07 01:58:08,430 INFO L262 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (< 100 main_~z~0) [2020-11-07 01:58:08,430 INFO L262 CegarLoopResult]: At program point L30-2(line 30) the Hoare annotation is: (< 100 main_~z~0) [2020-11-07 01:58:08,430 INFO L262 CegarLoopResult]: At program point L26-2(lines 26 35) the Hoare annotation is: (or (<= main_~z~0 100) (<= 100 main_~x~0)) [2020-11-07 01:58:08,430 INFO L269 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-11-07 01:58:08,430 INFO L269 CegarLoopResult]: At program point L22-1(line 22) the Hoare annotation is: true [2020-11-07 01:58:08,430 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 9 14) the Hoare annotation is: true [2020-11-07 01:58:08,431 INFO L262 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 01:58:08,431 INFO L262 CegarLoopResult]: At program point L10(lines 10 12) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 01:58:08,431 INFO L262 CegarLoopResult]: At program point L11-1(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 01:58:08,431 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 9 14) the Hoare annotation is: true [2020-11-07 01:58:08,431 INFO L269 CegarLoopResult]: At program point L10-2(lines 9 14) the Hoare annotation is: true [2020-11-07 01:58:08,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:58:08 BoogieIcfgContainer [2020-11-07 01:58:08,451 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 01:58:08,454 INFO L168 Benchmark]: Toolchain (without parser) took 3387.99 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 127.9 MB in the beginning and 123.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 81.3 MB. Max. memory is 8.0 GB. [2020-11-07 01:58:08,455 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:58:08,458 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.03 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 117.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 01:58:08,459 INFO L168 Benchmark]: Boogie Preprocessor took 46.18 ms. Allocated memory is still 151.0 MB. Free memory was 117.7 MB in the beginning and 116.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 01:58:08,460 INFO L168 Benchmark]: RCFGBuilder took 609.62 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 130.2 MB in the end (delta: -14.0 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:58:08,461 INFO L168 Benchmark]: TraceAbstraction took 2301.66 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 129.7 MB in the beginning and 123.7 MB in the end (delta: 6.0 MB). Peak memory consumption was 81.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:58:08,465 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 408.03 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 117.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 46.18 ms. Allocated memory is still 151.0 MB. Free memory was 117.7 MB in the beginning and 116.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 609.62 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 130.2 MB in the end (delta: -14.0 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2301.66 ms. Allocated memory was 151.0 MB in the beginning and 184.5 MB in the end (delta: 33.6 MB). Free memory was 129.7 MB in the beginning and 123.7 MB in the end (delta: 6.0 MB). Peak memory consumption was 81.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 26]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 18]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 90 SDtfs, 82 SDslu, 58 SDs, 0 SdLazy, 108 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 55 LocationsWithAnnotation, 71 PreInvPairs, 83 NumberOfFragments, 126 HoareAnnotationTreeSize, 71 FomulaSimplifications, 82 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 55 FomulaSimplificationsInter, 1084 FormulaSimplificationTreeSizeReductionInter, 0.5s 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...