/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/recursive/recHanoi03-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 19:15:27,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 19:15:27,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 19:15:27,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 19:15:27,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 19:15:27,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 19:15:27,263 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 19:15:27,268 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 19:15:27,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 19:15:27,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 19:15:27,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 19:15:27,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 19:15:27,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 19:15:27,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 19:15:27,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 19:15:27,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 19:15:27,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 19:15:27,303 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 19:15:27,326 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 19:15:27,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 19:15:27,333 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 19:15:27,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 19:15:27,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 19:15:27,341 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 19:15:27,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 19:15:27,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 19:15:27,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 19:15:27,363 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 19:15:27,364 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 19:15:27,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 19:15:27,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 19:15:27,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 19:15:27,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 19:15:27,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 19:15:27,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 19:15:27,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 19:15:27,375 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 19:15:27,429 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 19:15:27,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 19:15:27,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 19:15:27,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 19:15:27,435 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 19:15:27,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 19:15:27,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 19:15:27,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 19:15:27,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 19:15:27,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 19:15:27,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 19:15:27,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 19:15:27,438 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 19:15:27,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 19:15:27,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 19:15:27,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 19:15:27,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 19:15:27,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 19:15:27,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 19:15:27,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 19:15:27,440 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 19:15:27,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 19:15:27,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 19:15:27,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 19:15:27,441 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 19:15:27,441 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 19:15:27,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 19:15:27,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 19:15:27,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 19:15:27,973 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 19:15:27,974 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 19:15:27,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursive/recHanoi03-2.c [2021-01-06 19:15:28,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ddf01c153/2ab1afeb409e41dea1a883698b787aba/FLAG05e9e120b [2021-01-06 19:15:28,781 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 19:15:28,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/recursive/recHanoi03-2.c [2021-01-06 19:15:28,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ddf01c153/2ab1afeb409e41dea1a883698b787aba/FLAG05e9e120b [2021-01-06 19:15:29,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ddf01c153/2ab1afeb409e41dea1a883698b787aba [2021-01-06 19:15:29,154 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 19:15:29,157 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 19:15:29,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 19:15:29,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 19:15:29,163 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 19:15:29,164 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:15:29" (1/1) ... [2021-01-06 19:15:29,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4db44b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:29, skipping insertion in model container [2021-01-06 19:15:29,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 07:15:29" (1/1) ... [2021-01-06 19:15:29,175 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 19:15:29,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 19:15:29,347 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/recursive/recHanoi03-2.c[769,782] [2021-01-06 19:15:29,352 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:15:29,365 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 19:15:29,384 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/recursive/recHanoi03-2.c[769,782] [2021-01-06 19:15:29,385 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 19:15:29,404 INFO L208 MainTranslator]: Completed translation [2021-01-06 19:15:29,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:29 WrapperNode [2021-01-06 19:15:29,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 19:15:29,407 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 19:15:29,407 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 19:15:29,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 19:15:29,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:29" (1/1) ... [2021-01-06 19:15:29,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:29" (1/1) ... [2021-01-06 19:15:29,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 19:15:29,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 19:15:29,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 19:15:29,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 19:15:29,457 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:29" (1/1) ... [2021-01-06 19:15:29,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:29" (1/1) ... [2021-01-06 19:15:29,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:29" (1/1) ... [2021-01-06 19:15:29,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:29" (1/1) ... [2021-01-06 