/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_b3_o2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:08:30,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:08:30,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:08:30,707 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:08:30,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:08:30,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:08:30,709 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:08:30,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:08:30,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:08:30,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:08:30,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:08:30,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:08:30,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:08:30,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:08:30,718 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:08:30,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:08:30,720 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:08:30,721 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:08:30,723 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:08:30,725 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:08:30,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:08:30,727 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:08:30,729 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:08:30,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:08:30,732 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:08:30,740 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:08:30,741 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:08:30,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:08:30,742 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:08:30,751 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:08:30,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:08:30,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:08:30,753 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:08:30,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:08:30,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:08:30,754 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:08:30,754 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:08:30,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:08:30,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:08:30,754 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:08:30,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:08:30,755 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:08:30,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:08:30,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:08:30,755 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:08:30,755 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:08:30,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:08:30,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:08:30,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:08:30,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:08:30,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:08:30,757 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:08:31,030 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:08:31,046 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:08:31,049 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:08:31,051 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:08:31,051 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:08:31,052 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b3_o2-2.c [2020-07-07 13:08:31,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8f06d174/23121a37a6c84c1f90abb09703f03e28/FLAGf2d656134 [2020-07-07 13:08:31,550 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:08:31,550 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_b3_o2-2.c [2020-07-07 13:08:31,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8f06d174/23121a37a6c84c1f90abb09703f03e28/FLAGf2d656134 [2020-07-07 13:08:31,946 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8f06d174/23121a37a6c84c1f90abb09703f03e28 [2020-07-07 13:08:31,955 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:08:31,957 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:08:31,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:08:31,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:08:31,965 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:08:31,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:08:31" (1/1) ... [2020-07-07 13:08:31,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43c2d01c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:08:31, skipping insertion in model container [2020-07-07 13:08:31,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:08:31" (1/1) ... [2020-07-07 13:08:31,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:08:31,999 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:08:32,169 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:08:32,174 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:08:32,190 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:08:32,204 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:08:32,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:08:32 WrapperNode [2020-07-07 13:08:32,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:08:32,205 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:08:32,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:08:32,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:08:32,220 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:08:32" (1/1) ... [2020-07-07 13:08:32,220 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:08:32" (1/1) ... [2020-07-07 13:08:32,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:08:32" (1/1) ... [2020-07-07 13:08:32,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:08:32" (1/1) ... [2020-07-07 13:08:32,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:08:32" (1/1) ... [2020-07-07 13:08:32,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:08:32" (1/1) ... [2020-07-07 13:08:32,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:08:32" (1/1) ... [2020-07-07 13:08:32,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:08:32,236 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:08:32,236 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:08:32,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:08:32,237 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:08:32" (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 [2020-07-07 13:08:32,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:08:32,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:08:32,414 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-07-07 13:08:32,414 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:08:32,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:08:32,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:08:32,415 