/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/recursive/recHanoi02-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:26:16,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:26:16,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:26:16,037 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 20:26:16,064 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:26:16,066 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:26:16,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:26:16,070 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:26:16,073 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:26:16,074 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:26:16,081 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:26:16,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:26:16,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:26:16,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:26:16,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:26:16,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:26:16,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:26:16,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:26:16,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:26:16,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:26:16,118 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:26:16,140 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:26:16,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:26:16,145 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:26:16,146 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:26:16,146 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:26:16,146 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:26:16,146 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:26:16,146 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:26:16,147 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:26:16,147 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:26:16,148 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:26:16,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:26:16,148 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:26:16,148 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:26:16,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:26:16,149 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:26:16,149 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:26:16,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:26:16,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:26:16,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:26:16,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:26:16,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:26:16,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:26:16,559 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:26:16,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:26:16,608 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:26:16,610 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:26:16,610 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:26:16,612 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi02-2.c [2020-10-23 20:26:16,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07abbe1ab/91f0b7e2bc5c4fc2ac7154d50034df7a/FLAG109221ee3 [2020-10-23 20:26:17,425 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:26:17,426 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/recHanoi02-2.c [2020-10-23 20:26:17,433 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07abbe1ab/91f0b7e2bc5c4fc2ac7154d50034df7a/FLAG109221ee3 [2020-10-23 20:26:17,776 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07abbe1ab/91f0b7e2bc5c4fc2ac7154d50034df7a [2020-10-23 20:26:17,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:26:17,788 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:26:17,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:26:17,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:26:17,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:26:17,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:26:17" (1/1) ... [2020-10-23 20:26:17,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45b8eed0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:17, skipping insertion in model container [2020-10-23 20:26:17,802 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:26:17" (1/1) ... [2020-10-23 20:26:17,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:26:17,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:26:17,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:26:17,994 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:26:18,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:26:18,028 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:26:18,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:18 WrapperNode [2020-10-23 20:26:18,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:26:18,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:26:18,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:26:18,031 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:26:18,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:18" (1/1) ... [2020-10-23 20:26:18,045 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:18" (1/1) ... [2020-10-23 20:26:18,052 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:18" (1/1) ... [2020-10-23 20:26:18,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:18" (1/1) ... [2020-10-23 20:26:18,059 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:18" (1/1) ... [2020-10-23 20:26:18,061 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:18" (1/1) ... [2020-10-23 20:26:18,062 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:18" (1/1) ... [2020-10-23 20:26:18,064 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:26:18,065 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:26:18,065 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:26:18,065 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:26:18,066 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:18" (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 [2020-10-23 20:26:18,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:26:18,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:26:18,142 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:26:18,142 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-10-23 20:26:18,142 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:26:18,143 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:26:18,143 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:26:18,143 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:26:18,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:26:18,143 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:26:18,143 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-10-23 20:26:18,144 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:26:18,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:26:18,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:26:18,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:26:18,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:26:18,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:26:18,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:26:18,421 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:26:18,422 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 20:26:18,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:26:18 BoogieIcfgContainer [2020-10-23 20:26:18,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:26:18,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:26:18,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:26:18,443 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:26:18,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:26:17" (1/3) ... [2020-10-23 20:26:18,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f742baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:26:18, skipping insertion in model container [2020-10-23 20:26:18,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:18" (2/3) ... [2020-10-23 20:26:18,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f742baf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:26:18, skipping insertion in model container [2020-10-23 20:26:18,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:26:18" (3/3) ... [2020-10-23 20:26:18,454 INFO L111 eAbstractionObserver]: Analyzing ICFG recHanoi02-2.c [2020-10-23 20:26:18,484 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:26:18,492 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:26:18,532 