/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/id_i20_o20-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:57:15,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:57:15,583 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:57:15,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-19 01:57:15,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:57:15,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:57:15,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:57:15,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:57:15,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:57:15,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:57:15,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:57:15,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:57:15,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:57:15,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:57:15,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:57:15,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:57:15,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 01:57:15,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:57:15,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:57:15,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:57:15,651 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 01:57:15,680 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:57:15,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:57:15,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:57:15,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:57:15,682 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:57:15,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:57:15,682 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:57:15,683 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:57:15,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:57:15,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:57:15,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:57:15,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:57:15,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:57:15,684 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:57:15,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:57:15,684 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:57:15,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:57:15,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:57:15,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:57:15,685 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:57:15,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:57:15,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:57:15,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:57:15,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:57:15,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:57:15,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:57:15,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:57:15,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:57:15,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:57:15,687 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 01:57:16,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:57:16,019 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:57:16,023 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:57:16,025 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:57:16,025 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:57:16,026 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i20_o20-1.c [2020-08-19 01:57:16,093 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5273b867/32d2ba37c01e435a92443e0c480bc619/FLAG26fad1e55 [2020-08-19 01:57:16,552 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:57:16,552 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i20_o20-1.c [2020-08-19 01:57:16,557 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5273b867/32d2ba37c01e435a92443e0c480bc619/FLAG26fad1e55 [2020-08-19 01:57:16,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d5273b867/32d2ba37c01e435a92443e0c480bc619 [2020-08-19 01:57:16,950 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:57:16,952 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:57:16,953 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:57:16,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:57:16,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:57:16,958 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:57:16" (1/1) ... [2020-08-19 01:57:16,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45368341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:57:16, skipping insertion in model container [2020-08-19 01:57:16,962 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:57:16" (1/1) ... [2020-08-19 01:57:16,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:57:16,986 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:57:17,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:57:17,167 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:57:17,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:57:17,193 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:57:17,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:57:17 WrapperNode [2020-08-19 01:57:17,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:57:17,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:57:17,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:57:17,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:57:17,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:57:17" (1/1) ... [2020-08-19 01:57:17,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:57:17" (1/1) ... [2020-08-19 01:57:17,290 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:57:17" (1/1) ... [2020-08-19 01:57:17,290 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:57:17" (1/1) ... [2020-08-19 01:57:17,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:57:17" (1/1) ... [2020-08-19 01:57:17,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:57:17" (1/1) ... [2020-08-19 01:57:17,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:57:17" (1/1) ... [2020-08-19 01:57:17,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:57:17,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:57:17,299 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:57:17,299 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:57:17,300 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:57:17" (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 01:57:17,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:57:17,364 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:57:17,365 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-08-19 01:57:17,365 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:57:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 01:57:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:57:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-08-19 01:57:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:57:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:57:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:57:17,524 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:57:17,525 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-19 01:57:17,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:57:17 BoogieIcfgContainer [2020-08-19 01:57:17,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:57:17,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:57:17,530 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:57:17,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:57:17,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:57:16" (1/3) ... [2020-08-19 01:57:17,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d87c01b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:57:17, skipping insertion in model container [2020-08-19 01:57:17,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:57:17" (2/3) ... [2020-08-19 01:57:17,535 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d87c01b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:57:17, skipping insertion in model container [2020-08-19 01:57:17,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:57:17" (3/3) ... [2020-08-19 01:57:17,536 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i20_o20-1.c [2020-08-19 01:57:17,546 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:57:17,553 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:57:17,567 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:57:17,590 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:57:17,591 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:57:17,591 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:57:17,591 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:57:17,591 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:57:17,591 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:57:17,591 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:57:17,592 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:57:17,605 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-08-19 01:57:17,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-19 01:57:17,610 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:57:17,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:57:17,611 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:57:17,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:57:17,616 INFO L82 PathProgramCache]: Analyzing trace with hash -872342019, now seen corresponding path program 1 times [2020-08-19 01:57:17,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:57:17,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052957553] [2020-08-19 01:57:17,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:57:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:17,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:57:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:17,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:57:17,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:17,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 01:57:17,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052957553] [2020-08-19 01:57:17,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:57:17,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 01:57:17,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521534652] [2020-08-19 01:57:17,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 01:57:17,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:57:17,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 01:57:17,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:57:17,997 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2020-08-19 01:57:18,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:57:18,138 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-08-19 01:57:18,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 01:57:18,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-08-19 01:57:18,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:57:18,156 INFO L225 Difference]: With dead ends: 30 [2020-08-19 01:57:18,157 INFO L226 Difference]: Without dead ends: 18 [2020-08-19 01:57:18,161 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:57:18,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-08-19 01:57:18,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-08-19 01:57:18,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-08-19 01:57:18,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-08-19 01:57:18,223 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2020-08-19 01:57:18,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:57:18,224 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-08-19 01:57:18,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 01:57:18,224 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-08-19 01:57:18,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 01:57:18,231 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:57:18,231 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:57:18,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:57:18,232 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:57:18,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:57:18,233 