/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_b5_o10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:49:27,325 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:49:27,329 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:49:27,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 18:49:27,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:49:27,407 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:49:27,408 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:49:27,411 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:49:27,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:49:27,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:49:27,416 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:49:27,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:49:27,426 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:49:27,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:49:27,429 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:49:27,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:49:27,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 18:49:27,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:49:27,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:49:27,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:49:27,447 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 18:49:27,467 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:49:27,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:49:27,470 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:49:27,470 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:49:27,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:49:27,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:49:27,471 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:49:27,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:49:27,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:49:27,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:49:27,472 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:49:27,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:49:27,473 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:49:27,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:49:27,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:49:27,474 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:49:27,474 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:49:27,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:49:27,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:49:27,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:49:27,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:49:27,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:49:27,475 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:49:27,810 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:49:27,825 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:49:27,829 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:49:27,831 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:49:27,832 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:49:27,833 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c [2020-08-22 18:49:27,918 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46e762482/7b87c60a431d4eee89748bb07091214e/FLAG8130cb661 [2020-08-22 18:49:28,445 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:49:28,446 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/id_b5_o10-2.c [2020-08-22 18:49:28,453 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46e762482/7b87c60a431d4eee89748bb07091214e/FLAG8130cb661 [2020-08-22 18:49:28,829 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46e762482/7b87c60a431d4eee89748bb07091214e [2020-08-22 18:49:28,840 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:49:28,843 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:49:28,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:49:28,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:49:28,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:49:28,850 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:49:28" (1/1) ... [2020-08-22 18:49:28,853 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45aac576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:49:28, skipping insertion in model container [2020-08-22 18:49:28,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:49:28" (1/1) ... [2020-08-22 18:49:28,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:49:28,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:49:29,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:49:29,092 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:49:29,118 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:49:29,137 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:49:29,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:49:29 WrapperNode [2020-08-22 18:49:29,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:49:29,140 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:49:29,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:49:29,141 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:49:29,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:49:29" (1/1) ... [2020-08-22 18:49:29,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:49:29" (1/1) ... [2020-08-22 18:49:29,284 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:49:29" (1/1) ... [2020-08-22 18:49:29,285 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:49:29" (1/1) ... [2020-08-22 18:49:29,290 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:49:29" (1/1) ... [2020-08-22 18:49:29,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:49:29" (1/1) ... [2020-08-22 18:49:29,294 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:49:29" (1/1) ... [2020-08-22 18:49:29,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:49:29,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:49:29,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:49:29,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:49:29,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:49:29" (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 