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:26:18,599 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:26:18,599 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:26:18,599 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:26:18,599 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:26:18,600 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:26:18,600 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:26:18,603 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:26:18,603 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:26:18,649 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-10-23 20:26:18,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-23 20:26:18,660 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:18,661 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] [2020-10-23 20:26:18,661 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:18,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:18,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1519440261, now seen corresponding path program 1 times [2020-10-23 20:26:18,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:18,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [148694421] [2020-10-23 20:26:18,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:18,770 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:19,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:19,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:19,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-23 20:26:19,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:19,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:26:19,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [148694421] [2020-10-23 20:26:19,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:19,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:26:19,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325835926] [2020-10-23 20:26:19,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:26:19,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:19,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:26:19,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:26:19,163 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 6 states. [2020-10-23 20:26:19,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:19,664 INFO L93 Difference]: Finished difference Result 58 states and 63 transitions. [2020-10-23 20:26:19,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:26:19,666 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-10-23 20:26:19,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:19,677 INFO L225 Difference]: With dead ends: 58 [2020-10-23 20:26:19,677 INFO L226 Difference]: Without dead ends: 35 [2020-10-23 20:26:19,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:26:19,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-23 20:26:19,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-23 20:26:19,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-23 20:26:19,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-10-23 20:26:19,739 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 28 [2020-10-23 20:26:19,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:19,740 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-10-23 20:26:19,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:26:19,740 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-10-23 20:26:19,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-23 20:26:19,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:19,743 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1] [2020-10-23 20:26:19,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:26:19,743 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:19,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:19,745 INFO L82 PathProgramCache]: Analyzing trace with hash -799218257, now seen corresponding path program 1 times [2020-10-23 20:26:19,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:19,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562472787] [2020-10-23 20:26:19,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:19,749 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:19,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:19,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:19,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-23 20:26:19,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:19,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:26:19,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:19,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-23 20:26:19,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562472787] [2020-10-23 20:26:19,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:19,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 20:26:19,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900799118] [2020-10-23 20:26:19,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 20:26:19,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:19,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 20:26:19,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:26:19,919 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 8 states. [2020-10-23 20:26:20,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:20,375 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-10-23 20:26:20,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 20:26:20,376 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-23 20:26:20,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:20,379 INFO L225 Difference]: With dead ends: 47 [2020-10-23 20:26:20,379 INFO L226 Difference]: Without dead ends: 40 [2020-10-23 20:26:20,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-10-23 20:26:20,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-23 20:26:20,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-23 20:26:20,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-23 20:26:20,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-10-23 20:26:20,410 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 36 [2020-10-23 20:26:20,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:20,412 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-10-23 20:26:20,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 20:26:20,413 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-10-23 20:26:20,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-23 20:26:20,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:20,417 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 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, 1] [2020-10-23 20:26:20,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:26:20,418 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:20,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:20,419 INFO L82 PathProgramCache]: Analyzing trace with hash 717569989, now seen corresponding path program 2 times [2020-10-23 20:26:20,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:20,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125602558] [2020-10-23 20:26:20,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:20,423 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:20,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:20,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:20,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-23 20:26:20,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:20,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:26:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:20,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:26:20,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:20,636 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-23 20:26:20,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125602558] [2020-10-23 20:26:20,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:20,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 20:26:20,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727821116] [2020-10-23 20:26:20,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 20:26:20,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:20,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 20:26:20,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:26:20,640 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 10 states. [2020-10-23 20:26:21,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:21,318 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-10-23 20:26:21,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-23 20:26:21,319 