INFO L82 PathProgramCache]: Analyzing trace with hash -953570577, now seen corresponding path program 1 times [2020-08-19 01:57:18,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:57:18,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235073719] [2020-08-19 01:57:18,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:57:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:18,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:57:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:18,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:57:18,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:18,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:18,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:18,381 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-19 01:57:18,381 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235073719] [2020-08-19 01:57:18,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:57:18,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 01:57:18,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808059316] [2020-08-19 01:57:18,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 01:57:18,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:57:18,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 01:57:18,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 01:57:18,386 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 6 states. [2020-08-19 01:57:18,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:57:18,448 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2020-08-19 01:57:18,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 01:57:18,449 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-08-19 01:57:18,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:57:18,450 INFO L225 Difference]: With dead ends: 25 [2020-08-19 01:57:18,450 INFO L226 Difference]: Without dead ends: 21 [2020-08-19 01:57:18,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:57:18,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-19 01:57:18,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-08-19 01:57:18,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-19 01:57:18,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-08-19 01:57:18,459 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2020-08-19 01:57:18,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:57:18,460 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-08-19 01:57:18,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 01:57:18,460 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-08-19 01:57:18,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 01:57:18,461 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:57:18,462 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:57:18,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:57:18,462 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:57:18,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:57:18,463 INFO L82 PathProgramCache]: Analyzing trace with hash 397359997, now seen corresponding path program 2 times [2020-08-19 01:57:18,463 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:57:18,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [949009111] [2020-08-19 01:57:18,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:57:18,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:18,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:57:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:18,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:57:18,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:18,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:18,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:18,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:18,621 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-19 01:57:18,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [949009111] [2020-08-19 01:57:18,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:57:18,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 01:57:18,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425733259] [2020-08-19 01:57:18,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 01:57:18,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:57:18,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 01:57:18,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-19 01:57:18,625 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 7 states. [2020-08-19 01:57:18,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:57:18,734 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-08-19 01:57:18,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 01:57:18,735 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-08-19 01:57:18,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:57:18,736 INFO L225 Difference]: With dead ends: 28 [2020-08-19 01:57:18,737 INFO L226 Difference]: Without dead ends: 24 [2020-08-19 01:57:18,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:57:18,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-08-19 01:57:18,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-08-19 01:57:18,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-19 01:57:18,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-08-19 01:57:18,745 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 25 [2020-08-19 01:57:18,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:57:18,746 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-08-19 01:57:18,746 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 01:57:18,746 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-08-19 01:57:18,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-19 01:57:18,747 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:57:18,747 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:57:18,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 01:57:18,748 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:57:18,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:57:18,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1198310127, now seen corresponding path program 3 times [2020-08-19 01:57:18,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:57:18,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75917863] [2020-08-19 01:57:18,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:57:18,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:18,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:57:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:18,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:57:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:18,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:18,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:18,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:18,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:18,920 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-19 01:57:18,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75917863] [2020-08-19 01:57:18,921 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:57:18,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 01:57:18,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922660484] [2020-08-19 01:57:18,923 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 01:57:18,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:57:18,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 01:57:18,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-08-19 01:57:18,924 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 8 states. [2020-08-19 01:57:19,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:57:19,016 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-08-19 01:57:19,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 01:57:19,017 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-08-19 01:57:19,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:57:19,019 INFO L225 Difference]: With dead ends: 31 [2020-08-19 01:57:19,019 INFO L226 Difference]: Without dead ends: 27 [2020-08-19 01:57:19,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:57:19,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-19 01:57:19,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-08-19 01:57:19,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-19 01:57:19,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-08-19 01:57:19,027 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 31 [2020-08-19 01:57:19,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:57:19,027 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-08-19 01:57:19,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 01:57:19,028 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-08-19 01:57:19,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-19 01:57:19,029 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:57:19,030 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:57:19,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 01:57:19,030 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:57:19,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:57:19,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1080764669, now seen corresponding path program 4 times [2020-08-19 01:57:19,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:57:19,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [922136630] [2020-08-19 01:57:19,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:57:19,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:19,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:57:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:19,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:57:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:19,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:19,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:19,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:19,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:19,205 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-19 01:57:19,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [922136630] [2020-08-19 01:57:19,206 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:57:19,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 01:57:19,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745735764] [2020-08-19 01:57:19,207 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 01:57:19,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:57:19,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 01:57:19,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-19 01:57:19,208 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 9 states. [2020-08-19 01:57:19,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:57:19,295 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-08-19 01:57:19,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 01:57:19,295 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-08-19 01:57:19,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:57:19,297 INFO L225 Difference]: With dead ends: 34 [2020-08-19 01:57:19,297 INFO L226 Difference]: Without dead ends: 30 [2020-08-19 01:57:19,298 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:57:19,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-19 01:57:19,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-08-19 01:57:19,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-19 01:57:19,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-08-19 01:57:19,305 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 37 [2020-08-19 01:57:19,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:57:19,305 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-08-19 01:57:19,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 01:57:19,306 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-08-19 01:57:19,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-08-19 01:57:19,307 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:57:19,307 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:57:19,308 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 01:57:19,308 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:57:19,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:57:19,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1752970513, now