/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested9.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 05:19:39,179 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 05:19:39,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 05:19:39,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 05:19:39,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 05:19:39,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 05:19:39,239 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 05:19:39,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 05:19:39,244 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 05:19:39,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 05:19:39,249 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 05:19:39,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 05:19:39,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 05:19:39,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 05:19:39,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 05:19:39,257 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 05:19:39,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 05:19:39,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 05:19:39,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 05:19:39,268 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 05:19:39,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 05:19:39,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 05:19:39,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 05:19:39,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 05:19:39,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 05:19:39,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 05:19:39,290 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 05:19:39,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 05:19:39,293 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 05:19:39,333 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 05:19:39,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 05:19:39,336 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 05:19:39,336 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 05:19:39,336 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 05:19:39,337 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 05:19:39,337 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 05:19:39,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 05:19:39,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 05:19:39,338 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 05:19:39,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 05:19:39,339 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 05:19:39,339 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 05:19:39,339 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 05:19:39,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 05:19:39,340 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 05:19:39,340 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 05:19:39,340 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 05:19:39,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 05:19:39,341 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 05:19:39,341 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 05:19:39,341 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 05:19:39,341 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 05:19:39,342 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 05:19:39,342 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 05:19:39,342 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 05:19:39,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 05:19:39,342 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 05:19:39,343 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 05:19:39,343 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3; [2020-08-19 05:19:39,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 05:19:39,626 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 05:19:39,629 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 05:19:39,631 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 05:19:39,631 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 05:19:39,632 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested9.i [2020-08-19 05:19:39,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdc5aff2c/1c67907eb6ac47ef97795d5d0d972164/FLAG4c795cbb3 [2020-08-19 05:19:40,089 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 05:19:40,090 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested9.i [2020-08-19 05:19:40,097 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdc5aff2c/1c67907eb6ac47ef97795d5d0d972164/FLAG4c795cbb3 [2020-08-19 05:19:40,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cdc5aff2c/1c67907eb6ac47ef97795d5d0d972164 [2020-08-19 05:19:40,483 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 05:19:40,484 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 05:19:40,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 05:19:40,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 05:19:40,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 05:19:40,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:19:40" (1/1) ... [2020-08-19 05:19:40,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab3eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:19:40, skipping insertion in model container [2020-08-19 05:19:40,494 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 05:19:40" (1/1) ... [2020-08-19 05:19:40,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 05:19:40,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 05:19:40,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:19:40,744 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 05:19:40,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 05:19:40,772 INFO L208 MainTranslator]: Completed translation [2020-08-19 05:19:40,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:19:40 WrapperNode [2020-08-19 05:19:40,773 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 05:19:40,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 05:19:40,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 05:19:40,773 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 05:19:40,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:19:40" (1/1) ... [2020-08-19 05:19:40,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:19:40" (1/1) ... [2020-08-19 05:19:40,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:19:40" (1/1) ... [2020-08-19 05:19:40,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:19:40" (1/1) ... [2020-08-19 05:19:40,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:19:40" (1/1) ... [2020-08-19 05:19:40,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:19:40" (1/1) ... [2020-08-19 05:19:40,871 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:19:40" (1/1) ... [2020-08-19 05:19:40,873 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 05:19:40,874 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 05:19:40,874 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 05:19:40,874 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 05:19:40,875 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:19:40" (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 05:19:40,938 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 05:19:40,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 05:19:40,939 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 05:19:40,939 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 05:19:40,939 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 05:19:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 05:19:40,939 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 05:19:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 05:19:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 05:19:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 05:19:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 05:19:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 05:19:40,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 05:19:41,178 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 05:19:41,179 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-19 05:19:41,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:19:41 BoogieIcfgContainer [2020-08-19 05:19:41,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 05:19:41,184 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 05:19:41,184 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 05:19:41,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 05:19:41,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 05:19:40" (1/3) ... [2020-08-19 05:19:41,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33cbf045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:19:41, skipping insertion in model container [2020-08-19 05:19:41,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 05:19:40" (2/3) ... [2020-08-19 05:19:41,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33cbf045 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 05:19:41, skipping insertion in model container [2020-08-19 05:19:41,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 05:19:41" (3/3) ... [2020-08-19 05:19:41,191 INFO L109 eAbstractionObserver]: Analyzing ICFG nested9.i [2020-08-19 05:19:41,201 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 05:19:41,208 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 05:19:41,224 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 05:19:41,259 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 05:19:41,259 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 05:19:41,259 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 05:19:41,260 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 05:19:41,260 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 05:19:41,260 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 05:19:41,260 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 05:19:41,261 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 05:19:41,292 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-08-19 05:19:41,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 05:19:41,299 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:19:41,301 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:19:41,301 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:19:41,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:19:41,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1671060194, now seen corresponding path program 1 times [2020-08-19 05:19:41,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:19:41,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886362157] [2020-08-19 05:19:41,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:19:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:41,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:19:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:41,592 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 05:19:41,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886362157] [2020-08-19 05:19:41,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:19:41,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-19 05:19:41,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092267974] [2020-08-19 05:19:41,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 05:19:41,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:19:41,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 05:19:41,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-19 05:19:41,623 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 8 states. [2020-08-19 05:19:41,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:19:41,978 INFO L93 Difference]: Finished difference Result 68 states and 95 transitions. [2020-08-19 05:19:41,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 05:19:41,980 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-08-19 05:19:41,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:19:41,989 INFO L225 Difference]: With dead ends: 68 [2020-08-19 05:19:41,990 INFO L226 Difference]: Without dead ends: 36 [2020-08-19 05:19:41,994 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:19:42,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-19 05:19:42,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2020-08-19 05:19:42,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-19 05:19:42,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-19 05:19:42,041 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 18 [2020-08-19 05:19:42,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:19:42,041 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-19 05:19:42,042 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 05:19:42,042 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-19 05:19:42,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 05:19:42,043 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:19:42,043 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:19:42,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 05:19:42,044 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:19:42,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:19:42,045 INFO L82 PathProgramCache]: Analyzing trace with hash -764881689, now seen corresponding path program 1 times [2020-08-19 05:19:42,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:19:42,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622724693] [2020-08-19 05:19:42,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:19:42,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:42,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:19:42,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:42,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 05:19:42,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:42,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 05:19:42,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622724693] [2020-08-19 05:19:42,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:19:42,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-19 05:19:42,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596400249] [2020-08-19 05:19:42,157 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 05:19:42,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:19:42,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 05:19:42,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:19:42,162 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 6 states. [2020-08-19 05:19:42,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:19:42,315 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2020-08-19 05:19:42,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 05:19:42,316 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-08-19 05:19:42,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:19:42,320 INFO L225 Difference]: With dead ends: 57 [2020-08-19 05:19:42,320 INFO L226 Difference]: Without dead ends: 38 [2020-08-19 05:19:42,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-19 05:19:42,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-19 05:19:42,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-08-19 05:19:42,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-19 05:19:42,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-08-19 05:19:42,332 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 25 [2020-08-19 05:19:42,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:19:42,332 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-08-19 05:19:42,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 05:19:42,332 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-08-19 05:19:42,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 05:19:42,333 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:19:42,334 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:19:42,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 05:19:42,334 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:19:42,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:19:42,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1134636734, now seen corresponding path program 1 times [2020-08-19 05:19:42,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:19:42,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1442223888] [2020-08-19 05:19:42,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:19:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:42,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:19:42,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:42,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:19:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:42,448 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 05:19:42,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1442223888] [2020-08-19 05:19:42,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:19:42,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 05:19:42,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732230898] [2020-08-19 05:19:42,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 05:19:42,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:19:42,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 05:19:42,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-19 05:19:42,454 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 7 states. [2020-08-19 05:19:42,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:19:42,719 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2020-08-19 05:19:42,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 05:19:42,720 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-08-19 05:19:42,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:19:42,722 INFO L225 Difference]: With dead ends: 70 [2020-08-19 05:19:42,722 INFO L226 Difference]: Without dead ends: 51 [2020-08-19 05:19:42,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-08-19 05:19:42,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-19 05:19:42,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 42. [2020-08-19 05:19:42,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-19 05:19:42,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-08-19 05:19:42,753 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 28 [2020-08-19 05:19:42,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:19:42,753 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-08-19 05:19:42,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 05:19:42,760 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-08-19 05:19:42,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-19 05:19:42,762 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:19:42,762 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:19:42,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 05:19:42,763 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:19:42,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:19:42,763 INFO L82 PathProgramCache]: Analyzing trace with hash 83931911, now seen corresponding path program 2 times [2020-08-19 05:19:42,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:19:42,764 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548740312] [2020-08-19 05:19:42,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:19:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:42,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:19:42,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:42,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-19 05:19:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:42,816 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-19 05:19:42,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548740312] [2020-08-19 05:19:42,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:19:42,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 05:19:42,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945709077] [2020-08-19 05:19:42,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 05:19:42,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:19:42,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 05:19:42,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 05:19:42,819 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 6 states. [2020-08-19 05:19:42,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:19:42,925 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-08-19 05:19:42,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 05:19:42,927 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-08-19 05:19:42,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:19:42,928 INFO L225 Difference]: With dead ends: 63 [2020-08-19 05:19:42,928 INFO L226 Difference]: Without dead ends: 44 [2020-08-19 05:19:42,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:19:42,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-19 05:19:42,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-08-19 05:19:42,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-19 05:19:42,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-08-19 05:19:42,951 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 31 [2020-08-19 05:19:42,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:19:42,952 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-08-19 05:19:42,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 05:19:42,952 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-08-19 05:19:42,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-19 05:19:42,953 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:19:42,953 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:19:42,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 05:19:42,954 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:19:42,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:19:42,954 INFO L82 PathProgramCache]: Analyzing trace with hash 848296232, now seen corresponding path program 1 times [2020-08-19 05:19:42,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:19:42,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354486700] [2020-08-19 05:19:42,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:19:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:42,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:19:42,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:42,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 05:19:42,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:43,001 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-19 05:19:43,002 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354486700] [2020-08-19 05:19:43,002 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 05:19:43,003 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 05:19:43,003 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238347448] [2020-08-19 05:19:43,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 05:19:43,004 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:19:43,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 05:19:43,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 05:19:43,004 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 5 states. [2020-08-19 05:19:43,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:19:43,078 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2020-08-19 05:19:43,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 05:19:43,078 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-19 05:19:43,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:19:43,079 INFO L225 Difference]: With dead ends: 75 [2020-08-19 05:19:43,080 INFO L226 Difference]: Without dead ends: 42 [2020-08-19 05:19:43,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-08-19 05:19:43,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-19 05:19:43,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-08-19 05:19:43,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-19 05:19:43,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-08-19 05:19:43,090 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 34 [2020-08-19 05:19:43,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:19:43,090 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-08-19 05:19:43,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 05:19:43,091 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-08-19 05:19:43,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-19 05:19:43,092 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:19:43,092 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:19:43,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 05:19:43,093 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:19:43,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:19:43,093 INFO L82 PathProgramCache]: Analyzing trace with hash -670641491, now seen corresponding path program 2 times [2020-08-19 05:19:43,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:19:43,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541087951] [2020-08-19 05:19:43,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:19:43,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:43,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:19:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:43,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:19:43,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:43,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:19:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:43,252 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-19 05:19:43,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541087951] [2020-08-19 05:19:43,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:19:43,253 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 05:19:43,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373923967] [2020-08-19 05:19:43,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 05:19:43,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:19:43,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 05:19:43,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:19:43,256 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 10 states. [2020-08-19 05:19:43,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:19:43,547 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2020-08-19 05:19:43,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-19 05:19:43,548 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-08-19 05:19:43,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:19:43,550 INFO L225 Difference]: With dead ends: 60 [2020-08-19 05:19:43,550 INFO L226 Difference]: Without dead ends: 58 [2020-08-19 05:19:43,550 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-08-19 05:19:43,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-19 05:19:43,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2020-08-19 05:19:43,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-08-19 05:19:43,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-08-19 05:19:43,572 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 41 [2020-08-19 05:19:43,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:19:43,573 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-08-19 05:19:43,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 05:19:43,573 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-08-19 05:19:43,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-19 05:19:43,578 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:19:43,581 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:19:43,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 05:19:43,581 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:19:43,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:19:43,582 INFO L82 PathProgramCache]: Analyzing trace with hash 2015935239, now seen corresponding path program 3 times [2020-08-19 05:19:43,582 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:19:43,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403222330] [2020-08-19 05:19:43,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:19:43,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:43,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:19:43,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:43,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:19:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:43,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:19:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:43,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 05:19:43,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:43,737 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 7 proven. 