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-10-23 20:26:21,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:21,320 INFO L225 Difference]: With dead ends: 40 [2020-10-23 20:26:21,320 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 20:26:21,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2020-10-23 20:26:21,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 20:26:21,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 20:26:21,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 20:26:21,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 20:26:21,322 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 44 [2020-10-23 20:26:21,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:21,323 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 20:26:21,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 20:26:21,323 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 20:26:21,323 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 20:26:21,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:26:21,326 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 20:26:22,162 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-10-23 20:26:22,163 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 20:26:22,163 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-10-23 20:26:22,163 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-10-23 20:26:22,163 INFO L277 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-10-23 20:26:22,163 INFO L277 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-10-23 20:26:22,163 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 20:26:22,164 INFO L277 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-10-23 20:26:22,164 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-23 20:26:22,164 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-10-23 20:26:22,164 INFO L270 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|)) [2020-10-23 20:26:22,164 INFO L277 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-10-23 20:26:22,165 INFO L277 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-10-23 20:26:22,165 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-23 20:26:22,165 INFO L270 CegarLoopResult]: At program point hanoiEXIT(lines 20 25) the Hoare annotation is: (or (= |hanoi_#res| 1) (<= 3 |hanoi_#res|)) [2020-10-23 20:26:22,165 INFO L277 CegarLoopResult]: At program point hanoiENTRY(lines 20 25) the Hoare annotation is: true [2020-10-23 20:26:22,165 INFO L270 CegarLoopResult]: At program point hanoiFINAL(lines 20 25) the Hoare annotation is: (or (= |hanoi_#res| 1) (<= 3 |hanoi_#res|)) [2020-10-23 20:26:22,165 INFO L277 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: true [2020-10-23 20:26:22,166 INFO L270 CegarLoopResult]: At program point L24-1(line 24) the Hoare annotation is: (or (<= 3 |hanoi_#t~ret7|) (= |hanoi_#t~ret7| 1)) [2020-10-23 20:26:22,166 INFO L277 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-10-23 20:26:22,166 INFO L270 CegarLoopResult]: At program point L24-2(line 24) the Hoare annotation is: (or (<= 3 |hanoi_#t~ret7|) (= |hanoi_#t~ret7| 1)) [2020-10-23 20:26:22,166 INFO L277 CegarLoopResult]: At program point L21(lines 21 23) the Hoare annotation is: true [2020-10-23 20:26:22,166 INFO L270 CegarLoopResult]: At program point L24-3(line 24) the Hoare annotation is: (or (and (= |hanoi_#t~ret7| 1) (<= 3 |hanoi_#res|)) (and (<= 3 |hanoi_#t~ret7|) (<= 7 |hanoi_#res|))) [2020-10-23 20:26:22,166 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-23 20:26:22,167 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 20:26:22,167 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 20:26:22,167 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-23 20:26:22,167 INFO L277 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: true [2020-10-23 20:26:22,167 INFO L270 CegarLoopResult]: At program point L33-1(line 33) the Hoare annotation is: (or (<= 3 |main_#t~ret9|) (= |main_#t~ret9| 1)) [2020-10-23 20:26:22,167 INFO L277 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: true [2020-10-23 20:26:22,168 INFO L270 CegarLoopResult]: At program point L33-2(line 33) the Hoare annotation is: (or (<= 3 |main_#t~ret9|) (= |main_#t~ret9| 1)) [2020-10-23 20:26:22,168 INFO L277 CegarLoopResult]: At program point L30(lines 30 32) the Hoare annotation is: true [2020-10-23 20:26:22,168 INFO L270 CegarLoopResult]: At program point L33-3(line 33) the Hoare annotation is: (or (and (<= 3 main_~result~0) (<= 3 |main_#t~ret9|)) (and (= main_~result~0 1) (= |main_#t~ret9| 1))) [2020-10-23 20:26:22,168 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 28 39) the Hoare annotation is: true [2020-10-23 20:26:22,168 INFO L277 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: true [2020-10-23 20:26:22,168 INFO L277 CegarLoopResult]: At program point L29-1(line 29) the Hoare annotation is: true [2020-10-23 20:26:22,169 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 28 39) the Hoare annotation is: true [2020-10-23 20:26:22,169 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 28 39) the Hoare annotation is: true [2020-10-23 20:26:22,169 INFO L270 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: false [2020-10-23 20:26:22,169 INFO L270 CegarLoopResult]: At program point L37-1(line 37) the Hoare annotation is: false [2020-10-23 20:26:22,169 INFO L277 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: true [2020-10-23 20:26:22,169 INFO L270 CegarLoopResult]: At program point L34(lines 34 38) the Hoare annotation is: (or (= main_~result~0 1) (<= 3 main_~result~0)) [2020-10-23 20:26:22,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:26:22 BoogieIcfgContainer [2020-10-23 20:26:22,186 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:26:22,189 INFO L168 Benchmark]: Toolchain (without parser) took 4404.75 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 139.7 MB in the beginning and 137.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 106.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:26:22,190 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 162.5 MB. Free memory is still 135.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:26:22,191 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.06 ms. Allocated memory is still 162.5 MB. Free memory was 139.1 MB in the beginning and 130.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:26:22,192 INFO L168 Benchmark]: Boogie Preprocessor took 33.67 ms. Allocated memory is still 162.5 MB. Free memory was 130.0 MB in the beginning and 128.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:26:22,192 INFO L168 Benchmark]: RCFGBuilder took 362.65 ms. Allocated memory is still 162.5 MB. Free memory was 128.6 MB in the beginning and 115.2 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:26:22,193 INFO L168 Benchmark]: TraceAbstraction took 3753.57 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 114.6 MB in the beginning and 137.2 MB in the end (delta: -22.6 MB). Peak memory consumption was 81.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:26:22,200 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 162.5 MB. Free memory is still 135.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 237.06 ms. Allocated memory is still 162.5 MB. Free memory was 139.1 MB in the beginning and 130.2 MB in the end (delta: 8.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.67 ms. Allocated memory is still 162.5 MB. Free memory was 130.0 MB in the beginning and 128.8 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 362.65 ms. Allocated memory is still 162.5 MB. Free memory was 128.6 MB in the beginning and 115.2 MB in the end (delta: 13.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3753.57 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 114.6 MB in the beginning and 137.2 MB in the end (delta: -22.6 MB). Peak memory consumption was 81.2 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 - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 20]: Procedure Contract for hanoi Derived contract for procedure hanoi: \result == 1 || 3 <= \result - ProcedureContractResult [Line: 28]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 95 SDtfs, 81 SDslu, 237 SDs, 0 SdLazy, 364 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 42 LocationsWithAnnotation, 59 PreInvPairs, 88 NumberOfFragments, 142 HoareAnnotationTreeSize, 59 FomulaSimplifications, 105 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 42 FomulaSimplificationsInter, 1151 FormulaSimplificationTreeSizeReductionInter, 0.6s 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...