seen corresponding path program 5 times [2020-08-19 01:57:19,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:57:19,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786301506] [2020-08-19 01:57:19,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:57:19,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:19,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:57:19,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:19,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:57:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:19,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:19,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:19,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:19,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:19,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:19,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:19,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:19,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:19,517 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-08-19 01:57:19,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786301506] [2020-08-19 01:57:19,518 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:57:19,518 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 01:57:19,518 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145820888] [2020-08-19 01:57:19,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 01:57:19,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:57:19,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 01:57:19,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-19 01:57:19,520 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 10 states. [2020-08-19 01:57:19,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:57:19,628 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-08-19 01:57:19,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 01:57:19,629 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 43 [2020-08-19 01:57:19,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:57:19,630 INFO L225 Difference]: With dead ends: 37 [2020-08-19 01:57:19,630 INFO L226 Difference]: Without dead ends: 33 [2020-08-19 01:57:19,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:57:19,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-19 01:57:19,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-08-19 01:57:19,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-19 01:57:19,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-08-19 01:57:19,643 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 43 [2020-08-19 01:57:19,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:57:19,644 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-08-19 01:57:19,644 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 01:57:19,645 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-08-19 01:57:19,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-19 01:57:19,649 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:57:19,649 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:57:19,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 01:57:19,650 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:57:19,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:57:19,650 INFO L82 PathProgramCache]: Analyzing trace with hash -1590630787, now seen corresponding path program 6 times [2020-08-19 01:57:19,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:57:19,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [777394830] [2020-08-19 01:57:19,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:57:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:19,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:57:19,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:19,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:57:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:19,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:19,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:19,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:19,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:19,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:19,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:19,870 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-08-19 01:57:19,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [777394830] [2020-08-19 01:57:19,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:57:19,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 01:57:19,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321892272] [2020-08-19 01:57:19,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 01:57:19,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:57:19,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 01:57:19,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-08-19 01:57:19,874 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2020-08-19 01:57:19,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:57:19,986 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-08-19 01:57:19,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 01:57:19,987 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-08-19 01:57:19,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:57:19,988 INFO L225 Difference]: With dead ends: 40 [2020-08-19 01:57:19,988 INFO L226 Difference]: Without dead ends: 36 [2020-08-19 01:57:19,989 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:57:19,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-19 01:57:19,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-08-19 01:57:19,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-08-19 01:57:19,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-08-19 01:57:19,996 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 49 [2020-08-19 01:57:19,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:57:19,996 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-08-19 01:57:19,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 01:57:19,996 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-08-19 01:57:19,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-19 01:57:19,998 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:57:19,998 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:57:19,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 01:57:19,998 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:57:19,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:57:19,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1532150511, now seen corresponding path program 7 times [2020-08-19 01:57:19,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:57:19,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451413877] [2020-08-19 01:57:19,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:57:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:57:20,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:57:20,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:20,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:20,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:20,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,210 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-08-19 01:57:20,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451413877] [2020-08-19 01:57:20,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:57:20,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 01:57:20,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180971722] [2020-08-19 01:57:20,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 01:57:20,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:57:20,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 01:57:20,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-08-19 01:57:20,213 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 12 states. [2020-08-19 01:57:20,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:57:20,345 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-08-19 01:57:20,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 01:57:20,345 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-08-19 01:57:20,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:57:20,347 INFO L225 Difference]: With dead ends: 43 [2020-08-19 01:57:20,347 INFO L226 Difference]: Without dead ends: 39 [2020-08-19 01:57:20,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2020-08-19 01:57:20,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-19 01:57:20,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-08-19 01:57:20,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-19 01:57:20,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-08-19 01:57:20,355 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 55 [2020-08-19 01:57:20,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:57:20,355 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-08-19 01:57:20,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 01:57:20,355 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-08-19 01:57:20,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-19 01:57:20,356 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:57:20,357 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:57:20,357 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 01:57:20,357 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:57:20,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:57:20,357 INFO L82 PathProgramCache]: Analyzing trace with hash 1140618237, now seen corresponding path program 8 times [2020-08-19 01:57:20,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:57:20,358 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351770255] [2020-08-19 01:57:20,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:57:20,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:57:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:57:20,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:20,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:20,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:20,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:20,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:20,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:20,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,619 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-08-19 01:57:20,620 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351770255] [2020-08-19 01:57:20,620 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:57:20,620 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 01:57:20,620 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582430467] [2020-08-19 01:57:20,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 01:57:20,621 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:57:20,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 01:57:20,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-08-19 01:57:20,622 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 13 states. [2020-08-19 01:57:20,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:57:20,759 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-08-19 01:57:20,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 01:57:20,759 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 61 [2020-08-19 01:57:20,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:57:20,761 INFO L225 Difference]: With dead ends: 46 [2020-08-19 01:57:20,761 INFO L226 Difference]: Without dead ends: 42 [2020-08-19 01:57:20,762 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2020-08-19 01:57:20,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-19 01:57:20,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-08-19 01:57:20,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-19 01:57:20,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-08-19 01:57:20,769 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 61 [2020-08-19 01:57:20,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:57:20,770 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-08-19 01:57:20,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 01:57:20,770 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-08-19 01:57:20,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-08-19 