/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 -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 [2020-08-19 06:49:10,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:49:10,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:49:10,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:49:10,760 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:49:10,769 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:49:10,771 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:49:10,775 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:49:10,777 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:49:10,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:49:10,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:49:10,782 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:49:10,782 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:49:10,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:49:10,787 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:49:10,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:49:10,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:49:10,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:49:10,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:49:10,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:49:10,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:49:10,804 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:49:10,805 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:49:10,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:49:10,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 06:49:10,834 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:49:10,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:49:10,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:49:10,838 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 06:49:10,879 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:49:10,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:49:10,881 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:49:10,882 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:49:10,882 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:49:10,882 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:49:10,882 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:49:10,882 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:49:10,883 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:49:10,883 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:49:10,884 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:49:10,884 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:49:10,884 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:49:10,885 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:49:10,885 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:49:10,885 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:49:10,885 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:49:10,885 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:49:10,886 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:49:10,886 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:49:10,886 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:49:10,886 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:49:10,887 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:49:10,887 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:49:10,887 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:49:10,887 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:49:10,887 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:49:10,888 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:49:10,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:49:10,888 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5; [2020-08-19 06:49:11,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:49:11,217 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:49:11,222 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:49:11,223 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:49:11,223 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:49:11,224 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_6.c [2020-08-19 06:49:11,283 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef5485683/18e70ab445af42c982735b04a2aa8a35/FLAGf45024205 [2020-08-19 06:49:11,762 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:49:11,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_6.c [2020-08-19 06:49:11,771 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef5485683/18e70ab445af42c982735b04a2aa8a35/FLAGf45024205 [2020-08-19 06:49:12,138 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef5485683/18e70ab445af42c982735b04a2aa8a35 [2020-08-19 06:49:12,147 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:49:12,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:49:12,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:49:12,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:49:12,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:49:12,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:49:12" (1/1) ... [2020-08-19 06:49:12,157 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24cf129 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:12, skipping insertion in model container [2020-08-19 06:49:12,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:49:12" (1/1) ... [2020-08-19 06:49:12,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:49:12,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:49:12,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:49:12,361 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:49:12,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:49:12,406 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:49:12,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:12 WrapperNode [2020-08-19 06:49:12,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:49:12,408 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:49:12,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:49:12,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:49:12,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:12" (1/1) ... [2020-08-19 06:49:12,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:12" (1/1) ... [2020-08-19 06:49:12,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:12" (1/1) ... [2020-08-19 06:49:12,510 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:12" (1/1) ... [2020-08-19 06:49:12,516 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:12" (1/1) ... [2020-08-19 06:49:12,525 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:12" (1/1) ... [2020-08-19 06:49:12,528 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:12" (1/1) ... [2020-08-19 06:49:12,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:49:12,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:49:12,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:49:12,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:49:12,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:49:12,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:49:12,610 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:49:12,610 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:49:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:49:12,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:49:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:49:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:49:12,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:49:12,843 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:49:12,843 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 06:49:12,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:49:12 BoogieIcfgContainer [2020-08-19 