/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/recHanoi03-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:05:45,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:05:45,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:05:45,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:05:45,305 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:05:45,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:05:45,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:05:45,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:05:45,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:05:45,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:05:45,329 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:05:45,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:05:45,333 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:05:45,336 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:05:45,337 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:05:45,341 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:05:45,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:05:45,345 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:05:45,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:05:45,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:05:45,356 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:05:45,358 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:05:45,359 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:05:45,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:05:45,366 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:05:45,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:05:45,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:05:45,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:05:45,382 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:05:45,427 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:05:45,427 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:05:45,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:05:45,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:05:45,429 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:05:45,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:05:45,429 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:05:45,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:05:45,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:05:45,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:05:45,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:05:45,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:05:45,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:05:45,430 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:05:45,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:05:45,431 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:05:45,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:05:45,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:05:45,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:05:45,432 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:05:45,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:05:45,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:05:45,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:05:45,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:05:45,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:05:45,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:05:45,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:05:45,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:05:45,434 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:05:45,434 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:05:45,864 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:05:45,888 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:05:45,892 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:05:45,894 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:05:45,897 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:05:45,898 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi03-2.c [2020-09-04 13:05:45,979 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e65ebc80a/5ded3a1987f047a49e915a165bdc71d7/FLAGbb742bbbc [2020-09-04 13:05:46,510 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:05:46,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/recHanoi03-2.c [2020-09-04 13:05:46,520 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e65ebc80a/5ded3a1987f047a49e915a165bdc71d7/FLAGbb742bbbc [2020-09-04 13:05:46,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e65ebc80a/5ded3a1987f047a49e915a165bdc71d7 [2020-09-04 13:05:46,868 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:05:46,870 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:05:46,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:05:46,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:05:46,875 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:05:46,876 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:05:46" (1/1) ... [2020-09-04 13:05:46,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f6f5b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:05:46, skipping insertion in model container [2020-09-04 13:05:46,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:05:46" (1/1) ... [2020-09-04 13:05:46,890 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:05:46,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:05:47,109 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:05:47,115 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:05:47,134 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:05:47,149 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:05:47,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:05:47 WrapperNode [2020-09-04 13:05:47,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:05:47,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:05:47,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:05:47,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:05:47,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:05:47" (1/1) ... [2020-09-04 13:05:47,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:05:47" (1/1) ... [2020-09-04 13:05:47,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:05:47" (1/1) ... [2020-09-04 13:05:47,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:05:47" (1/1) ... [2020-09-04 13:05:47,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:05:47" (1/1) ... [2020-09-04 13:05:47,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:05:47" (1/1) ... [2020-09-04 13:05:47,258 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:05:47" (1/1) ... [2020-09-04 13:05:47,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:05:47,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:05:47,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:05:47,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:05:47,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:05:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:05:47,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:05:47,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:05:47,331 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-09-04 13:05:47,332 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:05:47,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:05:47,332 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:05:47,332 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-09-04 13:05:47,332 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:05:47,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:05:47,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:05:47,520 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:05:47,520 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 13:05:47,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:05:47 BoogieIcfgContainer [2020-09-04 13:05:47,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:05:47,526 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:05:47,526 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:05:47,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:05:47,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:05:46" (1/3) ... [2020-09-04 13:05:47,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa453e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:05:47, skipping insertion in model container [2020-09-04 13:05:47,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:05:47" (2/3) ... [2020-09-04 13:05:47,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fa453e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:05:47, skipping insertion in model container [2020-09-04 13:05:47,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:05:47" (3/3) ... [2020-09-04 13:05:47,534 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi03-2.c [2020-09-04 13:05:47,545 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:05:47,555 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:05:47,577 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:05:47,607 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:05:47,608 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:05:47,608 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:05:47,608 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:05:47,608 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:05:47,608 