01:57:20,771 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:57:20,772 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:57:20,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 01:57:20,772 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:57:20,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:57:20,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1749177617, now seen corresponding path program 9 times [2020-08-19 01:57:20,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:57:20,773 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158545781] [2020-08-19 01:57:20,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:57:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:57:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:57:20,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:20,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:20,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:20,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:21,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:21,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:21,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:21,067 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 126 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-08-19 01:57:21,068 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158545781] [2020-08-19 01:57:21,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:57:21,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 01:57:21,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121536745] [2020-08-19 01:57:21,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 01:57:21,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:57:21,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 01:57:21,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-08-19 01:57:21,071 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 14 states. [2020-08-19 01:57:21,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:57:21,231 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-08-19 01:57:21,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 01:57:21,232 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 67 [2020-08-19 01:57:21,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:57:21,233 INFO L225 Difference]: With dead ends: 49 [2020-08-19 01:57:21,233 INFO L226 Difference]: Without dead ends: 45 [2020-08-19 01:57:21,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=200, Invalid=352, Unknown=0, NotChecked=0, Total=552 [2020-08-19 01:57:21,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-08-19 01:57:21,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-08-19 01:57:21,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-08-19 01:57:21,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-08-19 01:57:21,240 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 67 [2020-08-19 01:57:21,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:57:21,240 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-08-19 01:57:21,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 01:57:21,241 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-08-19 01:57:21,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-08-19 01:57:21,242 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:57:21,242 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:57:21,242 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 01:57:21,242 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:57:21,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:57:21,243 INFO L82 PathProgramCache]: Analyzing trace with hash -1580609155, now seen corresponding path program 10 times [2020-08-19 01:57:21,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:57:21,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506406727] [2020-08-19 01:57:21,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:57:21,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:21,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:57:21,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:21,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:57:21,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:21,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:21,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:21,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:21,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:21,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:21,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:21,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:21,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:21,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:21,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:21,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:21,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:21,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:21,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:21,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:21,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:21,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:21,566 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-08-19 01:57:21,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506406727] [2020-08-19 01:57:21,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:57:21,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 01:57:21,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541958837] [2020-08-19 01:57:21,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 01:57:21,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:57:21,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 01:57:21,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-08-19 01:57:21,569 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 15 states. [2020-08-19 01:57:21,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:57:21,723 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-08-19 01:57:21,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 01:57:21,724 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 73 [2020-08-19 01:57:21,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:57:21,725 INFO L225 Difference]: With dead ends: 52 [2020-08-19 01:57:21,726 INFO L226 Difference]: Without dead ends: 48 [2020-08-19 01:57:21,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=236, Invalid=414, Unknown=0, NotChecked=0, Total=650 [2020-08-19 01:57:21,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-19 01:57:21,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-08-19 01:57:21,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-08-19 01:57:21,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-08-19 01:57:21,733 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 73 [2020-08-19 01:57:21,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:57:21,733 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-08-19 01:57:21,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 01:57:21,734 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-08-19 01:57:21,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-08-19 01:57:21,736 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:57:21,737 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:57:21,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 01:57:21,737 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:57:21,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:57:21,738 INFO L82 PathProgramCache]: Analyzing trace with hash -223837457, now seen corresponding path program 11 times [2020-08-19 01:57:21,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:57:21,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690171370] [2020-08-19 01:57:21,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:57:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:21,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:57:21,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:21,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:57:21,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:21,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:21,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:21,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:21,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:21,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:21,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:22,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:22,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:22,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:22,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:22,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:22,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:22,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:22,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:22,233 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-08-19 01:57:22,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690171370] [2020-08-19 01:57:22,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:57:22,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 01:57:22,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531066347] [2020-08-19 01:57:22,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 01:57:22,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:57:22,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 01:57:22,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-08-19 01:57:22,237 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 16 states. [2020-08-19 01:57:22,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:57:22,452 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-08-19 01:57:22,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 01:57:22,453 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 79 [2020-08-19 01:57:22,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:57:22,454 INFO L225 Difference]: With dead ends: 55 [2020-08-19 01:57:22,454 INFO L226 Difference]: Without dead ends: 51 [2020-08-19 01:57:22,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=275, Invalid=481, Unknown=0, NotChecked=0, Total=756 [2020-08-19 01:57:22,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-19 01:57:22,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-08-19 01:57:22,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-08-19 01:57:22,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-08-19 01:57:22,462 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 79 [2020-08-19 01:57:22,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:57:22,462 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-08-19 01:57:22,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 01:57:22,462 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-08-19 01:57:22,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-08-19 01:57:22,463 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:57:22,463 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:57:22,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 01:57:22,464 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:57:22,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:57:22,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1653931773, now seen corresponding path program 12 times [2020-08-19 01:57:22,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:57:22,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [869755590] [2020-08-19 01:57:22,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:57:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:22,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:57:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:22,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:57:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:22,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:22,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:22,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:22,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:22,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:22,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:22,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:22,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:22,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:22,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:22,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:22,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:22,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:22,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:22,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:22,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:22,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:22,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:22,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:22,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:22,917 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 0 proven. 