18:49:29,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:49:29,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:49:29,379 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-08-22 18:49:29,379 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:49:29,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 18:49:29,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:49:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-08-22 18:49:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:49:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:49:29,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:49:29,583 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:49:29,583 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 18:49:29,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:49:29 BoogieIcfgContainer [2020-08-22 18:49:29,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:49:29,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:49:29,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:49:29,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:49:29,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:49:28" (1/3) ... [2020-08-22 18:49:29,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34cea6a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:49:29, skipping insertion in model container [2020-08-22 18:49:29,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:49:29" (2/3) ... [2020-08-22 18:49:29,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34cea6a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:49:29, skipping insertion in model container [2020-08-22 18:49:29,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:49:29" (3/3) ... [2020-08-22 18:49:29,599 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b5_o10-2.c [2020-08-22 18:49:29,613 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:49:29,622 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:49:29,642 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:49:29,674 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:49:29,675 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:49:29,675 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:49:29,675 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:49:29,676 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:49:29,676 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:49:29,676 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:49:29,676 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:49:29,706 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-08-22 18:49:29,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-22 18:49:29,737 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:49:29,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:49:29,740 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:49:29,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:49:29,749 INFO L82 PathProgramCache]: Analyzing trace with hash 856871792, now seen corresponding path program 1 times [2020-08-22 18:49:29,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:49:29,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126922241] [2020-08-22 18:49:29,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:49:29,840 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:49:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:49:29,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:49:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:49:29,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 18:49:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:49:30,011 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 18:49:30,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126922241] [2020-08-22 18:49:30,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:49:30,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 18:49:30,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882309428] [2020-08-22 18:49:30,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 18:49:30,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:49:30,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 18:49:30,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:49:30,037 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2020-08-22 18:49:30,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:49:30,136 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-08-22 18:49:30,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 18:49:30,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-08-22 18:49:30,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:49:30,158 INFO L225 Difference]: With dead ends: 44 [2020-08-22 18:49:30,159 INFO L226 Difference]: Without dead ends: 28 [2020-08-22 18:49:30,165 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 [2020-08-22 18:49:30,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-22 18:49:30,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-08-22 18:49:30,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-22 18:49:30,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-08-22 18:49:30,215 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 18 [2020-08-22 18:49:30,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:49:30,216 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-08-22 18:49:30,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 18:49:30,216 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-08-22 18:49:30,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 18:49:30,219 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:49:30,219 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] [2020-08-22 18:49:30,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:49:30,220 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:49:30,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:49:30,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1774609951, now seen corresponding path program 1 times [2020-08-22 18:49:30,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:49:30,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541185692] [2020-08-22 18:49:30,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:49:30,440 INFO L278 leratedInterpolation]: Starting analysis