06:49:12,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:49:12,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:49:12,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:49:12,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:49:12,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:49:12" (1/3) ... [2020-08-19 06:49:12,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458616e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:49:12, skipping insertion in model container [2020-08-19 06:49:12,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:49:12" (2/3) ... [2020-08-19 06:49:12,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@458616e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:49:12, skipping insertion in model container [2020-08-19 06:49:12,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:49:12" (3/3) ... [2020-08-19 06:49:12,856 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2020-08-19 06:49:12,866 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:49:12,874 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:49:12,890 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:49:12,916 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:49:12,917 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:49:12,917 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:49:12,917 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:49:12,918 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:49:12,918 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:49:12,918 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:49:12,919 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:49:12,946 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-19 06:49:12,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 06:49:12,955 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:12,956 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:49:12,957 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:12,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:12,966 INFO L82 PathProgramCache]: Analyzing trace with hash 429652513, now seen corresponding path program 1 times [2020-08-19 06:49:12,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:12,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888785245] [2020-08-19 06:49:12,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:13,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:13,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:13,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:13,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:13,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888785245] [2020-08-19 06:49:13,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:13,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:13,172 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032549869] [2020-08-19 06:49:13,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:13,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:13,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:13,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:13,193 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-08-19 06:49:13,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:13,262 INFO L93 Difference]: Finished difference Result 63 states and 102 transitions. [2020-08-19 06:49:13,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:13,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 06:49:13,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:13,276 INFO L225 Difference]: With dead ends: 63 [2020-08-19 06:49:13,277 INFO L226 Difference]: Without dead ends: 48 [2020-08-19 06:49:13,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:13,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-19 06:49:13,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 34. [2020-08-19 06:49:13,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-19 06:49:13,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 57 transitions. [2020-08-19 06:49:13,324 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 57 transitions. Word has length 16 [2020-08-19 06:49:13,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:13,324 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 57 transitions. [2020-08-19 06:49:13,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:13,325 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 57 transitions. [2020-08-19 06:49:13,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 06:49:13,326 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:13,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:49:13,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:49:13,327 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:13,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:13,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1109710883, now seen corresponding path program 1 times [2020-08-19 06:49:13,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:13,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669297110] [2020-08-19 06:49:13,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:13,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:13,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:13,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:13,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669297110] [2020-08-19 06:49:13,384 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:13,384 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:13,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471593920] [2020-08-19 06:49:13,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:13,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:13,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:13,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:13,387 INFO L87 Difference]: Start difference. First operand 34 states and 57 transitions. Second operand 3 states. [2020-08-19 06:49:13,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:13,421 INFO L93 Difference]: Finished difference Result 77 states and 132 transitions. [2020-08-19 06:49:13,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:13,421 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 06:49:13,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:13,423 INFO L225 Difference]: With dead ends: 77 [2020-08-19 06:49:13,423 INFO L226 Difference]: Without dead ends: 48 [2020-08-19 06:49:13,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:13,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-19 06:49:13,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-08-19 06:49:13,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-08-19 06:49:13,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 77 transitions. [2020-08-19 06:49:13,437 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 77 transitions. Word has length 16 [2020-08-19 06:49:13,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:13,437 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 77 transitions. [2020-08-19 06:49:13,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:13,438 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 77 transitions. [2020-08-19 06:49:13,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 06:49:13,439 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:13,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:49:13,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:49:13,440 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:13,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:13,440 INFO L82 PathProgramCache]: Analyzing trace with hash 434540691, now seen corresponding path program 1 times [2020-08-19 06:49:13,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:13,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586354440] [2020-08-19 