222 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-08-19 01:57:22,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [869755590] [2020-08-19 01:57:22,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:57:22,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-19 01:57:22,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253756795] [2020-08-19 01:57:22,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-19 01:57:22,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:57:22,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-19 01:57:22,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-08-19 01:57:22,919 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 17 states. [2020-08-19 01:57:23,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:57:23,096 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2020-08-19 01:57:23,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 01:57:23,097 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 85 [2020-08-19 01:57:23,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:57:23,098 INFO L225 Difference]: With dead ends: 58 [2020-08-19 01:57:23,098 INFO L226 Difference]: Without dead ends: 54 [2020-08-19 01:57:23,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=317, Invalid=553, Unknown=0, NotChecked=0, Total=870 [2020-08-19 01:57:23,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-19 01:57:23,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-08-19 01:57:23,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-19 01:57:23,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-08-19 01:57:23,107 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 85 [2020-08-19 01:57:23,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:57:23,107 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-08-19 01:57:23,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-19 01:57:23,108 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-08-19 01:57:23,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-08-19 01:57:23,109 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:57:23,109 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:57:23,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 01:57:23,109 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:57:23,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:57:23,110 INFO L82 PathProgramCache]: Analyzing trace with hash -218674449, now seen corresponding path program 13 times [2020-08-19 01:57:23,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:57:23,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627268049] [2020-08-19 01:57:23,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:57:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:23,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:57:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:23,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:57:23,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:23,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:23,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:23,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:23,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:23,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:23,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:23,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:23,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:23,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:23,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:23,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:23,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:23,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:23,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:23,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:23,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:23,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:23,596 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 0 proven. 260 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-08-19 01:57:23,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627268049] [2020-08-19 01:57:23,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:57:23,597 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-19 01:57:23,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170067867] [2020-08-19 01:57:23,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-19 01:57:23,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:57:23,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-19 01:57:23,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-08-19 01:57:23,599 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 18 states. [2020-08-19 01:57:23,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:57:23,802 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-08-19 01:57:23,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 01:57:23,802 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 91 [2020-08-19 01:57:23,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:57:23,804 INFO L225 Difference]: With dead ends: 61 [2020-08-19 01:57:23,804 INFO L226 Difference]: Without dead ends: 57 [2020-08-19 01:57:23,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=362, Invalid=630, Unknown=0, NotChecked=0, Total=992 [2020-08-19 01:57:23,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-19 01:57:23,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-08-19 01:57:23,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-08-19 01:57:23,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2020-08-19 01:57:23,820 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 91 [2020-08-19 01:57:23,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:57:23,821 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2020-08-19 01:57:23,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-19 01:57:23,821 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2020-08-19 01:57:23,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-08-19 01:57:23,822 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:57:23,823 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:57:23,823 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 01:57:23,823 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:57:23,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:57:23,823 INFO L82 PathProgramCache]: Analyzing trace with hash 492436605, now seen corresponding path program 14 times [2020-08-19 01:57:23,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:57:23,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561358180] [2020-08-19 01:57:23,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:57:23,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:23,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:57:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:23,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:57:23,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:23,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:23,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:23,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:23,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:23,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:24,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:24,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:24,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:24,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:24,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:24,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:24,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:24,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:24,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:24,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:24,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:24,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:24,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:24,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:24,393 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-08-19 01:57:24,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561358180] [2020-08-19 01:57:24,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:57:24,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 01:57:24,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107567451] [2020-08-19 01:57:24,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 01:57:24,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:57:24,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 01:57:24,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=202, Unknown=0, NotChecked=0, Total=342 [2020-08-19 01:57:24,396 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 19 states. [2020-08-19 01:57:24,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:57:24,603 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-08-19 01:57:24,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-19 01:57:24,606 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 97 [2020-08-19 01:57:24,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:57:24,608 INFO L225 Difference]: With dead ends: 64 [2020-08-19 01:57:24,608 INFO L226 Difference]: Without dead ends: 60 [2020-08-19 01:57:24,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=410, Invalid=712, Unknown=0, NotChecked=0, Total=1122 [2020-08-19 01:57:24,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-19 01:57:24,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-08-19 01:57:24,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-19 01:57:24,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-08-19 01:57:24,615 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 97 [2020-08-19 01:57:24,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:57:24,616 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-08-19 01:57:24,616 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 01:57:24,616 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-08-19 01:57:24,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-08-19 01:57:24,617 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:57:24,617 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:57:24,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 01:57:24,618 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:57:24,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:57:24,618 INFO L82 PathProgramCache]: Analyzing trace with hash 1083048687, now seen corresponding path program 15 times [2020-08-19 01:57:24,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:57:24,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167664978] [2020-08-19 01:57:24,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:57:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:24,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:57:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:24,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:57:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:24,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:24,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:24,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:24,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:24,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:24,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:24,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:24,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:24,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:24,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:24,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:24,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:25,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:25,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:25,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:25,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:25,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:25,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:25,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:25,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:25,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:25,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:25,254 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 0 proven. 