23 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-19 05:19:43,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403222330] [2020-08-19 05:19:43,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:19:43,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 05:19:43,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528235954] [2020-08-19 05:19:43,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 05:19:43,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:19:43,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 05:19:43,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-19 05:19:43,740 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 10 states. [2020-08-19 05:19:44,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:19:44,021 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2020-08-19 05:19:44,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 05:19:44,022 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2020-08-19 05:19:44,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:19:44,023 INFO L225 Difference]: With dead ends: 74 [2020-08-19 05:19:44,023 INFO L226 Difference]: Without dead ends: 72 [2020-08-19 05:19:44,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-08-19 05:19:44,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-08-19 05:19:44,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 58. [2020-08-19 05:19:44,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-08-19 05:19:44,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2020-08-19 05:19:44,044 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 51 [2020-08-19 05:19:44,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:19:44,048 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2020-08-19 05:19:44,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 05:19:44,048 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2020-08-19 05:19:44,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-19 05:19:44,049 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:19:44,049 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:19:44,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 05:19:44,052 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:19:44,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:19:44,052 INFO L82 PathProgramCache]: Analyzing trace with hash -1770393310, now seen corresponding path program 4 times [2020-08-19 05:19:44,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:19:44,053 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254670586] [2020-08-19 05:19:44,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:19:44,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:44,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:19:44,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:44,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:19:44,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:44,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:19:44,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:44,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-19 05:19:44,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:44,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:19:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:44,183 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 41 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-08-19 05:19:44,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254670586] [2020-08-19 05:19:44,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:19:44,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 05:19:44,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712595113] [2020-08-19 05:19:44,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 05:19:44,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:19:44,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 05:19:44,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-19 05:19:44,186 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 9 states. [2020-08-19 05:19:44,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:19:44,406 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2020-08-19 05:19:44,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 05:19:44,406 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-19 05:19:44,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:19:44,407 INFO L225 Difference]: With dead ends: 97 [2020-08-19 05:19:44,408 INFO L226 Difference]: Without dead ends: 61 [2020-08-19 05:19:44,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2020-08-19 05:19:44,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-08-19 05:19:44,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-08-19 05:19:44,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-19 05:19:44,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-08-19 05:19:44,430 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 58 [2020-08-19 05:19:44,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:19:44,431 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-08-19 05:19:44,431 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 05:19:44,431 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-08-19 05:19:44,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-19 05:19:44,434 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:19:44,434 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:19:44,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 05:19:44,434 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:19:44,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:19:44,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1336799475, now seen corresponding path program 5 times [2020-08-19 05:19:44,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:19:44,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69616930] [2020-08-19 05:19:44,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:19:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:44,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:19:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:44,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:19:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:44,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:19:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:44,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:19:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:44,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:19:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:44,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:19:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:44,574 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 16 proven. 54 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-08-19 05:19:44,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69616930] [2020-08-19 05:19:44,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:19:44,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 05:19:44,575 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698555854] [2020-08-19 05:19:44,576 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:19:44,576 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:19:44,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:19:44,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:19:44,577 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 12 states. [2020-08-19 05:19:44,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:19:44,873 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2020-08-19 05:19:44,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 05:19:44,874 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-08-19 05:19:44,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:19:44,876 INFO L225 Difference]: With dead ends: 90 [2020-08-19 05:19:44,876 INFO L226 Difference]: Without dead ends: 88 [2020-08-19 05:19:44,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2020-08-19 05:19:44,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-08-19 05:19:44,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 71. [2020-08-19 05:19:44,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-08-19 05:19:44,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2020-08-19 05:19:44,889 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 65 [2020-08-19 05:19:44,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:19:44,890 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2020-08-19 05:19:44,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:19:44,890 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2020-08-19 05:19:44,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-19 05:19:44,891 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:19:44,891 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:19:44,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 05:19:44,892 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:19:44,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:19:44,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1858831946, now seen corresponding path program 6 times [2020-08-19 05:19:44,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:19:44,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739923776] [2020-08-19 05:19:44,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:19:44,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:45,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:19:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:45,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:19:45,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:45,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:19:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:45,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:19:45,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:45,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:19:45,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:45,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:19:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:45,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:19:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:45,071 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 30 proven. 62 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-08-19 05:19:45,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739923776] [2020-08-19 05:19:45,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:19:45,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 05:19:45,073 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887237368] [2020-08-19 05:19:45,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:19:45,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:19:45,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:19:45,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:19:45,074 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand 12 states. [2020-08-19 05:19:45,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:19:45,508 INFO L93 Difference]: Finished difference Result 141 states and 162 transitions. [2020-08-19 05:19:45,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-19 05:19:45,508 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-08-19 05:19:45,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:19:45,510 INFO L225 Difference]: With dead ends: 141 [2020-08-19 05:19:45,510 INFO L226 Difference]: Without dead ends: 96 [2020-08-19 05:19:45,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=231, Invalid=581, Unknown=0, NotChecked=0, Total=812 [2020-08-19 05:19:45,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-08-19 05:19:45,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-08-19 05:19:45,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-08-19 05:19:45,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2020-08-19 05:19:45,531 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 72 [2020-08-19 05:19:45,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:19:45,531 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2020-08-19 05:19:45,531 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:19:45,531 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2020-08-19 05:19:45,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-19 05:19:45,533 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:19:45,533 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:19:45,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 05:19:45,533 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:19:45,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:19:45,534 INFO L82 PathProgramCache]: Analyzing trace with hash 179803111, now seen corresponding path program 7 times [2020-08-19 05:19:45,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:19:45,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154611547] [2020-08-19 05:19:45,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:19:45,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:45,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:19:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:45,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:19:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:45,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:19:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:45,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:19:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:45,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:19:45,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:45,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:19:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:45,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-19 05:19:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:45,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:19:45,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:45,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-19 05:19:45,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:45,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 05:19:45,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:45,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:19:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:45,669 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 162 proven. 49 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2020-08-19 05:19:45,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154611547] [2020-08-19 05:19:45,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:19:45,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 05:19:45,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670568212] [2020-08-19 05:19:45,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 05:19:45,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:19:45,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 05:19:45,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-19 05:19:45,672 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand 11 states. [2020-08-19 05:19:46,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:19:46,009 INFO L93 Difference]: Finished difference Result 155 states and 179 transitions. [2020-08-19 05:19:46,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 05:19:46,009 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 109 [2020-08-19 05:19:46,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:19:46,011 INFO L225 Difference]: With dead ends: 155 [2020-08-19 05:19:46,011 INFO L226 Difference]: Without dead ends: 98 [2020-08-19 05:19:46,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=333, Unknown=0, NotChecked=0, Total=506 [2020-08-19 05:19:46,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-08-19 05:19:46,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2020-08-19 05:19:46,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-08-19 05:19:46,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2020-08-19 05:19:46,027 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 109 [2020-08-19 05:19:46,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:19:46,028 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2020-08-19 05:19:46,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 05:19:46,028 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2020-08-19 05:19:46,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-19 05:19:46,030 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:19:46,030 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:19:46,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 05:19:46,031 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:19:46,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:19:46,031 INFO L82 PathProgramCache]: Analyzing trace with hash -888781782, now seen corresponding path program 8 times [2020-08-19 05:19:46,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:19:46,032 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [579373623] [2020-08-19 05:19:46,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:19:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:19:46,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:19:46,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:19:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:19:46,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:19:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:19:46,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:19:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:19:46,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:19:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-19 05:19:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:19:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:19:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,221 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 182 proven. 62 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2020-08-19 05:19:46,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [579373623] [2020-08-19 05:19:46,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:19:46,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 05:19:46,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895271846] [2020-08-19 05:19:46,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 05:19:46,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:19:46,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 05:19:46,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-19 05:19:46,224 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand 11 states. [2020-08-19 05:19:46,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:19:46,567 INFO L93 Difference]: Finished difference Result 178 states and 205 transitions. [2020-08-19 05:19:46,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 05:19:46,567 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 116 [2020-08-19 05:19:46,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:19:46,569 INFO L225 Difference]: With dead ends: 178 [2020-08-19 05:19:46,569 INFO L226 Difference]: Without dead ends: 99 [2020-08-19 05:19:46,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=307, Unknown=0, NotChecked=0, Total=462 [2020-08-19 05:19:46,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-19 05:19:46,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2020-08-19 05:19:46,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-19 05:19:46,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 110 transitions. [2020-08-19 05:19:46,601 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 110 transitions. Word has length 116 [2020-08-19 05:19:46,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:19:46,603 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 110 transitions. [2020-08-19 05:19:46,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 05:19:46,603 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 110 transitions. [2020-08-19 05:19:46,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-08-19 05:19:46,605 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:19:46,605 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:19:46,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 05:19:46,606 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:19:46,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:19:46,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1465957677, now seen corresponding path program 9 times [2020-08-19 05:19:46,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:19:46,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196239793] [2020-08-19 05:19:46,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:19:46,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:19:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:19:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:19:46,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:19:46,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:19:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:19:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:19:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:19:46,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:19:46,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:19:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:19:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:19:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:19:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:46,863 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 70 proven. 217 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2020-08-19 05:19:46,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196239793] [2020-08-19 05:19:46,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:19:46,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 05:19:46,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838548409] [2020-08-19 05:19:46,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 05:19:46,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:19:46,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 05:19:46,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:19:46,866 INFO L87 Difference]: Start difference. First operand 98 states and 110 transitions. Second operand 14 states. [2020-08-19 05:19:47,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:19:47,255 INFO L93 Difference]: Finished difference Result 136 states and 149 transitions. [2020-08-19 05:19:47,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 05:19:47,256 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 123 [2020-08-19 05:19:47,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:19:47,257 INFO L225 Difference]: With dead ends: 136 [2020-08-19 05:19:47,257 INFO L226 Difference]: Without dead ends: 134 [2020-08-19 05:19:47,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=160, Invalid=490, Unknown=0, NotChecked=0, Total=650 [2020-08-19 05:19:47,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-08-19 05:19:47,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 125. [2020-08-19 05:19:47,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-19 05:19:47,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 137 transitions. [2020-08-19 05:19:47,279 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 137 transitions. Word has length 123 [2020-08-19 05:19:47,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:19:47,280 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 137 transitions. [2020-08-19 05:19:47,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 05:19:47,280 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 137 transitions. [2020-08-19 05:19:47,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-19 05:19:47,281 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:19:47,281 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:19:47,282 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 05:19:47,282 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:19:47,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:19:47,282 INFO L82 PathProgramCache]: Analyzing trace with hash -1688384554, now seen corresponding path program 10 times [2020-08-19 05:19:47,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:19:47,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173232377] [2020-08-19 05:19:47,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:19:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:47,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:19:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:47,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:19:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:47,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:19:47,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:47,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:19:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:47,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:19:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:47,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:19:47,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:47,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:19:47,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:47,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:19:47,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:47,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:19:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:47,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:19:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:47,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:19:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:47,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:19:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:47,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:19:47,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:47,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:19:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:47,484 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 61 proven. 271 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2020-08-19 05:19:47,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173232377] [2020-08-19 05:19:47,485 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:19:47,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 05:19:47,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753502922] [2020-08-19 05:19:47,487 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 05:19:47,487 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:19:47,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 05:19:47,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-08-19 05:19:47,488 INFO L87 Difference]: Start difference. First operand 125 states and 137 transitions. Second operand 14 states. [2020-08-19 05:19:48,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:19:48,150 INFO L93 Difference]: Finished difference Result 234 states and 273 transitions. [2020-08-19 05:19:48,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-19 05:19:48,150 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 130 [2020-08-19 05:19:48,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:19:48,154 INFO L225 Difference]: With dead ends: 234 [2020-08-19 05:19:48,155 INFO L226 Difference]: Without dead ends: 171 [2020-08-19 05:19:48,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=462, Invalid=1178, Unknown=0, NotChecked=0, Total=1640 [2020-08-19 05:19:48,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-19 05:19:48,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 153. [2020-08-19 05:19:48,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-19 05:19:48,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 174 transitions. [2020-08-19 05:19:48,189 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 174 transitions. Word has length 130 [2020-08-19 05:19:48,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:19:48,189 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 174 transitions. [2020-08-19 05:19:48,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 05:19:48,190 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 174 transitions. [2020-08-19 05:19:48,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-19 05:19:48,192 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:19:48,192 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 6, 5, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:19:48,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 05:19:48,192 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:19:48,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:19:48,192 INFO L82 PathProgramCache]: Analyzing trace with hash -840848228, now seen corresponding path program 11 times [2020-08-19 05:19:48,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:19:48,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1524898965] [2020-08-19 05:19:48,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:19:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:48,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:19:48,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:48,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:19:48,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:48,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:19:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:48,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:19:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:48,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:19:48,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:48,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:19:48,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:48,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:19:48,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:48,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:19:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:48,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:19:48,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:48,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:19:48,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:48,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:19:48,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:48,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:19:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:48,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:19:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:48,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-19 05:19:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:48,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:19:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:48,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:19:48,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:48,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:19:48,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:48,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 284 proven. 