/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 0.1.25-72570d3 [2020-08-22 16:19:46,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:19:46,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:19:46,534 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:19:46,534 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:19:46,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:19:46,537 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:19:46,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:19:46,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:19:46,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:19:46,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:19:46,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:19:46,543 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:19:46,544 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:19:46,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:19:46,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:19:46,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:19:46,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:19:46,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:19:46,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:19:46,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:19:46,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:19:46,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:19:46,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:19:46,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:19:46,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:19:46,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:19:46,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:19:46,570 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 [2020-08-22 16:19:46,594 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:19:46,595 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:19:46,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:19:46,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:19:46,596 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:19:46,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:19:46,597 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:19:46,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:19:46,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:19:46,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:19:46,597 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:19:46,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:19:46,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:19:46,598 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:19:46,598 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:19:46,598 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:19:46,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:19:46,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:19:46,599 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:19:46,599 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:19:46,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:19:46,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:19:46,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:19:46,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:19:46,600 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:19:46,600 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:19:46,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:19:46,601 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:19:46,601 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:19:46,601 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:19:46,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:19:46,931 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:19:46,935 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:19:46,936 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:19:46,937 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:19:46,938 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi03-2.c [2020-08-22 16:19:47,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc0d28a86/64094b224b9b4df3bba5ca352352e7e0/FLAGbc959d04c [2020-08-22 16:19:47,444 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:19:47,445 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/recHanoi03-2.c [2020-08-22 16:19:47,451 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc0d28a86/64094b224b9b4df3bba5ca352352e7e0/FLAGbc959d04c [2020-08-22 16:19:47,879 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bc0d28a86/64094b224b9b4df3bba5ca352352e7e0 [2020-08-22 16:19:47,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:19:47,893 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:19:47,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:19:47,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:19:47,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:19:47,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:19:47" (1/1) ... [2020-08-22 16:19:47,902 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dbf90b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:19:47, skipping insertion in model container [2020-08-22 16:19:47,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:19:47" (1/1) ... [2020-08-22 16:19:47,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:19:47,931 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:19:48,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:19:48,149 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:19:48,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:19:48,174 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:19:48,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:19:48 WrapperNode [2020-08-22 16:19:48,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:19:48,176 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:19:48,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:19:48,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:19:48,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:19:48" (1/1) ... [2020-08-22 16:19:48,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:19:48" (1/1) ... [2020-08-22 16:19:48,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:19:48" (1/1) ... [2020-08-22 16:19:48,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:19:48" (1/1) ... [2020-08-22 16:19:48,277 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:19:48" (1/1) ... [2020-08-22 16:19:48,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:19:48" (1/1) ... [2020-08-22 16:19:48,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:19:48" (1/1) ... [2020-08-22 16:19:48,283 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:19:48,283 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:19:48,283 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:19:48,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:19:48,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:19:48" (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 [2020-08-22 16:19:48,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:19:48,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:19:48,342 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-08-22 16:19:48,342 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:19:48,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:19:48,342 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 16:19:48,342 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-08-22 16:19:48,342 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:19:48,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:19:48,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:19:48,535 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:19:48,535 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 16:19:48,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:19:48 BoogieIcfgContainer [2020-08-22 16:19:48,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:19:48,555 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:19:48,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:19:48,570 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:19:48,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:19:47" (1/3) ... [2020-08-22 16:19:48,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63fc522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:19:48, skipping insertion in model container [2020-08-22 16:19:48,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:19:48" (2/3) ... [2020-08-22 16:19:48,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63fc522 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:19:48, skipping insertion in model container [2020-08-22 16:19:48,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:19:48" (3/3) ... [2020-08-22 16:19:48,581 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi03-2.c [2020-08-22 16:19:48,609 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:19:48,627 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:19:48,656 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:19:48,687 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:19:48,687 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:19:48,689 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:19:48,689 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:19:48,689 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:19:48,689 