/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=DEEPEST -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 21:13:51,193 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-18 21:13:51,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:13:51,229 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:13:51,230 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:13:51,231 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:13:51,232 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:13:51,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:13:51,235 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:13:51,237 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:13:51,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:13:51,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:13:51,241 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:13:51,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:13:51,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 21:13:51,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:13:51,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:13:51,253 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:13:51,254 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 21:13:51,277 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:13:51,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:13:51,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:13:51,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:13:51,279 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:13:51,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:13:51,280 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:13:51,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:13:51,280 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:13:51,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:13:51,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:13:51,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:13:51,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:13:51,281 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:13:51,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:13:51,281 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:13:51,282 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:13:51,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:13:51,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:13:51,282 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:13:51,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:13:51,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:13:51,283 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:13:51,283 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:13:51,283 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:13:51,283 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:13:51,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:13:51,284 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:13:51,284 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:13:51,284 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=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 21:13:51,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:13:51,629 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:13:51,632 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:13:51,634 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:13:51,635 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:13:51,635 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01_bug02.i [2020-08-18 21:13:51,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/12625e50b/cc01e224fddf4707a0d8406becc5eab1/FLAG1b3162a9c [2020-08-18 21:13:52,157 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:13:52,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum01_bug02.i [2020-08-18 21:13:52,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/12625e50b/cc01e224fddf4707a0d8406becc5eab1/FLAG1b3162a9c [2020-08-18 21:13:52,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/12625e50b/cc01e224fddf4707a0d8406becc5eab1 [2020-08-18 21:13:52,593 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:13:52,595 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:13:52,596 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:13:52,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:13:52,600 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:13:52,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:13:52" (1/1) ... [2020-08-18 21:13:52,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@500f3ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:52, skipping insertion in model container [2020-08-18 21:13:52,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:13:52" (1/1) ... [2020-08-18 21:13:52,614 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:13:52,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:13:52,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:13:52,918 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:13:52,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:13:52,951 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:13:52,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:52 WrapperNode [2020-08-18 21:13:52,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:13:52,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:13:52,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:13:52,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:13:52,971 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:52" (1/1) ... [2020-08-18 21:13:52,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:52" (1/1) ... [2020-08-18 21:13:53,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:52" (1/1) ... [2020-08-18 21:13:53,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:52" (1/1) ... [2020-08-18 21:13:53,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:52" (1/1) ... [2020-08-18 21:13:53,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:52" (1/1) ... [2020-08-18 21:13:53,129 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:52" (1/1) ... [2020-08-18 21:13:53,135 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:13:53,136 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:13:53,136 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:13:53,136 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:13:53,137 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:52" (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 21:13:53,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:13:53,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:13:53,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 21:13:53,214 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:13:53,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:13:53,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 21:13:53,216 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-18 21:13:53,217 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:13:53,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:13:53,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:13:53,417 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:13:53,418 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 21:13:53,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:13:53 BoogieIcfgContainer [2020-08-18 21:13:53,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:13:53,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:13:53,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:13:53,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:13:53,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:13:52" (1/3) ... [2020-08-18 21:13:53,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30453597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:13:53, skipping insertion in model container [2020-08-18 21:13:53,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:13:52" (2/3) ... [2020-08-18 21:13:53,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30453597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:13:53, skipping insertion in model container [2020-08-18 21:13:53,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:13:53" (3/3) ... [2020-08-18 21:13:53,430 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01_bug02.i [2020-08-18 21:13:53,441 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:13:53,447 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:13:53,461 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:13:53,485 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:13:53,485 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:13:53,485 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:13:53,485 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:13:53,486 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:13:53,486 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:13:53,486 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:13:53,486 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:13:53,502 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-08-18 21:13:53,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-18 21:13:53,509 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:13:53,510 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:13:53,510 