205 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2020-08-19 05:19:48,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1524898965] [2020-08-19 05:19:48,437 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:19:48,437 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 05:19:48,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312119614] [2020-08-19 05:19:48,438 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 05:19:48,438 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:19:48,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 05:19:48,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-08-19 05:19:48,439 INFO L87 Difference]: Start difference. First operand 153 states and 174 transitions. Second operand 13 states. [2020-08-19 05:19:48,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:19:48,897 INFO L93 Difference]: Finished difference Result 218 states and 247 transitions. [2020-08-19 05:19:48,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 05:19:48,897 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 154 [2020-08-19 05:19:48,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:19:48,899 INFO L225 Difference]: With dead ends: 218 [2020-08-19 05:19:48,899 INFO L226 Difference]: Without dead ends: 155 [2020-08-19 05:19:48,900 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=253, Invalid=503, Unknown=0, NotChecked=0, Total=756 [2020-08-19 05:19:48,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-19 05:19:48,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2020-08-19 05:19:48,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-19 05:19:48,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 172 transitions. [2020-08-19 05:19:48,924 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 172 transitions. Word has length 154 [2020-08-19 05:19:48,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:19:48,924 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 172 transitions. [2020-08-19 05:19:48,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 05:19:48,925 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 172 transitions. [2020-08-19 05:19:48,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-19 05:19:48,928 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:19:48,928 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 6, 5, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:19:48,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-19 05:19:48,928 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:19:48,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:19:48,929 INFO L82 PathProgramCache]: Analyzing trace with hash 1311982393, now seen corresponding path program 12 times [2020-08-19 05:19:48,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:19:48,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963428114] [2020-08-19 05:19:48,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:19:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:49,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:19:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:49,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:19:49,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:49,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:19:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:49,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:19:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:49,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:19:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:49,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:19:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:49,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:19:49,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:49,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:19:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:49,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:19:49,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:49,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:19:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:49,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:19:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:49,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:19:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:49,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:19:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:49,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:19:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:49,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:19:49,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:49,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:19:49,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:49,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:19:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:49,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:19:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:49,196 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 80 proven. 422 refuted. 0 times theorem prover too weak. 673 trivial. 0 not checked. [2020-08-19 05:19:49,197 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963428114] [2020-08-19 05:19:49,200 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:19:49,200 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 05:19:49,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129517529] [2020-08-19 05:19:49,201 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 05:19:49,202 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:19:49,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 05:19:49,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-08-19 05:19:49,203 INFO L87 Difference]: Start difference. First operand 153 states and 172 transitions. Second operand 15 states. [2020-08-19 05:19:49,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:19:49,883 INFO L93 Difference]: Finished difference Result 184 states and 207 transitions. [2020-08-19 05:19:49,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-19 05:19:49,886 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 161 [2020-08-19 05:19:49,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:19:49,890 INFO L225 Difference]: With dead ends: 184 [2020-08-19 05:19:49,891 INFO L226 Difference]: Without dead ends: 182 [2020-08-19 05:19:49,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=188, Invalid=568, Unknown=0, NotChecked=0, Total=756 [2020-08-19 05:19:49,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-19 05:19:49,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 167. [2020-08-19 05:19:49,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-08-19 05:19:49,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 188 transitions. [2020-08-19 05:19:49,930 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 188 transitions. Word has length 161 [2020-08-19 05:19:49,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:19:49,932 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 188 transitions. [2020-08-19 05:19:49,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 05:19:49,932 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 188 transitions. [2020-08-19 05:19:49,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-08-19 05:19:49,939 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:19:49,939 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 6, 5, 5, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:19:49,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-19 05:19:49,940 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:19:49,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:19:49,940 INFO L82 PathProgramCache]: Analyzing trace with hash -1425986384, now seen corresponding path program 13 times [2020-08-19 05:19:49,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:19:49,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661785479] [2020-08-19 05:19:49,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:19:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:50,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:19:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:50,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:19:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:50,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:19:50,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:50,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:19:50,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:50,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:19:50,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:50,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:19:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:50,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:19:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:50,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:19:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:50,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:19:50,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:50,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:19:50,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:50,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:19:50,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:50,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:19:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:50,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:19:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:50,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:19:50,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:50,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:19:50,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:50,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:19:50,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:50,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:19:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:50,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:19:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:50,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 05:19:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 1303 backedges. 89 proven. 521 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2020-08-19 05:19:50,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661785479] [2020-08-19 05:19:50,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:19:50,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 05:19:50,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247626301] [2020-08-19 05:19:50,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 05:19:50,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:19:50,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 05:19:50,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-08-19 05:19:50,302 INFO L87 Difference]: Start difference. First operand 167 states and 188 transitions. Second operand 16 states. [2020-08-19 05:19:51,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:19:51,265 INFO L93 Difference]: Finished difference Result 295 states and 344 transitions. [2020-08-19 05:19:51,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-08-19 05:19:51,265 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 168 [2020-08-19 05:19:51,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:19:51,267 INFO L225 Difference]: With dead ends: 295 [2020-08-19 05:19:51,268 INFO L226 Difference]: Without dead ends: 218 [2020-08-19 05:19:51,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 651 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=642, Invalid=1614, Unknown=0, NotChecked=0, Total=2256 [2020-08-19 05:19:51,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-08-19 05:19:51,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 187. [2020-08-19 05:19:51,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-08-19 05:19:51,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 216 transitions. [2020-08-19 05:19:51,297 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 216 transitions. Word has length 168 [2020-08-19 05:19:51,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:19:51,298 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 216 transitions. [2020-08-19 05:19:51,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 05:19:51,298 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 216 transitions. [2020-08-19 05:19:51,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-08-19 05:19:51,301 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:19:51,301 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 8, 7, 7, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:19:51,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-19 05:19:51,302 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:19:51,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:19:51,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1410050128, now seen corresponding path program 14 times [2020-08-19 05:19:51,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:19:51,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548663543] [2020-08-19 05:19:51,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:19:51,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:19:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:19:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:19:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:19:51,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:19:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:19:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:19:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:19:51,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:19:51,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:19:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:19:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:19:51,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:19:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:19:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:19:51,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:19:51,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:19:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:19:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-19 05:19:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 05:19:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 05:19:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-19 05:19:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-08-19 05:19:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-19 05:19:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-19 05:19:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 05:19:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:51,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2506 backedges. 707 proven. 405 refuted. 0 times theorem prover too weak. 1394 trivial. 0 not checked. [2020-08-19 05:19:51,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548663543] [2020-08-19 05:19:51,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:19:51,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 05:19:51,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423811762] [2020-08-19 05:19:51,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 05:19:51,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:19:51,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 05:19:51,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-08-19 05:19:51,560 INFO L87 Difference]: Start difference. First operand 187 states and 216 transitions. Second operand 15 states. [2020-08-19 05:19:52,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:19:52,279 INFO L93 Difference]: Finished difference Result 304 states and 358 transitions. [2020-08-19 05:19:52,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-19 05:19:52,280 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 226 [2020-08-19 05:19:52,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:19:52,282 INFO L225 Difference]: With dead ends: 304 [2020-08-19 05:19:52,282 INFO L226 Difference]: Without dead ends: 209 [2020-08-19 05:19:52,283 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=425, Invalid=835, Unknown=0, NotChecked=0, Total=1260 [2020-08-19 05:19:52,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-08-19 05:19:52,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 202. [2020-08-19 05:19:52,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-08-19 05:19:52,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 235 transitions. [2020-08-19 05:19:52,311 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 235 transitions. Word has length 226 [2020-08-19 05:19:52,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:19:52,312 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 235 transitions. [2020-08-19 05:19:52,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 05:19:52,312 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 235 transitions. [2020-08-19 05:19:52,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-08-19 05:19:52,315 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:19:52,316 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 8, 7, 7, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:19:52,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-19 05:19:52,316 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:19:52,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:19:52,316 INFO L82 PathProgramCache]: Analyzing trace with hash 400238009, now seen corresponding path program 15 times [2020-08-19 05:19:52,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:19:52,317 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726264973] [2020-08-19 05:19:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:19:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:19:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:19:52,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:19:52,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:19:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:19:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:19:52,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:19:52,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:19:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:19:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:19:52,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:19:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:19:52,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:19:52,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:19:52,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:19:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:19:52,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:19:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:19:52,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 05:19:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 05:19:52,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 05:19:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:19:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-08-19 05:19:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-19 05:19:52,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-19 05:19:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 05:19:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-19 05:19:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:52,555 INFO L134 CoverageAnalysis]: Checked inductivity of 2692 backedges. 833 proven. 226 refuted. 0 times theorem prover too weak. 1633 trivial. 0 not checked. [2020-08-19 05:19:52,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726264973] [2020-08-19 05:19:52,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:19:52,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 05:19:52,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537249518] [2020-08-19 05:19:52,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 05:19:52,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:19:52,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 05:19:52,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-08-19 05:19:52,558 INFO L87 Difference]: Start difference. First operand 202 states and 235 transitions. Second operand 13 states. [2020-08-19 05:19:53,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:19:53,015 INFO L93 Difference]: Finished difference Result 356 states and 421 transitions. [2020-08-19 05:19:53,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 05:19:53,016 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 233 [2020-08-19 05:19:53,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:19:53,018 INFO L225 Difference]: With dead ends: 356 [2020-08-19 05:19:53,018 INFO L226 Difference]: Without dead ends: 203 [2020-08-19 05:19:53,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=247, Invalid=509, Unknown=0, NotChecked=0, Total=756 [2020-08-19 05:19:53,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-08-19 05:19:53,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2020-08-19 05:19:53,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-08-19 05:19:53,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 232 transitions. [2020-08-19 05:19:53,045 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 232 transitions. Word has length 233 [2020-08-19 05:19:53,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:19:53,046 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 232 transitions. [2020-08-19 05:19:53,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 05:19:53,046 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 232 transitions. [2020-08-19 05:19:53,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-08-19 05:19:53,049 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:19:53,049 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 8, 7, 7, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:19:53,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-19 05:19:53,050 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:19:53,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:19:53,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1039853412, now seen corresponding path program 16 times [2020-08-19 05:19:53,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:19:53,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105906525] [2020-08-19 05:19:53,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:19:53,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:19:53,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:19:53,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:19:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:19:53,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:19:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:19:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:19:53,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:19:53,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:19:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:19:53,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:19:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:19:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:19:53,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:19:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:19:53,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:19:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:19:53,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:19:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 05:19:53,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 05:19:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 05:19:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:19:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-19 05:19:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-19 05:19:53,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-19 05:19:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 05:19:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-19 05:19:53,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 05:19:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:53,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2885 backedges. 116 proven. 1050 refuted. 0 times theorem prover too weak. 1719 trivial. 0 not checked. [2020-08-19 05:19:53,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105906525] [2020-08-19 05:19:53,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:19:53,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 05:19:53,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904630293] [2020-08-19 05:19:53,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 05:19:53,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:19:53,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 05:19:53,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-08-19 05:19:53,334 INFO L87 Difference]: Start difference. First operand 202 states and 232 transitions. Second operand 16 states. [2020-08-19 05:19:54,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:19:54,481 INFO L93 Difference]: Finished difference Result 398 states and 480 transitions. [2020-08-19 05:19:54,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-19 05:19:54,482 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 240 [2020-08-19 05:19:54,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:19:54,485 INFO L225 Difference]: With dead ends: 398 [2020-08-19 05:19:54,485 INFO L226 Difference]: Without dead ends: 306 [2020-08-19 05:19:54,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=903, Invalid=2403, Unknown=0, NotChecked=0, Total=3306 [2020-08-19 05:19:54,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-08-19 05:19:54,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 267. [2020-08-19 05:19:54,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-08-19 05:19:54,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 318 transitions. [2020-08-19 05:19:54,522 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 318 transitions. Word has length 240 [2020-08-19 05:19:54,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:19:54,523 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 318 transitions. [2020-08-19 05:19:54,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 05:19:54,523 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 318 transitions. [2020-08-19 05:19:54,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-08-19 05:19:54,527 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:19:54,527 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 9, 8, 8, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:19:54,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-19 05:19:54,528 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:19:54,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:19:54,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1581346975, now seen corresponding path program 17 times [2020-08-19 05:19:54,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:19:54,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651561329] [2020-08-19 05:19:54,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:19:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:19:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:19:54,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:19:54,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:19:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:19:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:19:54,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:19:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:19:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:19:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:19:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:19:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:19:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:19:54,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:19:54,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:19:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:19:54,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:19:54,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:19:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 05:19:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 05:19:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 05:19:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:19:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-19 05:19:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-19 05:19:54,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-19 05:19:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 05:19:54,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-19 05:19:54,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-19 05:19:54,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 05:19:54,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-19 05:19:54,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-19 05:19:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-19 05:19:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:54,806 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 937 proven. 