06:49:13,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:13,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:13,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:13,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586354440] [2020-08-19 06:49:13,486 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:13,486 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:13,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654370239] [2020-08-19 06:49:13,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:13,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:13,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:13,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:13,489 INFO L87 Difference]: Start difference. First operand 46 states and 77 transitions. Second operand 3 states. [2020-08-19 06:49:13,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:13,512 INFO L93 Difference]: Finished difference Result 72 states and 117 transitions. [2020-08-19 06:49:13,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:13,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 06:49:13,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:13,514 INFO L225 Difference]: With dead ends: 72 [2020-08-19 06:49:13,515 INFO L226 Difference]: Without dead ends: 51 [2020-08-19 06:49:13,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:13,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-19 06:49:13,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-08-19 06:49:13,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-08-19 06:49:13,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 79 transitions. [2020-08-19 06:49:13,525 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 79 transitions. Word has length 17 [2020-08-19 06:49:13,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:13,529 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 79 transitions. [2020-08-19 06:49:13,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:13,530 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 79 transitions. [2020-08-19 06:49:13,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 06:49:13,531 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:13,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:49:13,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:49:13,532 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:13,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:13,532 INFO L82 PathProgramCache]: Analyzing trace with hash 41513681, now seen corresponding path program 1 times [2020-08-19 06:49:13,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:13,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [122564611] [2020-08-19 06:49:13,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:13,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:13,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:13,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [122564611] [2020-08-19 06:49:13,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:13,611 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:13,611 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448885254] [2020-08-19 06:49:13,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:13,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:13,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:13,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:13,615 INFO L87 Difference]: Start difference. First operand 49 states and 79 transitions. Second operand 3 states. [2020-08-19 06:49:13,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:13,639 INFO L93 Difference]: Finished difference Result 88 states and 144 transitions. [2020-08-19 06:49:13,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:13,640 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 06:49:13,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:13,642 INFO L225 Difference]: With dead ends: 88 [2020-08-19 06:49:13,642 INFO L226 Difference]: Without dead ends: 86 [2020-08-19 06:49:13,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:13,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-08-19 06:49:13,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 64. [2020-08-19 06:49:13,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-08-19 06:49:13,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 104 transitions. [2020-08-19 06:49:13,657 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 104 transitions. Word has length 17 [2020-08-19 06:49:13,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:13,658 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 104 transitions. [2020-08-19 06:49:13,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:13,661 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 104 transitions. [2020-08-19 06:49:13,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-19 06:49:13,662 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:13,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:49:13,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:49:13,663 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:13,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:13,664 INFO L82 PathProgramCache]: Analyzing trace with hash 721572051, now seen corresponding path program 1 times [2020-08-19 06:49:13,665 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:13,665 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273001800] [2020-08-19 06:49:13,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:13,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:13,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:13,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:13,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273001800] [2020-08-19 06:49:13,726 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:13,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:13,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470330887] [2020-08-19 06:49:13,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:13,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:13,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:13,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:13,728 INFO L87 Difference]: Start difference. First operand 64 states and 104 transitions. Second operand 3 states. [2020-08-19 06:49:13,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:13,754 INFO L93 Difference]: Finished difference Result 144 states and 238 transitions. [2020-08-19 06:49:13,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:13,755 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-08-19 06:49:13,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:13,756 INFO L225 Difference]: With dead ends: 144 [2020-08-19 06:49:13,756 INFO L226 Difference]: Without dead ends: 88 [2020-08-19 06:49:13,757 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:13,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-08-19 06:49:13,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-08-19 06:49:13,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-08-19 06:49:13,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 138 transitions. [2020-08-19 06:49:13,770 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 138 transitions. Word has length 17 [2020-08-19 06:49:13,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:13,770 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 138 transitions. [2020-08-19 06:49:13,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:13,770 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 138 transitions. [2020-08-19 06:49:13,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 06:49:13,772 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:13,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:49:13,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:49:13,772 