/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:00:37,240 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:00:37,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:00:37,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:00:37,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:00:37,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:00:37,269 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:00:37,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:00:37,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:00:37,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:00:37,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:00:37,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:00:37,275 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:00:37,276 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:00:37,277 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:00:37,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:00:37,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:00:37,280 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:00:37,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:00:37,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:00:37,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:00:37,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:00:37,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:00:37,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:00:37,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 06:00:37,297 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:00:37,298 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:00:37,299 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:00:37,299 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 [2020-08-19 06:00:37,335 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:00:37,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:00:37,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:00:37,339 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:00:37,339 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:00:37,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:00:37,340 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:00:37,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:00:37,340 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:00:37,340 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:00:37,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:00:37,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:00:37,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:00:37,341 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:00:37,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:00:37,341 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:00:37,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:00:37,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:00:37,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:00:37,342 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:00:37,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:00:37,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:00:37,345 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:00:37,345 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:00:37,345 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:00:37,345 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:00:37,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:00:37,346 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:00:37,346 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:00:37,346 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=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 06:00:37,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:00:37,700 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:00:37,703 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:00:37,705 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:00:37,705 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:00:37,706 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_5.c [2020-08-19 06:00:37,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d86ce14d/8ec4c0759ed84452a57b9f1ac8348d43/FLAG7fa8b2a27 [2020-08-19 06:00:38,226 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:00:38,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_5.c [2020-08-19 06:00:38,234 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d86ce14d/8ec4c0759ed84452a57b9f1ac8348d43/FLAG7fa8b2a27 [2020-08-19 06:00:38,611 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9d86ce14d/8ec4c0759ed84452a57b9f1ac8348d43 [2020-08-19 06:00:38,622 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:00:38,624 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:00:38,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:00:38,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:00:38,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:00:38,630 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:00:38" (1/1) ... [2020-08-19 06:00:38,633 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6251f5ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:00:38, skipping insertion in model container [2020-08-19 06:00:38,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:00:38" (1/1) ... [2020-08-19 06:00:38,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:00:38,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:00:38,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:00:38,875 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:00:38,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:00:38,908 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:00:38,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:00:38 WrapperNode [2020-08-19 06:00:38,909 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:00:38,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:00:38,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:00:38,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:00:38,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:00:38" (1/1) ... [2020-08-19 06:00:38,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:00:38" (1/1) ... [2020-08-19 06:00:39,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:00:38" (1/1) ... [2020-08-19 06:00:39,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:00:38" (1/1) ... [2020-08-19 06:00:39,008 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:00:38" (1/1) ... [2020-08-19 06:00:39,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:00:38" (1/1) ... [2020-08-19 06:00:39,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:00:38" (1/1) ... [2020-08-19 06:00:39,016 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:00:39,017 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:00:39,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:00:39,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:00:39,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:00:38" (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 [2020-08-19 06:00:39,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:00:39,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:00:39,078 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:00:39,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:00:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:00:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:00:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:00:39,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:00:39,323 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:00:39,324 