/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_6.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 23:32:13,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 23:32:13,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 23:32:13,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 23:32:13,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 23:32:13,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 23:32:13,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 23:32:13,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 23:32:13,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 23:32:13,245 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 23:32:13,246 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 23:32:13,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 23:32:13,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 23:32:13,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 23:32:13,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 23:32:13,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 23:32:13,251 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 23:32:13,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 23:32:13,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 23:32:13,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 23:32:13,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 23:32:13,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 23:32:13,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 23:32:13,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 23:32:13,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 23:32:13,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 23:32:13,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 23:32:13,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 23:32:13,272 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 23:32:13,295 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 23:32:13,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 23:32:13,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 23:32:13,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 23:32:13,297 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 23:32:13,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 23:32:13,297 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 23:32:13,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 23:32:13,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 23:32:13,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 23:32:13,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 23:32:13,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 23:32:13,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 23:32:13,299 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 23:32:13,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 23:32:13,300 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 23:32:13,300 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 23:32:13,300 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 23:32:13,300 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 23:32:13,300 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 23:32:13,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 23:32:13,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:32:13,301 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 23:32:13,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 23:32:13,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 23:32:13,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 23:32:13,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 23:32:13,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 23:32:13,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 23:32:13,304 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=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2; [2020-08-18 23:32:13,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 23:32:13,637 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 23:32:13,641 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 23:32:13,642 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 23:32:13,643 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 23:32:13,643 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_6.c [2020-08-18 23:32:13,703 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e3569cf8/dc39fc79c9a641b7bdee26b184d4ca39/FLAG586f1d699 [2020-08-18 23:32:14,148 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 23:32:14,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_6.c [2020-08-18 23:32:14,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e3569cf8/dc39fc79c9a641b7bdee26b184d4ca39/FLAG586f1d699 [2020-08-18 23:32:14,492 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e3569cf8/dc39fc79c9a641b7bdee26b184d4ca39 [2020-08-18 23:32:14,503 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 23:32:14,506 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 23:32:14,510 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 23:32:14,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 23:32:14,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 23:32:14,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:32:14" (1/1) ... [2020-08-18 23:32:14,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b8b919 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:32:14, skipping insertion in model container [2020-08-18 23:32:14,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 11:32:14" (1/1) ... [2020-08-18 23:32:14,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 23:32:14,548 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 23:32:14,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:32:14,719 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 23:32:14,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 23:32:14,774 INFO L208 MainTranslator]: Completed translation [2020-08-18 23:32:14,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:32:14 WrapperNode [2020-08-18 23:32:14,775 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 23:32:14,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 23:32:14,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 23:32:14,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 23:32:14,857 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:32:14" (1/1) ... [2020-08-18 23:32:14,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:32:14" (1/1) ... [2020-08-18 23:32:14,865 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:32:14" (1/1) ... [2020-08-18 23:32:14,866 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:32:14" (1/1) ... [2020-08-18 23:32:14,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:32:14" (1/1) ... [2020-08-18 23:32:14,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:32:14" (1/1) ... [2020-08-18 23:32:14,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:32:14" (1/1) ... [2020-08-18 23:32:14,880 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 23:32:14,881 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 23:32:14,881 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 23:32:14,881 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 23:32:14,882 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:32:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 23:32:14,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 23:32:14,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 23:32:14,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 23:32:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 23:32:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 23:32:14,948 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 23:32:14,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 23:32:14,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 23:32:15,195 