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-07-07 13:08:32,415 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:08:32,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:08:32,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:08:32,715 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:08:32,715 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 13:08:32,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:08:32 BoogieIcfgContainer [2020-07-07 13:08:32,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:08:32,721 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:08:32,721 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:08:32,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:08:32,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:08:31" (1/3) ... [2020-07-07 13:08:32,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4241d098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:08:32, skipping insertion in model container [2020-07-07 13:08:32,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:08:32" (2/3) ... [2020-07-07 13:08:32,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4241d098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:08:32, skipping insertion in model container [2020-07-07 13:08:32,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:08:32" (3/3) ... [2020-07-07 13:08:32,728 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b3_o2-2.c [2020-07-07 13:08:32,737 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:08:32,744 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:08:32,758 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:08:32,780 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:08:32,780 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:08:32,780 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:08:32,780 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:08:32,780 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:08:32,781 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:08:32,781 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:08:32,781 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:08:32,796 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-07-07 13:08:32,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-07 13:08:32,806 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:08:32,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:08:32,807 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:08:32,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:08:32,813 INFO L82 PathProgramCache]: Analyzing trace with hash 856871792, now seen corresponding path program 1 times [2020-07-07 13:08:32,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:08:32,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009295473] [2020-07-07 13:08:32,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:08:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:08:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:08:33,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:08:33,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:08:33,042 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:08:33,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009295473] [2020-07-07 13:08:33,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:08:33,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:08:33,046 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423423459] [2020-07-07 13:08:33,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:08:33,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:08:33,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:08:33,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:08:33,064 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2020-07-07 13:08:33,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:08:33,151 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-07-07 13:08:33,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:08:33,153 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-07 13:08:33,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:08:33,163 INFO L225 Difference]: With dead ends: 44 [2020-07-07 13:08:33,163 INFO L226 Difference]: Without dead ends: 28 [2020-07-07 13:08:33,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:08:33,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-07 13:08:33,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-07-07 13:08:33,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-07 13:08:33,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-07-07 13:08:33,211 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 18 [2020-07-07 13:08:33,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:08:33,212 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-07-07 13:08:33,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:08:33,213 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-07-07 13:08:33,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-07 13:08:33,215 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:08:33,215 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:08:33,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:08:33,216 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:08:33,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:08:33,217 INFO L82 PathProgramCache]: Analyzing trace with hash 1774609951, now seen corresponding path program 1 times [2020-07-07 13:08:33,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:08:33,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449953264] [2020-07-07 13:08:33,218 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Garbage collection #1: 13 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 13 to 23 Garbage collection #2: 23 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 23 to 43 Garbage collection #3: 43 nodes / 0 free / 0.001s / 0.001s total Resizing node table from 43 to 83 [2020-07-07 13:08:33,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:08:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:08:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:08:33,480 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-07 13:08:33,537 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:08:33,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449953264] [2020-07-07 13:08:33,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:08:33,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 13:08:33,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137874786] [2020-07-07 13:08:33,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 13:08:33,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:08:33,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 13:08:33,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-07 13:08:33,541 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 9 states. [2020-07-07 13:08:33,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:08:33,638 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2020-07-07 