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 06:00:39,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:00:39 BoogieIcfgContainer [2020-08-19 06:00:39,329 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:00:39,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:00:39,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:00:39,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:00:39,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:00:38" (1/3) ... [2020-08-19 06:00:39,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24646ad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:00:39, skipping insertion in model container [2020-08-19 06:00:39,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:00:38" (2/3) ... [2020-08-19 06:00:39,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24646ad7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:00:39, skipping insertion in model container [2020-08-19 06:00:39,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:00:39" (3/3) ... [2020-08-19 06:00:39,337 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2020-08-19 06:00:39,354 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:00:39,364 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:00:39,378 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:00:39,406 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:00:39,407 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:00:39,407 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:00:39,407 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:00:39,407 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:00:39,407 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:00:39,407 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:00:39,408 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:00:39,440 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-08-19 06:00:39,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 06:00:39,451 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:39,453 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:00:39,453 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:39,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:39,460 INFO L82 PathProgramCache]: Analyzing trace with hash 316328318, now seen corresponding path program 1 times [2020-08-19 06:00:39,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:39,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536638050] [2020-08-19 06:00:39,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:39,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:39,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:39,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:00:39,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536638050] [2020-08-19 06:00:39,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:39,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:00:39,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611514143] [2020-08-19 06:00:39,641 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:00:39,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:39,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:00:39,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:00:39,655 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-08-19 06:00:39,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:39,718 INFO L93 Difference]: Finished difference Result 57 states and 90 transitions. [2020-08-19 06:00:39,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:00:39,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-08-19 06:00:39,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:39,732 INFO L225 Difference]: With dead ends: 57 [2020-08-19 06:00:39,732 INFO L226 Difference]: Without dead ends: 42 [2020-08-19 06:00:39,736 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 [2020-08-19 06:00:39,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-19 06:00:39,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-08-19 06:00:39,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-19 06:00:39,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 49 transitions. [2020-08-19 06:00:39,775 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 49 transitions. Word has length 15 [2020-08-19 06:00:39,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:39,776 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 49 transitions. [2020-08-19 06:00:39,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:00:39,776 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 49 transitions. [2020-08-19 06:00:39,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 06:00:39,777 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:39,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:00:39,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:00:39,778 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:39,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:39,779 INFO L82 PathProgramCache]: Analyzing trace with hash -493018308, now seen corresponding path program 1 times [2020-08-19 06:00:39,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:39,780 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678177453] [2020-08-19 06:00:39,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:39,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:39,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:39,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:00:39,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678177453] [2020-08-19 06:00:39,834 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:39,834 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:00:39,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465542754] [2020-08-19 06:00:39,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:00:39,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:39,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:00:39,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:00:39,837 INFO L87 Difference]: Start difference. First operand 30 states and 49 transitions. Second operand 3 states. [2020-08-19 06:00:39,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:39,865 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2020-08-19 06:00:39,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:00:39,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-08-19 06:00:39,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:39,867 INFO L225 Difference]: With dead ends: 67 [2020-08-19 06:00:39,868 INFO L226 Difference]: Without dead ends: 42 [2020-08-19 06:00:39,869 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 [2020-08-19 06:00:39,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-19 06:00:39,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-08-19 06:00:39,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-19 06:00:39,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 65 transitions. [2020-08-19 06:00:39,878 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 65 transitions. Word has length 15 [2020-08-19 06:00:39,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:39,878 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 65 transitions. [2020-08-19 06:00:39,879 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:00:39,879 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 65 transitions. [2020-08-19 06:00:39,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 06:00:39,880 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:39,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:00:39,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:00:39,881 