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:05:47,608 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:05:47,609 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:05:47,627 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-09-04 13:05:47,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-04 13:05:47,636 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:05:47,637 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:05:47,638 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:05:47,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:05:47,645 INFO L82 PathProgramCache]: Analyzing trace with hash 913793727, now seen corresponding path program 1 times [2020-09-04 13:05:47,655 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:05:47,655 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907084846] [2020-09-04 13:05:47,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:05:47,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:47,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:05:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:47,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:05:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:47,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:05:47,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907084846] [2020-09-04 13:05:47,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:05:47,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 13:05:47,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496052901] [2020-09-04 13:05:47,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 13:05:47,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:05:47,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 13:05:47,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:05:47,998 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 6 states. [2020-09-04 13:05:48,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:05:48,176 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-09-04 13:05:48,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:05:48,178 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-09-04 13:05:48,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:05:48,192 INFO L225 Difference]: With dead ends: 33 [2020-09-04 13:05:48,192 INFO L226 Difference]: Without dead ends: 19 [2020-09-04 13:05:48,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-04 13:05:48,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-09-04 13:05:48,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-09-04 13:05:48,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-09-04 13:05:48,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-09-04 13:05:48,248 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2020-09-04 13:05:48,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:05:48,249 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-09-04 13:05:48,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 13:05:48,249 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-09-04 13:05:48,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-04 13:05:48,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:05:48,252 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:05:48,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:05:48,252 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:05:48,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:05:48,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1998834103, now seen corresponding path program 1 times [2020-09-04 13:05:48,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:05:48,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212789754] [2020-09-04 13:05:48,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:05:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:48,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:05:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:48,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:05:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:48,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:05:48,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:48,431 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 13:05:48,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212789754] [2020-09-04 13:05:48,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677522936] [2020-09-04 13:05:48,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:05:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:48,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2020-09-04 13:05:48,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:05:48,768 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 13:05:48,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:05:48,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-09-04 13:05:48,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548421540] [2020-09-04 13:05:48,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 13:05:48,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:05:48,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 13:05:48,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-09-04 13:05:48,773 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 14 states. [2020-09-04 13:05:48,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:05:48,945 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-09-04 13:05:48,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 13:05:48,947 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 20 [2020-09-04 13:05:48,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:05:48,948 INFO L225 Difference]: With dead ends: 26 [2020-09-04 13:05:48,948 INFO L226 Difference]: Without dead ends: 22 [2020-09-04 13:05:48,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-09-04 13:05:48,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-04 13:05:48,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-04 13:05:48,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-04 13:05:48,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-04 13:05:48,964 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 20 [2020-09-04 13:05:48,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:05:48,966 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-04 13:05:48,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 13:05:48,967 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-04 13:05:48,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-04 13:05:48,969 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:05:48,969 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:05:49,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-09-04 13:05:49,171 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:05:49,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:05:49,171 INFO L82 PathProgramCache]: Analyzing trace with hash 293522751, now seen corresponding path program 2 times [2020-09-04 13:05:49,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:05:49,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006151592] [2020-09-04 13:05:49,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:05:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:49,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:05:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:49,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:05:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:49,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:05:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:49,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:05:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:49,389 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-04 13:05:49,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006151592] [2020-09-04 13:05:49,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51946101] [2020-09-04 13:05:49,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:05:49,419 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-09-04 13:05:49,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:05:49,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjunts are in the unsatisfiable core [2020-09-04 13:05:49,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:05:49,813 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-04 13:05:49,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-09-04 13:05:49,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2020-09-04 13:05:49,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033902630] [2020-09-04 13:05:49,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-04 13:05:49,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:05:49,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-04 13:05:49,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-09-04 13:05:49,816 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 18 states. [2020-09-04 13:05:50,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:05:50,083 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-09-04 13:05:50,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 13:05:50,085 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 26 [2020-09-04 13:05:50,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:05:50,086 INFO L225 Difference]: With dead ends: 34 [2020-09-04 13:05:50,087 INFO L226 Difference]: Without dead ends: 28 [2020-09-04 