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 23:32:15,196 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 23:32:15,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:32:15 BoogieIcfgContainer [2020-08-18 23:32:15,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 23:32:15,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 23:32:15,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 23:32:15,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 23:32:15,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 11:32:14" (1/3) ... [2020-08-18 23:32:15,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681ad779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:32:15, skipping insertion in model container [2020-08-18 23:32:15,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 11:32:14" (2/3) ... [2020-08-18 23:32:15,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681ad779 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 11:32:15, skipping insertion in model container [2020-08-18 23:32:15,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 11:32:15" (3/3) ... [2020-08-18 23:32:15,212 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2020-08-18 23:32:15,227 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 23:32:15,236 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 23:32:15,251 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 23:32:15,278 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 23:32:15,279 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 23:32:15,279 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 23:32:15,279 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 23:32:15,279 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 23:32:15,280 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 23:32:15,280 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 23:32:15,280 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 23:32:15,307 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-18 23:32:15,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-18 23:32:15,314 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:15,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:15,316 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:15,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:15,323 INFO L82 PathProgramCache]: Analyzing trace with hash 429652513, now seen corresponding path program 1 times [2020-08-18 23:32:15,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:15,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787318575] [2020-08-18 23:32:15,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:15,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:15,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:15,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:15,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787318575] [2020-08-18 23:32:15,527 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:15,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:32:15,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163873948] [2020-08-18 23:32:15,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:32:15,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:15,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:32:15,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:15,549 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-08-18 23:32:15,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:15,605 INFO L93 Difference]: Finished difference Result 63 states and 102 transitions. [2020-08-18 23:32:15,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:32:15,607 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-18 23:32:15,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:15,620 INFO L225 Difference]: With dead ends: 63 [2020-08-18 23:32:15,620 INFO L226 Difference]: Without dead ends: 48 [2020-08-18 23:32:15,624 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:15,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-18 23:32:15,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 34. [2020-08-18 23:32:15,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-18 23:32:15,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 57 transitions. [2020-08-18 23:32:15,669 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 57 transitions. Word has length 16 [2020-08-18 23:32:15,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:15,669 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 57 transitions. [2020-08-18 23:32:15,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:32:15,670 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 57 transitions. [2020-08-18 23:32:15,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-18 23:32:15,671 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:15,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:15,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 23:32:15,672 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:15,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:15,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1109710883, now seen corresponding path program 1 times [2020-08-18 23:32:15,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:15,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704198215] [2020-08-18 23:32:15,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:15,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:15,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:15,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:15,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704198215] [2020-08-18 23:32:15,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:15,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:32:15,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792568507] [2020-08-18 23:32:15,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:32:15,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:15,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:32:15,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:15,748 INFO L87 Difference]: Start difference. First operand 34 states and 57 transitions. Second operand 3 states. [2020-08-18 23:32:15,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:15,788 INFO L93 Difference]: Finished difference Result 77 states and 132 transitions. [2020-08-18 23:32:15,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:32:15,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-18 23:32:15,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:15,791 INFO L225 Difference]: With dead ends: 77 [2020-08-18 23:32:15,791 INFO L226 Difference]: Without dead ends: 48 [2020-08-18 23:32:15,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:15,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-18 23:32:15,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-08-18 23:32:15,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-08-18 23:32:15,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 77 transitions. [2020-08-18 23:32:15,802 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 77 transitions. Word has length 16 [2020-08-18 23:32:15,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:15,803 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 77 transitions. [2020-08-18 23:32:15,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:32:15,803 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 77 transitions. [2020-08-18 23:32:15,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-18 23:32:15,804 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:15,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:15,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 23:32:15,805 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:15,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:15,806 