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:39,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:39,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1216458266, now seen corresponding path program 1 times [2020-08-19 06:00:39,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:39,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359971962] [2020-08-19 06:00:39,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:39,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:39,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:00:39,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1359971962] [2020-08-19 06:00:39,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:39,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:00:39,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566388923] [2020-08-19 06:00:39,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:00:39,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:39,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:00:39,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:00:39,943 INFO L87 Difference]: Start difference. First operand 40 states and 65 transitions. Second operand 3 states. [2020-08-19 06:00:39,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:39,966 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-08-19 06:00:39,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:00:39,967 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 06:00:39,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:39,968 INFO L225 Difference]: With dead ends: 63 [2020-08-19 06:00:39,969 INFO L226 Difference]: Without dead ends: 45 [2020-08-19 06:00:39,969 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 [2020-08-19 06:00:39,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-08-19 06:00:39,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-08-19 06:00:39,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-19 06:00:39,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 67 transitions. [2020-08-19 06:00:39,977 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 67 transitions. Word has length 16 [2020-08-19 06:00:39,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:39,978 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 67 transitions. [2020-08-19 06:00:39,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:00:39,978 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 67 transitions. [2020-08-19 06:00:39,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 06:00:39,979 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:39,980 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:00:39,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:00:39,980 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:39,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:39,981 INFO L82 PathProgramCache]: Analyzing trace with hash 1896516636, now seen corresponding path program 1 times [2020-08-19 06:00:39,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:39,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980748520] [2020-08-19 06:00:39,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:40,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:00:40,023 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980748520] [2020-08-19 06:00:40,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:40,024 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:00:40,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659920879] [2020-08-19 06:00:40,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:00:40,025 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:40,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:00:40,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:00:40,026 INFO L87 Difference]: Start difference. First operand 43 states and 67 transitions. Second operand 3 states. [2020-08-19 06:00:40,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:40,048 INFO L93 Difference]: Finished difference Result 76 states and 120 transitions. [2020-08-19 06:00:40,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:00:40,049 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 06:00:40,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:40,051 INFO L225 Difference]: With dead ends: 76 [2020-08-19 06:00:40,051 INFO L226 Difference]: Without dead ends: 74 [2020-08-19 06:00:40,052 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 [2020-08-19 06:00:40,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-08-19 06:00:40,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2020-08-19 06:00:40,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-19 06:00:40,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 88 transitions. [2020-08-19 06:00:40,063 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 88 transitions. Word has length 16 [2020-08-19 06:00:40,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:40,063 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 88 transitions. [2020-08-19 06:00:40,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:00:40,064 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 88 transitions. [2020-08-19 06:00:40,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 06:00:40,065 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:40,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:00:40,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:00:40,066 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:40,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:40,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1087170010, now seen corresponding path program 1 times [2020-08-19 06:00:40,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:40,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289521105] [2020-08-19 06:00:40,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:40,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:00:40,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289521105] [2020-08-19 06:00:40,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:40,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:00:40,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450306977] [2020-08-19 06:00:40,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:00:40,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:40,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:00:40,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:00:40,107 INFO L87 Difference]: Start difference. First operand 56 states and 88 transitions. Second operand 3 states. [2020-08-19 06:00:40,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:40,141 INFO L93 Difference]: Finished difference Result 124 states and 198 transitions. [2020-08-19 06:00:40,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:00:40,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 06:00:40,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:40,148 INFO L225 Difference]: With dead ends: 124 [2020-08-19 06:00:40,148 INFO L226 Difference]: Without dead ends: 76 [2020-08-19 06:00:40,149 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 [2020-08-19 06:00:40,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-08-19 06:00:40,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-08-19 06:00:40,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-08-19 06:00:40,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 114 transitions. [2020-08-19 06:00:40,168 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 114 transitions. Word has length 16 [2020-08-19 