/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -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-d623d84 [2020-07-21 00:32:35,795 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-21 00:32:35,866 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 00:32:35,890 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 00:32:35,891 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 00:32:35,893 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 00:32:35,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 00:32:35,894 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 00:32:35,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 00:32:35,894 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 00:32:35,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 00:32:35,894 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 00:32:35,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 00:32:35,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 00:32:35,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 00:32:35,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 00:32:35,896 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 00:32:35,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 00:32:35,897 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 00:32:35,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 00:32:35,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 00:32:35,897 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 00:32:35,898 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 00:32:35,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 00:32:35,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 00:32:35,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 00:32:35,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 00:32:35,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 00:32:35,899 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 00:32:35,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:32:35,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 00:32:35,899 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 00:32:35,900 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 00:32:36,258 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 00:32:36,272 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 00:32:36,276 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 00:32:36,277 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 00:32:36,278 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 00:32:36,279 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi03-2.c [2020-07-21 00:32:36,348 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17aedf598/272eb7d5ef204e5a9d954b73746516e4/FLAGc9d6ef4f0 [2020-07-21 00:32:36,790 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 00:32:36,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/recHanoi03-2.c [2020-07-21 00:32:36,797 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17aedf598/272eb7d5ef204e5a9d954b73746516e4/FLAGc9d6ef4f0 [2020-07-21 00:32:37,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17aedf598/272eb7d5ef204e5a9d954b73746516e4 [2020-07-21 00:32:37,174 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 00:32:37,176 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 00:32:37,178 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 00:32:37,178 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 00:32:37,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 00:32:37,183 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:32:37" (1/1) ... [2020-07-21 00:32:37,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4591ba51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:37, skipping insertion in model container [2020-07-21 00:32:37,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:32:37" (1/1) ... [2020-07-21 00:32:37,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 00:32:37,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 00:32:37,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 00:32:37,384 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 00:32:37,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 00:32:37,411 INFO L208 MainTranslator]: Completed translation [2020-07-21 00:32:37,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:37 WrapperNode [2020-07-21 00:32:37,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 00:32:37,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 00:32:37,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 00:32:37,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 00:32:37,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:37" (1/1) ... [2020-07-21 00:32:37,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:37" (1/1) ... [2020-07-21 00:32:37,433 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:37" (1/1) ... [2020-07-21 00:32:37,433 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:37" (1/1) ... [2020-07-21 00:32:37,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:37" (1/1) ... [2020-07-21 00:32:37,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:37" (1/1) ... [2020-07-21 00:32:37,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:37" (1/1) ... [2020-07-21 00:32:37,440 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 00:32:37,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 00:32:37,441 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 00:32:37,441 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 00:32:37,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:37" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 00:32:37,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 00:32:37,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 00:32:37,586 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-07-21 00:32:37,586 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 00:32:37,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 00:32:37,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 00:32:37,586 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-07-21 00:32:37,586 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 00:32:37,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 00:32:37,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 00:32:37,768 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 00:32:37,768 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 00:32:37,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:32:37 BoogieIcfgContainer [2020-07-21 00:32:37,772 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 00:32:37,773 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 00:32:37,773 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 00:32:37,777 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 00:32:37,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:32:37" (1/3) ... [2020-07-21 00:32:37,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1dc827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:32:37, skipping insertion in model container [2020-07-21 00:32:37,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:32:37" (2/3) ... [2020-07-21 00:32:37,779 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f1dc827 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:32:37, skipping insertion in model container [2020-07-21 00:32:37,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:32:37" (3/3) ... [2020-07-21 00:32:37,781 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi03-2.c [2020-07-21 00:32:37,791 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 00:32:37,798 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 00:32:37,812 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 00:32:37,838 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 00:32:37,838 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 00:32:37,838 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 00:32:37,838 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 00:32:37,839 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 00:32:37,839 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 00:32:37,839 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 00:32:37,839 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 00:32:37,857 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-07-21 00:32:37,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 00:32:37,863 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:32:37,864 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 00:32:37,864 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:32:37,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:32:37,870 INFO L82 PathProgramCache]: Analyzing trace with hash 913793727, now seen corresponding path program 1 times [2020-07-21 