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:13:53,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:13:53,517 INFO L82 PathProgramCache]: Analyzing trace with hash -146959038, now seen corresponding path program 1 times [2020-08-18 21:13:53,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:13:53,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757558021] [2020-08-18 21:13:53,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:13:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:53,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:13:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:53,669 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 21:13:53,670 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757558021] [2020-08-18 21:13:53,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:13:53,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-18 21:13:53,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446349211] [2020-08-18 21:13:53,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-18 21:13:53,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:13:53,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-18 21:13:53,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-18 21:13:53,696 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-08-18 21:13:53,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:13:53,716 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-08-18 21:13:53,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-18 21:13:53,717 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-08-18 21:13:53,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:13:53,726 INFO L225 Difference]: With dead ends: 31 [2020-08-18 21:13:53,726 INFO L226 Difference]: Without dead ends: 14 [2020-08-18 21:13:53,730 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 21:13:53,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-08-18 21:13:53,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-08-18 21:13:53,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-08-18 21:13:53,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-08-18 21:13:53,769 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 10 [2020-08-18 21:13:53,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:13:53,770 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-08-18 21:13:53,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-18 21:13:53,770 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-08-18 21:13:53,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-18 21:13:53,771 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:13:53,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:13:53,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:13:53,772 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:13:53,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:13:53,773 INFO L82 PathProgramCache]: Analyzing trace with hash -158964811, now seen corresponding path program 1 times [2020-08-18 21:13:53,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:13:53,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694161914] [2020-08-18 21:13:53,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:13:53,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:53,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:13:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:53,877 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 21:13:53,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694161914] [2020-08-18 21:13:53,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:13:53,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 21:13:53,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648448978] [2020-08-18 21:13:53,880 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:13:53,880 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:13:53,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:13:53,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:13:53,881 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 5 states. [2020-08-18 21:13:53,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:13:53,924 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2020-08-18 21:13:53,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 21:13:53,925 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-08-18 21:13:53,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:13:53,926 INFO L225 Difference]: With dead ends: 23 [2020-08-18 21:13:53,926 INFO L226 Difference]: Without dead ends: 18 [2020-08-18 21:13:53,928 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 21:13:53,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-08-18 21:13:53,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-08-18 21:13:53,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-08-18 21:13:53,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-08-18 21:13:53,934 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 10 [2020-08-18 21:13:53,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:13:53,935 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-08-18 21:13:53,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:13:53,935 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-08-18 21:13:53,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-08-18 21:13:53,936 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:13:53,936 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:13:53,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:13:53,937 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:13:53,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:13:53,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1017948080, now seen corresponding path program 1 times [2020-08-18 21:13:53,938 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:13:53,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486084042] [2020-08-18 21:13:53,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:13:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:54,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:13:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:54,257 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 21:13:54,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486084042] [2020-08-18 21:13:54,258 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:13:54,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 21:13:54,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893213137] [2020-08-18 21:13:54,259 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:13:54,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:13:54,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:13:54,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:13:54,260 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 9 states. [2020-08-18 21:13:54,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:13:54,386 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-08-18 21:13:54,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 21:13:54,387 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-08-18 21:13:54,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:13:54,390 INFO L225 Difference]: With dead ends: 33 [2020-08-18 21:13:54,390 INFO L226 Difference]: Without dead ends: 28 [2020-08-18 21:13:54,391 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 21:13:54,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-18 21:13:54,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 23. [2020-08-18 21:13:54,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-08-18 21:13:54,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-08-18 21:13:54,399 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 14 [2020-08-18 21:13:54,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:13:54,400 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-08-18 21:13:54,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:13:54,400 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-08-18 21:13:54,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 21:13:54,401 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:13:54,401 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:13:54,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:13:54,402 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:13:54,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:13:54,402 INFO L82 PathProgramCache]: Analyzing trace with hash -852639511, now seen corresponding path program 1 times [2020-08-18 21:13:54,403 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:13:54,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1925264468] [2020-08-18 21:13:54,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:13:54,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:54,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:13:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:54,454 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 21:13:54,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1925264468] [2020-08-18 21:13:54,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:13:54,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 21:13:54,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365430266] [2020-08-18 21:13:54,456 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 