with loop acceleration approximation PRECISE [2020-08-22 18:49:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:49:30,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:49:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:49:30,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 18:49:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:49:30,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 18:49:30,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541185692] [2020-08-22 18:49:30,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:49:30,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 18:49:30,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470132460] [2020-08-22 18:49:30,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 18:49:30,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:49:30,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 18:49:30,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-08-22 18:49:30,649 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 9 states. [2020-08-22 18:49:30,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:49:30,764 INFO L93 Difference]: Finished difference Result 55 states and 61 transitions. [2020-08-22 18:49:30,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 18:49:30,765 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-08-22 18:49:30,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:49:30,767 INFO L225 Difference]: With dead ends: 55 [2020-08-22 18:49:30,767 INFO L226 Difference]: Without dead ends: 37 [2020-08-22 18:49:30,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-22 18:49:30,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-22 18:49:30,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2020-08-22 18:49:30,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-22 18:49:30,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2020-08-22 18:49:30,783 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 28 [2020-08-22 18:49:30,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:49:30,784 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2020-08-22 18:49:30,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 18:49:30,785 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2020-08-22 18:49:30,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 18:49:30,787 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:49:30,787 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] [2020-08-22 18:49:30,787 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:49:30,788 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:49:30,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:49:30,788 INFO L82 PathProgramCache]: Analyzing trace with hash 41013968, now seen corresponding path program 1 times [2020-08-22 18:49:30,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:49:30,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [383164376] [2020-08-22 18:49:30,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:49:30,845 INFO L278 leratedInterpolation]: Starting analysis with loop acceleration approximation PRECISE [2020-08-22 18:49:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:49:30,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:49:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:49:30,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 18:49:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:49:31,059 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-22 18:49:31,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [383164376] [2020-08-22 18:49:31,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:49:31,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 18:49:31,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623194873] [2020-08-22 18:49:31,486 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 18:49:31,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:49:31,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 18:49:31,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-08-22 18:49:31,488 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 14 states. [2020-08-22 18:49:31,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:49:31,673 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2020-08-22 18:49:31,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 18:49:31,673 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 38 [2020-08-22 18:49:31,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:49:31,676 INFO L225 Difference]: With dead ends: 64 [2020-08-22 18:49:31,676 INFO L226 Difference]: Without dead ends: 44 [2020-08-22 18:49:31,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-08-22 18:49:31,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-22 18:49:31,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-08-22 18:49:31,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-22 18:49:31,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-08-22 18:49:31,691 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 38 [2020-08-22 18:49:31,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:49:31,691 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-08-22 18:49:31,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 18:49:31,692 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-08-22 18:49:31,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-22 18:49:31,693 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:49:31,694 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 18:49:31,694 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 18:49:31,694 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:49:31,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:49:31,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1045014785, now seen corresponding path program 2 times [2020-08-22 18:49:31,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:49:31,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836053760] [2020-08-22 18:49:31,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:49:31,737 INFO L278 leratedInterpolation]: Starting analysis with loop acceleration approximation PRECISE [2020-08-22 