19:15:29,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:29" (1/1) ... [2021-01-06 19:15:29,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:29" (1/1) ... [2021-01-06 19:15:29,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:29" (1/1) ... [2021-01-06 19:15:29,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 19:15:29,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 19:15:29,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 19:15:29,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 19:15:29,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 19:15:29,575 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2021-01-06 19:15:29,576 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2021-01-06 19:15:29,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 19:15:29,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 19:15:29,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 19:15:29,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 19:15:29,864 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 19:15:29,864 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-01-06 19:15:29,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:15:29 BoogieIcfgContainer [2021-01-06 19:15:29,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 19:15:29,869 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 19:15:29,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 19:15:29,880 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 19:15:29,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 07:15:29" (1/3) ... [2021-01-06 19:15:29,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd2a6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:15:29, skipping insertion in model container [2021-01-06 19:15:29,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 07:15:29" (2/3) ... [2021-01-06 19:15:29,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd2a6c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 07:15:29, skipping insertion in model container [2021-01-06 19:15:29,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:15:29" (3/3) ... [2021-01-06 19:15:29,889 INFO L111 eAbstractionObserver]: Analyzing ICFG recHanoi03-2.c [2021-01-06 19:15:29,903 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 19:15:29,918 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 19:15:29,990 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 19:15:30,072 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 19:15:30,072 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 19:15:30,073 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 19:15:30,073 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 19:15:30,076 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 19:15:30,076 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 19:15:30,077 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 19:15:30,077 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 19:15:30,115 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2021-01-06 19:15:30,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 19:15:30,129 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:30,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:30,131 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:30,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:30,141 INFO L82 PathProgramCache]: Analyzing trace with hash -2087939196, now seen corresponding path program 1 times [2021-01-06 19:15:30,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:30,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851334372] [2021-01-06 19:15:30,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:30,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:30,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:30,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 19:15:30,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851334372] [2021-01-06 19:15:30,603 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 19:15:30,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-01-06 19:15:30,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315905946] [2021-01-06 19:15:30,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-01-06 19:15:30,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:30,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-01-06 19:15:30,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-01-06 19:15:30,635 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 6 states. [2021-01-06 19:15:30,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:30,740 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-01-06 19:15:30,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-01-06 19:15:30,742 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2021-01-06 19:15:30,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:30,752 INFO L225 Difference]: With dead ends: 29 [2021-01-06 19:15:30,752 INFO L226 Difference]: Without dead ends: 16 [2021-01-06 19:15:30,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-01-06 19:15:30,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-01-06 19:15:30,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-01-06 19:15:30,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-01-06 19:15:30,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-01-06 19:15:30,804 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 11 [2021-01-06 19:15:30,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:30,805 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-01-06 19:15:30,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-01-06 19:15:30,805 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-01-06 19:15:30,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-01-06 19:15:30,807 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:30,807 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:30,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 19:15:30,808 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:30,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:30,809 INFO L82 PathProgramCache]: Analyzing trace with hash -2053638732, now seen corresponding path program 1 times [2021-01-06 19:15:30,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:30,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598854142] [2021-01-06 19:15:30,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:30,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:30,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:30,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:30,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:30,961 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 19:15:30,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598854142] [2021-01-06 19:15:30,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151360260] [2021-01-06 19:15:30,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:31,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 11 conjunts are in the unsatisfiable core [2021-01-06 19:15:31,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:31,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-01-06 19:15:31,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:31,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-01-06 19:15:31,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567679888] [2021-01-06 19:15:31,604 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 