INFO L82 PathProgramCache]: Analyzing trace with hash 434540691, now seen corresponding path program 1 times [2020-08-18 23:32:15,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:15,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678732638] [2020-08-18 23:32:15,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:15,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:15,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:15,853 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678732638] [2020-08-18 23:32:15,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:15,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:32:15,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448302968] [2020-08-18 23:32:15,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:32:15,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:15,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:32:15,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:15,855 INFO L87 Difference]: Start difference. First operand 46 states and 77 transitions. Second operand 3 states. [2020-08-18 23:32:15,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:15,876 INFO L93 Difference]: Finished difference Result 72 states and 117 transitions. [2020-08-18 23:32:15,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:32:15,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-18 23:32:15,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:15,878 INFO L225 Difference]: With dead ends: 72 [2020-08-18 23:32:15,878 INFO L226 Difference]: Without dead ends: 51 [2020-08-18 23:32:15,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:15,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-18 23:32:15,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-08-18 23:32:15,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-08-18 23:32:15,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 79 transitions. [2020-08-18 23:32:15,888 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 79 transitions. Word has length 17 [2020-08-18 23:32:15,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:15,888 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 79 transitions. [2020-08-18 23:32:15,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:32:15,889 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 79 transitions. [2020-08-18 23:32:15,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-18 23:32:15,890 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:15,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:15,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 23:32:15,891 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:15,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:15,891 INFO L82 PathProgramCache]: Analyzing trace with hash 41513681, now seen corresponding path program 1 times [2020-08-18 23:32:15,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:15,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451393865] [2020-08-18 23:32:15,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:15,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:15,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:15,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:15,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:15,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451393865] [2020-08-18 23:32:15,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:15,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:32:15,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007863316] [2020-08-18 23:32:15,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:32:15,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:15,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:32:15,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:15,951 INFO L87 Difference]: Start difference. First operand 49 states and 79 transitions. Second operand 3 states. [2020-08-18 23:32:15,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:15,982 INFO L93 Difference]: Finished difference Result 88 states and 144 transitions. [2020-08-18 23:32:15,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:32:15,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-18 23:32:15,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:15,987 INFO L225 Difference]: With dead ends: 88 [2020-08-18 23:32:15,987 INFO L226 Difference]: Without dead ends: 86 [2020-08-18 23:32:15,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:15,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-08-18 23:32:15,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 64. [2020-08-18 23:32:15,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-08-18 23:32:16,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 104 transitions. [2020-08-18 23:32:16,001 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 104 transitions. Word has length 17 [2020-08-18 23:32:16,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:16,002 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 104 transitions. [2020-08-18 23:32:16,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:32:16,002 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 104 transitions. [2020-08-18 23:32:16,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-18 23:32:16,004 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:16,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:16,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 23:32:16,004 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:16,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:16,005 INFO L82 PathProgramCache]: Analyzing trace with hash 721572051, now seen corresponding path program 1 times [2020-08-18 23:32:16,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:16,006 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119048405] [2020-08-18 23:32:16,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:16,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:16,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:16,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119048405] [2020-08-18 23:32:16,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:16,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:32:16,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632845013] [2020-08-18 23:32:16,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:32:16,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:16,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:32:16,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:16,043 INFO L87 Difference]: Start difference. First operand 64 states and 104 transitions. Second operand 3 states. [2020-08-18 23:32:16,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:16,065 INFO L93 Difference]: Finished difference Result 144 states and 238 transitions. [2020-08-18 23:32:16,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:32:16,066 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-18 23:32:16,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:16,067 INFO L225 Difference]: With dead ends: 144 [2020-08-18 23:32:16,067 INFO L226 Difference]: Without dead ends: 88 [2020-08-18 23:32:16,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:16,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-08-18 23:32:16,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-08-18 23:32:16,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-08-18 23:32:16,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 138 transitions. [2020-08-18 23:32:16,080 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 138 transitions. Word has length 17 [2020-08-18 23:32:16,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:16,080 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 138 transitions. [2020-08-18 