00:32:37,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:32:37,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582007472] [2020-07-21 00:32:37,878 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:32:37,966 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:32:37,966 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:32:37,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 00:32:37,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:32:38,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 00:32:38,108 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 00:32:38,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582007472] [2020-07-21 00:32:38,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 00:32:38,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 00:32:38,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386384025] [2020-07-21 00:32:38,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 00:32:38,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:32:38,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 00:32:38,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-21 00:32:38,135 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 6 states. [2020-07-21 00:32:38,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:32:38,274 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-07-21 00:32:38,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 00:32:38,278 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-07-21 00:32:38,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:32:38,295 INFO L225 Difference]: With dead ends: 33 [2020-07-21 00:32:38,295 INFO L226 Difference]: Without dead ends: 19 [2020-07-21 00:32:38,302 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-21 00:32:38,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-21 00:32:38,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-21 00:32:38,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-21 00:32:38,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-07-21 00:32:38,389 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2020-07-21 00:32:38,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:32:38,390 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-07-21 00:32:38,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 00:32:38,391 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-07-21 00:32:38,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-21 00:32:38,393 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:32:38,394 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 00:32:38,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:32:38,611 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:32:38,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:32:38,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1998834103, now seen corresponding path program 1 times [2020-07-21 00:32:38,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:32:38,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587319200] [2020-07-21 00:32:38,613 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:32:38,648 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:32:38,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:32:38,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 00:32:38,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:32:38,831 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 00:32:38,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:32:39,120 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:32:39,124 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:33:04,226 WARN L193 SmtUtils]: Spent 7.48 s on a formula simplification that was a NOOP. DAG size: 19 [2020-07-21 00:33:19,704 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 00:33:21,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 00:33:21,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587319200] [2020-07-21 00:33:21,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 00:33:21,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 15 [2020-07-21 00:33:21,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356532219] [2020-07-21 00:33:21,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-21 00:33:21,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:33:21,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-21 00:33:21,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=162, Unknown=9, NotChecked=0, Total=210 [2020-07-21 00:33:21,265 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 15 states. [2020-07-21 00:33:24,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:33:24,287 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-07-21 00:33:24,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 00:33:24,292 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 20 [2020-07-21 00:33:24,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:33:24,294 INFO L225 Difference]: With dead ends: 31 [2020-07-21 00:33:24,294 INFO L226 Difference]: Without dead ends: 25 [2020-07-21 00:33:24,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 44.8s TimeCoverageRelationStatistics Valid=76, Invalid=294, Unknown=10, NotChecked=0, Total=380 [2020-07-21 00:33:24,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-07-21 00:33:24,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-07-21 00:33:24,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-21 00:33:24,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-07-21 00:33:24,306 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 20 [2020-07-21 00:33:24,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:33:24,306 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-07-21 00:33:24,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-21 00:33:24,307 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-07-21 00:33:24,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-21 00:33:24,308 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:33:24,308 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 00:33:24,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:33:24,522 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:33:24,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:33:24,525 INFO L82 PathProgramCache]: Analyzing trace with hash -547108535, now seen corresponding path program 2 times [2020-07-21 00:33:24,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:33:24,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047988266] [2020-07-21 00:33:24,527 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:33:24,589 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:33:24,590 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:33:24,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 19 conjunts are in the unsatisfiable core [2020-07-21 00:33:24,595 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:33:27,372 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-07-21 00:33:27,373 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 00:33:28,311 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-07-21 00:33:28,441 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 42 [2020-07-21 00:33:28,558 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-07-21 00:33:28,679 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-07-21 00:33:29,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047988266] [2020-07-21 00:33:29,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 00:33:29,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-07-21 00:33:29,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463856042] [2020-07-21 00:33:29,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 00:33:29,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:33:29,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 00:33:29,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=223, Unknown=1, NotChecked=0, Total=272 [2020-07-21 00:33:29,684 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 12 states. [2020-07-21 00:33:32,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:33:32,918 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2020-07-21 00:33:32,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-21 00:33:32,922 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-07-21 00:33:32,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:33:32,924 INFO L225 Difference]: With dead ends: 32 [2020-07-21 00:33:32,924 INFO L226 Difference]: Without dead ends: 28 [2020-07-21 00:33:32,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=90, Invalid=461, Unknown=1, NotChecked=0, Total=552 [2020-07-21 00:33:32,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-21 00:33:32,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-07-21 00:33:32,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-21 00:33:32,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-07-21 00:33:32,935 