21:13:54,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:13:54,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 21:13:54,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 21:13:54,457 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 3 states. [2020-08-18 21:13:54,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:13:54,482 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-08-18 21:13:54,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 21:13:54,483 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-18 21:13:54,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:13:54,484 INFO L225 Difference]: With dead ends: 32 [2020-08-18 21:13:54,484 INFO L226 Difference]: Without dead ends: 19 [2020-08-18 21:13:54,485 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 21:13:54,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-08-18 21:13:54,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-08-18 21:13:54,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-18 21:13:54,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-08-18 21:13:54,490 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 18 [2020-08-18 21:13:54,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:13:54,491 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-08-18 21:13:54,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 21:13:54,491 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-08-18 21:13:54,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 21:13:54,492 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:13:54,492 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:13:54,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 21:13:54,493 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:13:54,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:13:54,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1920151575, now seen corresponding path program 2 times [2020-08-18 21:13:54,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:13:54,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356047717] [2020-08-18 21:13:54,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:13:54,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:54,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:13:54,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:54,555 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 21:13:54,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356047717] [2020-08-18 21:13:54,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:13:54,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-18 21:13:54,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566885102] [2020-08-18 21:13:54,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 21:13:54,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:13:54,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 21:13:54,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-08-18 21:13:54,558 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 5 states. [2020-08-18 21:13:54,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:13:54,600 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-08-18 21:13:54,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 21:13:54,601 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-08-18 21:13:54,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:13:54,602 INFO L225 Difference]: With dead ends: 30 [2020-08-18 21:13:54,602 INFO L226 Difference]: Without dead ends: 21 [2020-08-18 21:13:54,603 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 21:13:54,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-18 21:13:54,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-08-18 21:13:54,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-08-18 21:13:54,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-08-18 21:13:54,611 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 18 [2020-08-18 21:13:54,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:13:54,612 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-08-18 21:13:54,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 21:13:54,612 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-08-18 21:13:54,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 21:13:54,613 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:13:54,613 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:13:54,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 21:13:54,614 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:13:54,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:13:54,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1110804949, now seen corresponding path program 2 times [2020-08-18 21:13:54,615 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:13:54,615 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1483770471] [2020-08-18 21:13:54,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:13:54,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:54,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:13:54,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:54,925 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 21:13:54,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1483770471] [2020-08-18 21:13:54,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:13:54,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 21:13:54,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873726853] [2020-08-18 21:13:54,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:13:54,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:13:54,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:13:54,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:13:54,928 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 10 states. [2020-08-18 21:13:55,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:13:55,127 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2020-08-18 21:13:55,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 21:13:55,128 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-08-18 21:13:55,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:13:55,129 INFO L225 Difference]: With dead ends: 31 [2020-08-18 21:13:55,129 INFO L226 Difference]: Without dead ends: 26 [2020-08-18 21:13:55,130 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 21:13:55,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-18 21:13:55,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-08-18 21:13:55,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-18 21:13:55,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-08-18 21:13:55,135 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 18 [2020-08-18 21:13:55,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:13:55,136 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-08-18 21:13:55,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:13:55,136 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-08-18 21:13:55,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-18 21:13:55,137 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:13:55,137 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:13:55,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 21:13:55,138 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:13:55,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:13:55,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1780946716, now seen corresponding path program 3 times [2020-08-18 21:13:55,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:13:55,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1881465849] [2020-08-18 21:13:55,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:13:55,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:55,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:13:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:55,233 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 21:13:55,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1881465849] [2020-08-18 21:13:55,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:13:55,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-18 21:13:55,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220437256] [2020-08-18 21:13:55,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 21:13:55,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:13:55,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 21:13:55,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:13:55,236 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 7 states. [2020-08-18 21:13:55,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:13:55,285 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2020-08-18 21:13:55,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 21:13:55,285 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-08-18 21:13:55,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:13:55,286 INFO L225 Difference]: With dead ends: 38 [2020-08-18 21:13:55,286 INFO L226 Difference]: Without dead ends: 29 [2020-08-18 21:13:55,287 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 21:13:55,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-18 21:13:55,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-08-18 21:13:55,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-18 21:13:55,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-08-18 21:13:55,293 