23:32:16,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:32:16,080 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 138 transitions. [2020-08-18 23:32:16,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 23:32:16,082 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:16,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:16,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 23:32:16,082 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:16,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:16,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1287139128, now seen corresponding path program 1 times [2020-08-18 23:32:16,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:16,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408401292] [2020-08-18 23:32:16,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:16,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:16,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:16,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408401292] [2020-08-18 23:32:16,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:16,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:32:16,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079013622] [2020-08-18 23:32:16,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:32:16,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:16,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:32:16,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:16,136 INFO L87 Difference]: Start difference. First operand 86 states and 138 transitions. Second operand 3 states. [2020-08-18 23:32:16,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:16,177 INFO L93 Difference]: Finished difference Result 129 states and 205 transitions. [2020-08-18 23:32:16,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:32:16,179 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-18 23:32:16,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:16,181 INFO L225 Difference]: With dead ends: 129 [2020-08-18 23:32:16,181 INFO L226 Difference]: Without dead ends: 90 [2020-08-18 23:32:16,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:16,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-08-18 23:32:16,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-08-18 23:32:16,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-08-18 23:32:16,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 138 transitions. [2020-08-18 23:32:16,206 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 138 transitions. Word has length 18 [2020-08-18 23:32:16,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:16,207 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 138 transitions. [2020-08-18 23:32:16,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:32:16,207 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 138 transitions. [2020-08-18 23:32:16,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 23:32:16,208 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:16,208 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:16,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 23:32:16,209 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:16,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:16,210 INFO L82 PathProgramCache]: Analyzing trace with hash 894112118, now seen corresponding path program 1 times [2020-08-18 23:32:16,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:16,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654654295] [2020-08-18 23:32:16,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:16,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654654295] [2020-08-18 23:32:16,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:16,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:32:16,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079085186] [2020-08-18 23:32:16,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:32:16,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:16,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:32:16,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:16,245 INFO L87 Difference]: Start difference. First operand 88 states and 138 transitions. Second operand 3 states. [2020-08-18 23:32:16,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:16,266 INFO L93 Difference]: Finished difference Result 156 states and 248 transitions. [2020-08-18 23:32:16,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:32:16,267 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-18 23:32:16,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:16,268 INFO L225 Difference]: With dead ends: 156 [2020-08-18 23:32:16,269 INFO L226 Difference]: Without dead ends: 154 [2020-08-18 23:32:16,270 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:16,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-18 23:32:16,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 120. [2020-08-18 23:32:16,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-18 23:32:16,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 186 transitions. [2020-08-18 23:32:16,284 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 186 transitions. Word has length 18 [2020-08-18 23:32:16,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:16,284 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 186 transitions. [2020-08-18 23:32:16,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:32:16,285 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 186 transitions. [2020-08-18 23:32:16,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 23:32:16,286 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:16,287 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:16,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 23:32:16,287 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:16,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:16,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1574170488, now seen corresponding path program 1 times [2020-08-18 23:32:16,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:16,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924233610] [2020-08-18 23:32:16,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:16,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:16,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924233610] [2020-08-18 23:32:16,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:16,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:32:16,348 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673359626] [2020-08-18 23:32:16,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:32:16,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:16,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:32:16,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:16,349 INFO L87 Difference]: Start difference. First operand 120 states and 186 transitions. Second operand 3 states. [2020-08-18 23:32:16,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:16,387 INFO L93 Difference]: Finished difference Result 272 states and 424 transitions. [2020-08-18 23:32:16,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:32:16,388 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-18 23:32:16,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:16,400 INFO L225 Difference]: With dead ends: 272 [2020-08-18 23:32:16,401 INFO L226 Difference]: Without dead ends: 162 [2020-08-18 23:32:16,402 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:16,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-18 23:32:16,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2020-08-18 23:32:16,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-08-18 23:32:16,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 242 transitions. [2020-08-18 23:32:16,416 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 242 transitions. Word