/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum01_bug02.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:50:39,059 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-18 22:50:39,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:50:39,138 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:50:39,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:50:39,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:50:39,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:50:39,147 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:50:39,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:50:39,155 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:50:39,158 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:50:39,159 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:50:39,160 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:50:39,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:50:39,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 22:50:39,177 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:50:39,178 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:50:39,179 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:50:39,180 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 22:50:39,224 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:50:39,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:50:39,226 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:50:39,226 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:50:39,226 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:50:39,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:50:39,227 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:50:39,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:50:39,227 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:50:39,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:50:39,229 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:50:39,229 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:50:39,229 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:50:39,230 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:50:39,230 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:50:39,230 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:50:39,230 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:50:39,230 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:50:39,231 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:50:39,231 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:50:39,231 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:50:39,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:50:39,232 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:50:39,232 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:50:39,232 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:50:39,232 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:50:39,232 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:50:39,233 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:50:39,233 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:50:39,233 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:50:39,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:50:39,532 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:50:39,535 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:50:39,537 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:50:39,537 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:50:39,538 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01_bug02.i [2020-08-18 22:50:39,604 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d39ce580/dcc0566825214abca19a3d0daacc9a8d/FLAG0ed08aa5f [2020-08-18 22:50:40,034 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:50:40,035 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum01_bug02.i [2020-08-18 22:50:40,041 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d39ce580/dcc0566825214abca19a3d0daacc9a8d/FLAG0ed08aa5f [2020-08-18 22:50:40,400 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d39ce580/dcc0566825214abca19a3d0daacc9a8d [2020-08-18 22:50:40,411 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:50:40,413 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:50:40,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:50:40,414 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:50:40,418 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:50:40,419 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:50:40" (1/1) ... [2020-08-18 22:50:40,422 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4bb42231 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:50:40, skipping insertion in model container [2020-08-18 22:50:40,423 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:50:40" (1/1) ... [2020-08-18 22:50:40,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:50:40,449 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:50:40,621 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:50:40,625 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:50:40,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:50:40,657 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:50:40,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:50:40 WrapperNode [2020-08-18 22:50:40,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:50:40,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:50:40,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:50:40,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:50:40,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:50:40" (1/1) ... [2020-08-18 22:50:40,674 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:50:40" (1/1) ... [2020-08-18 22:50:40,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:50:40" (1/1) ... [2020-08-18 22:50:40,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:50:40" (1/1) ... [2020-08-18 22:50:40,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:50:40" (1/1) ... [2020-08-18 22:50:40,771 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:50:40" (1/1) ... [2020-08-18 22:50:40,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:50:40" (1/1) ... [2020-08-18 22:50:40,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:50:40,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:50:40,778 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:50:40,778 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:50:40,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:50:40" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:50:40,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:50:40,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:50:40,843 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 22:50:40,844 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:50:40,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:50:40,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 22:50:40,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-18 22:50:40,844 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:50:40,844 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:50:40,845 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:50:41,019 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:50:41,019 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 22:50:41,023 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:50:41 BoogieIcfgContainer [2020-08-18 22:50:41,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:50:41,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:50:41,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:50:41,027 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:50:41,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:50:40" (1/3) ... [2020-08-18 22:50:41,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7141dbb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:50:41, skipping insertion in model container [2020-08-18 22:50:41,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:50:40" (2/3) ... [2020-08-18 22:50:41,029 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7141dbb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:50:41, skipping insertion in model container [2020-08-18 22:50:41,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:50:41" (3/3) ... [2020-08-18 22:50:41,031 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01_bug02.i [2020-08-18 22:50:41,040 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:50:41,046 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:50:41,059 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:50:41,083 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:50:41,083 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:50:41,083 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:50:41,084 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:50:41,084 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:50:41,084 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:50:41,084 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:50:41,084 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:50:41,100 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-08-18 22:50:41,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-18 22:50:41,105 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:50:41,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:50:41,106 