13:08:33,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 13:08:33,639 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-07-07 13:08:33,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:08:33,641 INFO L225 Difference]: With dead ends: 55 [2020-07-07 13:08:33,641 INFO L226 Difference]: Without dead ends: 37 [2020-07-07 13:08:33,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-07-07 13:08:33,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-07 13:08:33,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34. [2020-07-07 13:08:33,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-07-07 13:08:33,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-07-07 13:08:33,655 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 28 [2020-07-07 13:08:33,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:08:33,655 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-07-07 13:08:33,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 13:08:33,656 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-07-07 13:08:33,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-07 13:08:33,657 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:08:33,657 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:08:33,658 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:08:33,658 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:08:33,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:08:33,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1645321695, now seen corresponding path program 1 times [2020-07-07 13:08:33,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:08:33,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [544758175] [2020-07-07 13:08:33,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Garbage collection #1: 11 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 11 to 19 Garbage collection #2: 19 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 19 to 37 Garbage collection #3: 37 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 37 to 73 [2020-07-07 13:08:33,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:08:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:08:33,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:08:33,764 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-07 13:08:33,854 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:08:33,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [544758175] [2020-07-07 13:08:33,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:08:33,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 13:08:33,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119554659] [2020-07-07 13:08:33,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 13:08:33,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:08:33,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 13:08:33,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-07-07 13:08:33,857 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 10 states. [2020-07-07 13:08:33,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:08:33,932 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2020-07-07 13:08:33,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 13:08:33,933 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 28 [2020-07-07 13:08:33,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:08:33,935 INFO L225 Difference]: With dead ends: 43 [2020-07-07 13:08:33,935 INFO L226 Difference]: Without dead ends: 37 [2020-07-07 13:08:33,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-07-07 13:08:33,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-07-07 13:08:33,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-07-07 13:08:33,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-07 13:08:33,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-07-07 13:08:33,945 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 28 [2020-07-07 13:08:33,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:08:33,946 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-07-07 13:08:33,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 13:08:33,946 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-07-07 13:08:33,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-07 13:08:33,947 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:08:33,948 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:08:33,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:08:33,948 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:08:33,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:08:33,949 INFO L82 PathProgramCache]: Analyzing trace with hash 41013968, now seen corresponding path program 2 times [2020-07-07 13:08:33,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:08:33,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099068592] [2020-07-07 13:08:33,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Garbage collection #1: 11 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 11 to 19 Garbage collection #2: 19 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 19 to 37 Garbage collection #3: 37 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 37 to 73 [2020-07-07 13:08:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:08:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:08:34,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:08:34,117 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-07 13:08:34,268 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:08:34,269 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099068592] [2020-07-07 13:08:34,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:08:34,269 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-07 13:08:34,270 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636264844] [2020-07-07 13:08:34,270 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-07 13:08:34,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:08:34,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-07 13:08:34,271 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-07-07 13:08:34,271 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 14 states. [2020-07-07 13:08:34,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:08:34,338 INFO L93 Difference]: Finished difference Result 43 states and 46 transitions. [2020-07-07 13:08:34,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-07 13:08:34,338 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-07-07 13:08:34,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:08:34,339 INFO L225 Difference]: With dead ends: 43 [2020-07-07 13:08:34,339 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 13:08:34,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-07-07 13:08:34,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 13:08:34,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 13:08:34,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 13:08:34,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 13:08:34,342 