345 refuted. 0 times theorem prover too weak. 345 trivial. 0 not checked. [2020-08-19 01:57:25,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167664978] [2020-08-19 01:57:25,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:57:25,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-08-19 01:57:25,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657245709] [2020-08-19 01:57:25,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-19 01:57:25,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:57:25,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-19 01:57:25,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=223, Unknown=0, NotChecked=0, Total=380 [2020-08-19 01:57:25,259 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 20 states. [2020-08-19 01:57:25,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:57:25,494 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-08-19 01:57:25,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-19 01:57:25,495 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 103 [2020-08-19 01:57:25,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:57:25,496 INFO L225 Difference]: With dead ends: 67 [2020-08-19 01:57:25,496 INFO L226 Difference]: Without dead ends: 63 [2020-08-19 01:57:25,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=461, Invalid=799, Unknown=0, NotChecked=0, Total=1260 [2020-08-19 01:57:25,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-08-19 01:57:25,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-08-19 01:57:25,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-08-19 01:57:25,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-08-19 01:57:25,504 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 103 [2020-08-19 01:57:25,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:57:25,504 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-08-19 01:57:25,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-19 01:57:25,505 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-08-19 01:57:25,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-19 01:57:25,506 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:57:25,506 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:57:25,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-19 01:57:25,507 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:57:25,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:57:25,507 INFO L82 PathProgramCache]: Analyzing trace with hash 404015613, now seen corresponding path program 16 times [2020-08-19 01:57:25,508 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:57:25,508 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [405193624] [2020-08-19 01:57:25,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:57:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:25,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:57:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:25,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:57:25,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:25,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:25,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:25,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:25,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:25,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:25,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:25,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:25,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:25,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:25,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:25,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:25,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:25,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:25,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:25,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:25,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:25,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:25,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:25,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:26,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:26,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:26,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:26,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:26,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:26,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:26,259 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-08-19 01:57:26,259 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [405193624] [2020-08-19 01:57:26,259 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:57:26,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-19 01:57:26,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303508529] [2020-08-19 01:57:26,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-19 01:57:26,260 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:57:26,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-19 01:57:26,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2020-08-19 01:57:26,261 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 21 states. [2020-08-19 01:57:26,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:57:26,515 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2020-08-19 01:57:26,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 01:57:26,516 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 109 [2020-08-19 01:57:26,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:57:26,517 INFO L225 Difference]: With dead ends: 70 [2020-08-19 01:57:26,517 INFO L226 Difference]: Without dead ends: 66 [2020-08-19 01:57:26,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=515, Invalid=891, Unknown=0, NotChecked=0, Total=1406 [2020-08-19 01:57:26,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-08-19 01:57:26,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-08-19 01:57:26,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-08-19 01:57:26,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-08-19 01:57:26,524 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 109 [2020-08-19 01:57:26,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:57:26,525 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-08-19 01:57:26,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-19 01:57:26,525 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-08-19 01:57:26,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-08-19 01:57:26,527 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:57:26,527 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:57:26,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-19 01:57:26,528 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:57:26,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:57:26,528 INFO L82 PathProgramCache]: Analyzing trace with hash -464475409, now seen corresponding path program 17 times [2020-08-19 01:57:26,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:57:26,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [505806684] [2020-08-19 01:57:26,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:57:26,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:26,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:57:26,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:26,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:57:26,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:26,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:26,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:26,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:26,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:26,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:26,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:26,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:26,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:26,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:26,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:26,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:26,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:26,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:26,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:26,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:26,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:26,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:26,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:27,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:27,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:27,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:27,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:27,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:27,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:27,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:27,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:27,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:27,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:27,245 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 442 trivial. 0 not checked. [2020-08-19 01:57:27,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [505806684] [2020-08-19 01:57:27,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:57:27,246 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-08-19 01:57:27,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61327324] [2020-08-19 01:57:27,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-08-19 01:57:27,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:57:27,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-08-19 01:57:27,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=268, Unknown=0, NotChecked=0, Total=462 [2020-08-19 01:57:27,248 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 22 states. [2020-08-19 01:57:27,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:57:27,540 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2020-08-19 01:57:27,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 01:57:27,541 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 115 [2020-08-19 01:57:27,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:57:27,542 INFO L225 Difference]: With dead ends: 73 [2020-08-19 01:57:27,542 INFO L226 Difference]: Without dead ends: 69 [2020-08-19 01:57:27,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 289 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=572, Invalid=988, Unknown=0, NotChecked=0, Total=1560 [2020-08-19 01:57:27,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-19 01:57:27,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-19 01:57:27,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-19 01:57:27,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2020-08-19 01:57:27,548 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 115 [2020-08-19 01:57:27,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:57:27,548 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2020-08-19 01:57:27,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-08-19 01:57:27,549 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2020-08-19 01:57:27,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-08-19 01:57:27,550 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:57:27,550 