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:50:41,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:50:41,111 INFO L82 PathProgramCache]: Analyzing trace with hash -146959038, now seen corresponding path program 1 times [2020-08-18 22:50:41,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:50:41,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348127059] [2020-08-18 22:50:41,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:50:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:50:41,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:50:41,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:50:41,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:50:41,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348127059] [2020-08-18 22:50:41,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:50:41,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-18 22:50:41,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295433840] [2020-08-18 22:50:41,249 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-18 22:50:41,249 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:50:41,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-18 22:50:41,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-18 22:50:41,267 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-08-18 22:50:41,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:50:41,291 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-08-18 22:50:41,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-18 22:50:41,292 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-08-18 22:50:41,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:50:41,301 INFO L225 Difference]: With dead ends: 31 [2020-08-18 22:50:41,301 INFO L226 Difference]: Without dead ends: 14 [2020-08-18 22:50:41,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-18 22:50:41,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-08-18 22:50:41,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-08-18 22:50:41,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-08-18 22:50:41,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-08-18 22:50:41,346 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2020-08-18 22:50:41,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:50:41,346 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-08-18 22:50:41,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-18 22:50:41,347 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-08-18 22:50:41,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-18 22:50:41,348 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:50:41,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:50:41,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:50:41,349 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:50:41,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:50:41,349 INFO L82 PathProgramCache]: Analyzing trace with hash -158964811, now seen corresponding path program 1 times [2020-08-18 22:50:41,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:50:41,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647426215] [2020-08-18 22:50:41,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:50:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:50:41,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:50:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:50:41,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:50:41,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647426215] [2020-08-18 22:50:41,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:50:41,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 22:50:41,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004723344] [2020-08-18 22:50:41,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 22:50:41,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:50:41,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 22:50:41,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:50:41,452 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 5 states. [2020-08-18 22:50:41,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:50:41,493 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2020-08-18 22:50:41,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 22:50:41,494 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-08-18 22:50:41,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:50:41,495 INFO L225 Difference]: With dead ends: 23 [2020-08-18 22:50:41,495 INFO L226 Difference]: Without dead ends: 18 [2020-08-18 22:50:41,497 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 22:50:41,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-08-18 22:50:41,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-08-18 22:50:41,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-08-18 22:50:41,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-08-18 22:50:41,503 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2020-08-18 22:50:41,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:50:41,504 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-08-18 22:50:41,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 22:50:41,504 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-08-18 22:50:41,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 22:50:41,505 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:50:41,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:50:41,506 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:50:41,506 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:50:41,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:50:41,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1017948080, now seen corresponding path program 1 times [2020-08-18 22:50:41,507 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:50:41,507 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035955719] [2020-08-18 22:50:41,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:50:41,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:50:41,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:50:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:50:41,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:50:41,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035955719] [2020-08-18 22:50:41,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:50:41,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 22:50:41,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262445338] [2020-08-18 22:50:41,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:50:41,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:50:41,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:50:41,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:50:41,881 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 9 states. [2020-08-18 22:50:41,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:50:41,999 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-08-18 22:50:42,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 22:50:42,000 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-08-18 22:50:42,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:50:42,003 INFO L225 Difference]: With dead ends: 33 [2020-08-18 22:50:42,003 INFO L226 Difference]: Without dead ends: 28 [2020-08-18 22:50:42,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-18 22:50:42,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-18 22:50:42,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2020-08-18 22:50:42,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-08-18 22:50:42,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-08-18 22:50:42,012 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2020-08-18 22:50:42,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:50:42,012 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-08-18 22:50:42,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:50:42,013 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-08-18 22:50:42,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 22:50:42,014 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:50:42,014 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:50:42,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 22:50:42,017 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:50:42,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:50:42,017 INFO L82 PathProgramCache]: Analyzing trace with hash -852639511, now seen corresponding path program 1 times [2020-08-18 22:50:42,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:50:42,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89145924] [2020-08-18 22:50:42,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:50:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:50:42,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:50:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:50:42,095 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-08-18 22:50:42,096 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89145924] [2020-08-18 22:50:42,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:50:42,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 22:50:42,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335658348] [2020-08-18 22:50:42,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 22:50:42,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:50:42,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 