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 22 [2020-08-18 21:13:55,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:13:55,294 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-08-18 21:13:55,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 21:13:55,294 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-08-18 21:13:55,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-18 21:13:55,295 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:13:55,295 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:13:55,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 21:13:55,295 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:13:55,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:13:55,296 INFO L82 PathProgramCache]: Analyzing trace with hash -131462049, now seen corresponding path program 4 times [2020-08-18 21:13:55,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:13:55,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087843478] [2020-08-18 21:13:55,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:13:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:55,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:13:55,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:55,415 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 21:13:55,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087843478] [2020-08-18 21:13:55,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:13:55,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-18 21:13:55,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125131212] [2020-08-18 21:13:55,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-18 21:13:55,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:13:55,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-18 21:13:55,420 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-08-18 21:13:55,420 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 9 states. [2020-08-18 21:13:55,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:13:55,516 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2020-08-18 21:13:55,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-18 21:13:55,518 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-08-18 21:13:55,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:13:55,520 INFO L225 Difference]: With dead ends: 42 [2020-08-18 21:13:55,520 INFO L226 Difference]: Without dead ends: 33 [2020-08-18 21:13:55,521 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 21:13:55,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-18 21:13:55,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-08-18 21:13:55,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-18 21:13:55,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-08-18 21:13:55,530 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 26 [2020-08-18 21:13:55,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:13:55,531 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-08-18 21:13:55,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-18 21:13:55,531 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-08-18 21:13:55,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-18 21:13:55,532 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:13:55,532 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:13:55,532 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 21:13:55,532 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:13:55,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:13:55,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1107887526, now seen corresponding path program 5 times [2020-08-18 21:13:55,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:13:55,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1737351400] [2020-08-18 21:13:55,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:13:55,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:55,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:13:55,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:13:55,643 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 21:13:55,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1737351400] [2020-08-18 21:13:55,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:13:55,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 21:13:55,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196233554] [2020-08-18 21:13:55,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-18 21:13:55,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:13:55,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-18 21:13:55,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-08-18 21:13:55,646 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 11 states. [2020-08-18 21:13:55,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:13:55,714 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-08-18 21:13:55,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 21:13:55,714 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2020-08-18 21:13:55,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:13:55,716 INFO L225 Difference]: With dead ends: 46 [2020-08-18 21:13:55,716 INFO L226 Difference]: Without dead ends: 37 [2020-08-18 21:13:55,716 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 21:13:55,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-18 21:13:55,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-08-18 21:13:55,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-08-18 21:13:55,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-08-18 21:13:55,723 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 30 [2020-08-18 21:13:55,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:13:55,724 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-08-18 21:13:55,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-18 21:13:55,724 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-08-18 21:13:55,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-18 21:13:55,725 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:13:55,725 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:13:55,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 21:13:55,726 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:13:55,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:13:55,727 INFO L82 PathProgramCache]: Analyzing trace with hash -682200363, now seen corresponding path program 6 times [2020-08-18 21:13:55,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:13:55,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530598176] [2020-08-18 21:13:55,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:13:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 21:13:55,763 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 21:13:55,763 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 21:13:55,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 21:13:55,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:13:55 BoogieIcfgContainer [2020-08-18 21:13:55,796 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 21:13:55,799 INFO L168 Benchmark]: Toolchain (without parser) took 3202.76 ms. Allocated memory was 137.4 MB in the beginning and 231.7 MB in the end (delta: 94.4 MB). Free memory was 100.6 MB in the beginning and 98.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 96.3 MB. Max. memory is 7.1 GB. [2020-08-18 21:13:55,800 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 21:13:55,801 INFO L168 Benchmark]: CACSL2BoogieTranslator took 356.23 ms. Allocated memory is still 137.4 MB. Free memory was 100.4 MB in the beginning and 91.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-08-18 21:13:55,802 INFO L168 Benchmark]: Boogie Preprocessor took 182.32 ms. Allocated memory was 137.4 MB in the beginning and 202.9 MB in the end (delta: 65.5 MB). Free memory was 91.0 MB in the beginning and 181.1 MB in the end (delta: -90.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-08-18 21:13:55,807 INFO L168 Benchmark]: RCFGBuilder took 285.97 ms. Allocated memory is still 202.9 MB. Free memory was 181.1 MB in the beginning and 169.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-08-18 21:13:55,809 INFO L168 Benchmark]: TraceAbstraction took 2373.00 ms. Allocated memory was 202.9 MB in the beginning and 231.7 MB in the end (delta: 28.8 MB). Free memory was 168.3 MB in the beginning and 98.7 MB in the end (delta: 69.5 MB). Peak memory consumption was 98.4 MB. Max. memory is 7.1 GB. [2020-08-18 21:13:55,820 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 356.23 ms. Allocated memory is still 137.4 MB. Free memory was 100.4 MB in the beginning and 91.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 182.32 ms. Allocated memory was 137.4 MB in the beginning and 202.9 MB in the end (delta: 65.5 MB). Free memory was 91.0 MB in the beginning and 181.1 MB in the end (delta: -90.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 285.97 ms. Allocated memory is still 202.9 MB. Free memory was 181.1 MB in the beginning and 169.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2373.00 ms. Allocated memory was 202.9 MB in the beginning and 231.7 MB in the end (delta: 28.8 MB). Free memory was 168.3 MB in the beginning and 98.7 MB in the end (delta: 69.5 MB). Peak memory consumption was 98.4 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