633 refuted. 0 times theorem prover too weak. 2215 trivial. 0 not checked. [2020-08-19 05:19:54,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651561329] [2020-08-19 05:19:54,806 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:19:54,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 05:19:54,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216898507] [2020-08-19 05:19:54,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 05:19:54,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:19:54,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 05:19:54,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-08-19 05:19:54,808 INFO L87 Difference]: Start difference. First operand 267 states and 318 transitions. Second operand 15 states. [2020-08-19 05:19:55,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:19:55,525 INFO L93 Difference]: Finished difference Result 461 states and 558 transitions. [2020-08-19 05:19:55,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 05:19:55,529 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 271 [2020-08-19 05:19:55,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:19:55,531 INFO L225 Difference]: With dead ends: 461 [2020-08-19 05:19:55,532 INFO L226 Difference]: Without dead ends: 286 [2020-08-19 05:19:55,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=396, Invalid=794, Unknown=0, NotChecked=0, Total=1190 [2020-08-19 05:19:55,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-08-19 05:19:55,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 239. [2020-08-19 05:19:55,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-19 05:19:55,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 278 transitions. [2020-08-19 05:19:55,565 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 278 transitions. Word has length 271 [2020-08-19 05:19:55,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:19:55,566 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 278 transitions. [2020-08-19 05:19:55,566 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 05:19:55,566 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 278 transitions. [2020-08-19 05:19:55,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-08-19 05:19:55,568 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:19:55,568 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 9, 8, 8, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:19:55,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-19 05:19:55,569 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:19:55,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:19:55,569 INFO L82 PathProgramCache]: Analyzing trace with hash -2078560834, now seen corresponding path program 18 times [2020-08-19 05:19:55,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:19:55,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000187212] [2020-08-19 05:19:55,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:19:55,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:19:55,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:19:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:19:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:19:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:19:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:19:55,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:19:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:19:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:19:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:19:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:19:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:19:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:19:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:19:55,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:19:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:19:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:19:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:19:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 05:19:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 05:19:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 05:19:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:19:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-19 05:19:55,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-19 05:19:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-19 05:19:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 05:19:55,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-19 05:19:55,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 05:19:55,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 05:19:55,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-19 05:19:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-19 05:19:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-19 05:19:55,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-19 05:19:55,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:55,955 INFO L134 CoverageAnalysis]: Checked inductivity of 4014 backedges. 429 proven. 1177 refuted. 0 times theorem prover too weak. 2408 trivial. 0 not checked. [2020-08-19 05:19:55,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000187212] [2020-08-19 05:19:55,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:19:55,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-19 05:19:55,958 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226962101] [2020-08-19 05:19:55,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-19 05:19:55,960 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:19:55,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-19 05:19:55,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-08-19 05:19:55,961 INFO L87 Difference]: Start difference. First operand 239 states and 278 transitions. Second operand 17 states. [2020-08-19 05:19:56,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:19:56,597 INFO L93 Difference]: Finished difference Result 312 states and 355 transitions. [2020-08-19 05:19:56,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 05:19:56,600 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 278 [2020-08-19 05:19:56,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:19:56,603 INFO L225 Difference]: With dead ends: 312 [2020-08-19 05:19:56,604 INFO L226 Difference]: Without dead ends: 310 [2020-08-19 05:19:56,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=251, Invalid=741, Unknown=0, NotChecked=0, Total=992 [2020-08-19 05:19:56,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-08-19 05:19:56,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 295. [2020-08-19 05:19:56,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-08-19 05:19:56,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 336 transitions. [2020-08-19 05:19:56,645 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 336 transitions. Word has length 278 [2020-08-19 05:19:56,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:19:56,647 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 336 transitions. [2020-08-19 05:19:56,647 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-19 05:19:56,647 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 336 transitions. [2020-08-19 05:19:56,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-08-19 05:19:56,649 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:19:56,650 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 9, 8, 8, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:19:56,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-19 05:19:56,650 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:19:56,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:19:56,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1263938933, now seen corresponding path program 19 times [2020-08-19 05:19:56,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:19:56,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547948074] [2020-08-19 05:19:56,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:19:56,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:19:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:19:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:19:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:19:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:19:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:19:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:19:56,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:19:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:19:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:19:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:19:56,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:19:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:19:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:19:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:19:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:19:56,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:19:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:19:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 05:19:56,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 05:19:56,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 05:19:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:19:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-19 05:19:56,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-19 05:19:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-19 05:19:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 05:19:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-19 05:19:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 05:19:56,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 05:19:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-19 05:19:56,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-19 05:19:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-19 05:19:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-19 05:19:56,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:56,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-19 05:19:56,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:57,011 INFO L134 CoverageAnalysis]: Checked inductivity of 4250 backedges. 150 proven. 1638 refuted. 0 times theorem prover too weak. 2462 trivial. 0 not checked. [2020-08-19 05:19:57,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547948074] [2020-08-19 05:19:57,012 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:19:57,012 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-19 05:19:57,012 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037463541] [2020-08-19 05:19:57,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-19 05:19:57,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:19:57,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-19 05:19:57,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-08-19 05:19:57,014 INFO L87 Difference]: Start difference. First operand 295 states and 336 transitions. Second operand 18 states. [2020-08-19 05:19:58,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:19:58,417 INFO L93 Difference]: Finished difference Result 501 states and 595 transitions. [2020-08-19 05:19:58,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-08-19 05:19:58,418 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 285 [2020-08-19 05:19:58,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:19:58,421 INFO L225 Difference]: With dead ends: 501 [2020-08-19 05:19:58,421 INFO L226 Difference]: Without dead ends: 410 [2020-08-19 05:19:58,423 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1519 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1240, Invalid=3182, Unknown=0, NotChecked=0, Total=4422 [2020-08-19 05:19:58,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-08-19 05:19:58,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 316. [2020-08-19 05:19:58,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-08-19 05:19:58,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 365 transitions. [2020-08-19 05:19:58,470 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 365 transitions. Word has length 285 [2020-08-19 05:19:58,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:19:58,471 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 365 transitions. [2020-08-19 05:19:58,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-19 05:19:58,471 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 365 transitions. [2020-08-19 05:19:58,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-08-19 05:19:58,474 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:19:58,474 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 10, 9, 9, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:19:58,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-19 05:19:58,475 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:19:58,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:19:58,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1910860175, now seen corresponding path program 20 times [2020-08-19 05:19:58,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:19:58,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1796660724] [2020-08-19 05:19:58,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:19:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:19:58,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:19:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:19:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:19:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:19:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:19:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:19:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:19:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:19:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:19:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:19:58,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:19:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:19:58,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:19:58,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:19:58,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:19:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:19:58,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:19:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 05:19:58,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 05:19:58,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 05:19:58,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:19:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-19 05:19:58,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-19 05:19:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-19 05:19:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 05:19:58,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-19 05:19:58,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 05:19:58,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 05:19:58,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-19 05:19:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-19 05:19:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-19 05:19:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-19 05:19:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-19 05:19:58,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-19 05:19:58,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-19 05:19:58,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-19 05:19:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-19 05:19:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-19 05:19:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:19:58,857 INFO L134 CoverageAnalysis]: Checked inductivity of 5603 backedges. 1239 proven. 1145 refuted. 0 times theorem prover too weak. 3219 trivial. 0 not checked. [2020-08-19 05:19:58,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1796660724] [2020-08-19 05:19:58,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:19:58,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-19 05:19:58,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765015343] [2020-08-19 05:19:58,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-19 05:19:58,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:19:58,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-19 05:19:58,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-08-19 05:19:58,859 INFO L87 Difference]: Start difference. First operand 316 states and 365 transitions. Second operand 17 states. [2020-08-19 05:19:59,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:19:59,781 INFO L93 Difference]: Finished difference Result 538 states and 640 transitions. [2020-08-19 05:19:59,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-19 05:19:59,782 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 323 [2020-08-19 05:19:59,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:19:59,785 INFO L225 Difference]: With dead ends: 538 [2020-08-19 05:19:59,785 INFO L226 Difference]: Without dead ends: 340 [2020-08-19 05:19:59,787 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=633, Invalid=1259, Unknown=0, NotChecked=0, Total=1892 [2020-08-19 05:19:59,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-08-19 05:19:59,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 334. [2020-08-19 05:19:59,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-08-19 05:19:59,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 387 transitions. [2020-08-19 05:19:59,852 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 387 transitions. Word has length 323 [2020-08-19 05:19:59,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:19:59,853 INFO L479 AbstractCegarLoop]: Abstraction has 334 states and 387 transitions. [2020-08-19 05:19:59,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-19 05:19:59,853 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 387 transitions. [2020-08-19 05:19:59,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-08-19 05:19:59,856 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:19:59,856 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 10, 9, 9, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:19:59,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-19 05:19:59,858 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:19:59,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:19:59,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1089690308, now seen corresponding path program 21 times [2020-08-19 05:19:59,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:19:59,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1440594542] [2020-08-19 05:19:59,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:19:59,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:00,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:20:00,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:20:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:20:00,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:20:00,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:20:00,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:20:00,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:20:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:20:00,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:20:00,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:20:00,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:20:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:20:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:20:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:20:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:20:00,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:20:00,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:20:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 05:20:00,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 05:20:00,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 05:20:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:20:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-19 05:20:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-19 05:20:00,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-19 05:20:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 05:20:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-19 05:20:00,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 05:20:00,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 05:20:00,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-19 05:20:00,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-19 05:20:00,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-19 05:20:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-19 05:20:00,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-19 05:20:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-19 05:20:00,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-19 05:20:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-19 05:20:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-19 05:20:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-19 05:20:00,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-19 05:20:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:00,281 INFO L134 CoverageAnalysis]: Checked inductivity of 5882 backedges. 443 proven. 2023 refuted. 0 times theorem prover too weak. 3416 trivial. 0 not checked. [2020-08-19 05:20:00,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1440594542] [2020-08-19 05:20:00,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:00,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 05:20:00,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334445403] [2020-08-19 05:20:00,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 05:20:00,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:00,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 05:20:00,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-08-19 05:20:00,284 INFO L87 Difference]: Start difference. First operand 334 states and 387 transitions. Second operand 15 states. [2020-08-19 05:20:01,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:01,235 INFO L93 Difference]: Finished difference Result 490 states and 557 transitions. [2020-08-19 05:20:01,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-19 05:20:01,235 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 330 [2020-08-19 05:20:01,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:01,239 INFO L225 Difference]: With dead ends: 490 [2020-08-19 05:20:01,239 INFO L226 Difference]: Without dead ends: 488 [2020-08-19 05:20:01,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=498, Invalid=1308, Unknown=0, NotChecked=0, Total=1806 [2020-08-19 05:20:01,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-08-19 05:20:01,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 443. [2020-08-19 05:20:01,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-08-19 05:20:01,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 510 transitions. [2020-08-19 05:20:01,301 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 510 transitions. Word has length 330 [2020-08-19 05:20:01,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:01,301 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 510 transitions. [2020-08-19 05:20:01,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 05:20:01,302 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 510 transitions. [2020-08-19 05:20:01,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-08-19 05:20:01,304 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:01,305 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 11, 10, 10, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:01,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-19 05:20:01,305 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:01,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:01,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1713724203, now seen corresponding path program 22 times [2020-08-19 05:20:01,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:01,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587610275] [2020-08-19 05:20:01,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:01,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:20:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:20:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:20:01,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:20:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:20:01,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:20:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:20:01,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:20:01,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:20:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:20:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:20:01,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:20:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:20:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:20:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:20:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:20:01,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:20:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 05:20:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 05:20:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 05:20:01,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:20:01,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-19 05:20:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-19 05:20:01,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-19 05:20:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 05:20:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-19 05:20:01,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 05:20:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 05:20:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-19 05:20:01,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-19 05:20:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-19 05:20:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-19 05:20:01,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-19 05:20:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-19 05:20:01,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-19 05:20:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-19 05:20:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-19 05:20:01,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-19 05:20:01,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-19 05:20:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-08-19 05:20:01,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-08-19 05:20:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-08-19 05:20:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-08-19 05:20:01,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-08-19 05:20:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-08-19 05:20:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:01,767 INFO L134 CoverageAnalysis]: Checked inductivity of 7781 backedges. 