18:49:31,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:49:31,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:49:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:49:31,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-08-22 18:49:31,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:49:31,851 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-22 18:49:32,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836053760] [2020-08-22 18:49:32,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:49:32,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-08-22 18:49:32,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308282936] [2020-08-22 18:49:32,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-22 18:49:32,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:49:32,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-22 18:49:32,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-08-22 18:49:32,524 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 18 states. [2020-08-22 18:49:32,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:49:32,735 INFO L93 Difference]: Finished difference Result 50 states and 53 transitions. [2020-08-22 18:49:32,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 18:49:32,736 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 48 [2020-08-22 18:49:32,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:49:32,737 INFO L225 Difference]: With dead ends: 50 [2020-08-22 18:49:32,737 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 18:49:32,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2020-08-22 18:49:32,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 18:49:32,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 18:49:32,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 18:49:32,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 18:49:32,739 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2020-08-22 18:49:32,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:49:32,740 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 18:49:32,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-22 18:49:32,740 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 18:49:32,740 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 18:49:32,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 18:49:32,743 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 18:49:33,268 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 24 [2020-08-22 18:49:33,483 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 18:49:33,483 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 18:49:33,484 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 18:49:33,484 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 18:49:33,484 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 18:49:33,485 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 18:49:33,485 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) the Hoare annotation is: false [2020-08-22 18:49:33,485 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2020-08-22 18:49:33,485 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 11 17) the Hoare annotation is: true [2020-08-22 18:49:33,485 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: false [2020-08-22 18:49:33,486 INFO L264 CegarLoopResult]: At program point L14(lines 14 16) the Hoare annotation is: (not (= main_~result~0 10)) [2020-08-22 18:49:33,486 INFO L271 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: true [2020-08-22 18:49:33,486 INFO L271 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-08-22 18:49:33,486 INFO L264 CegarLoopResult]: At program point L13-1(line 13) the Hoare annotation is: (not (= |main_#t~ret2| 10)) [2020-08-22 18:49:33,486 INFO L271 CegarLoopResult]: At program point L14-2(lines 11 17) the Hoare annotation is: true [2020-08-22 18:49:33,486 INFO L271 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-08-22 18:49:33,486 INFO L264 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (not (= |main_#t~ret2| 10)) [2020-08-22 18:49:33,486 INFO L264 CegarLoopResult]: At program point L13-3(line 13) the Hoare annotation is: (and (not (= |main_#t~ret2| 10)) (not (= main_~result~0 10))) [2020-08-22 18:49:33,487 INFO L264 CegarLoopResult]: At program point idFINAL(lines 4 9) the Hoare annotation is: (let ((.cse0 (= id_~ret~0 |id_#res|))) (or (and (= id_~ret~0 2) .cse0) (= |id_#res| 0) (and (= id_~ret~0 1) .cse0) (and (or (= id_~ret~0 3) (exists ((v_id_~ret~0_13 Int)) (let ((.cse1 (+ v_id_~ret~0_13 3))) (and (<= 1 v_id_~ret~0_13) (<= id_~ret~0 .cse1) (<= .cse1 id_~ret~0) (<= v_id_~ret~0_13 1))))) .cse0))) [2020-08-22 18:49:33,487 INFO L264 CegarLoopResult]: At program point idEXIT(lines 4 9) the Hoare annotation is: (let ((.cse0 (= id_~ret~0 |id_#res|))) (or (= |id_#res| 0) (and (= id_~ret~0 1) .cse0) (and (or (= id_~ret~0 2) (exists ((v_id_~ret~0_13 Int)) (let ((.cse1 (+ v_id_~ret~0_13 2))) (and (<= .cse1 id_~ret~0) (<= 1 v_id_~ret~0_13) (<= id_~ret~0 .cse1) (<= v_id_~ret~0_13 1))))) .cse0))) [2020-08-22 18:49:33,487 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2020-08-22 18:49:33,487 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (or (exists ((v_id_~ret~0_9 Int)) (let ((.cse0 (+ v_id_~ret~0_9 2))) (and (<= v_id_~ret~0_9 1) (<= 1 v_id_~ret~0_9) (<= id_~ret~0 .cse0) (<= .cse0 id_~ret~0)))) (= id_~ret~0 2) (= id_~ret~0 1) (exists ((v_id_~ret~0_13 Int)) (let ((.cse1 (+ v_id_~ret~0_13 3))) (and (<= 1 v_id_~ret~0_13) (<= id_~ret~0 .cse1) (<= .cse1 id_~ret~0) (<= v_id_~ret~0_13 1))))) [2020-08-22 18:49:33,487 INFO L264 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (or (exists ((v_id_~ret~0_9 Int)) (let ((.cse0 (+ v_id_~ret~0_9 2))) (and (<= v_id_~ret~0_9 1) (<= 1 v_id_~ret~0_9) (<= id_~ret~0 .cse0) (<= .cse0 id_~ret~0)))) (= id_~ret~0 2) (= id_~ret~0 1) (exists ((v_id_~ret~0_13 Int)) (let ((.cse1 (+ v_id_~ret~0_13 3))) (and (<= 1 v_id_~ret~0_13) (<= id_~ret~0 .cse1) (<= .cse1 id_~ret~0) (<= v_id_~ret~0_13 1))))) [2020-08-22 18:49:33,488 INFO L271 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: true [2020-08-22 18:49:33,488 INFO L264 CegarLoopResult]: At program point L7-1(line 7) the Hoare annotation is: false [2020-08-22 18:49:33,488 INFO L271 CegarLoopResult]: At program point L5(line 