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:13,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:13,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1287139128, now seen corresponding path program 1 times [2020-08-19 06:49:13,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:13,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083160620] [2020-08-19 06:49:13,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:13,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:13,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:13,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:13,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083160620] [2020-08-19 06:49:13,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:13,808 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:13,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333722578] [2020-08-19 06:49:13,808 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:13,809 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:13,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:13,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:13,810 INFO L87 Difference]: Start difference. First operand 86 states and 138 transitions. Second operand 3 states. [2020-08-19 06:49:13,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:13,833 INFO L93 Difference]: Finished difference Result 129 states and 205 transitions. [2020-08-19 06:49:13,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:13,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 06:49:13,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:13,835 INFO L225 Difference]: With dead ends: 129 [2020-08-19 06:49:13,835 INFO L226 Difference]: Without dead ends: 90 [2020-08-19 06:49:13,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:13,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-08-19 06:49:13,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-08-19 06:49:13,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-08-19 06:49:13,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 138 transitions. [2020-08-19 06:49:13,848 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 138 transitions. Word has length 18 [2020-08-19 06:49:13,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:13,849 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 138 transitions. [2020-08-19 06:49:13,849 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:13,849 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 138 transitions. [2020-08-19 06:49:13,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 06:49:13,851 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:13,851 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:49:13,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:49:13,851 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:13,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:13,852 INFO L82 PathProgramCache]: Analyzing trace with hash 894112118, now seen corresponding path program 1 times [2020-08-19 06:49:13,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:13,852 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1763607971] [2020-08-19 06:49:13,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:13,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:13,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:13,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:13,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1763607971] [2020-08-19 06:49:13,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:13,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:13,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876026505] [2020-08-19 06:49:13,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:13,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:13,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:13,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:13,885 INFO L87 Difference]: Start difference. First operand 88 states and 138 transitions. Second operand 3 states. [2020-08-19 06:49:13,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:13,904 INFO L93 Difference]: Finished difference Result 156 states and 248 transitions. [2020-08-19 06:49:13,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:13,905 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 06:49:13,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:13,907 INFO L225 Difference]: With dead ends: 156 [2020-08-19 06:49:13,907 INFO L226 Difference]: Without dead ends: 154 [2020-08-19 06:49:13,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:13,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-08-19 06:49:13,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 120. [2020-08-19 06:49:13,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-08-19 06:49:13,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 186 transitions. [2020-08-19 06:49:13,924 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 186 transitions. Word has length 18 [2020-08-19 06:49:13,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:13,937 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 186 transitions. [2020-08-19 06:49:13,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:13,937 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 186 transitions. [2020-08-19 06:49:13,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 06:49:13,938 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:13,939 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:49:13,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 06:49:13,939 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:13,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:13,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1574170488, now seen corresponding path program 1 times [2020-08-19 06:49:13,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:13,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747260040] [2020-08-19 06:49:13,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:13,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:13,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:13,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747260040] [2020-08-19 06:49:13,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:13,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:13,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421629445] [2020-08-19 06:49:13,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:13,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:13,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:13,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:13,975 INFO L87 Difference]: Start difference. First operand 120 states and 186 transitions. Second operand 3 states. [2020-08-19 06:49:13,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:13,996 INFO L93 Difference]: Finished difference Result 272 states and 424 transitions. [2020-08-19 06:49:13,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:13,997 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-08-19 06:49:13,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:13,999 INFO L225 Difference]: With dead ends: 272 [2020-08-19 06:49:13,999 INFO L226 Difference]: Without dead ends: 162 [2020-08-19 06:49:14,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:14,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-08-19 06:49:14,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2020-08-19 06:49:14,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-08-19 06:49:14,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 242 transitions. [2020-08-19 06:49:14,018 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 242 transitions. Word has length 18 [2020-08-19 06:49:14,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:14,018 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 242 