455 proven. 2337 refuted. 0 times theorem prover too weak. 4989 trivial. 0 not checked. [2020-08-19 05:20:01,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587610275] [2020-08-19 05:20:01,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:01,768 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-19 05:20:01,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516323385] [2020-08-19 05:20:01,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-19 05:20:01,769 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:01,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-19 05:20:01,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2020-08-19 05:20:01,770 INFO L87 Difference]: Start difference. First operand 443 states and 510 transitions. Second operand 18 states. [2020-08-19 05:20:02,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:02,416 INFO L93 Difference]: Finished difference Result 503 states and 584 transitions. [2020-08-19 05:20:02,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-19 05:20:02,417 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 375 [2020-08-19 05:20:02,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:02,421 INFO L225 Difference]: With dead ends: 503 [2020-08-19 05:20:02,421 INFO L226 Difference]: Without dead ends: 501 [2020-08-19 05:20:02,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=287, Invalid=835, Unknown=0, NotChecked=0, Total=1122 [2020-08-19 05:20:02,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-08-19 05:20:02,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 457. [2020-08-19 05:20:02,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-08-19 05:20:02,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 526 transitions. [2020-08-19 05:20:02,480 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 526 transitions. Word has length 375 [2020-08-19 05:20:02,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:02,481 INFO L479 AbstractCegarLoop]: Abstraction has 457 states and 526 transitions. [2020-08-19 05:20:02,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-19 05:20:02,481 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 526 transitions. [2020-08-19 05:20:02,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-08-19 05:20:02,484 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:02,484 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 11, 10, 10, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:02,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-19 05:20:02,484 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:02,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:02,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1934385026, now seen corresponding path program 23 times [2020-08-19 05:20:02,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:02,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256833654] [2020-08-19 05:20:02,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:02,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:20:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:20:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:20:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:20:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:20:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:20:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:20:02,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:20:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:20:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:20:02,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:20:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:20:02,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:20:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:20:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:20:02,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:20:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:20:02,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 05:20:02,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 05:20:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 05:20:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:20:02,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-19 05:20:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-19 05:20:02,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-19 05:20:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 05:20:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-19 05:20:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 05:20:02,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 05:20:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-19 05:20:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-19 05:20:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-19 05:20:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-19 05:20:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-19 05:20:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-19 05:20:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-19 05:20:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-19 05:20:02,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-19 05:20:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-19 05:20:02,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-19 05:20:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-08-19 05:20:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-08-19 05:20:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-08-19 05:20:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-08-19 05:20:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-08-19 05:20:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-08-19 05:20:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-08-19 05:20:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:02,847 INFO L134 CoverageAnalysis]: Checked inductivity of 8110 backedges. 1646 proven. 1795 refuted. 0 times theorem prover too weak. 4669 trivial. 0 not checked. [2020-08-19 05:20:02,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256833654] [2020-08-19 05:20:02,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:02,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 05:20:02,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530920109] [2020-08-19 05:20:02,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 05:20:02,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:02,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 05:20:02,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-08-19 05:20:02,850 INFO L87 Difference]: Start difference. First operand 457 states and 526 transitions. Second operand 13 states. [2020-08-19 05:20:03,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:03,414 INFO L93 Difference]: Finished difference Result 947 states and 1112 transitions. [2020-08-19 05:20:03,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 05:20:03,415 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 382 [2020-08-19 05:20:03,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:03,419 INFO L225 Difference]: With dead ends: 947 [2020-08-19 05:20:03,419 INFO L226 Difference]: Without dead ends: 506 [2020-08-19 05:20:03,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=345, Invalid=711, Unknown=0, NotChecked=0, Total=1056 [2020-08-19 05:20:03,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-08-19 05:20:03,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 503. [2020-08-19 05:20:03,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2020-08-19 05:20:03,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 595 transitions. [2020-08-19 05:20:03,490 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 595 transitions. Word has length 382 [2020-08-19 05:20:03,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:03,490 INFO L479 AbstractCegarLoop]: Abstraction has 503 states and 595 transitions. [2020-08-19 05:20:03,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 05:20:03,491 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 595 transitions. [2020-08-19 05:20:03,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-08-19 05:20:03,494 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:03,495 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 55, 55, 13, 12, 12, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:03,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-19 05:20:03,495 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:03,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:03,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1577141198, now seen corresponding path program 24 times [2020-08-19 05:20:03,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:03,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65157168] [2020-08-19 05:20:03,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:03,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:03,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:20:03,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:20:03,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:20:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:20:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:20:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:20:03,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:20:03,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:20:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:20:03,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:20:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:20:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:20:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:20:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:20:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:20:03,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:20:03,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:20:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 05:20:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 05:20:03,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 05:20:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:20:03,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-19 05:20:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-19 05:20:03,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-19 05:20:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 05:20:03,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-19 05:20:03,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 05:20:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-08-19 05:20:03,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-19 05:20:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-08-19 05:20:03,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-08-19 05:20:03,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-08-19 05:20:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-08-19 05:20:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-19 05:20:03,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-19 05:20:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-08-19 05:20:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-08-19 05:20:03,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-08-19 05:20:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-08-19 05:20:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-08-19 05:20:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-19 05:20:03,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-19 05:20:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-08-19 05:20:03,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-08-19 05:20:03,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-08-19 05:20:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-19 05:20:03,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-19 05:20:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-19 05:20:03,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-19 05:20:03,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-08-19 05:20:03,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-19 05:20:03,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-19 05:20:03,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-19 05:20:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-19 05:20:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-19 05:20:03,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:03,899 INFO L134 CoverageAnalysis]: Checked inductivity of 11597 backedges. 3275 proven. 704 refuted. 0 times theorem prover too weak. 7618 trivial. 0 not checked. [2020-08-19 05:20:03,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65157168] [2020-08-19 05:20:03,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:03,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 05:20:03,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94273252] [2020-08-19 05:20:03,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 05:20:03,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:03,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 05:20:03,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-08-19 05:20:03,901 INFO L87 Difference]: Start difference. First operand 503 states and 595 transitions. Second operand 11 states. [2020-08-19 05:20:04,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:04,234 INFO L93 Difference]: Finished difference Result 702 states and 825 transitions. [2020-08-19 05:20:04,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 05:20:04,234 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 454 [2020-08-19 05:20:04,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:04,237 INFO L225 Difference]: With dead ends: 702 [2020-08-19 05:20:04,237 INFO L226 Difference]: Without dead ends: 412 [2020-08-19 05:20:04,239 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=166, Invalid=296, Unknown=0, NotChecked=0, Total=462 [2020-08-19 05:20:04,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-19 05:20:04,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2020-08-19 05:20:04,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-08-19 05:20:04,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 473 transitions. [2020-08-19 05:20:04,292 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 473 transitions. Word has length 454 [2020-08-19 05:20:04,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:04,292 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 473 transitions. [2020-08-19 05:20:04,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 05:20:04,293 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 473 transitions. [2020-08-19 05:20:04,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-08-19 05:20:04,296 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:04,297 INFO L422 BasicCegarLoop]: trace histogram [62, 62, 62, 61, 61, 61, 61, 14, 13, 13, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:04,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-19 05:20:04,297 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:04,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:04,298 INFO L82 PathProgramCache]: Analyzing trace with hash 389126169, now seen corresponding path program 25 times [2020-08-19 05:20:04,298 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:04,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693925206] [2020-08-19 05:20:04,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:04,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:20:04,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:20:04,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:20:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:20:04,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:20:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:20:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:20:04,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:20:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:20:04,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:20:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:20:04,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:20:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:20:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:20:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:20:04,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:20:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:20:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 05:20:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 05:20:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 05:20:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:20:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-19 05:20:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-19 05:20:04,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-19 05:20:04,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 05:20:04,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-19 05:20:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 05:20:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 05:20:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-19 05:20:04,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-19 05:20:04,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-19 05:20:04,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-19 05:20:04,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-19 05:20:04,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-19 05:20:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-19 05:20:04,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-08-19 05:20:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-08-19 05:20:04,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-08-19 05:20:04,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-08-19 05:20:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-08-19 05:20:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-19 05:20:04,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-19 05:20:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-08-19 05:20:04,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-08-19 05:20:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-08-19 05:20:04,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-19 05:20:04,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-19 05:20:04,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-19 05:20:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-19 05:20:04,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-08-19 05:20:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-19 05:20:04,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-19 05:20:04,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-19 05:20:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-19 05:20:04,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-08-19 05:20:04,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-08-19 05:20:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-08-19 05:20:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-19 05:20:04,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-19 05:20:04,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-19 05:20:04,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-19 05:20:04,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:04,796 INFO L134 CoverageAnalysis]: Checked inductivity of 14212 backedges. 3869 proven. 1294 refuted. 0 times theorem prover too weak. 9049 trivial. 0 not checked. [2020-08-19 05:20:04,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693925206] [2020-08-19 05:20:04,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:04,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 05:20:04,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893459117] [2020-08-19 05:20:04,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 05:20:04,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:04,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 05:20:04,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-08-19 05:20:04,798 INFO L87 Difference]: Start difference. First operand 412 states and 473 transitions. Second operand 12 states. [2020-08-19 05:20:05,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:05,303 INFO L93 Difference]: Finished difference Result 611 states and 701 transitions. [2020-08-19 05:20:05,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-19 05:20:05,304 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 499 [2020-08-19 05:20:05,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:05,306 INFO L225 Difference]: With dead ends: 611 [2020-08-19 05:20:05,307 INFO L226 Difference]: Without dead ends: 412 [2020-08-19 05:20:05,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=247, Invalid=455, Unknown=0, NotChecked=0, Total=702 [2020-08-19 05:20:05,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-19 05:20:05,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2020-08-19 05:20:05,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-08-19 05:20:05,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 471 transitions. [2020-08-19 05:20:05,361 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 471 transitions. Word has length 499 [2020-08-19 05:20:05,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:05,361 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 471 transitions. [2020-08-19 05:20:05,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 05:20:05,362 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 471 transitions. [2020-08-19 05:20:05,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2020-08-19 05:20:05,366 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:05,366 INFO L422 BasicCegarLoop]: trace histogram [68, 68, 68, 67, 67, 67, 67, 15, 14, 14, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:05,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-19 05:20:05,367 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:05,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:05,367 INFO L82 PathProgramCache]: Analyzing trace with hash 206006162, now seen corresponding path program 26 times [2020-08-19 05:20:05,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:05,367 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687993343] [2020-08-19 05:20:05,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:05,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:20:05,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:20:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:20:05,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:20:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:20:05,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:20:05,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:20:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:20:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:20:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:20:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:20:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:20:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:20:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:20:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:20:05,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:20:05,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:20:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 05:20:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 05:20:05,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 05:20:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:20:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-19 05:20:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-19 05:20:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-19 05:20:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 05:20:05,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-19 05:20:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 05:20:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 05:20:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-19 05:20:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-19 05:20:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-19 05:20:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-19 05:20:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-19 05:20:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-19 05:20:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-19 05:20:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-19 05:20:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-19 05:20:05,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-19 05:20:05,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-19 05:20:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-08-19 05:20:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-19 05:20:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-19 05:20:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-19 05:20:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-08-19 05:20:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-08-19 05:20:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-19 05:20:05,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-19 05:20:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-19 05:20:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-19 05:20:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-08-19 05:20:05,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-19 05:20:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-19 05:20:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-19 05:20:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-19 05:20:05,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-08-19 05:20:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-08-19 05:20:05,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-08-19 05:20:05,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-19 05:20:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-19 05:20:05,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-19 05:20:05,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-08-19 05:20:05,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2020-08-19 05:20:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2020-08-19 05:20:05,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-08-19 05:20:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-08-19 05:20:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-19 05:20:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-19 05:20:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 17094 backedges. 4741 proven. 1771 refuted. 0 times theorem prover too weak. 10582 trivial. 