22:50:42,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:50:42,099 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 3 states. [2020-08-18 22:50:42,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:50:42,133 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-08-18 22:50:42,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 22:50:42,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-18 22:50:42,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:50:42,136 INFO L225 Difference]: With dead ends: 32 [2020-08-18 22:50:42,137 INFO L226 Difference]: Without dead ends: 19 [2020-08-18 22:50:42,137 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 22:50:42,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-08-18 22:50:42,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-08-18 22:50:42,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-18 22:50:42,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-08-18 22:50:42,148 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 18 [2020-08-18 22:50:42,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:50:42,148 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-08-18 22:50:42,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 22:50:42,149 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-08-18 22:50:42,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 22:50:42,149 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:50:42,151 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:50:42,151 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 22:50:42,151 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:50:42,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:50:42,152 INFO L82 PathProgramCache]: Analyzing trace with hash -1920151575, now seen corresponding path program 2 times [2020-08-18 22:50:42,152 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:50:42,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119496675] [2020-08-18 22:50:42,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:50:42,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:50:42,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:50:42,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:50:42,231 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:50:42,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119496675] [2020-08-18 22:50:42,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:50:42,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-18 22:50:42,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571365156] [2020-08-18 22:50:42,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 22:50:42,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:50:42,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 22:50:42,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:50:42,234 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 5 states. [2020-08-18 22:50:42,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:50:42,295 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-08-18 22:50:42,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 22:50:42,296 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-08-18 22:50:42,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:50:42,297 INFO L225 Difference]: With dead ends: 30 [2020-08-18 22:50:42,297 INFO L226 Difference]: Without dead ends: 21 [2020-08-18 22:50:42,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:50:42,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-18 22:50:42,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-08-18 22:50:42,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-08-18 22:50:42,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-08-18 22:50:42,304 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 18 [2020-08-18 22:50:42,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:50:42,304 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-08-18 22:50:42,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 22:50:42,305 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-08-18 22:50:42,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 22:50:42,306 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:50:42,306 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:50:42,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 22:50:42,306 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:50:42,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:50:42,307 INFO L82 PathProgramCache]: Analyzing trace with hash -1110804949, now seen corresponding path program 2 times [2020-08-18 22:50:42,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:50:42,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970349326] [2020-08-18 22:50:42,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:50:42,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:50:42,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:50:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:50:42,555 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-18 22:50:42,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970349326] [2020-08-18 22:50:42,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:50:42,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 22:50:42,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890469452] [2020-08-18 22:50:42,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 22:50:42,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:50:42,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 22:50:42,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 22:50:42,558 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 10 states. [2020-08-18 22:50:42,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:50:42,740 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-08-18 22:50:42,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 22:50:42,741 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-08-18 22:50:42,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:50:42,742 INFO L225 Difference]: With dead ends: 31 [2020-08-18 22:50:42,742 INFO L226 Difference]: Without dead ends: 26 [2020-08-18 22:50:42,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-08-18 22:50:42,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-18 22:50:42,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-08-18 22:50:42,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-18 22:50:42,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-08-18 22:50:42,748 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 18 [2020-08-18 22:50:42,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:50:42,749 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-08-18 22:50:42,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 22:50:42,749 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-08-18 22:50:42,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-18 22:50:42,750 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:50:42,750 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:50:42,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 22:50:42,751 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:50:42,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:50:42,751 INFO L82 PathProgramCache]: Analyzing trace with hash -1780946716, now seen corresponding path program 3 times [2020-08-18 22:50:42,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:50:42,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849874513] [2020-08-18 22:50:42,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:50:42,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:50:42,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:50:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:50:42,813 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:50:42,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849874513] [2020-08-18 22:50:42,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:50:42,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 22:50:42,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002763790] [2020-08-18 22:50:42,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 22:50:42,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:50:42,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 22:50:42,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-08-18 22:50:42,815 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 7 states. [2020-08-18 22:50:42,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:50:42,855 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2020-08-18 22:50:42,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 22:50:42,855 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-08-18 22:50:42,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:50:42,856 INFO L225 Difference]: With dead ends: 38 [2020-08-18 22:50:42,856 INFO L226 Difference]: Without dead ends: 29 [2020-08-18 22:50:42,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-08-18 22:50:42,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-18 22:50:42,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-08-18 22:50:42,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-18 22:50:42,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-08-18 22:50:42,863 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 22 [2020-08-18 