has length 18 [2020-08-18 23:32:16,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:16,416 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 242 transitions. [2020-08-18 23:32:16,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:32:16,416 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 242 transitions. [2020-08-18 23:32:16,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 23:32:16,418 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:16,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:16,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 23:32:16,418 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:16,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:16,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1947887240, now seen corresponding path program 1 times [2020-08-18 23:32:16,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:16,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132631678] [2020-08-18 23:32:16,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:16,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132631678] [2020-08-18 23:32:16,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:16,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:32:16,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433059943] [2020-08-18 23:32:16,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:32:16,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:16,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:32:16,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:16,450 INFO L87 Difference]: Start difference. First operand 160 states and 242 transitions. Second operand 3 states. [2020-08-18 23:32:16,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:16,470 INFO L93 Difference]: Finished difference Result 240 states and 360 transitions. [2020-08-18 23:32:16,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:32:16,471 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-18 23:32:16,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:16,472 INFO L225 Difference]: With dead ends: 240 [2020-08-18 23:32:16,472 INFO L226 Difference]: Without dead ends: 166 [2020-08-18 23:32:16,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:16,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-18 23:32:16,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2020-08-18 23:32:16,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-08-18 23:32:16,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 242 transitions. [2020-08-18 23:32:16,487 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 242 transitions. Word has length 19 [2020-08-18 23:32:16,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:16,488 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 242 transitions. [2020-08-18 23:32:16,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:32:16,488 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 242 transitions. [2020-08-18 23:32:16,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 23:32:16,489 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:16,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:16,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-18 23:32:16,490 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:16,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:16,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1554860230, now seen corresponding path program 1 times [2020-08-18 23:32:16,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:16,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [210209168] [2020-08-18 23:32:16,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:16,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:16,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [210209168] [2020-08-18 23:32:16,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:16,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:32:16,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916080903] [2020-08-18 23:32:16,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:32:16,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:16,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:32:16,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:16,526 INFO L87 Difference]: Start difference. First operand 164 states and 242 transitions. Second operand 3 states. [2020-08-18 23:32:16,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:16,571 INFO L93 Difference]: Finished difference Result 284 states and 424 transitions. [2020-08-18 23:32:16,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:32:16,574 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-18 23:32:16,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:16,576 INFO L225 Difference]: With dead ends: 284 [2020-08-18 23:32:16,576 INFO L226 Difference]: Without dead ends: 282 [2020-08-18 23:32:16,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:16,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-18 23:32:16,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 232. [2020-08-18 23:32:16,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-08-18 23:32:16,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 334 transitions. [2020-08-18 23:32:16,592 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 334 transitions. Word has length 19 [2020-08-18 23:32:16,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:16,592 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 334 transitions. [2020-08-18 23:32:16,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:32:16,592 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 334 transitions. [2020-08-18 23:32:16,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 23:32:16,594 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:16,594 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:16,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-18 23:32:16,595 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:16,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:16,595 INFO L82 PathProgramCache]: Analyzing trace with hash -2060048696, now seen corresponding path program 1 times [2020-08-18 23:32:16,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:16,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889164667] [2020-08-18 23:32:16,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:16,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:16,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889164667] [2020-08-18 23:32:16,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:16,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:32:16,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512215354] [2020-08-18 23:32:16,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:32:16,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:16,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:32:16,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:16,620 INFO L87 Difference]: Start difference. First operand 232 states and 334 transitions. Second operand 3 states. [2020-08-18 23:32:16,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:16,643 INFO L93 Difference]: Finished difference Result 524 states and 752 transitions. [2020-08-18 23:32:16,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:32:16,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-18 23:32:16,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:16,646 INFO L225 Difference]: With dead ends: 524 [2020-08-18 23:32:16,646 INFO L226 Difference]: Without dead ends: 306 [2020-08-18 23:32:16,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:16,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-08-18 23:32:16,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2020-08-18 23:32:16,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-18 