transitions. [2020-08-19 06:49:14,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:14,018 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 242 transitions. [2020-08-19 06:49:14,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 06:49:14,020 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:14,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:49:14,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 06:49:14,021 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:14,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:14,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1947887240, now seen corresponding path program 1 times [2020-08-19 06:49:14,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:14,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [648860087] [2020-08-19 06:49:14,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:14,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:14,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:14,059 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [648860087] [2020-08-19 06:49:14,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:14,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:14,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435735468] [2020-08-19 06:49:14,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:14,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:14,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:14,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:14,062 INFO L87 Difference]: Start difference. First operand 160 states and 242 transitions. Second operand 3 states. [2020-08-19 06:49:14,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:14,081 INFO L93 Difference]: Finished difference Result 240 states and 360 transitions. [2020-08-19 06:49:14,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:14,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 06:49:14,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:14,083 INFO L225 Difference]: With dead ends: 240 [2020-08-19 06:49:14,083 INFO L226 Difference]: Without dead ends: 166 [2020-08-19 06:49:14,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:14,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-19 06:49:14,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2020-08-19 06:49:14,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-08-19 06:49:14,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 242 transitions. [2020-08-19 06:49:14,100 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 242 transitions. Word has length 19 [2020-08-19 06:49:14,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:14,100 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 242 transitions. [2020-08-19 06:49:14,100 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:14,101 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 242 transitions. [2020-08-19 06:49:14,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 06:49:14,102 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:14,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:49:14,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 06:49:14,103 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:14,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:14,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1554860230, now seen corresponding path program 1 times [2020-08-19 06:49:14,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:14,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304896785] [2020-08-19 06:49:14,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:14,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:14,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:14,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:14,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304896785] [2020-08-19 06:49:14,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:14,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:14,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652313579] [2020-08-19 06:49:14,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:14,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:14,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:14,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:14,136 INFO L87 Difference]: Start difference. First operand 164 states and 242 transitions. Second operand 3 states. [2020-08-19 06:49:14,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:14,160 INFO L93 Difference]: Finished difference Result 284 states and 424 transitions. [2020-08-19 06:49:14,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:14,161 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 06:49:14,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:14,163 INFO L225 Difference]: With dead ends: 284 [2020-08-19 06:49:14,163 INFO L226 Difference]: Without dead ends: 282 [2020-08-19 06:49:14,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:14,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-08-19 06:49:14,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 232. [2020-08-19 06:49:14,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-08-19 06:49:14,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 334 transitions. [2020-08-19 06:49:14,181 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 334 transitions. Word has length 19 [2020-08-19 06:49:14,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:14,181 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 334 transitions. [2020-08-19 06:49:14,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:14,181 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 334 transitions. [2020-08-19 06:49:14,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 06:49:14,183 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:14,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:49:14,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 06:49:14,184 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:14,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:14,184 INFO L82 PathProgramCache]: Analyzing trace with hash -2060048696, now seen corresponding path program 1 times [2020-08-19 06:49:14,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:14,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311796977] [2020-08-19 06:49:14,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:14,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:14,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:14,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311796977] [2020-08-19 06:49:14,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:14,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:14,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581063066] [2020-08-19 06:49:14,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:14,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:14,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:14,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:14,218 INFO L87 Difference]: Start difference. First operand 232 states and 334 transitions. Second operand 3 states. [2020-08-19 06:49:14,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:14,258 INFO L93 Difference]: Finished difference Result 524 states and 752 transitions. [2020-08-19 06:49:14,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:14,258 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-08-19 06:49:14,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:14,263 INFO L225 Difference]: With dead ends: 524 [2020-08-19 06:49:14,263 INFO L226 Difference]: Without dead ends: 306 [2020-08-19 06:49:14,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:14,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-08-19 06:49:14,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2020-08-19 