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:57:27,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-19 01:57:27,551 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:57:27,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:57:27,551 INFO L82 PathProgramCache]: Analyzing trace with hash 130115453, now seen corresponding path program 18 times [2020-08-19 01:57:27,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:57:27,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979409783] [2020-08-19 01:57:27,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:57:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:27,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:57:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:27,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:57:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:27,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:27,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:27,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:27,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:27,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:27,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:27,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:27,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:27,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:27,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:27,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:28,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:28,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:28,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:28,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:28,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:28,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:28,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:28,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:28,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:28,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:28,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:28,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:28,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:28,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:28,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:28,514 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 495 refuted. 0 times theorem prover too weak. 495 trivial. 0 not checked. [2020-08-19 01:57:28,514 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979409783] [2020-08-19 01:57:28,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:57:28,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-19 01:57:28,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764137105] [2020-08-19 01:57:28,516 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-19 01:57:28,516 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:57:28,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-19 01:57:28,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=292, Unknown=0, NotChecked=0, Total=506 [2020-08-19 01:57:28,517 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 23 states. [2020-08-19 01:57:28,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:57:28,816 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-08-19 01:57:28,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 01:57:28,816 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 121 [2020-08-19 01:57:28,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:57:28,818 INFO L225 Difference]: With dead ends: 76 [2020-08-19 01:57:28,818 INFO L226 Difference]: Without dead ends: 72 [2020-08-19 01:57:28,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=632, Invalid=1090, Unknown=0, NotChecked=0, Total=1722 [2020-08-19 01:57:28,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-08-19 01:57:28,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-08-19 01:57:28,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-08-19 01:57:28,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2020-08-19 01:57:28,824 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 121 [2020-08-19 01:57:28,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:57:28,825 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2020-08-19 01:57:28,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-19 01:57:28,825 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2020-08-19 01:57:28,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-08-19 01:57:28,827 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:57:28,827 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:57:28,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-19 01:57:28,827 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:57:28,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:57:28,828 INFO L82 PathProgramCache]: Analyzing trace with hash -2010955025, now seen corresponding path program 19 times [2020-08-19 01:57:28,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:57:28,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605898048] [2020-08-19 01:57:28,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:57:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:28,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:57:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:28,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:57:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:28,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:28,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:29,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:29,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:29,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:29,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:29,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:29,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:29,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:29,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:29,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:29,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:29,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:29,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:29,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:29,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:29,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:29,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:29,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:29,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:29,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:29,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:29,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:29,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:29,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:29,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:29,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:29,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:29,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:29,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:29,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 0 proven. 551 refuted. 0 times theorem prover too weak. 551 trivial. 0 not checked. [2020-08-19 01:57:29,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605898048] [2020-08-19 01:57:29,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:57:29,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-08-19 01:57:29,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052391124] [2020-08-19 01:57:29,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-08-19 01:57:29,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:57:29,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-08-19 01:57:29,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=317, Unknown=0, NotChecked=0, Total=552 [2020-08-19 01:57:29,801 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand 24 states. [2020-08-19 01:57:30,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:57:30,199 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-08-19 01:57:30,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 01:57:30,200 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 127 [2020-08-19 01:57:30,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:57:30,201 INFO L225 Difference]: With dead ends: 79 [2020-08-19 01:57:30,202 INFO L226 Difference]: Without dead ends: 75 [2020-08-19 01:57:30,203 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 361 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=695, Invalid=1197, Unknown=0, NotChecked=0, Total=1892 [2020-08-19 01:57:30,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-08-19 01:57:30,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-08-19 01:57:30,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-08-19 01:57:30,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-08-19 01:57:30,209 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 127 [2020-08-19 01:57:30,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:57:30,210 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-08-19 01:57:30,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-08-19 01:57:30,210 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-08-19 01:57:30,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-08-19 01:57:30,211 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:57:30,211 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:57:30,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-19 01:57:30,211 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:57:30,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:57:30,211 INFO L82 PathProgramCache]: Analyzing trace with hash -799288067, now seen corresponding path program 20 times [2020-08-19 01:57:30,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:57:30,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535121576] [2020-08-19 01:57:30,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:57:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:30,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:57:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:30,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:57:30,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:30,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:30,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:30,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:30,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:30,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:30,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:30,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:30,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:30,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:31,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:31,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:31,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:31,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:31,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:31,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:31,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:31,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:31,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:31,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:31,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:31,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:31,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:31,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:31,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:31,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:31,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:32,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:32,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:32,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:32,528 INFO L134 CoverageAnalysis]: Checked inductivity of 1220 backedges. 0 proven. 610 refuted. 0 times theorem prover too weak. 610 trivial. 