23:32:16,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 422 transitions. [2020-08-18 23:32:16,674 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 422 transitions. Word has length 19 [2020-08-18 23:32:16,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:16,678 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 422 transitions. [2020-08-18 23:32:16,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:32:16,678 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 422 transitions. [2020-08-18 23:32:16,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 23:32:16,680 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:16,680 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:16,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-18 23:32:16,683 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:16,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:16,683 INFO L82 PathProgramCache]: Analyzing trace with hash 956242573, now seen corresponding path program 1 times [2020-08-18 23:32:16,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:16,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683953592] [2020-08-18 23:32:16,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:16,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683953592] [2020-08-18 23:32:16,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:16,730 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:32:16,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439429955] [2020-08-18 23:32:16,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:32:16,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:16,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:32:16,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:16,732 INFO L87 Difference]: Start difference. First operand 304 states and 422 transitions. Second operand 3 states. [2020-08-18 23:32:16,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:16,760 INFO L93 Difference]: Finished difference Result 456 states and 628 transitions. [2020-08-18 23:32:16,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:32:16,760 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-18 23:32:16,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:16,762 INFO L225 Difference]: With dead ends: 456 [2020-08-18 23:32:16,765 INFO L226 Difference]: Without dead ends: 314 [2020-08-18 23:32:16,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:16,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-08-18 23:32:16,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 312. [2020-08-18 23:32:16,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-08-18 23:32:16,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 422 transitions. [2020-08-18 23:32:16,785 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 422 transitions. Word has length 20 [2020-08-18 23:32:16,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:16,785 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 422 transitions. [2020-08-18 23:32:16,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:32:16,786 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 422 transitions. [2020-08-18 23:32:16,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 23:32:16,789 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:16,789 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:16,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-18 23:32:16,794 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:16,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:16,795 INFO L82 PathProgramCache]: Analyzing trace with hash 563215563, now seen corresponding path program 1 times [2020-08-18 23:32:16,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:16,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789142084] [2020-08-18 23:32:16,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:16,858 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789142084] [2020-08-18 23:32:16,858 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:16,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:32:16,859 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38769691] [2020-08-18 23:32:16,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:32:16,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:16,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:32:16,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:16,863 INFO L87 Difference]: Start difference. First operand 312 states and 422 transitions. Second operand 3 states. [2020-08-18 23:32:16,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:16,896 INFO L93 Difference]: Finished difference Result 524 states and 712 transitions. [2020-08-18 23:32:16,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:32:16,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-18 23:32:16,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:16,901 INFO L225 Difference]: With dead ends: 524 [2020-08-18 23:32:16,901 INFO L226 Difference]: Without dead ends: 522 [2020-08-18 23:32:16,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:16,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-08-18 23:32:16,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 456. [2020-08-18 23:32:16,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-08-18 23:32:16,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 598 transitions. [2020-08-18 23:32:16,918 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 598 transitions. Word has length 20 [2020-08-18 23:32:16,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:16,919 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 598 transitions. [2020-08-18 23:32:16,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:32:16,919 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 598 transitions. [2020-08-18 23:32:16,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-18 23:32:16,923 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:16,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:16,924 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-18 23:32:16,924 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:16,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:16,924 INFO L82 PathProgramCache]: Analyzing trace with hash 1243273933, now seen corresponding path program 1 times [2020-08-18 23:32:16,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:16,931 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714382701] [2020-08-18 23:32:16,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:16,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:16,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714382701] [2020-08-18 23:32:16,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:16,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:32:16,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435120697] [2020-08-18 23:32:16,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:32:16,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:16,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:32:16,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:16,962 INFO L87 Difference]: Start difference. First operand 456 states and 598 transitions. Second operand 3 states. [2020-08-18 23:32:16,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:16,991 INFO L93 Difference]: Finished difference Result 1020 states and 1320 transitions. [2020-08-18 23:32:16,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:32:16,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-18 23:32:16,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:16,995 INFO L225 Difference]: With dead ends: 1020 [2020-08-18 23:32:16,995 INFO L226 Difference]: Without dead ends: 586 [2020-08-18 23:32:16,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:16,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-08-18 