0 not checked. [2020-08-19 05:20:05,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687993343] [2020-08-19 05:20:05,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:05,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 05:20:05,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080442779] [2020-08-19 05:20:05,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 05:20:05,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:05,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 05:20:05,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-08-19 05:20:05,945 INFO L87 Difference]: Start difference. First operand 412 states and 471 transitions. Second operand 19 states. [2020-08-19 05:20:07,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:07,206 INFO L93 Difference]: Finished difference Result 617 states and 706 transitions. [2020-08-19 05:20:07,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-19 05:20:07,207 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 544 [2020-08-19 05:20:07,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:07,210 INFO L225 Difference]: With dead ends: 617 [2020-08-19 05:20:07,210 INFO L226 Difference]: Without dead ends: 416 [2020-08-19 05:20:07,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=965, Invalid=1897, Unknown=0, NotChecked=0, Total=2862 [2020-08-19 05:20:07,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-08-19 05:20:07,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2020-08-19 05:20:07,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-19 05:20:07,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 474 transitions. [2020-08-19 05:20:07,263 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 474 transitions. Word has length 544 [2020-08-19 05:20:07,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:07,264 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 474 transitions. [2020-08-19 05:20:07,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 05:20:07,264 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 474 transitions. [2020-08-19 05:20:07,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2020-08-19 05:20:07,268 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:07,268 INFO L422 BasicCegarLoop]: trace histogram [70, 70, 70, 69, 69, 69, 69, 15, 14, 14, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:07,268 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-19 05:20:07,269 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:07,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:07,269 INFO L82 PathProgramCache]: Analyzing trace with hash 22704138, now seen corresponding path program 27 times [2020-08-19 05:20:07,269 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:07,269 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [911735095] [2020-08-19 05:20:07,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:20:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:20:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:20:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:20:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:20:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:20:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:20:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:20:07,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:20:07,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:20:07,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:20:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:20:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:20:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:20:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:20:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:20:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:20:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 05:20:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 05:20:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 05:20:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:20:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-19 05:20:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-19 05:20:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-19 05:20:07,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 05:20:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-19 05:20:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 05:20:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 05:20:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-19 05:20:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-19 05:20:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-19 05:20:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-19 05:20:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-19 05:20:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-19 05:20:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-19 05:20:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-19 05:20:07,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-19 05:20:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-19 05:20:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-19 05:20:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-19 05:20:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-19 05:20:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-19 05:20:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-19 05:20:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-19 05:20:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-08-19 05:20:07,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-19 05:20:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-19 05:20:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-19 05:20:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-19 05:20:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-08-19 05:20:07,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-19 05:20:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-19 05:20:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-19 05:20:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-19 05:20:07,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-19 05:20:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-08-19 05:20:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-08-19 05:20:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-19 05:20:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-19 05:20:07,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-19 05:20:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-19 05:20:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-19 05:20:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2020-08-19 05:20:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-08-19 05:20:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-08-19 05:20:07,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-19 05:20:07,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-19 05:20:07,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-19 05:20:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-19 05:20:07,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:07,751 INFO L134 CoverageAnalysis]: Checked inductivity of 18075 backedges. 5945 proven. 607 refuted. 0 times theorem prover too weak. 11523 trivial. 0 not checked. [2020-08-19 05:20:07,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [911735095] [2020-08-19 05:20:07,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:07,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 05:20:07,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418300624] [2020-08-19 05:20:07,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 05:20:07,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:07,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 05:20:07,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-08-19 05:20:07,753 INFO L87 Difference]: Start difference. First operand 416 states and 474 transitions. Second operand 15 states. [2020-08-19 05:20:08,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:08,463 INFO L93 Difference]: Finished difference Result 618 states and 703 transitions. [2020-08-19 05:20:08,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 05:20:08,464 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 558 [2020-08-19 05:20:08,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:08,466 INFO L225 Difference]: With dead ends: 618 [2020-08-19 05:20:08,467 INFO L226 Difference]: Without dead ends: 417 [2020-08-19 05:20:08,468 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=341, Invalid=715, Unknown=0, NotChecked=0, Total=1056 [2020-08-19 05:20:08,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-19 05:20:08,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 416. [2020-08-19 05:20:08,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-19 05:20:08,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 473 transitions. [2020-08-19 05:20:08,523 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 473 transitions. Word has length 558 [2020-08-19 05:20:08,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:08,524 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 473 transitions. [2020-08-19 05:20:08,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 05:20:08,524 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 473 transitions. [2020-08-19 05:20:08,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2020-08-19 05:20:08,529 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:08,529 INFO L422 BasicCegarLoop]: trace histogram [71, 71, 71, 70, 70, 70, 70, 15, 14, 14, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:08,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-19 05:20:08,530 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:08,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:08,530 INFO L82 PathProgramCache]: Analyzing trace with hash -289471297, now seen corresponding path program 28 times [2020-08-19 05:20:08,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:08,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065354586] [2020-08-19 05:20:08,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:20:08,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:20:08,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:20:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:20:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:20:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:20:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:20:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:20:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:20:08,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:20:08,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:20:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:20:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:20:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:20:08,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:20:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:20:08,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:20:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 05:20:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 05:20:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 05:20:08,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:20:08,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-19 05:20:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-19 05:20:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-19 05:20:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 05:20:08,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-19 05:20:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 05:20:08,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 05:20:08,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-19 05:20:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-19 05:20:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-19 05:20:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-19 05:20:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-19 05:20:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-19 05:20:08,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-19 05:20:08,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-19 05:20:08,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-19 05:20:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-19 05:20:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-19 05:20:08,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-19 05:20:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-19 05:20:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-19 05:20:08,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-19 05:20:08,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-19 05:20:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-19 05:20:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-19 05:20:08,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-19 05:20:08,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-19 05:20:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-19 05:20:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-19 05:20:08,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-19 05:20:08,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-19 05:20:08,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-19 05:20:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-19 05:20:08,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-19 05:20:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-19 05:20:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-08-19 05:20:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-19 05:20:08,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:08,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-19 05:20:08,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:09,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-19 05:20:09,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:09,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-19 05:20:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:09,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-19 05:20:09,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:09,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-19 05:20:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:09,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-08-19 05:20:09,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:09,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-08-19 05:20:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:09,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-19 05:20:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:09,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-19 05:20:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:09,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-19 05:20:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:09,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-19 05:20:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:09,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-19 05:20:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:09,225 INFO L134 CoverageAnalysis]: Checked inductivity of 18576 backedges. 5565 proven. 1561 refuted. 0 times theorem prover too weak. 11450 trivial. 0 not checked. [2020-08-19 05:20:09,226 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065354586] [2020-08-19 05:20:09,226 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:09,226 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-19 05:20:09,226 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118945949] [2020-08-19 05:20:09,227 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-19 05:20:09,227 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:09,227 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-19 05:20:09,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-08-19 05:20:09,228 INFO L87 Difference]: Start difference. First operand 416 states and 473 transitions. Second operand 17 states. [2020-08-19 05:20:10,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:10,111 INFO L93 Difference]: Finished difference Result 618 states and 701 transitions. [2020-08-19 05:20:10,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-19 05:20:10,111 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 565 [2020-08-19 05:20:10,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:10,115 INFO L225 Difference]: With dead ends: 618 [2020-08-19 05:20:10,115 INFO L226 Difference]: Without dead ends: 417 [2020-08-19 05:20:10,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=568, Invalid=1154, Unknown=0, NotChecked=0, Total=1722 [2020-08-19 05:20:10,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-19 05:20:10,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 416. [2020-08-19 05:20:10,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-19 05:20:10,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 472 transitions. [2020-08-19 05:20:10,169 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 472 transitions. Word has length 565 [2020-08-19 05:20:10,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:10,169 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 472 transitions. [2020-08-19 05:20:10,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-19 05:20:10,169 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 472 transitions. [2020-08-19 05:20:10,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2020-08-19 05:20:10,173 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:10,174 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 72, 71, 71, 71, 71, 15, 14, 14, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:10,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-19 05:20:10,174 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:10,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:10,175 INFO L82 PathProgramCache]: Analyzing trace with hash 126799646, now seen corresponding path program 29 times [2020-08-19 05:20:10,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:10,175 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353184794] [2020-08-19 05:20:10,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:20:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:20:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:20:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:20:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:20:10,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:20:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:20:10,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:20:10,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:20:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:20:10,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:20:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:20:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:20:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:20:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:20:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:20:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:20:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 05:20:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 05:20:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 05:20:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:20:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-19 05:20:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-19 05:20:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-19 05:20:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 05:20:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-19 05:20:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 05:20:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 05:20:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-19 05:20:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-19 05:20:10,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-19 05:20:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-19 05:20:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-19 05:20:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-19 05:20:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-19 05:20:10,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-19 05:20:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-19 05:20:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-19 05:20:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-19 05:20:10,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-19 05:20:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-19 05:20:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-19 05:20:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-19 05:20:10,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-19 05:20:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-19 05:20:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-19 05:20:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-19 05:20:10,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-19 05:20:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-19 05:20:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-19 05:20:10,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-19 05:20:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-19 05:20:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-19 05:20:10,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-19 05:20:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-19 05:20:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-19 05:20:10,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-19 05:20:10,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-19 05:20:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-19 05:20:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-19 05:20:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-19 05:20:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-19 05:20:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-19 05:20:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-19 05:20:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-08-19 05:20:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-19 05:20:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-19 05:20:10,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-19 05:20:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-19 05:20:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-19 05:20:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-19 05:20:10,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:10,771 INFO L134 CoverageAnalysis]: Checked inductivity of 19084 backedges. 4945 proven. 2699 refuted. 0 times theorem prover too weak. 11440 trivial. 0 not checked. [2020-08-19 05:20:10,771 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353184794] [2020-08-19 05:20:10,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:10,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 05:20:10,772 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606328787] [2020-08-19 05:20:10,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 05:20:10,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:10,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 05:20:10,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-08-19 05:20:10,773 INFO L87 Difference]: Start difference. First operand 416 states and 472 transitions. Second operand 19 states. [2020-08-19 05:20:11,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:11,935 INFO L93 Difference]: Finished difference Result 620 states and 702 transitions. [2020-08-19 05:20:11,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-19 05:20:11,935 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 572 [2020-08-19 05:20:11,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:11,938 INFO L225 Difference]: With dead ends: 620 [2020-08-19 05:20:11,938 INFO L226 Difference]: Without dead ends: 419 [2020-08-19 05:20:11,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=886, Invalid=1766, Unknown=0, NotChecked=0, Total=2652 [2020-08-19 05:20:11,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-08-19 05:20:11,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 418. [2020-08-19 05:20:11,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-08-19 05:20:11,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 474 transitions. [2020-08-19 05:20:11,990 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 474 transitions. Word has length 572 [2020-08-19 05:20:11,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:11,991 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 474 transitions. [2020-08-19 05:20:11,991 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 05:20:11,991 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 474 transitions. [2020-08-19 05:20:11,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2020-08-19 05:20:11,996 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:11,996 INFO L422 BasicCegarLoop]: trace histogram [73, 73, 73, 72, 72, 72, 72, 15, 14, 14, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:11,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-19 05:20:11,996 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:11,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:11,997 INFO L82 PathProgramCache]: Analyzing trace with hash -847775853, now seen corresponding path program 30 times [2020-08-19 05:20:11,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:11,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [903513602] [2020-08-19 05:20:11,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:12,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:12,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:20:12,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:20:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:20:12,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:20:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:20:12,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:20:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:20:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:20:12,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:20:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:20:12,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:20:12,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:20:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:20:12,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:20:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:20:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:20:12,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:20:12,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 05:20:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 05:20:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 05:20:12,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:20:12,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-19 05:20:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-19 05:20:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-19 05:20:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 05:20:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-19 05:20:12,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 05:20:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 05:20:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-19 05:20:12,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-19 05:20:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-19 05:20:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-19 05:20:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-19 05:20:12,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-19 05:20:12,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-19 05:20:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-19 05:20:12,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-19 05:20:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-19 05:20:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-19 05:20:12,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-19 05:20:12,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-19 05:20:12,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-19 05:20:12,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-19 05:20:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-19 05:20:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-19 05:20:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-19 05:20:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-19 05:20:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-19 05:20:12,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-19 05:20:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-19 05:20:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-19 05:20:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-19 05:20:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-19 05:20:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-19 05:20:12,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-19 05:20:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-19 05:20:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-19 05:20:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-19 05:20:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-19 05:20:12,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-19 05:20:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-19 05:20:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-19 05:20:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-19 05:20:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-19 05:20:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-19 05:20:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-19 05:20:12,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-19 05:20:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-19 05:20:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-19 05:20:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-19 05:20:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-19 05:20:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-19 05:20:12,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:12,824 INFO L134 CoverageAnalysis]: Checked inductivity of 19599 backedges. 2008 proven. 5249 refuted. 