19:15:31,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:31,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 19:15:31,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-01-06 19:15:31,612 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 14 states. [2021-01-06 19:15:31,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:31,780 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-01-06 19:15:31,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-01-06 19:15:31,781 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 17 [2021-01-06 19:15:31,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:31,782 INFO L225 Difference]: With dead ends: 23 [2021-01-06 19:15:31,783 INFO L226 Difference]: Without dead ends: 19 [2021-01-06 19:15:31,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-01-06 19:15:31,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-01-06 19:15:31,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-01-06 19:15:31,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-01-06 19:15:31,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-01-06 19:15:31,791 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 17 [2021-01-06 19:15:31,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:31,792 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-01-06 19:15:31,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 19:15:31,792 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-01-06 19:15:31,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-01-06 19:15:31,793 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:31,794 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:32,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-01-06 19:15:32,008 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:32,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:32,010 INFO L82 PathProgramCache]: Analyzing trace with hash -473461948, now seen corresponding path program 2 times [2021-01-06 19:15:32,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:32,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011091311] [2021-01-06 19:15:32,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:32,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:32,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:32,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:32,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:32,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:32,318 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 19:15:32,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011091311] [2021-01-06 19:15:32,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65378634] [2021-01-06 19:15:32,319 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:32,384 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-01-06 19:15:32,385 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:32,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 15 conjunts are in the unsatisfiable core [2021-01-06 19:15:32,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:32,710 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-01-06 19:15:32,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-01-06 19:15:32,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2021-01-06 19:15:32,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793406543] [2021-01-06 19:15:32,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-01-06 19:15:32,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:32,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-01-06 19:15:32,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-01-06 19:15:32,714 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 18 states. [2021-01-06 19:15:32,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:32,950 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-01-06 19:15:32,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 19:15:32,951 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 23 [2021-01-06 19:15:32,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:32,952 INFO L225 Difference]: With dead ends: 31 [2021-01-06 19:15:32,952 INFO L226 Difference]: Without dead ends: 25 [2021-01-06 19:15:32,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-01-06 19:15:32,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-01-06 19:15:32,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-01-06 19:15:32,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-01-06 19:15:32,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-01-06 19:15:32,960 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 23 [2021-01-06 19:15:32,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:32,961 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-01-06 19:15:32,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2021-01-06 19:15:32,961 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-01-06 19:15:32,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-01-06 19:15:32,962 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 19:15:32,963 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 19:15:33,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:33,178 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 19:15:33,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 19:15:33,180 INFO L82 PathProgramCache]: Analyzing trace with hash 456352516, now seen corresponding path program 3 times [2021-01-06 19:15:33,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 19:15:33,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422119215] [2021-01-06 19:15:33,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 19:15:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:33,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-01-06 19:15:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:33,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:33,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:33,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:33,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:33,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-01-06 19:15:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 19:15:33,474 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-01-06 19:15:33,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422119215] [2021-01-06 19:15:33,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529460882] [2021-01-06 19:15:33,475 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:33,537 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-01-06 19:15:33,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-01-06 19:15:33,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 13 conjunts are in the unsatisfiable core [2021-01-06 19:15:33,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-01-06 19:15:34,112 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-01-06 19:15:34,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-01-06 19:15:34,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 26 [2021-01-06 19:15:34,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861839346] [2021-01-06 19:15:34,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-01-06 19:15:34,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 19:15:34,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-01-06 19:15:34,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2021-01-06 19:15:34,115 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 14 states. [2021-01-06 19:15:34,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 19:15:34,160 