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:19:48,689 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:19:48,689 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:19:48,705 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-08-22 16:19:48,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-22 16:19:48,710 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:19:48,711 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:19:48,712 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:19:48,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:19:48,719 INFO L82 PathProgramCache]: Analyzing trace with hash 913793727, now seen corresponding path program 1 times [2020-08-22 16:19:48,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:19:48,729 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80045618] [2020-08-22 16:19:48,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:19:48,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:48,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:19:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:48,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:19:48,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:48,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 16:19:48,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80045618] [2020-08-22 16:19:48,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:19:48,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:19:48,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268029343] [2020-08-22 16:19:48,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:19:48,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:19:48,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:19:48,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:19:48,980 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 6 states. [2020-08-22 16:19:49,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:19:49,115 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-08-22 16:19:49,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:19:49,117 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-08-22 16:19:49,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:19:49,128 INFO L225 Difference]: With dead ends: 33 [2020-08-22 16:19:49,128 INFO L226 Difference]: Without dead ends: 19 [2020-08-22 16:19:49,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-22 16:19:49,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-08-22 16:19:49,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-08-22 16:19:49,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-22 16:19:49,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-08-22 16:19:49,173 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2020-08-22 16:19:49,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:19:49,174 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-08-22 16:19:49,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:19:49,174 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-08-22 16:19:49,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-22 16:19:49,176 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:19:49,176 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:19:49,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:19:49,177 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:19:49,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:19:49,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1998834103, now seen corresponding path program 1 times [2020-08-22 16:19:49,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:19:49,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378218055] [2020-08-22 16:19:49,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:19:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:49,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:19:49,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:49,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:19:49,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:49,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:19:49,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:49,331 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 16:19:49,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378218055] [2020-08-22 16:19:49,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471824558] [2020-08-22 16:19:49,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:19:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:49,377 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2020-08-22 16:19:49,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:19:49,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 16:19:49,656 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:19:49,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-08-22 16:19:49,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535850420] [2020-08-22 16:19:49,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 16:19:49,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:19:49,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 16:19:49,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-08-22 16:19:49,660 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 14 states. [2020-08-22 16:19:49,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:19:49,827 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-08-22 16:19:49,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 16:19:49,827 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 20 [2020-08-22 16:19:49,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:19:49,829 INFO L225 Difference]: With dead ends: 26 [2020-08-22 16:19:49,829 INFO L226 Difference]: Without dead ends: 22 [2020-08-22 16:19:49,831 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 [2020-08-22 16:19:49,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-08-22 16:19:49,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-08-22 16:19:49,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-22 16:19:49,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-08-22 16:19:49,838 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 20 [2020-08-22 16:19:49,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:19:49,839 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-08-22 16:19:49,839 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 16:19:49,839 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-08-22 16:19:49,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 16:19:49,840 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:19:49,841 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:19:50,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-08-22 16:19:50,055 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:19:50,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:19:50,056 INFO L82 PathProgramCache]: Analyzing trace with hash 293522751, now seen corresponding path program 2 times [2020-08-22 16:19:50,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:19:50,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711127566] [2020-08-22 16:19:50,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:19:50,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:50,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:19:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:50,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:19:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:50,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:19:50,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:50,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:19:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:50,258 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-22 16:19:50,258 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711127566] [2020-08-22 16:19:50,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2119451365] [2020-08-22 16:19:50,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:19:50,289 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-08-22 16:19:50,289 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:19:50,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 15 conjunts are in the unsatisfiable core [2020-08-22 16:19:50,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:19:50,677 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-22 16:19:50,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-08-22 16:19:50,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2020-08-22 16:19:50,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865364854] [2020-08-22 16:19:50,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 16:19:50,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:19:50,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 16:19:50,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2020-08-22 16:19:50,680 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 18 states. [2020-08-22 16:19:50,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:19:50,900 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-08-22 16:19:50,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 16:19:50,901 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 26 [2020-08-22 16:19:50,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:19:50,902 INFO L225 Difference]: With dead ends: 34 [2020-08-22 16:19:50,903 INFO L226 