06:00:40,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:40,168 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 114 transitions. [2020-08-19 06:00:40,168 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:00:40,171 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 114 transitions. [2020-08-19 06:00:40,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 06:00:40,172 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:40,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:00:40,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:00:40,173 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:40,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:40,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1337311087, now seen corresponding path program 1 times [2020-08-19 06:00:40,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:40,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429220973] [2020-08-19 06:00:40,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:40,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:00:40,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429220973] [2020-08-19 06:00:40,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:40,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:00:40,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325061587] [2020-08-19 06:00:40,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:00:40,245 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:40,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:00:40,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:00:40,248 INFO L87 Difference]: Start difference. First operand 74 states and 114 transitions. Second operand 3 states. [2020-08-19 06:00:40,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:40,284 INFO L93 Difference]: Finished difference Result 111 states and 169 transitions. [2020-08-19 06:00:40,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:00:40,285 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 06:00:40,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:40,286 INFO L225 Difference]: With dead ends: 111 [2020-08-19 06:00:40,287 INFO L226 Difference]: Without dead ends: 78 [2020-08-19 06:00:40,289 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 [2020-08-19 06:00:40,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-08-19 06:00:40,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-08-19 06:00:40,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-08-19 06:00:40,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 114 transitions. [2020-08-19 06:00:40,308 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 114 transitions. Word has length 17 [2020-08-19 06:00:40,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:40,312 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 114 transitions. [2020-08-19 06:00:40,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:00:40,312 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 114 transitions. [2020-08-19 06:00:40,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 06:00:40,313 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:40,314 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:00:40,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:00:40,314 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:40,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:40,319 INFO L82 PathProgramCache]: Analyzing trace with hash -657252717, now seen corresponding path program 1 times [2020-08-19 06:00:40,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:40,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250101552] [2020-08-19 06:00:40,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:40,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:00:40,357 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250101552] [2020-08-19 06:00:40,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:40,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:00:40,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817327427] [2020-08-19 06:00:40,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:00:40,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:40,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:00:40,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:00:40,360 INFO L87 Difference]: Start difference. First operand 76 states and 114 transitions. Second operand 3 states. [2020-08-19 06:00:40,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:40,379 INFO L93 Difference]: Finished difference Result 132 states and 200 transitions. [2020-08-19 06:00:40,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:00:40,380 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 06:00:40,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:40,381 INFO L225 Difference]: With dead ends: 132 [2020-08-19 06:00:40,382 INFO L226 Difference]: Without dead ends: 130 [2020-08-19 06:00:40,382 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 [2020-08-19 06:00:40,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-08-19 06:00:40,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 104. [2020-08-19 06:00:40,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-08-19 06:00:40,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 154 transitions. [2020-08-19 06:00:40,395 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 154 transitions. Word has length 17 [2020-08-19 06:00:40,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:40,395 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 154 transitions. [2020-08-19 06:00:40,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:00:40,396 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 154 transitions. [2020-08-19 06:00:40,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 06:00:40,397 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:40,397 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:00:40,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 06:00:40,398 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:40,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:40,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1466599343, now seen corresponding path program 1 times [2020-08-19 06:00:40,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:40,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851752742] [2020-08-19 06:00:40,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:40,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:40,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:00:40,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851752742] [2020-08-19 06:00:40,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:40,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:00:40,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048318080] [2020-08-19 06:00:40,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:00:40,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:40,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:00:40,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:00:40,431 INFO L87 Difference]: Start difference. First operand 104 states and 154 transitions. Second operand 3 states. [2020-08-19 06:00:40,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:40,453 INFO L93 Difference]: Finished difference Result 232 states and 344 transitions. [2020-08-19 06:00:40,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:00:40,454 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 06:00:40,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:40,455 INFO L225 Difference]: With dead ends: 232 [2020-08-19 