5) the Hoare annotation is: true [2020-08-22 18:49:33,488 INFO L264 CegarLoopResult]: At program point L6-1(line 6) the Hoare annotation is: (let ((.cse0 (= |id_#t~ret0| id_~ret~0))) (or (and (= id_~ret~0 1) .cse0) (= |id_#t~ret0| 0) (and (or (= id_~ret~0 2) (exists ((v_id_~ret~0_13 Int)) (let ((.cse1 (+ v_id_~ret~0_13 2))) (and (<= .cse1 id_~ret~0) (<= 1 v_id_~ret~0_13) (<= id_~ret~0 .cse1) (<= v_id_~ret~0_13 1))))) .cse0))) [2020-08-22 18:49:33,488 INFO L271 CegarLoopResult]: At program point L5-1(line 5) the Hoare annotation is: true [2020-08-22 18:49:33,489 INFO L264 CegarLoopResult]: At program point L6-2(line 6) the Hoare annotation is: (let ((.cse0 (= |id_#t~ret0| id_~ret~0))) (or (and (= id_~ret~0 1) .cse0) (= |id_#t~ret0| 0) (and (or (= id_~ret~0 2) (exists ((v_id_~ret~0_13 Int)) (let ((.cse1 (+ v_id_~ret~0_13 2))) (and (<= .cse1 id_~ret~0) (<= 1 v_id_~ret~0_13) (<= id_~ret~0 .cse1) (<= v_id_~ret~0_13 1))))) .cse0))) [2020-08-22 18:49:33,489 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 .cse0 (or (= |id_#t~ret0| 2) (exists ((v_id_~ret~0_13 Int)) (let ((.cse1 (+ v_id_~ret~0_13 2))) (and (<= .cse1 |id_#t~ret0|) (<= 1 v_id_~ret~0_13) (<= |id_#t~ret0| .cse1) (<= v_id_~ret~0_13 1)))))) (and .cse0 (= |id_#t~ret0| 1)) (and .cse0 (= |id_#t~ret0| 0)))) [2020-08-22 18:49:33,502 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_id_~ret~0_13,QUANTIFIED] [2020-08-22 18:49:33,504 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_id_~ret~0_13,QUANTIFIED] [2020-08-22 18:49:33,504 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_id_~ret~0_13,QUANTIFIED] [2020-08-22 18:49:33,504 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_id_~ret~0_13,QUANTIFIED] [2020-08-22 18:49:33,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:49:33 BoogieIcfgContainer [2020-08-22 18:49:33,511 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:49:33,513 INFO L168 Benchmark]: Toolchain (without parser) took 4671.14 ms. Allocated memory was 143.7 MB in the beginning and 251.7 MB in the end (delta: 108.0 MB). Free memory was 99.4 MB in the beginning and 120.4 MB in the end (delta: -21.0 MB). Peak memory consumption was 87.0 MB. Max. memory is 7.1 GB. [2020-08-22 18:49:33,514 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 143.7 MB. Free memory was 118.0 MB in the beginning and 117.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 18:49:33,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.26 ms. Allocated memory is still 143.7 MB. Free memory was 99.2 MB in the beginning and 89.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:49:33,517 INFO L168 Benchmark]: Boogie Preprocessor took 161.35 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 89.9 MB in the beginning and 179.5 MB in the end (delta: -89.6 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-08-22 18:49:33,517 INFO L168 Benchmark]: RCFGBuilder took 286.33 ms. Allocated memory is still 200.8 MB. Free memory was 179.5 MB in the beginning and 167.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-08-22 18:49:33,519 INFO L168 Benchmark]: TraceAbstraction took 3921.15 ms. Allocated memory was 200.8 MB in the beginning and 251.7 MB in the end (delta: 50.9 MB). Free memory was 166.7 MB in the beginning and 120.4 MB in the end (delta: 46.3 MB). Peak memory consumption was 97.1 MB. Max. memory is 7.1 GB. [2020-08-22 18:49:33,523 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 143.7 MB. Free memory was 118.0 MB in the beginning and 117.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 295.26 ms. Allocated memory is still 143.7 MB. Free memory was 99.2 MB in the beginning and 89.9 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 161.35 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 89.9 MB in the beginning and 179.5 MB in the end (delta: -89.6 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 286.33 ms. Allocated memory is still 200.8 MB. Free memory was 179.5 MB in the beginning and 167.4 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3921.15 ms. Allocated memory was 200.8 MB in the beginning and 251.7 MB in the end (delta: 50.9 MB). Free memory was 166.7 MB in the beginning and 120.4 MB in the end (delta: 46.3 MB). Peak memory consumption was 97.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_id_~ret~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_id_~ret~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_id_~ret~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_id_~ret~0_13,QUANTIFIED] * 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 [2020-08-22 18:49:33,534 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_id_~ret~0_13,QUANTIFIED] [2020-08-22 18:49:33,534 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_id_~ret~0_13,QUANTIFIED] [2020-08-22 18:49:33,535 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_id_~ret~0_13,QUANTIFIED] [2020-08-22 18:49:33,535 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_id_~ret~0_13,QUANTIFIED] [2020-08-22 18:49:33,536 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_id_~ret~0_13,QUANTIFIED] [2020-08-22 18:49:33,536 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_id_~ret~0_13,QUANTIFIED] [2020-08-22 18:49:33,536 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_id_~ret~0_13,QUANTIFIED] [2020-08-22 18:49:33,536 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_id_~ret~0_13,QUANTIFIED] Derived contract for procedure id: (\result == 0 || (ret == 1 && ret == \result)) || ((ret == 2 || (\exists v_id_~ret~0_13 : int :: ((v_id_~ret~0_13 + 2 <= ret && 1 <= v_id_~ret~0_13) && ret <= v_id_~ret~0_13 + 2) && v_id_~ret~0_13 <= 1)) && ret == \result) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 103 SDtfs, 31 SDslu, 605 SDs, 0 SdLazy, 329 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 37 SyntacticMatches, 14 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 30 LocationsWithAnnotation, 42 PreInvPairs, 130 NumberOfFragments, 328 HoareAnnotationTreeSize, 42 FomulaSimplifications, 1160 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 30 FomulaSimplificationsInter, 739 FormulaSimplificationTreeSizeReductionInter, 0.5s 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...