23:32:17,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 584. [2020-08-18 23:32:17,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-08-18 23:32:17,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 726 transitions. [2020-08-18 23:32:17,017 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 726 transitions. Word has length 20 [2020-08-18 23:32:17,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:17,018 INFO L479 AbstractCegarLoop]: Abstraction has 584 states and 726 transitions. [2020-08-18 23:32:17,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:32:17,018 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 726 transitions. [2020-08-18 23:32:17,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 23:32:17,019 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:17,019 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:17,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-18 23:32:17,020 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:17,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:17,020 INFO L82 PathProgramCache]: Analyzing trace with hash 280029309, now seen corresponding path program 1 times [2020-08-18 23:32:17,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:17,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831684890] [2020-08-18 23:32:17,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:17,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:17,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:17,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:17,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831684890] [2020-08-18 23:32:17,044 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:17,044 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:32:17,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807267970] [2020-08-18 23:32:17,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:32:17,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:17,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:32:17,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:17,045 INFO L87 Difference]: Start difference. First operand 584 states and 726 transitions. Second operand 3 states. [2020-08-18 23:32:17,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:17,070 INFO L93 Difference]: Finished difference Result 876 states and 1080 transitions. [2020-08-18 23:32:17,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:32:17,071 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-18 23:32:17,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:17,074 INFO L225 Difference]: With dead ends: 876 [2020-08-18 23:32:17,074 INFO L226 Difference]: Without dead ends: 602 [2020-08-18 23:32:17,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:17,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-08-18 23:32:17,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 600. [2020-08-18 23:32:17,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-08-18 23:32:17,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 726 transitions. [2020-08-18 23:32:17,097 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 726 transitions. Word has length 21 [2020-08-18 23:32:17,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:17,098 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 726 transitions. [2020-08-18 23:32:17,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:32:17,098 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 726 transitions. [2020-08-18 23:32:17,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 23:32:17,100 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:17,100 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:17,100 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-18 23:32:17,100 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:17,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:17,101 INFO L82 PathProgramCache]: Analyzing trace with hash -112997701, now seen corresponding path program 1 times [2020-08-18 23:32:17,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:17,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460886690] [2020-08-18 23:32:17,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:17,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:17,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:17,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:17,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:17,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460886690] [2020-08-18 23:32:17,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:17,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:32:17,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006162205] [2020-08-18 23:32:17,129 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:32:17,129 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:17,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:32:17,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:17,130 INFO L87 Difference]: Start difference. First operand 600 states and 726 transitions. Second operand 3 states. [2020-08-18 23:32:17,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:17,168 INFO L93 Difference]: Finished difference Result 970 states and 1159 transitions. [2020-08-18 23:32:17,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:32:17,168 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-18 23:32:17,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:17,173 INFO L225 Difference]: With dead ends: 970 [2020-08-18 23:32:17,173 INFO L226 Difference]: Without dead ends: 968 [2020-08-18 23:32:17,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:17,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-08-18 23:32:17,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 904. [2020-08-18 23:32:17,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-08-18 23:32:17,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1062 transitions. [2020-08-18 23:32:17,210 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1062 transitions. Word has length 21 [2020-08-18 23:32:17,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:17,210 INFO L479 AbstractCegarLoop]: Abstraction has 904 states and 1062 transitions. [2020-08-18 23:32:17,211 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:32:17,211 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1062 transitions. [2020-08-18 23:32:17,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 23:32:17,213 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 23:32:17,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 23:32:17,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-18 23:32:17,214 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 23:32:17,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 23:32:17,214 INFO L82 PathProgramCache]: Analyzing trace with hash 567060669, now seen corresponding path program 1 times [2020-08-18 23:32:17,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 23:32:17,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838657390] [2020-08-18 23:32:17,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 23:32:17,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:17,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 23:32:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 23:32:17,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 23:32:17,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838657390] [2020-08-18 23:32:17,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 23:32:17,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 23:32:17,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030820812] [2020-08-18 23:32:17,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 23:32:17,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 23:32:17,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 