06:00:40,456 INFO L226 Difference]: Without dead ends: 138 [2020-08-19 06:00:40,457 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 [2020-08-19 06:00:40,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-08-19 06:00:40,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-08-19 06:00:40,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-08-19 06:00:40,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 194 transitions. [2020-08-19 06:00:40,471 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 194 transitions. Word has length 17 [2020-08-19 06:00:40,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:40,472 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 194 transitions. [2020-08-19 06:00:40,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:00:40,472 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 194 transitions. [2020-08-19 06:00:40,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 06:00:40,474 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:40,474 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:00:40,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 06:00:40,474 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:40,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:40,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1100217935, now seen corresponding path program 1 times [2020-08-19 06:00:40,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:40,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981409773] [2020-08-19 06:00:40,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:40,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:00:40,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981409773] [2020-08-19 06:00:40,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:40,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:00:40,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029795631] [2020-08-19 06:00:40,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:00:40,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:40,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:00:40,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:00:40,524 INFO L87 Difference]: Start difference. First operand 136 states and 194 transitions. Second operand 3 states. [2020-08-19 06:00:40,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:40,542 INFO L93 Difference]: Finished difference Result 204 states and 288 transitions. [2020-08-19 06:00:40,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:00:40,543 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 06:00:40,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:40,544 INFO L225 Difference]: With dead ends: 204 [2020-08-19 06:00:40,544 INFO L226 Difference]: Without dead ends: 142 [2020-08-19 06:00:40,545 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 [2020-08-19 06:00:40,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-08-19 06:00:40,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-08-19 06:00:40,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-08-19 06:00:40,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 194 transitions. [2020-08-19 06:00:40,558 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 194 transitions. Word has length 18 [2020-08-19 06:00:40,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:40,558 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 194 transitions. [2020-08-19 06:00:40,558 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:00:40,558 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 194 transitions. [2020-08-19 06:00:40,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 06:00:40,560 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:40,560 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:00:40,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 06:00:40,560 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:40,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:40,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1780276305, now seen corresponding path program 1 times [2020-08-19 06:00:40,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:40,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849248469] [2020-08-19 06:00:40,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:40,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:00:40,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849248469] [2020-08-19 06:00:40,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:40,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:00:40,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681100950] [2020-08-19 06:00:40,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:00:40,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:40,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:00:40,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:00:40,590 INFO L87 Difference]: Start difference. First operand 140 states and 194 transitions. Second operand 3 states. [2020-08-19 06:00:40,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:40,610 INFO L93 Difference]: Finished difference Result 236 states and 328 transitions. [2020-08-19 06:00:40,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:00:40,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 06:00:40,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:40,613 INFO L225 Difference]: With dead ends: 236 [2020-08-19 06:00:40,613 INFO L226 Difference]: Without dead ends: 234 [2020-08-19 06:00:40,614 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 [2020-08-19 06:00:40,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-08-19 06:00:40,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 200. [2020-08-19 06:00:40,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-08-19 06:00:40,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 270 transitions. [2020-08-19 06:00:40,628 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 270 transitions. Word has length 18 [2020-08-19 06:00:40,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:40,629 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 270 transitions. [2020-08-19 06:00:40,629 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:00:40,629 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 270 transitions. [2020-08-19 06:00:40,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 06:00:40,631 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:40,631 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:00:40,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 06:00:40,631 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:40,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:40,632 INFO L82 PathProgramCache]: Analyzing trace with hash 970929679, now seen corresponding path program 1 times [2020-08-19 06:00:40,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:40,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918438754] [2020-08-19 06:00:40,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:40,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:00:40,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918438754] [2020-08-19 06:00:40,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:40,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:00:40,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321688509] [2020-08-19 06:00:40,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:00:40,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:40,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:00:40,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:00:40,684 