Difference]: Without dead ends: 28 [2020-08-22 16:19:50,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2020-08-22 16:19:50,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-22 16:19:50,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-08-22 16:19:50,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-22 16:19:50,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-08-22 16:19:50,911 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 26 [2020-08-22 16:19:50,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:19:50,912 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-08-22 16:19:50,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 16:19:50,912 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-08-22 16:19:50,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 16:19:50,914 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:19:50,914 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:19:51,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:19:51,130 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:19:51,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:19:51,131 INFO L82 PathProgramCache]: Analyzing trace with hash -1152432193, now seen corresponding path program 3 times [2020-08-22 16:19:51,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:19:51,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003991990] [2020-08-22 16:19:51,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:19:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:51,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:19:51,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:51,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:19:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:51,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:19:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:51,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:19:51,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:51,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:19:51,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:51,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 16:19:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:19:51,480 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-22 16:19:51,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003991990] [2020-08-22 16:19:51,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865652185] [2020-08-22 16:19:51,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/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 [2020-08-22 16:19:51,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-08-22 16:19:51,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-08-22 16:19:51,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2020-08-22 16:19:51,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-08-22 16:19:52,163 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-22 16:19:52,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-08-22 16:19:52,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [14] total 26 [2020-08-22 16:19:52,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969257132] [2020-08-22 16:19:52,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 16:19:52,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:19:52,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 16:19:52,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=581, Unknown=0, NotChecked=0, Total=650 [2020-08-22 16:19:52,167 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 14 states. [2020-08-22 16:19:52,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:19:52,242 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-08-22 16:19:52,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-22 16:19:52,243 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-08-22 16:19:52,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:19:52,244 INFO L225 Difference]: With dead ends: 28 [2020-08-22 16:19:52,244 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 16:19:52,245 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 [2020-08-22 16:19:52,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 16:19:52,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 16:19:52,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 16:19:52,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 16:19:52,246 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2020-08-22 16:19:52,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:19:52,247 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 16:19:52,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 16:19:52,247 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 16:19:52,247 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 16:19:52,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-08-22 16:19:52,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 16:19:52,490 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 16:19:52,490 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:19:52,491 INFO L268 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2020-08-22 16:19:52,491 INFO L268 CegarLoopResult]: For program point hanoiEXIT(lines 16 21) no Hoare annotation was computed. [2020-08-22 16:19:52,491 INFO L271 CegarLoopResult]: At program point hanoiENTRY(lines 16 21) the Hoare annotation is: true [2020-08-22 16:19:52,491 INFO L268 CegarLoopResult]: For program point hanoiFINAL(lines 16 21) no Hoare annotation was computed. [2020-08-22 16:19:52,491 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (= hanoi_~n |hanoi_#in~n|) [2020-08-22 16:19:52,491 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-08-22 16:19:52,491 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 16:19:52,492 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 16:19:52,492 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 16:19:52,492 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 16:19:52,492 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-08-22 16:19:52,492 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 33) no Hoare annotation was computed. [2020-08-22 16:19:52,492 INFO L268 CegarLoopResult]: For program point L30(lines 30 34) no Hoare annotation was computed. [2020-08-22 16:19:52,493 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 24 35) the Hoare annotation is: true [2020-08-22 16:19:52,493 INFO L264 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (<= main_~n~0 31) [2020-08-22 16:19:52,493 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-08-22 16:19:52,493 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-08-22 16:19:52,493 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 24 35) no Hoare annotation was computed. [2020-08-22 16:19:52,493 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 24 35) no Hoare annotation was computed. [2020-08-22 16:19:52,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:19:52 BoogieIcfgContainer [2020-08-22 16:19:52,503 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:19:52,507 INFO L168 Benchmark]: Toolchain (without parser) took 4613.42 ms. Allocated memory was 139.5 MB in the beginning and 249.0 MB in the end (delta: 109.6 MB). Free memory was 102.4 MB in the beginning and 214.2 MB in the end (delta: -111.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 16:19:52,509 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-22 16:19:52,511 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.23 ms. Allocated memory is still 139.5 MB. Free memory was 102.0 MB in the beginning and 92.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:19:52,518 INFO L168 Benchmark]: Boogie Preprocessor took 107.38 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 92.8 MB in the beginning and 179.9 MB in the end (delta: -87.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-22 16:19:52,519 INFO L168 Benchmark]: RCFGBuilder took 257.80 ms. Allocated memory is still 201.3 MB. Free memory was 179.9 MB in the beginning and 168.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:19:52,520 INFO L168 Benchmark]: TraceAbstraction took 3948.04 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 167.1 MB in the beginning and 214.2 MB in the end (delta: -47.1 MB). Peak memory consumption was 574.4 kB. Max. memory is 7.1 GB. [2020-08-22 16:19:52,533 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 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 281.23 ms. Allocated memory is still 139.5 MB. Free memory was 102.0 MB in the beginning and 92.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 107.38 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 92.8 MB in the beginning and 179.9 MB in the end (delta: -87.1 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 257.80 ms. Allocated memory is still 201.3 MB. Free memory was 179.9 MB in the beginning and 168.0 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3948.04 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 167.1 MB in the beginning and 214.2 MB in the end (delta: -47.1 MB). Peak memory consumption was 574.4 kB. 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: 3.7s, OverallIterations: 4, TraceHistogramMax: 5, AutomataDifference: 0.6s, 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, 1.2s 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, 2.0s 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...