06:49:14,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-08-19 06:49:14,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 422 transitions. [2020-08-19 06:49:14,310 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 422 transitions. Word has length 19 [2020-08-19 06:49:14,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:14,311 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 422 transitions. [2020-08-19 06:49:14,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:14,311 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 422 transitions. [2020-08-19 06:49:14,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 06:49:14,313 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:14,316 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] [2020-08-19 06:49:14,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 06:49:14,316 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:14,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:14,317 INFO L82 PathProgramCache]: Analyzing trace with hash 956242573, now seen corresponding path program 1 times [2020-08-19 06:49:14,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:14,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70284039] [2020-08-19 06:49:14,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:14,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:14,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:14,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70284039] [2020-08-19 06:49:14,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:14,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:14,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077399200] [2020-08-19 06:49:14,364 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:14,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:14,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:14,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:14,365 INFO L87 Difference]: Start difference. First operand 304 states and 422 transitions. Second operand 3 states. [2020-08-19 06:49:14,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:14,387 INFO L93 Difference]: Finished difference Result 456 states and 628 transitions. [2020-08-19 06:49:14,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:14,388 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-19 06:49:14,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:14,390 INFO L225 Difference]: With dead ends: 456 [2020-08-19 06:49:14,390 INFO L226 Difference]: Without dead ends: 314 [2020-08-19 06:49:14,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:14,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-08-19 06:49:14,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 312. [2020-08-19 06:49:14,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-08-19 06:49:14,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 422 transitions. [2020-08-19 06:49:14,416 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 422 transitions. Word has length 20 [2020-08-19 06:49:14,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:14,416 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 422 transitions. [2020-08-19 06:49:14,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:14,417 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 422 transitions. [2020-08-19 06:49:14,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 06:49:14,420 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:14,420 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] [2020-08-19 06:49:14,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 06:49:14,425 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:14,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:14,426 INFO L82 PathProgramCache]: Analyzing trace with hash 563215563, now seen corresponding path program 1 times [2020-08-19 06:49:14,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:14,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998603141] [2020-08-19 06:49:14,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:14,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:14,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:14,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:14,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:14,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998603141] [2020-08-19 06:49:14,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:14,484 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:14,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116760238] [2020-08-19 06:49:14,485 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:14,485 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:14,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:14,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:14,486 INFO L87 Difference]: Start difference. First operand 312 states and 422 transitions. Second operand 3 states. [2020-08-19 06:49:14,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:14,507 INFO L93 Difference]: Finished difference Result 524 states and 712 transitions. [2020-08-19 06:49:14,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:14,507 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-19 06:49:14,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:14,510 INFO L225 Difference]: With dead ends: 524 [2020-08-19 06:49:14,511 INFO L226 Difference]: Without dead ends: 522 [2020-08-19 06:49:14,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:14,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-08-19 06:49:14,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 456. [2020-08-19 06:49:14,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-08-19 06:49:14,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 598 transitions. [2020-08-19 06:49:14,528 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 598 transitions. Word has length 20 [2020-08-19 06:49:14,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:14,528 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 598 transitions. [2020-08-19 06:49:14,528 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:14,528 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 598 transitions. [2020-08-19 06:49:14,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 06:49:14,530 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:14,530 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] [2020-08-19 06:49:14,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 06:49:14,530 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:14,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:14,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1243273933, now seen corresponding path program 1 times [2020-08-19 06:49:14,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:14,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613143509] [2020-08-19 06:49:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:14,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:14,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:14,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613143509] [2020-08-19 06:49:14,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:14,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:14,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772925018] [2020-08-19 06:49:14,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:14,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:14,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:14,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:14,553 INFO L87 Difference]: Start difference. First operand 456 states and 598 transitions. Second operand 3 states. [2020-08-19 06:49:14,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:14,579 INFO L93 Difference]: Finished difference Result 1020 states