INFO L87 Difference]: Start difference. First operand 200 states and 270 transitions. Second operand 3 states. [2020-08-19 06:00:40,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:40,708 INFO L93 Difference]: Finished difference Result 444 states and 592 transitions. [2020-08-19 06:00:40,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:00:40,709 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 06:00:40,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:40,711 INFO L225 Difference]: With dead ends: 444 [2020-08-19 06:00:40,711 INFO L226 Difference]: Without dead ends: 258 [2020-08-19 06:00:40,712 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 [2020-08-19 06:00:40,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-08-19 06:00:40,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2020-08-19 06:00:40,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-08-19 06:00:40,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 326 transitions. [2020-08-19 06:00:40,739 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 326 transitions. Word has length 18 [2020-08-19 06:00:40,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:40,740 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 326 transitions. [2020-08-19 06:00:40,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:00:40,740 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 326 transitions. [2020-08-19 06:00:40,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 06:00:40,747 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:40,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:00:40,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 06:00:40,750 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:40,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:40,750 INFO L82 PathProgramCache]: Analyzing trace with hash -645793370, now seen corresponding path program 1 times [2020-08-19 06:00:40,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:40,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273229281] [2020-08-19 06:00:40,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:00:40,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273229281] [2020-08-19 06:00:40,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:40,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:00:40,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873742071] [2020-08-19 06:00:40,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:00:40,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:40,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:00:40,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:00:40,774 INFO L87 Difference]: Start difference. First operand 256 states and 326 transitions. Second operand 3 states. [2020-08-19 06:00:40,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:40,792 INFO L93 Difference]: Finished difference Result 384 states and 484 transitions. [2020-08-19 06:00:40,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:00:40,793 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 06:00:40,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:40,794 INFO L225 Difference]: With dead ends: 384 [2020-08-19 06:00:40,795 INFO L226 Difference]: Without dead ends: 266 [2020-08-19 06:00:40,796 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 [2020-08-19 06:00:40,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-08-19 06:00:40,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 264. [2020-08-19 06:00:40,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-08-19 06:00:40,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 326 transitions. [2020-08-19 06:00:40,808 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 326 transitions. Word has length 19 [2020-08-19 06:00:40,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:40,808 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 326 transitions. [2020-08-19 06:00:40,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:00:40,808 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 326 transitions. [2020-08-19 06:00:40,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 06:00:40,810 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:40,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:00:40,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 06:00:40,811 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:40,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:40,811 INFO L82 PathProgramCache]: Analyzing trace with hash 34265000, now seen corresponding path program 1 times [2020-08-19 06:00:40,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:40,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354850056] [2020-08-19 06:00:40,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:00:40,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354850056] [2020-08-19 06:00:40,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:40,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:00:40,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373544176] [2020-08-19 06:00:40,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:00:40,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:40,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:00:40,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:00:40,835 INFO L87 Difference]: Start difference. First operand 264 states and 326 transitions. Second operand 3 states. [2020-08-19 06:00:40,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:40,856 INFO L93 Difference]: Finished difference Result 426 states and 519 transitions. [2020-08-19 06:00:40,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:00:40,856 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 06:00:40,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:40,859 INFO L225 Difference]: With dead ends: 426 [2020-08-19 06:00:40,859 INFO L226 Difference]: Without dead ends: 424 [2020-08-19 06:00:40,860 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 [2020-08-19 06:00:40,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-08-19 06:00:40,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 392. [2020-08-19 06:00:40,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-08-19 06:00:40,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 470 transitions. [2020-08-19 06:00:40,874 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 470 transitions. Word has length 19 [2020-08-19 06:00:40,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:40,874 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 470 transitions. [2020-08-19 06:00:40,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:00:40,875 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 470 transitions. [2020-08-19 06:00:40,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 06:00:40,876 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:00:40,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:00:40,877 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 06:00:40,877 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:00:40,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:00:40,877 INFO L82 PathProgramCache]: Analyzing trace with hash -775081626, now seen corresponding path program 1 times [2020-08-19 06:00:40,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:00:40,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1685678798] [2020-08-19 06:00:40,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:00:40,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:00:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:00:40,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:00:40,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1685678798] [2020-08-19 