23:32:17,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:17,241 INFO L87 Difference]: Start difference. First operand 904 states and 1062 transitions. Second operand 3 states. [2020-08-18 23:32:17,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 23:32:17,291 INFO L93 Difference]: Finished difference Result 1992 states and 2278 transitions. [2020-08-18 23:32:17,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 23:32:17,292 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-18 23:32:17,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 23:32:17,293 INFO L225 Difference]: With dead ends: 1992 [2020-08-18 23:32:17,293 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 23:32:17,297 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 23:32:17,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 23:32:17,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 23:32:17,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 23:32:17,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 23:32:17,323 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-08-18 23:32:17,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 23:32:17,323 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 23:32:17,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 23:32:17,324 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 23:32:17,324 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 23:32:17,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-18 23:32:17,327 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 23:32:17,354 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-18 23:32:17,354 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 23:32:17,354 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 23:32:17,354 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 23:32:17,354 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 23:32:17,355 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 23:32:17,355 INFO L268 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-08-18 23:32:17,355 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 107) no Hoare annotation was computed. [2020-08-18 23:32:17,355 INFO L268 CegarLoopResult]: For program point L77-1(lines 27 102) no Hoare annotation was computed. [2020-08-18 23:32:17,355 INFO L268 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2020-08-18 23:32:17,355 INFO L271 CegarLoopResult]: At program point L103(lines 5 107) the Hoare annotation is: true [2020-08-18 23:32:17,356 INFO L268 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-08-18 23:32:17,356 INFO L268 CegarLoopResult]: For program point L62-1(lines 27 102) no Hoare annotation was computed. [2020-08-18 23:32:17,356 INFO L268 CegarLoopResult]: For program point L87-1(lines 27 102) no Hoare annotation was computed. [2020-08-18 23:32:17,356 INFO L268 CegarLoopResult]: For program point L54-1(lines 27 102) no Hoare annotation was computed. [2020-08-18 23:32:17,356 INFO L268 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-08-18 23:32:17,356 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 107) no Hoare annotation was computed. [2020-08-18 23:32:17,356 INFO L268 CegarLoopResult]: For program point L46-2(lines 27 102) no Hoare annotation was computed. [2020-08-18 23:32:17,357 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 105) no Hoare annotation was computed. [2020-08-18 23:32:17,357 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 107) the Hoare annotation is: true [2020-08-18 23:32:17,357 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-08-18 23:32:17,357 INFO L268 CegarLoopResult]: For program point L72-1(lines 27 102) no Hoare annotation was computed. [2020-08-18 23:32:17,357 INFO L271 CegarLoopResult]: At program point L97-1(lines 27 102) the Hoare annotation is: true [2020-08-18 23:32:17,357 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-08-18 23:32:17,357 INFO L268 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-08-18 23:32:17,358 INFO L264 CegarLoopResult]: At program point L98-1(lines 5 107) the Hoare annotation is: false [2020-08-18 23:32:17,358 INFO L268 CegarLoopResult]: For program point L82-1(lines 27 102) no Hoare annotation was computed. [2020-08-18 23:32:17,358 INFO L268 CegarLoopResult]: For program point L66-1(lines 27 102) no Hoare annotation was computed. [2020-08-18 23:32:17,358 INFO L268 CegarLoopResult]: For program point L58-1(lines 27 102) no Hoare annotation was computed. [2020-08-18 23:32:17,358 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-08-18 23:32:17,358 INFO L268 CegarLoopResult]: For program point L50-1(lines 27 102) no Hoare annotation was computed. [2020-08-18 23:32:17,358 INFO L268 CegarLoopResult]: For program point L92-1(lines 27 102) no Hoare annotation was computed. [2020-08-18 23:32:17,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 11:32:17 BoogieIcfgContainer [2020-08-18 23:32:17,373 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 23:32:17,378 INFO L168 Benchmark]: Toolchain (without parser) took 2871.51 ms. Allocated memory was 140.0 MB in the beginning and 245.4 MB in the end (delta: 105.4 MB). Free memory was 102.9 MB in the beginning and 212.4 MB in the end (delta: -109.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 23:32:17,381 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-18 23:32:17,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.14 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 92.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-08-18 23:32:17,384 INFO L168 Benchmark]: Boogie Preprocessor took 105.10 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 92.8 MB in the beginning and 179.3 MB in the end (delta: -86.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-08-18 23:32:17,385 INFO L168 Benchmark]: RCFGBuilder took 321.21 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 164.0 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-08-18 23:32:17,389 INFO L168 Benchmark]: TraceAbstraction took 2169.66 ms. Allocated memory was 201.9 MB in the beginning and 245.4 MB in the end (delta: 43.5 MB). Free memory was 163.0 MB in the beginning and 212.6 MB in the end (delta: -49.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 23:32:17,391 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 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 265.14 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 92.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 105.10 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 92.8 MB in the beginning and 179.3 MB in the end (delta: -86.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 321.21 ms. Allocated memory is still 201.9 MB. Free memory was 179.3 MB in the beginning and 164.0 MB in the end (delta: 15.3 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2169.66 ms. Allocated memory was 201.9 MB in the beginning and 245.4 MB in the end (delta: 43.5 MB). Free memory was 163.0 MB in the beginning and 212.6 MB in the end (delta: -49.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 105]: 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: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 17, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 923 SDtfs, 417 SDslu, 612 SDs, 0 SdLazy, 91 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=904occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 17 MinimizatonAttempts, 270 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 74 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, 0.4s InterpolantComputationTime, 317 NumberOfCodeBlocks, 317 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 300 ConstructedInterpolants, 0 QuantifiedInterpolants, 9690 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 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...