and 1320 transitions. [2020-08-19 06:49:14,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:14,579 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-08-19 06:49:14,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:14,583 INFO L225 Difference]: With dead ends: 1020 [2020-08-19 06:49:14,583 INFO L226 Difference]: Without dead ends: 586 [2020-08-19 06:49:14,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:14,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-08-19 06:49:14,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 584. [2020-08-19 06:49:14,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-08-19 06:49:14,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 726 transitions. [2020-08-19 06:49:14,606 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 726 transitions. Word has length 20 [2020-08-19 06:49:14,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:14,606 INFO L479 AbstractCegarLoop]: Abstraction has 584 states and 726 transitions. [2020-08-19 06:49:14,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:14,607 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 726 transitions. [2020-08-19 06:49:14,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 06:49:14,608 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:14,608 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] [2020-08-19 06:49:14,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 06:49:14,609 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:14,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:14,609 INFO L82 PathProgramCache]: Analyzing trace with hash 280029309, now seen corresponding path program 1 times [2020-08-19 06:49:14,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:14,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805704352] [2020-08-19 06:49:14,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:14,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:14,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:14,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:14,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:14,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805704352] [2020-08-19 06:49:14,631 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:14,631 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:14,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415857824] [2020-08-19 06:49:14,632 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:14,632 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:14,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:14,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:14,633 INFO L87 Difference]: Start difference. First operand 584 states and 726 transitions. Second operand 3 states. [2020-08-19 06:49:14,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:14,662 INFO L93 Difference]: Finished difference Result 876 states and 1080 transitions. [2020-08-19 06:49:14,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:14,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-19 06:49:14,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:14,666 INFO L225 Difference]: With dead ends: 876 [2020-08-19 06:49:14,666 INFO L226 Difference]: Without dead ends: 602 [2020-08-19 06:49:14,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:14,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-08-19 06:49:14,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 600. [2020-08-19 06:49:14,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-08-19 06:49:14,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 726 transitions. [2020-08-19 06:49:14,692 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 726 transitions. Word has length 21 [2020-08-19 06:49:14,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:14,693 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 726 transitions. [2020-08-19 06:49:14,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:14,693 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 726 transitions. [2020-08-19 06:49:14,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 06:49:14,694 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:14,695 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] [2020-08-19 06:49:14,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 06:49:14,695 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:14,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:14,696 INFO L82 PathProgramCache]: Analyzing trace with hash -112997701, now seen corresponding path program 1 times [2020-08-19 06:49:14,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:14,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77903092] [2020-08-19 06:49:14,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:14,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:14,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:14,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77903092] [2020-08-19 06:49:14,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:14,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:14,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167756314] [2020-08-19 06:49:14,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:14,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:14,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:14,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:14,720 INFO L87 Difference]: Start difference. First operand 600 states and 726 transitions. Second operand 3 states. [2020-08-19 06:49:14,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:14,752 INFO L93 Difference]: Finished difference Result 970 states and 1159 transitions. [2020-08-19 06:49:14,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:14,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-19 06:49:14,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:14,758 INFO L225 Difference]: With dead ends: 970 [2020-08-19 06:49:14,758 INFO L226 Difference]: Without dead ends: 968 [2020-08-19 06:49:14,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:14,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-08-19 06:49:14,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 904. [2020-08-19 06:49:14,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-08-19 06:49:14,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1062 transitions. [2020-08-19 06:49:14,800 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1062 transitions. Word has length 21 [2020-08-19 06:49:14,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:14,800 INFO L479 AbstractCegarLoop]: Abstraction has 904 states and 1062 transitions. [2020-08-19 06:49:14,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:14,800 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1062 transitions. [2020-08-19 06:49:14,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 06:49:14,802 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:49:14,802 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] [2020-08-19 06:49:14,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-19 06:49:14,803 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:49:14,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:49:14,803 INFO L82 PathProgramCache]: Analyzing trace with hash 567060669, now seen corresponding path program 1 times [2020-08-19 06:49:14,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:49:14,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659812008] [2020-08-19 06:49:14,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:49:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:14,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:49:14,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:49:14,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:49:14,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659812008] [2020-08-19 