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2020-07-07 13:08:34,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:08:34,342 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 13:08:34,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-07 13:08:34,342 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 13:08:34,342 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 13:08:34,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:08:34,345 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 13:08:34,558 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-07 13:08:34,558 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-07 13:08:34,558 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-07 13:08:34,559 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 13:08:34,559 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 13:08:34,559 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-07 13:08:34,559 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) the Hoare annotation is: false [2020-07-07 13:08:34,559 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2020-07-07 13:08:34,560 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 11 17) the Hoare annotation is: true [2020-07-07 13:08:34,560 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: false [2020-07-07 13:08:34,560 INFO L264 CegarLoopResult]: At program point L14(lines 14 16) the Hoare annotation is: (or (<= main_~result~0 1) (<= 3 main_~result~0)) [2020-07-07 13:08:34,560 INFO L271 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: true [2020-07-07 13:08:34,561 INFO L271 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-07-07 13:08:34,561 INFO L264 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: (or (<= |main_#t~ret2| 1) (<= 3 |main_#t~ret2|)) [2020-07-07 13:08:34,562 INFO L271 CegarLoopResult]: At program point L14-2(lines 11 17) the Hoare annotation is: true [2020-07-07 13:08:34,562 INFO L271 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-07-07 13:08:34,562 INFO L264 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (or (<= |main_#t~ret2| 1) (<= 3 |main_#t~ret2|)) [2020-07-07 13:08:34,562 INFO L264 CegarLoopResult]: At program point L13-3(line 13) the Hoare annotation is: (or (and (<= main_~result~0 1) (<= |main_#t~ret2| 1)) (and (<= 3 |main_#t~ret2|) (<= 3 main_~result~0))) [2020-07-07 13:08:34,562 INFO L264 CegarLoopResult]: At program point idFINAL(lines 4 9) the Hoare annotation is: (let ((.cse0 (= id_~ret~0 |id_#res|))) (or (and .cse0 (= 1 id_~ret~0)) (and .cse0 (= 2 id_~ret~0)) (= 0 |id_#res|))) [2020-07-07 13:08:34,563 INFO L264 CegarLoopResult]: At program point idEXIT(lines 4 9) the Hoare annotation is: (or (and (= id_~ret~0 |id_#res|) (= 1 id_~ret~0)) (= 0 |id_#res|)) [2020-07-07 13:08:34,563 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2020-07-07 13:08:34,564 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (or (= 1 id_~ret~0) (= 2 id_~ret~0)) [2020-07-07 13:08:34,564 INFO L264 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (or (= 1 id_~ret~0) (= 2 id_~ret~0)) [2020-07-07 13:08:34,564 INFO L271 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: true [2020-07-07 13:08:34,564 INFO L264 CegarLoopResult]: At program point L7-1(line 7) the Hoare annotation is: false [2020-07-07 13:08:34,564 INFO L271 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: true [2020-07-07 13:08:34,565 INFO L264 CegarLoopResult]: At program point L6-1(line 6) the Hoare annotation is: (or (= 0 |id_#t~ret0|) (and (= 1 id_~ret~0) (= |id_#t~ret0| id_~ret~0))) [2020-07-07 13:08:34,565 INFO L271 CegarLoopResult]: At program point L5-1(line 5) the Hoare annotation is: true [2020-07-07 13:08:34,565 INFO L264 CegarLoopResult]: At program point L6-2(line 6) the Hoare annotation is: (or (= 0 |id_#t~ret0|) (and (= 1 id_~ret~0) (= |id_#t~ret0| id_~ret~0))) [2020-07-07 13:08:34,565 INFO L264 CegarLoopResult]: At program point L6-3(line 6) the Hoare annotation is: (let ((.cse0 (= id_~ret~0 (+ |id_#t~ret0| 1)))) (or (and (= 0 |id_#t~ret0|) .cse0) (and (= 1 |id_#t~ret0|) .cse0))) [2020-07-07 13:08:34,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:08:34 BoogieIcfgContainer [2020-07-07 13:08:34,586 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:08:34,589 INFO L168 Benchmark]: Toolchain (without parser) took 2630.83 ms. Allocated memory was 145.8 MB in the beginning and 235.9 MB in the end (delta: 90.2 MB). Free memory was 104.2 MB in the beginning and 123.3 MB in the end (delta: -19.2 MB). Peak memory consumption was 71.0 MB. Max. memory is 7.1 GB. [2020-07-07 13:08:34,591 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 145.8 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 13:08:34,593 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.44 ms. Allocated memory is still 145.8 MB. Free memory was 103.9 MB in the beginning and 94.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:08:34,595 INFO L168 Benchmark]: Boogie Preprocessor took 29.62 ms. Allocated memory is still 145.8 MB. Free memory was 94.6 MB in the beginning and 93.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:08:34,600 INFO L168 Benchmark]: RCFGBuilder took 483.97 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 93.3 MB in the beginning and 170.0 MB in the end (delta: -76.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-07 13:08:34,601 INFO L168 Benchmark]: TraceAbstraction took 1865.44 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 169.3 MB in the beginning and 123.3 MB in the end (delta: 46.0 MB). Peak memory consumption was 79.0 MB. Max. memory is 7.1 GB. [2020-07-07 13:08:34,612 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 145.8 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 246.44 ms. Allocated memory is still 145.8 MB. Free memory was 103.9 MB in the beginning and 94.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.62 ms. Allocated memory is still 145.8 MB. Free memory was 94.6 MB in the beginning and 93.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 483.97 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 93.3 MB in the beginning and 170.0 MB in the end (delta: -76.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1865.44 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 169.3 MB in the beginning and 123.3 MB in the end (delta: 46.0 MB). Peak memory consumption was 79.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 4]: Procedure Contract for id Derived contract for procedure id: (ret == \result && 1 == ret) || 0 == \result - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 103 SDtfs, 24 SDslu, 518 SDs, 0 SdLazy, 195 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 35 SyntacticMatches, 12 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 30 LocationsWithAnnotation, 42 PreInvPairs, 95 NumberOfFragments, 139 HoareAnnotationTreeSize, 42 FomulaSimplifications, 58 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 30 FomulaSimplificationsInter, 53 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...