13:05:50,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2020-09-04 13:05:50,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-04 13:05:50,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-04 13:05:50,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-04 13:05:50,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-04 13:05:50,101 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 26 [2020-09-04 13:05:50,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:05:50,102 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-04 13:05:50,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-04 13:05:50,102 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-04 13:05:50,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-04 13:05:50,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:05:50,105 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:05:50,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:05:50,306 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:05:50,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:05:50,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1152432193, now seen corresponding path program 3 times [2020-09-04 13:05:50,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:05:50,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636527292] [2020-09-04 13:05:50,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:05:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:50,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:05:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:50,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-04 13:05:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:50,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:05:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:50,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:05:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:50,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:05:50,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:50,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 13:05:50,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:05:50,718 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-04 13:05:50,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636527292] [2020-09-04 13:05:50,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [104369884] [2020-09-04 13:05:50,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:05:50,753 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-09-04 13:05:50,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-09-04 13:05:50,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2020-09-04 13:05:50,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-09-04 13:05:51,507 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-04 13:05:51,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-09-04 13:05:51,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 26 [2020-09-04 13:05:51,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896681646] [2020-09-04 13:05:51,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 13:05:51,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:05:51,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 13:05:51,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2020-09-04 13:05:51,510 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 14 states. [2020-09-04 13:05:51,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:05:51,576 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-09-04 13:05:51,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 13:05:51,577 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-09-04 13:05:51,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:05:51,578 INFO L225 Difference]: With dead ends: 28 [2020-09-04 13:05:51,578 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 13:05:51,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2020-09-04 13:05:51,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 13:05:51,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 13:05:51,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 13:05:51,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 13:05:51,580 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2020-09-04 13:05:51,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:05:51,581 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 13:05:51,581 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 13:05:51,581 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 13:05:51,581 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 13:05:51,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-09-04 13:05:51,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 13:05:51,809 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 13:05:51,809 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:05:51,809 INFO L268 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2020-09-04 13:05:51,810 INFO L268 CegarLoopResult]: For program point hanoiEXIT(lines 16 21) no Hoare annotation was computed. [2020-09-04 13:05:51,810 INFO L271 CegarLoopResult]: At program point hanoiENTRY(lines 16 21) the Hoare annotation is: true [2020-09-04 13:05:51,810 INFO L268 CegarLoopResult]: For program point hanoiFINAL(lines 16 21) no Hoare annotation was computed. [2020-09-04 13:05:51,810 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (= hanoi_~n |hanoi_#in~n|) [2020-09-04 13:05:51,810 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-04 13:05:51,811 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:05:51,811 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 13:05:51,811 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 13:05:51,811 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:05:51,811 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-04 13:05:51,812 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 33) no Hoare annotation was computed. [2020-09-04 13:05:51,812 INFO L268 CegarLoopResult]: For program point L30(lines 30 34) no Hoare annotation was computed. [2020-09-04 13:05:51,812 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 24 35) the Hoare annotation is: true [2020-09-04 13:05:51,812 INFO L264 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (<= main_~n~0 31) [2020-09-04 13:05:51,812 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-09-04 13:05:51,812 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-09-04 13:05:51,813 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 24 35) no Hoare annotation was computed. [2020-09-04 13:05:51,813 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 24 35) no Hoare annotation was computed. [2020-09-04 13:05:51,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:05:51 BoogieIcfgContainer [2020-09-04 13:05:51,820 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:05:51,824 INFO L168 Benchmark]: Toolchain (without parser) took 4952.15 ms. Allocated memory was 141.0 MB in the beginning and 244.8 MB in the end (delta: 103.8 MB). Free memory was 104.2 MB in the beginning and 191.8 MB in the end (delta: -87.6 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2020-09-04 13:05:51,825 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:05:51,826 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.73 ms. Allocated memory is still 141.0 MB. Free memory was 104.0 MB in the beginning and 94.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:05:51,827 INFO L168 Benchmark]: Boogie Preprocessor took 108.68 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 94.7 MB in the beginning and 183.7 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:05:51,827 INFO L168 Benchmark]: RCFGBuilder took 265.31 ms. Allocated memory is still 204.5 MB. Free memory was 183.7 MB in the beginning and 171.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-09-04 13:05:51,828 INFO L168 Benchmark]: TraceAbstraction took 4294.28 ms. Allocated memory was 204.5 MB in the beginning and 244.8 MB in the end (delta: 40.4 MB). Free memory was 171.0 MB in the beginning and 191.8 MB in the end (delta: -20.8 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:05:51,833 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 278.73 ms. Allocated memory is still 141.0 MB. Free memory was 104.0 MB in the beginning and 94.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.68 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 94.7 MB in the beginning and 183.7 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 265.31 ms. Allocated memory is still 204.5 MB. Free memory was 183.7 MB in the beginning and 171.6 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4294.28 ms. Allocated memory was 204.5 MB in the beginning and 244.8 MB in the end (delta: 40.4 MB). Free memory was 171.0 MB in the beginning and 191.8 MB in the end (delta: -20.8 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 33]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 4, TraceHistogramMax: 5, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 68 SDtfs, 26 SDslu, 336 SDs, 0 SdLazy, 274 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 11 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 182 NumberOfCodeBlocks, 182 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 175 ConstructedInterpolants, 14 QuantifiedInterpolants, 27881 SizeOfPredicates, 11 NumberOfNonLiveVariables, 203 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...