06:49:14,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:49:14,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:49:14,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903539286] [2020-08-19 06:49:14,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:49:14,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:49:14,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:49:14,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:14,827 INFO L87 Difference]: Start difference. First operand 904 states and 1062 transitions. Second operand 3 states. [2020-08-19 06:49:14,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:49:14,865 INFO L93 Difference]: Finished difference Result 1992 states and 2278 transitions. [2020-08-19 06:49:14,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:49:14,866 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-08-19 06:49:14,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:49:14,866 INFO L225 Difference]: With dead ends: 1992 [2020-08-19 06:49:14,866 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 06:49:14,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:49:14,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 06:49:14,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 06:49:14,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 06:49:14,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 06:49:14,871 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-08-19 06:49:14,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:49:14,871 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 06:49:14,872 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:49:14,872 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 06:49:14,872 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 06:49:14,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-19 06:49:14,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 06:49:14,897 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-19 06:49:14,897 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 06:49:14,897 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 06:49:14,897 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 06:49:14,898 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 06:49:14,898 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 06:49:14,898 INFO L268 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-08-19 06:49:14,898 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 107) no Hoare annotation was computed. [2020-08-19 06:49:14,898 INFO L268 CegarLoopResult]: For program point L77-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 06:49:14,898 INFO L268 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2020-08-19 06:49:14,898 INFO L271 CegarLoopResult]: At program point L103(lines 5 107) the Hoare annotation is: true [2020-08-19 06:49:14,899 INFO L268 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-08-19 06:49:14,899 INFO L268 CegarLoopResult]: For program point L62-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 06:49:14,899 INFO L268 CegarLoopResult]: For program point L87-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 06:49:14,899 INFO L268 CegarLoopResult]: For program point L54-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 06:49:14,899 INFO L268 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-08-19 06:49:14,899 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 107) no Hoare annotation was computed. [2020-08-19 06:49:14,899 INFO L268 CegarLoopResult]: For program point L46-2(lines 27 102) no Hoare annotation was computed. [2020-08-19 06:49:14,900 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 105) no Hoare annotation was computed. [2020-08-19 06:49:14,900 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 107) the Hoare annotation is: true [2020-08-19 06:49:14,900 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-08-19 06:49:14,900 INFO L268 CegarLoopResult]: For program point L72-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 06:49:14,900 INFO L271 CegarLoopResult]: At program point L97-1(lines 27 102) the Hoare annotation is: true [2020-08-19 06:49:14,900 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-08-19 06:49:14,900 INFO L268 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-08-19 06:49:14,901 INFO L264 CegarLoopResult]: At program point L98-1(lines 5 107) the Hoare annotation is: false [2020-08-19 06:49:14,901 INFO L268 CegarLoopResult]: For program point L82-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 06:49:14,901 INFO L268 CegarLoopResult]: For program point L66-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 06:49:14,901 INFO L268 CegarLoopResult]: For program point L58-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 06:49:14,901 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-08-19 06:49:14,901 INFO L268 CegarLoopResult]: For program point L50-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 06:49:14,901 INFO L268 CegarLoopResult]: For program point L92-1(lines 27 102) no Hoare annotation was computed. [2020-08-19 06:49:14,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:49:14 BoogieIcfgContainer [2020-08-19 06:49:14,915 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:49:14,918 INFO L168 Benchmark]: Toolchain (without parser) took 2769.15 ms. Allocated memory was 143.1 MB in the beginning and 240.6 MB in the end (delta: 97.5 MB). Free memory was 106.0 MB in the beginning and 189.5 MB in the end (delta: -83.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-08-19 06:49:14,919 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 06:49:14,920 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.76 ms. Allocated memory is still 143.1 MB. Free memory was 105.6 MB in the beginning and 95.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-08-19 06:49:14,921 INFO L168 Benchmark]: Boogie Preprocessor took 122.03 ms. Allocated memory was 143.1 MB in the beginning and 205.0 MB in the end (delta: 61.9 MB). Free memory was 95.5 MB in the beginning and 183.2 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-19 06:49:14,922 INFO L168 Benchmark]: RCFGBuilder took 317.07 ms. Allocated memory is still 205.0 MB. Free memory was 182.6 MB in the beginning and 167.0 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. [2020-08-19 06:49:14,922 INFO L168 Benchmark]: TraceAbstraction took 2066.50 ms. Allocated memory was 205.0 MB in the beginning and 240.6 MB in the end (delta: 35.7 MB). Free memory was 166.3 MB in the beginning and 189.5 MB in the end (delta: -23.2 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-19 06:49:14,926 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 143.1 MB. Free memory was 124.7 MB in the beginning and 124.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 258.76 ms. Allocated memory is still 143.1 MB. Free memory was 105.6 MB in the beginning and 95.5 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.03 ms. Allocated memory was 143.1 MB in the beginning and 205.0 MB in the end (delta: 61.9 MB). Free memory was 95.5 MB in the beginning and 183.2 MB in the end (delta: -87.7 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 317.07 ms. Allocated memory is still 205.0 MB. Free memory was 182.6 MB in the beginning and 167.0 MB in the end (delta: 15.6 MB). Peak memory consumption was 15.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2066.50 ms. Allocated memory was 205.0 MB in the beginning and 240.6 MB in the end (delta: 35.7 MB). Free memory was 166.3 MB in the beginning and 189.5 MB in the end (delta: -23.2 MB). Peak memory consumption was 12.5 MB. 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: 1.9s, 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, 0.1s 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...