0 times theorem prover too weak. 12342 trivial. 0 not checked. [2020-08-19 05:20:12,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [903513602] [2020-08-19 05:20:12,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:12,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-08-19 05:20:12,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181083757] [2020-08-19 05:20:12,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-19 05:20:12,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:12,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-19 05:20:12,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-08-19 05:20:12,827 INFO L87 Difference]: Start difference. First operand 418 states and 474 transitions. Second operand 20 states. [2020-08-19 05:20:13,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:13,559 INFO L93 Difference]: Finished difference Result 504 states and 565 transitions. [2020-08-19 05:20:13,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 05:20:13,559 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 579 [2020-08-19 05:20:13,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:13,563 INFO L225 Difference]: With dead ends: 504 [2020-08-19 05:20:13,563 INFO L226 Difference]: Without dead ends: 502 [2020-08-19 05:20:13,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=365, Invalid=1041, Unknown=0, NotChecked=0, Total=1406 [2020-08-19 05:20:13,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-08-19 05:20:13,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 478. [2020-08-19 05:20:13,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-19 05:20:13,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 538 transitions. [2020-08-19 05:20:13,621 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 538 transitions. Word has length 579 [2020-08-19 05:20:13,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:13,621 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 538 transitions. [2020-08-19 05:20:13,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-19 05:20:13,622 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 538 transitions. [2020-08-19 05:20:13,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2020-08-19 05:20:13,626 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:13,626 INFO L422 BasicCegarLoop]: trace histogram [74, 74, 74, 73, 73, 73, 73, 15, 14, 14, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:13,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-19 05:20:13,627 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:13,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:13,627 INFO L82 PathProgramCache]: Analyzing trace with hash 267632406, now seen corresponding path program 31 times [2020-08-19 05:20:13,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:13,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271088142] [2020-08-19 05:20:13,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:13,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:20:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:20:13,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:20:13,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:20:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:20:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:20:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:20:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:20:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:20:13,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:20:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:20:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:20:13,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:20:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:20:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:20:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:20:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:20:13,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 05:20:13,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 05:20:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 05:20:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:20:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-19 05:20:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-19 05:20:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-19 05:20:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:13,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 05:20:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-19 05:20:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 05:20:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 05:20:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-19 05:20:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-19 05:20:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-19 05:20:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-19 05:20:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-19 05:20:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-19 05:20:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-19 05:20:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-19 05:20:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-19 05:20:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-19 05:20:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-19 05:20:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-19 05:20:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-19 05:20:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-19 05:20:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-19 05:20:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-19 05:20:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-19 05:20:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-19 05:20:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-19 05:20:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-19 05:20:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-19 05:20:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-19 05:20:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-19 05:20:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-19 05:20:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-19 05:20:14,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-19 05:20:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-19 05:20:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-19 05:20:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-19 05:20:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-19 05:20:14,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-19 05:20:14,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-19 05:20:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-19 05:20:14,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-19 05:20:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-19 05:20:14,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-19 05:20:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-19 05:20:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-19 05:20:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-19 05:20:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-19 05:20:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-19 05:20:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-19 05:20:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-19 05:20:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-19 05:20:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-19 05:20:14,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:14,257 INFO L134 CoverageAnalysis]: Checked inductivity of 20121 backedges. 4227 proven. 4030 refuted. 0 times theorem prover too weak. 11864 trivial. 0 not checked. [2020-08-19 05:20:14,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271088142] [2020-08-19 05:20:14,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:14,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-19 05:20:14,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131890830] [2020-08-19 05:20:14,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-19 05:20:14,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:14,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-19 05:20:14,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2020-08-19 05:20:14,259 INFO L87 Difference]: Start difference. First operand 478 states and 538 transitions. Second operand 21 states. [2020-08-19 05:20:15,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:15,864 INFO L93 Difference]: Finished difference Result 714 states and 810 transitions. [2020-08-19 05:20:15,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-19 05:20:15,864 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 586 [2020-08-19 05:20:15,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:15,867 INFO L225 Difference]: With dead ends: 714 [2020-08-19 05:20:15,867 INFO L226 Difference]: Without dead ends: 479 [2020-08-19 05:20:15,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1311, Invalid=2595, Unknown=0, NotChecked=0, Total=3906 [2020-08-19 05:20:15,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-08-19 05:20:15,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 478. [2020-08-19 05:20:15,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-19 05:20:15,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 536 transitions. [2020-08-19 05:20:15,925 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 536 transitions. Word has length 586 [2020-08-19 05:20:15,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:15,926 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 536 transitions. [2020-08-19 05:20:15,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-19 05:20:15,926 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 536 transitions. [2020-08-19 05:20:15,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2020-08-19 05:20:15,931 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:15,931 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 75, 74, 74, 74, 74, 15, 14, 14, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:15,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-19 05:20:15,932 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:15,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:15,932 INFO L82 PathProgramCache]: Analyzing trace with hash -1197037185, now seen corresponding path program 32 times [2020-08-19 05:20:15,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:15,932 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037721100] [2020-08-19 05:20:15,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:16,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:20:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:20:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:20:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:20:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:20:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:20:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:20:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:20:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:20:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:20:16,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:20:16,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:20:16,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:20:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:20:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:20:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:20:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:20:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 05:20:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 05:20:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 05:20:16,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:20:16,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-19 05:20:16,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-19 05:20:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-19 05:20:16,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 05:20:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-19 05:20:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 05:20:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 05:20:16,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-19 05:20:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-19 05:20:16,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-19 05:20:16,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-19 05:20:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-19 05:20:16,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-19 05:20:16,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-19 05:20:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-19 05:20:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-19 05:20:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-19 05:20:16,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-19 05:20:16,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-19 05:20:16,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-19 05:20:16,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-19 05:20:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-19 05:20:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-19 05:20:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-19 05:20:16,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-19 05:20:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-19 05:20:16,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-19 05:20:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-19 05:20:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-19 05:20:16,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-19 05:20:16,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-19 05:20:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-19 05:20:16,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-19 05:20:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-19 05:20:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-19 05:20:16,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-19 05:20:16,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-19 05:20:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-19 05:20:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-19 05:20:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-19 05:20:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-19 05:20:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-19 05:20:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-19 05:20:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-19 05:20:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-19 05:20:16,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-19 05:20:16,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-19 05:20:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-19 05:20:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-19 05:20:16,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-19 05:20:16,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-19 05:20:16,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-19 05:20:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-19 05:20:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:16,892 INFO L134 CoverageAnalysis]: Checked inductivity of 20650 backedges. 2012 proven. 5637 refuted. 0 times theorem prover too weak. 13001 trivial. 0 not checked. [2020-08-19 05:20:16,892 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037721100] [2020-08-19 05:20:16,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:16,893 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-19 05:20:16,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141788588] [2020-08-19 05:20:16,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-19 05:20:16,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:16,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-19 05:20:16,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-08-19 05:20:16,897 INFO L87 Difference]: Start difference. First operand 478 states and 536 transitions. Second operand 21 states. [2020-08-19 05:20:17,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:17,677 INFO L93 Difference]: Finished difference Result 537 states and 603 transitions. [2020-08-19 05:20:17,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-19 05:20:17,678 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 593 [2020-08-19 05:20:17,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:17,681 INFO L225 Difference]: With dead ends: 537 [2020-08-19 05:20:17,681 INFO L226 Difference]: Without dead ends: 535 [2020-08-19 05:20:17,682 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=409, Invalid=1151, Unknown=0, NotChecked=0, Total=1560 [2020-08-19 05:20:17,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-08-19 05:20:17,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 505. [2020-08-19 05:20:17,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2020-08-19 05:20:17,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 570 transitions. [2020-08-19 05:20:17,744 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 570 transitions. Word has length 593 [2020-08-19 05:20:17,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:17,745 INFO L479 AbstractCegarLoop]: Abstraction has 505 states and 570 transitions. [2020-08-19 05:20:17,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-19 05:20:17,745 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 570 transitions. [2020-08-19 05:20:17,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2020-08-19 05:20:17,750 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:17,750 INFO L422 BasicCegarLoop]: trace histogram [76, 76, 76, 75, 75, 75, 75, 15, 14, 14, 6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:17,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-08-19 05:20:17,750 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:17,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:17,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1218530218, now seen corresponding path program 33 times [2020-08-19 05:20:17,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:17,751 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243963981] [2020-08-19 05:20:17,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:18,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:20:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:20:18,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:20:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:20:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:20:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:20:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:20:18,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:20:18,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:20:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:20:18,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:20:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:20:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:20:18,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:20:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:20:18,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:20:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:20:18,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 05:20:18,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 05:20:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 05:20:18,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:20:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-19 05:20:18,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-19 05:20:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-19 05:20:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 05:20:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-19 05:20:18,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 05:20:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 05:20:18,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-19 05:20:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-19 05:20:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-19 05:20:18,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-19 05:20:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-19 05:20:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-19 05:20:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-19 05:20:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-19 05:20:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-19 05:20:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-19 05:20:18,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-19 05:20:18,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-19 05:20:18,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-19 05:20:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-19 05:20:18,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-19 05:20:18,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-19 05:20:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-19 05:20:18,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-19 05:20:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-19 05:20:18,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-19 05:20:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-19 05:20:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-19 05:20:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-19 05:20:18,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-19 05:20:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-19 05:20:18,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-19 05:20:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-19 05:20:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-19 05:20:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-19 05:20:18,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-19 05:20:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-19 05:20:18,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-19 05:20:18,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-19 05:20:18,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-19 05:20:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-19 05:20:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-19 05:20:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-19 05:20:18,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-19 05:20:18,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-19 05:20:18,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-19 05:20:18,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-19 05:20:18,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-19 05:20:18,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-19 05:20:18,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-19 05:20:18,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-19 05:20:18,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-19 05:20:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-08-19 05:20:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:18,448 INFO L134 CoverageAnalysis]: Checked inductivity of 21186 backedges. 342 proven. 8400 refuted. 0 times theorem prover too weak. 12444 trivial. 0 not checked. [2020-08-19 05:20:18,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243963981] [2020-08-19 05:20:18,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:18,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-08-19 05:20:18,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709624760] [2020-08-19 05:20:18,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-08-19 05:20:18,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:18,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-08-19 05:20:18,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2020-08-19 05:20:18,450 INFO L87 Difference]: Start difference. First operand 505 states and 570 transitions. Second operand 24 states. [2020-08-19 05:20:21,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:21,583 INFO L93 Difference]: Finished difference Result 898 states and 1049 transitions. [2020-08-19 05:20:21,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-08-19 05:20:21,585 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 600 [2020-08-19 05:20:21,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:21,588 INFO L225 Difference]: With dead ends: 898 [2020-08-19 05:20:21,588 INFO L226 Difference]: Without dead ends: 631 [2020-08-19 05:20:21,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5052 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=3553, Invalid=8879, Unknown=0, NotChecked=0, Total=12432 [2020-08-19 05:20:21,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-08-19 05:20:21,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 628. [2020-08-19 05:20:21,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-08-19 05:20:21,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 730 transitions. [2020-08-19 05:20:21,671 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 730 transitions. Word has length 600 [2020-08-19 05:20:21,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:21,672 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 730 transitions. [2020-08-19 05:20:21,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-08-19 05:20:21,672 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 730 transitions. [2020-08-19 05:20:21,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2020-08-19 05:20:21,681 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:21,681 INFO L422 BasicCegarLoop]: trace histogram [110, 110, 110, 109, 109, 109, 109, 20, 19, 19, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:21,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-08-19 05:20:21,682 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:21,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:21,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1731219376, now seen corresponding path program 34 times [2020-08-19 05:20:21,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:21,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582734341] [2020-08-19 05:20:21,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:20:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:20:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:20:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:20:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:20:22,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:20:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:20:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:20:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:20:22,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:20:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:20:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:20:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:20:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:20:22,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:20:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:20:22,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:20:22,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 05:20:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 05:20:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 05:20:22,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:20:22,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-19 05:20:22,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-19 05:20:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-19 05:20:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 05:20:22,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-19 05:20:22,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 05:20:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 05:20:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-19 05:20:22,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-19 05:20:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-19 05:20:22,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-19 05:20:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-19 05:20:22,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-19 05:20:22,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-19 05:20:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-19 05:20:22,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-19 05:20:22,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-19 05:20:22,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-19 05:20:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-19 05:20:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-19 05:20:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-19 05:20:22,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-19 05:20:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-19 05:20:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-19 