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-01-06 19:15:34,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-01-06 19:15:34,161 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2021-01-06 19:15:34,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 19:15:34,162 INFO L225 Difference]: With dead ends: 25 [2021-01-06 19:15:34,162 INFO L226 Difference]: Without dead ends: 0 [2021-01-06 19:15:34,163 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2021-01-06 19:15:34,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-01-06 19:15:34,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-01-06 19:15:34,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-01-06 19:15:34,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-01-06 19:15:34,164 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-01-06 19:15:34,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 19:15:34,164 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-01-06 19:15:34,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-01-06 19:15:34,165 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-01-06 19:15:34,165 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-01-06 19:15:34,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-01-06 19:15:34,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-01-06 19:15:34,400 INFO L189 CegarLoopUtils]: For program point hanoiEXIT(lines 18 23) no Hoare annotation was computed. [2021-01-06 19:15:34,400 INFO L192 CegarLoopUtils]: At program point hanoiENTRY(lines 18 23) the Hoare annotation is: true [2021-01-06 19:15:34,401 INFO L189 CegarLoopUtils]: For program point hanoiFINAL(lines 18 23) no Hoare annotation was computed. [2021-01-06 19:15:34,401 INFO L185 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: (= hanoi_~n |hanoi_#in~n|) [2021-01-06 19:15:34,401 INFO L189 CegarLoopUtils]: For program point L22-1(line 22) no Hoare annotation was computed. [2021-01-06 19:15:34,401 INFO L189 CegarLoopUtils]: For program point L19(lines 19 21) no Hoare annotation was computed. [2021-01-06 19:15:34,401 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-01-06 19:15:34,401 INFO L189 CegarLoopUtils]: For program point L32(lines 32 36) no Hoare annotation was computed. [2021-01-06 19:15:34,401 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2021-01-06 19:15:34,402 INFO L185 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: (<= ULTIMATE.start_main_~n~0 31) [2021-01-06 19:15:34,402 INFO L189 CegarLoopUtils]: For program point L31-1(line 31) no Hoare annotation was computed. [2021-01-06 19:15:34,402 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-01-06 19:15:34,402 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-01-06 19:15:34,402 INFO L189 CegarLoopUtils]: For program point L28(lines 28 30) no Hoare annotation was computed. [2021-01-06 19:15:34,402 INFO L192 CegarLoopUtils]: At program point L26(lines 26 37) the Hoare annotation is: true [2021-01-06 19:15:34,402 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 35) no Hoare annotation was computed. [2021-01-06 19:15:34,402 INFO L189 CegarLoopUtils]: For program point L35(line 35) no Hoare annotation was computed. [2021-01-06 19:15:34,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 07:15:34 BoogieIcfgContainer [2021-01-06 19:15:34,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 19:15:34,413 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 19:15:34,413 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 19:15:34,413 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 19:15:34,414 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 07:15:29" (3/4) ... [2021-01-06 19:15:34,417 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-01-06 19:15:34,424 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure hanoi [2021-01-06 19:15:34,429 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-01-06 19:15:34,429 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-01-06 19:15:34,429 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 19:15:34,430 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-01-06 19:15:34,470 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/recursive/recHanoi03-2.c-witness.graphml [2021-01-06 19:15:34,470 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 19:15:34,473 INFO L168 Benchmark]: Toolchain (without parser) took 5315.07 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 126.4 MB in the beginning and 130.3 MB in the end (delta: -3.9 MB). Peak memory consumption was 34.6 MB. Max. memory is 8.0 GB. [2021-01-06 19:15:34,473 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 19:15:34,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.62 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 19:15:34,474 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.02 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 115.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 19:15:34,475 INFO L168 Benchmark]: Boogie Preprocessor took 21.90 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 114.2 MB in the end (delta: 852.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 19:15:34,476 INFO L168 Benchmark]: RCFGBuilder took 396.40 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 102.7 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-01-06 19:15:34,477 INFO L168 Benchmark]: TraceAbstraction took 4543.39 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 102.3 MB in the beginning and 132.9 MB in the end (delta: -30.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-01-06 19:15:34,477 INFO L168 Benchmark]: Witness Printer took 57.74 ms. Allocated memory is still 188.7 MB. Free memory was 132.9 MB in the beginning and 130.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 19:15:34,481 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 246.62 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 116.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 40.02 ms. Allocated memory is still 151.0 MB. Free memory was 116.5 MB in the beginning and 115.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 21.90 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 114.2 MB in the end (delta: 852.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 396.40 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 102.7 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4543.39 ms. Allocated memory was 151.0 MB in the beginning and 188.7 MB in the end (delta: 37.7 MB). Free memory was 102.3 MB in the beginning and 132.9 MB in the end (delta: -30.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Witness Printer took 57.74 ms. Allocated memory is still 188.7 MB. Free memory was 132.9 MB in the beginning and 130.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 35]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 4, TraceHistogramMax: 5, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 20 SDslu, 267 SDs, 0 SdLazy, 302 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=3, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 6 PreInvPairs, 8 NumberOfFragments, 8 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 161 NumberOfCodeBlocks, 161 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 154 ConstructedInterpolants, 0 QuantifiedInterpolants, 17580 SizeOfPredicates, 11 NumberOfNonLiveVariables, 266 ConjunctsInSsa, 39 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 96/140 InterpolantCoveringCapability, 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...