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 32 [2020-07-21 00:33:32,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:33:32,935 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-07-21 00:33:32,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 00:33:32,936 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-07-21 00:33:32,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 00:33:32,937 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 00:33:32,938 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 00:33:33,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:33:33,153 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 00:33:33,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 00:33:33,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1152432193, now seen corresponding path program 3 times [2020-07-21 00:33:33,155 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 00:33:33,156 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881462830] [2020-07-21 00:33:33,157 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:33:33,207 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 00:33:33,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 00:33:33,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 00:33:33,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 00:33:48,886 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-07-21 00:33:48,887 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 00:33:48,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881462830] [2020-07-21 00:33:48,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 00:33:48,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-21 00:33:48,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137930251] [2020-07-21 00:33:48,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 00:33:48,891 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 00:33:48,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 00:33:48,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=132, Unknown=7, NotChecked=0, Total=182 [2020-07-21 00:33:48,892 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 14 states. [2020-07-21 00:34:07,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 00:34:07,721 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-07-21 00:34:07,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-21 00:34:07,725 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-07-21 00:34:07,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 00:34:07,726 INFO L225 Difference]: With dead ends: 28 [2020-07-21 00:34:07,726 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 00:34:07,728 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 15.5s TimeCoverageRelationStatistics Valid=43, Invalid=132, Unknown=7, NotChecked=0, Total=182 [2020-07-21 00:34:07,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 00:34:07,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 00:34:07,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 00:34:07,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 00:34:07,730 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2020-07-21 00:34:07,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 00:34:07,730 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 00:34:07,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 00:34:07,731 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 00:34:07,731 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 00:34:07,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 00:34:07,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 00:34:08,035 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-21 00:34:08,035 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 00:34:08,035 INFO L268 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2020-07-21 00:34:08,035 INFO L268 CegarLoopResult]: For program point hanoiEXIT(lines 16 21) no Hoare annotation was computed. [2020-07-21 00:34:08,036 INFO L271 CegarLoopResult]: At program point hanoiENTRY(lines 16 21) the Hoare annotation is: true [2020-07-21 00:34:08,036 INFO L268 CegarLoopResult]: For program point hanoiFINAL(lines 16 21) no Hoare annotation was computed. [2020-07-21 00:34:08,036 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (<= |hanoi_#in~n| hanoi_~n) [2020-07-21 00:34:08,036 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-07-21 00:34:08,036 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 00:34:08,036 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 00:34:08,036 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 00:34:08,037 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 00:34:08,037 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-07-21 00:34:08,037 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 33) no Hoare annotation was computed. [2020-07-21 00:34:08,037 INFO L268 CegarLoopResult]: For program point L30(lines 30 34) no Hoare annotation was computed. [2020-07-21 00:34:08,038 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 24 35) the Hoare annotation is: true [2020-07-21 00:34:08,038 INFO L264 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (<= main_~n~0 31) [2020-07-21 00:34:08,038 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-07-21 00:34:08,038 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-07-21 00:34:08,038 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 24 35) no Hoare annotation was computed. [2020-07-21 00:34:08,038 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 24 35) no Hoare annotation was computed. [2020-07-21 00:34:08,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:34:08 BoogieIcfgContainer [2020-07-21 00:34:08,046 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 00:34:08,049 INFO L168 Benchmark]: Toolchain (without parser) took 90873.63 ms. Allocated memory was 143.7 MB in the beginning and 251.7 MB in the end (delta: 108.0 MB). Free memory was 101.5 MB in the beginning and 205.0 MB in the end (delta: -103.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-07-21 00:34:08,051 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 143.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 00:34:08,052 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.69 ms. Allocated memory is still 143.7 MB. Free memory was 101.2 MB in the beginning and 92.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-07-21 00:34:08,053 INFO L168 Benchmark]: Boogie Preprocessor took 27.49 ms. Allocated memory is still 143.7 MB. Free memory was 91.8 MB in the beginning and 90.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2020-07-21 00:34:08,054 INFO L168 Benchmark]: RCFGBuilder took 331.31 ms. Allocated memory was 143.7 MB in the beginning and 199.8 MB in the end (delta: 56.1 MB). Free memory was 90.5 MB in the beginning and 167.5 MB in the end (delta: -77.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-21 00:34:08,055 INFO L168 Benchmark]: TraceAbstraction took 90273.77 ms. Allocated memory was 199.8 MB in the beginning and 251.7 MB in the end (delta: 51.9 MB). Free memory was 167.5 MB in the beginning and 205.0 MB in the end (delta: -37.4 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-21 00:34:08,060 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 143.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 234.69 ms. Allocated memory is still 143.7 MB. Free memory was 101.2 MB in the beginning and 92.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 27.49 ms. Allocated memory is still 143.7 MB. Free memory was 91.8 MB in the beginning and 90.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 331.31 ms. Allocated memory was 143.7 MB in the beginning and 199.8 MB in the end (delta: 56.1 MB). Free memory was 90.5 MB in the beginning and 167.5 MB in the end (delta: -77.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 90273.77 ms. Allocated memory was 199.8 MB in the beginning and 251.7 MB in the end (delta: 51.9 MB). Free memory was 167.5 MB in the beginning and 205.0 MB in the end (delta: -37.4 MB). Peak memory consumption was 14.5 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: 90.0s, OverallIterations: 4, TraceHistogramMax: 5, AutomataDifference: 25.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 21 SDslu, 381 SDs, 0 SdLazy, 311 SolverSat, 9 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 21.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 81 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 64.0s 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, 0.0s SatisfiabilityAnalysisTime, 63.5s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 119 ConstructedInterpolants, 23 QuantifiedInterpolants, 24992 SizeOfPredicates, 16 NumberOfNonLiveVariables, 252 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 70/90 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...