0 not checked. [2020-08-19 01:57:32,529 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535121576] [2020-08-19 01:57:32,529 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:57:32,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-08-19 01:57:32,529 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094524605] [2020-08-19 01:57:32,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-08-19 01:57:32,530 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:57:32,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-08-19 01:57:32,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2020-08-19 01:57:32,532 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 45 states. [2020-08-19 01:57:33,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:57:33,456 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2020-08-19 01:57:33,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-19 01:57:33,457 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 133 [2020-08-19 01:57:33,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:57:33,459 INFO L225 Difference]: With dead ends: 82 [2020-08-19 01:57:33,459 INFO L226 Difference]: Without dead ends: 78 [2020-08-19 01:57:33,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=87, Invalid=1893, Unknown=0, NotChecked=0, Total=1980 [2020-08-19 01:57:33,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-08-19 01:57:33,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-08-19 01:57:33,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-08-19 01:57:33,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-08-19 01:57:33,465 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 133 [2020-08-19 01:57:33,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:57:33,466 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-08-19 01:57:33,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-08-19 01:57:33,466 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-08-19 01:57:33,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-08-19 01:57:33,467 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:57:33,468 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:57:33,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-19 01:57:33,468 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:57:33,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:57:33,468 INFO L82 PathProgramCache]: Analyzing trace with hash -1226192145, now seen corresponding path program 21 times [2020-08-19 01:57:33,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:57:33,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067521352] [2020-08-19 01:57:33,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:57:33,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:33,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:57:33,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:33,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-19 01:57:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:33,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:33,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:33,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:33,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:33,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:33,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:33,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:33,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:33,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:33,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:33,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:33,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:33,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:33,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:33,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:33,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:33,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:34,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:34,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:34,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:34,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:34,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:34,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:34,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:34,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:34,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:34,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:34,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:34,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:34,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:34,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-19 01:57:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:57:34,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 630 proven. 42 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2020-08-19 01:57:34,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067521352] [2020-08-19 01:57:34,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 01:57:34,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-08-19 01:57:34,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542740206] [2020-08-19 01:57:34,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-08-19 01:57:34,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:57:34,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-08-19 01:57:34,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=391, Unknown=0, NotChecked=0, Total=650 [2020-08-19 01:57:34,570 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 26 states. [2020-08-19 01:57:36,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:57:36,177 INFO L93 Difference]: Finished difference Result 197 states and 638 transitions. [2020-08-19 01:57:36,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-08-19 01:57:36,181 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 139 [2020-08-19 01:57:36,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:57:36,182 INFO L225 Difference]: With dead ends: 197 [2020-08-19 01:57:36,182 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 01:57:36,186 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=767, Invalid=1489, Unknown=0, NotChecked=0, Total=2256 [2020-08-19 01:57:36,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 01:57:36,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 01:57:36,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 01:57:36,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 01:57:36,189 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 139 [2020-08-19 01:57:36,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:57:36,189 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 01:57:36,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-08-19 01:57:36,189 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 01:57:36,189 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 01:57:36,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-19 01:57:36,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 01:57:36,374 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 3 [2020-08-19 01:57:36,378 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-19 01:57:36,378 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 01:57:36,378 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 01:57:36,379 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 01:57:36,379 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 01:57:36,379 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 01:57:36,380 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-08-19 01:57:36,381 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 9 15) the Hoare annotation is: true [2020-08-19 01:57:36,381 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 15) no Hoare annotation was computed. [2020-08-19 01:57:36,381 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-08-19 01:57:36,381 INFO L268 CegarLoopResult]: For program point L12(lines 12 14) no Hoare annotation was computed. [2020-08-19 01:57:36,382 INFO L264 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (and (<= main_~input~0 20) (<= 20 main_~input~0)) [2020-08-19 01:57:36,382 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-08-19 01:57:36,382 INFO L268 CegarLoopResult]: For program point L12-2(lines 9 15) no Hoare annotation was computed. [2020-08-19 01:57:36,382 INFO L268 CegarLoopResult]: For program point idFINAL(lines 4 7) no Hoare annotation was computed. [2020-08-19 01:57:36,382 INFO L268 CegarLoopResult]: For program point idEXIT(lines 4 7) no Hoare annotation was computed. [2020-08-19 01:57:36,382 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 7) the Hoare annotation is: true [2020-08-19 01:57:36,383 INFO L264 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (= |id_#in~x| id_~x) [2020-08-19 01:57:36,383 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-08-19 01:57:36,383 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-08-19 01:57:36,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:57:36 BoogieIcfgContainer [2020-08-19 01:57:36,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:57:36,411 INFO L168 Benchmark]: Toolchain (without parser) took 19459.14 ms. Allocated memory was 140.5 MB in the beginning and 544.7 MB in the end (delta: 404.2 MB). Free memory was 103.5 MB in the beginning and 166.5 MB in the end (delta: -63.0 MB). Peak memory consumption was 341.2 MB. Max. memory is 7.1 GB. [2020-08-19 01:57:36,412 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 01:57:36,412 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.78 ms. Allocated memory is still 140.5 MB. Free memory was 103.1 MB in the beginning and 94.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-08-19 01:57:36,415 INFO L168 Benchmark]: Boogie Preprocessor took 103.62 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 94.0 MB in the beginning and 182.0 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-19 01:57:36,416 INFO L168 Benchmark]: RCFGBuilder took 229.77 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 170.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-08-19 01:57:36,416 INFO L168 Benchmark]: TraceAbstraction took 18872.49 ms. Allocated memory was 202.9 MB in the beginning and 544.7 MB in the end (delta: 341.8 MB). Free memory was 170.2 MB in the beginning and 166.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 345.5 MB. Max. memory is 7.1 GB. [2020-08-19 01:57:36,423 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 240.78 ms. Allocated memory is still 140.5 MB. Free memory was 103.1 MB in the beginning and 94.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.62 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 94.0 MB in the beginning and 182.0 MB in the end (delta: -88.0 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 229.77 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 170.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18872.49 ms. Allocated memory was 202.9 MB in the beginning and 544.7 MB in the end (delta: 341.8 MB). Free memory was 170.2 MB in the beginning and 166.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 345.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 18.6s, OverallIterations: 22, TraceHistogramMax: 22, AutomataDifference: 6.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 369 SDtfs, 657 SDslu, 3302 SDs, 0 SdLazy, 3411 SolverSat, 174 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1122 GetRequests, 573 SyntacticMatches, 0 SemanticMatches, 549 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2720 ImplicationChecksByTransitivity, 7.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=78occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 22 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 49 PreInvPairs, 49 NumberOfFragments, 15 HoareAnnotationTreeSize, 49 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 241 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 11.3s InterpolantComputationTime, 1672 NumberOfCodeBlocks, 1672 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 1650 ConstructedInterpolants, 0 QuantifiedInterpolants, 417408 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 1 PerfectInterpolantSequences, 5712/10164 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...