06:00:40,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:00:40,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:00:40,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776148694] [2020-08-19 06:00:40,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:00:40,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:00:40,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:00:40,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:00:40,901 INFO L87 Difference]: Start difference. First operand 392 states and 470 transitions. Second operand 3 states. [2020-08-19 06:00:40,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:00:40,927 INFO L93 Difference]: Finished difference Result 856 states and 998 transitions. [2020-08-19 06:00:40,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:00:40,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 06:00:40,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:00:40,928 INFO L225 Difference]: With dead ends: 856 [2020-08-19 06:00:40,928 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 06:00:40,930 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 [2020-08-19 06:00:40,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 06:00:40,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 06:00:40,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 06:00:40,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 06:00:40,931 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-08-19 06:00:40,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:00:40,931 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 06:00:40,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:00:40,931 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 06:00:40,931 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 06:00:40,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 06:00:40,934 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 06:00:40,958 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-19 06:00:40,958 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 06:00:40,958 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 06:00:40,958 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 06:00:40,959 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 06:00:40,959 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 06:00:40,959 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-08-19 06:00:40,959 INFO L271 CegarLoopResult]: At program point L89(lines 5 93) the Hoare annotation is: true [2020-08-19 06:00:40,959 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 93) no Hoare annotation was computed. [2020-08-19 06:00:40,959 INFO L268 CegarLoopResult]: For program point L73-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 06:00:40,959 INFO L268 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2020-08-19 06:00:40,960 INFO L268 CegarLoopResult]: For program point L57-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 06:00:40,960 INFO L268 CegarLoopResult]: For program point L53-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 06:00:40,960 INFO L268 CegarLoopResult]: For program point L49-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 06:00:40,960 INFO L268 CegarLoopResult]: For program point L78-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 06:00:40,960 INFO L268 CegarLoopResult]: For program point L45-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 06:00:40,960 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-08-19 06:00:40,960 INFO L268 CegarLoopResult]: For program point L41(lines 41 43) no Hoare annotation was computed. [2020-08-19 06:00:40,961 INFO L268 CegarLoopResult]: For program point L41-2(lines 24 88) no Hoare annotation was computed. [2020-08-19 06:00:40,961 INFO L271 CegarLoopResult]: At program point L83-1(lines 24 88) the Hoare annotation is: true [2020-08-19 06:00:40,961 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-08-19 06:00:40,961 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 93) no Hoare annotation was computed. [2020-08-19 06:00:40,961 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2020-08-19 06:00:40,961 INFO L268 CegarLoopResult]: For program point L63-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 06:00:40,961 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 93) the Hoare annotation is: true [2020-08-19 06:00:40,962 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-08-19 06:00:40,962 INFO L268 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-08-19 06:00:40,962 INFO L264 CegarLoopResult]: At program point L84-1(lines 5 93) the Hoare annotation is: false [2020-08-19 06:00:40,962 INFO L268 CegarLoopResult]: For program point L68-1(lines 24 88) no Hoare annotation was computed. [2020-08-19 06:00:40,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:00:40 BoogieIcfgContainer [2020-08-19 06:00:40,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:00:40,975 INFO L168 Benchmark]: Toolchain (without parser) took 2350.38 ms. Allocated memory was 139.5 MB in the beginning and 234.9 MB in the end (delta: 95.4 MB). Free memory was 102.3 MB in the beginning and 144.7 MB in the end (delta: -42.4 MB). Peak memory consumption was 53.0 MB. Max. memory is 7.1 GB. [2020-08-19 06:00:40,976 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 06:00:40,977 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.08 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 92.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-08-19 06:00:40,977 INFO L168 Benchmark]: Boogie Preprocessor took 106.72 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 92.1 MB in the beginning and 179.7 MB in the end (delta: -87.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-19 06:00:40,978 INFO L168 Benchmark]: RCFGBuilder took 311.98 ms. Allocated memory is still 201.3 MB. Free memory was 179.7 MB in the beginning and 164.9 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-08-19 06:00:40,979 INFO L168 Benchmark]: TraceAbstraction took 1642.39 ms. Allocated memory was 201.3 MB in the beginning and 234.9 MB in the end (delta: 33.6 MB). Free memory was 164.2 MB in the beginning and 144.7 MB in the end (delta: 19.5 MB). Peak memory consumption was 53.1 MB. Max. memory is 7.1 GB. [2020-08-19 06:00:40,983 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 284.08 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 92.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.72 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 92.1 MB in the beginning and 179.7 MB in the end (delta: -87.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 311.98 ms. Allocated memory is still 201.3 MB. Free memory was 179.7 MB in the beginning and 164.9 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1642.39 ms. Allocated memory was 201.3 MB in the beginning and 234.9 MB in the end (delta: 33.6 MB). Free memory was 164.2 MB in the beginning and 144.7 MB in the end (delta: 19.5 MB). Peak memory consumption was 53.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 91]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 654 SDtfs, 285 SDslu, 428 SDs, 0 SdLazy, 75 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=392occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 138 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 42 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 240 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 6424 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...