22:50:42,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:50:42,863 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-08-18 22:50:42,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 22:50:42,863 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-08-18 22:50:42,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 22:50:42,864 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:50:42,865 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:50:42,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 22:50:42,865 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:50:42,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:50:42,866 INFO L82 PathProgramCache]: Analyzing trace with hash -131462049, now seen corresponding path program 4 times [2020-08-18 22:50:42,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:50:42,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599412073] [2020-08-18 22:50:42,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:50:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:50:42,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:50:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:50:42,980 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:50:42,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599412073] [2020-08-18 22:50:42,981 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:50:42,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 22:50:42,981 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255063994] [2020-08-18 22:50:42,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 22:50:42,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:50:42,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 22:50:42,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:50:42,983 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 9 states. [2020-08-18 22:50:43,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:50:43,045 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2020-08-18 22:50:43,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 22:50:43,046 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-08-18 22:50:43,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:50:43,047 INFO L225 Difference]: With dead ends: 42 [2020-08-18 22:50:43,047 INFO L226 Difference]: Without dead ends: 33 [2020-08-18 22:50:43,048 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-08-18 22:50:43,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-18 22:50:43,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-08-18 22:50:43,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-18 22:50:43,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-08-18 22:50:43,054 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 26 [2020-08-18 22:50:43,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:50:43,054 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-08-18 22:50:43,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 22:50:43,055 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-08-18 22:50:43,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 22:50:43,055 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:50:43,056 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:50:43,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 22:50:43,056 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:50:43,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:50:43,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1107887526, now seen corresponding path program 5 times [2020-08-18 22:50:43,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:50:43,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146843287] [2020-08-18 22:50:43,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:50:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:50:43,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:50:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:50:43,190 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 13 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:50:43,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146843287] [2020-08-18 22:50:43,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 22:50:43,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 22:50:43,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107884646] [2020-08-18 22:50:43,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 22:50:43,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:50:43,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 22:50:43,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-08-18 22:50:43,199 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 11 states. [2020-08-18 22:50:43,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:50:43,282 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-08-18 22:50:43,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 22:50:43,284 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-08-18 22:50:43,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:50:43,285 INFO L225 Difference]: With dead ends: 46 [2020-08-18 22:50:43,285 INFO L226 Difference]: Without dead ends: 37 [2020-08-18 22:50:43,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-08-18 22:50:43,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-18 22:50:43,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-08-18 22:50:43,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-08-18 22:50:43,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-08-18 22:50:43,303 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 30 [2020-08-18 22:50:43,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:50:43,304 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-08-18 22:50:43,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 22:50:43,305 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-08-18 22:50:43,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-18 22:50:43,308 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:50:43,308 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:50:43,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 22:50:43,309 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:50:43,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:50:43,310 INFO L82 PathProgramCache]: Analyzing trace with hash -682200363, now seen corresponding path program 6 times [2020-08-18 22:50:43,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:50:43,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1166062835] [2020-08-18 22:50:43,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:50:43,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 22:50:43,361 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 22:50:43,361 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:50:43,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 22:50:43,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:50:43 BoogieIcfgContainer [2020-08-18 22:50:43,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:50:43,399 INFO L168 Benchmark]: Toolchain (without parser) took 2984.24 ms. Allocated memory was 141.6 MB in the beginning and 233.8 MB in the end (delta: 92.3 MB). Free memory was 104.8 MB in the beginning and 94.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 102.8 MB. Max. memory is 7.1 GB. [2020-08-18 22:50:43,400 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.7 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-18 22:50:43,401 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.66 ms. Allocated memory is still 141.6 MB. Free memory was 104.3 MB in the beginning and 95.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-08-18 22:50:43,402 INFO L168 Benchmark]: Boogie Preprocessor took 118.06 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 95.0 MB in the beginning and 184.0 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-18 22:50:43,402 INFO L168 Benchmark]: RCFGBuilder took 245.41 ms. Allocated memory is still 205.5 MB. Free memory was 184.0 MB in the beginning and 172.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2020-08-18 22:50:43,403 INFO L168 Benchmark]: TraceAbstraction took 2370.65 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 171.1 MB in the beginning and 94.2 MB in the end (delta: 76.9 MB). Peak memory consumption was 105.2 MB. Max. memory is 7.1 GB. [2020-08-18 22:50:43,407 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 141.6 MB. Free memory was 123.1 MB in the beginning and 122.7 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 244.66 ms. Allocated memory is still 141.6 MB. Free memory was 104.3 MB in the beginning and 95.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.06 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 95.0 MB in the beginning and 184.0 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 245.41 ms. Allocated memory is still 205.5 MB. Free memory was 184.0 MB in the beginning and 172.0 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2370.65 ms. Allocated memory was 205.5 MB in the beginning and 233.8 MB in the end (delta: 28.3 MB). Free memory was 171.1 MB in the beginning and 94.2 MB in the end (delta: 76.9 MB). Peak memory consumption was 105.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, j=10, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, j=10, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 [L13] COND TRUE i<=n [L14] COND TRUE i