05:20:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-19 05:20:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-19 05:20:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-19 05:20:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-19 05:20:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-19 05:20:22,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-19 05:20:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-19 05:20:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-19 05:20:22,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-19 05:20:22,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-19 05:20:22,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-19 05:20:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-19 05:20:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-19 05:20:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-19 05:20:22,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-19 05:20:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-19 05:20:22,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-19 05:20:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-19 05:20:22,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-19 05:20:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-19 05:20:22,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-19 05:20:22,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-19 05:20:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-19 05:20:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-19 05:20:22,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-19 05:20:22,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-19 05:20:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-19 05:20:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-19 05:20:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-19 05:20:22,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2020-08-19 05:20:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-08-19 05:20:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-08-19 05:20:22,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-08-19 05:20:22,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-08-19 05:20:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-08-19 05:20:22,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 640 [2020-08-19 05:20:22,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-08-19 05:20:22,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-08-19 05:20:22,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-08-19 05:20:22,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-08-19 05:20:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-08-19 05:20:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 685 [2020-08-19 05:20:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-08-19 05:20:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-08-19 05:20:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-08-19 05:20:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2020-08-19 05:20:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2020-08-19 05:20:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 730 [2020-08-19 05:20:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 737 [2020-08-19 05:20:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 744 [2020-08-19 05:20:22,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-08-19 05:20:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-08-19 05:20:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-08-19 05:20:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2020-08-19 05:20:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-08-19 05:20:22,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 789 [2020-08-19 05:20:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-08-19 05:20:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 803 [2020-08-19 05:20:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 810 [2020-08-19 05:20:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2020-08-19 05:20:22,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 824 [2020-08-19 05:20:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-08-19 05:20:22,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-08-19 05:20:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 845 [2020-08-19 05:20:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:22,976 INFO L134 CoverageAnalysis]: Checked inductivity of 44431 backedges. 11950 proven. 5563 refuted. 0 times theorem prover too weak. 26918 trivial. 0 not checked. [2020-08-19 05:20:22,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582734341] [2020-08-19 05:20:22,977 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:22,977 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-19 05:20:22,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110403101] [2020-08-19 05:20:22,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-19 05:20:22,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:22,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-19 05:20:22,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2020-08-19 05:20:22,979 INFO L87 Difference]: Start difference. First operand 628 states and 730 transitions. Second operand 23 states. [2020-08-19 05:20:25,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:25,203 INFO L93 Difference]: Finished difference Result 923 states and 1077 transitions. [2020-08-19 05:20:25,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-08-19 05:20:25,204 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 856 [2020-08-19 05:20:25,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:25,207 INFO L225 Difference]: With dead ends: 923 [2020-08-19 05:20:25,207 INFO L226 Difference]: Without dead ends: 631 [2020-08-19 05:20:25,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 959 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1873, Invalid=3677, Unknown=0, NotChecked=0, Total=5550 [2020-08-19 05:20:25,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-08-19 05:20:25,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 628. [2020-08-19 05:20:25,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-08-19 05:20:25,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 728 transitions. [2020-08-19 05:20:25,289 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 728 transitions. Word has length 856 [2020-08-19 05:20:25,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:25,290 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 728 transitions. [2020-08-19 05:20:25,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-08-19 05:20:25,290 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 728 transitions. [2020-08-19 05:20:25,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 864 [2020-08-19 05:20:25,298 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:25,299 INFO L422 BasicCegarLoop]: trace histogram [111, 111, 111, 110, 110, 110, 110, 20, 19, 19, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:25,299 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-08-19 05:20:25,299 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:25,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:25,300 INFO L82 PathProgramCache]: Analyzing trace with hash 2044024613, now seen corresponding path program 35 times [2020-08-19 05:20:25,300 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:25,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1976947056] [2020-08-19 05:20:25,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:25,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:20:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:20:25,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:20:25,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:20:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:20:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:20:25,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:20:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:20:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:20:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:20:25,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:20:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:20:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:20:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:20:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:20:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:20:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:20:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 05:20:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 05:20:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 05:20:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:20:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-19 05:20:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-19 05:20:25,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-19 05:20:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 05:20:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-19 05:20:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 05:20:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 05:20:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-19 05:20:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-19 05:20:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-19 05:20:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-19 05:20:25,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-19 05:20:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-19 05:20:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-19 05:20:25,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-19 05:20:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-19 05:20:25,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-19 05:20:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-19 05:20:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-19 05:20:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-19 05:20:25,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-19 05:20:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-19 05:20:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-19 05:20:25,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-19 05:20:25,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-19 05:20:25,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-19 05:20:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-19 05:20:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-19 05:20:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-19 05:20:25,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-19 05:20:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-19 05:20:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-19 05:20:25,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-19 05:20:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-19 05:20:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-19 05:20:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-19 05:20:25,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-19 05:20:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-19 05:20:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-19 05:20:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-19 05:20:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-19 05:20:25,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-19 05:20:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-19 05:20:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-19 05:20:25,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-19 05:20:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-19 05:20:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-19 05:20:25,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-19 05:20:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-19 05:20:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-19 05:20:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-19 05:20:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-19 05:20:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-19 05:20:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-08-19 05:20:25,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-08-19 05:20:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-08-19 05:20:25,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-08-19 05:20:25,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-08-19 05:20:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-08-19 05:20:25,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 640 [2020-08-19 05:20:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-08-19 05:20:25,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-08-19 05:20:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-08-19 05:20:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-08-19 05:20:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2020-08-19 05:20:25,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 685 [2020-08-19 05:20:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-08-19 05:20:25,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-08-19 05:20:25,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-08-19 05:20:25,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2020-08-19 05:20:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2020-08-19 05:20:25,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-08-19 05:20:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 737 [2020-08-19 05:20:25,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 744 [2020-08-19 05:20:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-08-19 05:20:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-08-19 05:20:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-08-19 05:20:25,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2020-08-19 05:20:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-08-19 05:20:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 786 [2020-08-19 05:20:25,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-08-19 05:20:25,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 803 [2020-08-19 05:20:25,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 810 [2020-08-19 05:20:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2020-08-19 05:20:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 824 [2020-08-19 05:20:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-08-19 05:20:25,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-08-19 05:20:25,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 845 [2020-08-19 05:20:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:25,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 852 [2020-08-19 05:20:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:26,190 INFO L134 CoverageAnalysis]: Checked inductivity of 45217 backedges. 15327 proven. 1346 refuted. 0 times theorem prover too weak. 28544 trivial. 0 not checked. [2020-08-19 05:20:26,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1976947056] [2020-08-19 05:20:26,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:26,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-19 05:20:26,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785629997] [2020-08-19 05:20:26,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-19 05:20:26,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:26,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-19 05:20:26,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-08-19 05:20:26,193 INFO L87 Difference]: Start difference. First operand 628 states and 728 transitions. Second operand 17 states. [2020-08-19 05:20:26,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:26,990 INFO L93 Difference]: Finished difference Result 1033 states and 1215 transitions. [2020-08-19 05:20:26,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-08-19 05:20:26,990 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 863 [2020-08-19 05:20:26,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:26,994 INFO L225 Difference]: With dead ends: 1033 [2020-08-19 05:20:26,994 INFO L226 Difference]: Without dead ends: 629 [2020-08-19 05:20:26,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=471, Invalid=1011, Unknown=0, NotChecked=0, Total=1482 [2020-08-19 05:20:26,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2020-08-19 05:20:27,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 628. [2020-08-19 05:20:27,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-08-19 05:20:27,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 726 transitions. [2020-08-19 05:20:27,081 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 726 transitions. Word has length 863 [2020-08-19 05:20:27,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:27,082 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 726 transitions. [2020-08-19 05:20:27,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-19 05:20:27,082 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 726 transitions. [2020-08-19 05:20:27,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2020-08-19 05:20:27,091 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:27,091 INFO L422 BasicCegarLoop]: trace histogram [112, 112, 112, 111, 111, 111, 111, 20, 19, 19, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:27,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-08-19 05:20:27,092 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:27,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:27,092 INFO L82 PathProgramCache]: Analyzing trace with hash -2034609596, now seen corresponding path program 36 times [2020-08-19 05:20:27,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:27,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575291378] [2020-08-19 05:20:27,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:27,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:20:27,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:20:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:20:27,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:20:27,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:20:27,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:20:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:20:27,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:20:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:20:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:20:27,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:20:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:20:27,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:20:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:20:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:20:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:20:27,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:20:27,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 05:20:27,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 05:20:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 05:20:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:20:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-19 05:20:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-19 05:20:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-19 05:20:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 05:20:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-19 05:20:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 05:20:27,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 05:20:27,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-19 05:20:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-19 05:20:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-19 05:20:27,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-19 05:20:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-19 05:20:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-19 05:20:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-19 05:20:27,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-19 05:20:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-19 05:20:27,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-19 05:20:27,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-19 05:20:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-19 05:20:27,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-19 05:20:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-19 05:20:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-19 05:20:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-19 05:20:27,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-19 05:20:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-19 05:20:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-19 05:20:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-19 05:20:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-19 05:20:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-19 05:20:27,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-19 05:20:27,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-19 05:20:27,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-19 05:20:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-19 05:20:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-19 05:20:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-19 05:20:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-19 05:20:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-19 05:20:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-19 05:20:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-19 05:20:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-19 05:20:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-19 05:20:27,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-19 05:20:27,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-19 05:20:27,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-19 05:20:27,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-19 05:20:27,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-19 05:20:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-19 05:20:27,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-19 05:20:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-19 05:20:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-19 05:20:27,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-19 05:20:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-19 05:20:27,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-19 05:20:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-08-19 05:20:27,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-08-19 05:20:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-08-19 05:20:27,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-08-19 05:20:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-08-19 05:20:27,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-08-19 05:20:27,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 637 [2020-08-19 05:20:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-08-19 05:20:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-08-19 05:20:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-08-19 05:20:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-08-19 05:20:27,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2020-08-19 05:20:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-08-19 05:20:27,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-08-19 05:20:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-08-19 05:20:27,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-08-19 05:20:27,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2020-08-19 05:20:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2020-08-19 05:20:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-08-19 05:20:27,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 734 [2020-08-19 05:20:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 744 [2020-08-19 05:20:27,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-08-19 05:20:27,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-08-19 05:20:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-08-19 05:20:27,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2020-08-19 05:20:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-08-19 05:20:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 786 [2020-08-19 05:20:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 793 [2020-08-19 05:20:27,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 803 [2020-08-19 05:20:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 810 [2020-08-19 05:20:27,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2020-08-19 05:20:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 824 [2020-08-19 05:20:27,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-08-19 05:20:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-08-19 05:20:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 845 [2020-08-19 05:20:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 852 [2020-08-19 05:20:27,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-08-19 05:20:27,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:27,943 INFO L134 CoverageAnalysis]: Checked inductivity of 46010 backedges. 14226 proven. 3289 refuted. 0 times theorem prover too weak. 28495 trivial. 0 not checked. [2020-08-19 05:20:27,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575291378] [2020-08-19 05:20:27,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:27,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-19 05:20:27,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92322057] [2020-08-19 05:20:27,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-19 05:20:27,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:27,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-19 05:20:27,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-08-19 05:20:27,945 INFO L87 Difference]: Start difference. First operand 628 states and 726 transitions. Second operand 19 states. [2020-08-19 05:20:29,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:29,081 INFO L93 Difference]: Finished difference Result 891 states and 1028 transitions. [2020-08-19 05:20:29,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-08-19 05:20:29,082 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 870 [2020-08-19 05:20:29,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:29,086 INFO L225 Difference]: With dead ends: 891 [2020-08-19 05:20:29,086 INFO L226 Difference]: Without dead ends: 629 [2020-08-19 05:20:29,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 225 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=774, Invalid=1578, Unknown=0, NotChecked=0, Total=2352 [2020-08-19 05:20:29,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2020-08-19 05:20:29,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 628. [2020-08-19 05:20:29,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-08-19 05:20:29,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 725 transitions. [2020-08-19 05:20:29,166 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 725 transitions. Word has length 870 [2020-08-19 05:20:29,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:29,167 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 725 transitions. [2020-08-19 05:20:29,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-19 05:20:29,168 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 725 transitions. [2020-08-19 05:20:29,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 878 [2020-08-19 05:20:29,176 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:29,176 INFO L422 BasicCegarLoop]: trace histogram [113, 113, 113, 112, 112, 112, 112, 20, 19, 19, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:29,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-08-19 05:20:29,177 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:29,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:29,177 INFO L82 PathProgramCache]: Analyzing trace with hash -206805743, now seen corresponding path program 37 times [2020-08-19 05:20:29,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:29,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433412039] [2020-08-19 05:20:29,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:29,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:29,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:20:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:20:29,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:20:29,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:20:29,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:20:29,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:20:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:20:29,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:20:29,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:20:29,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:20:29,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:20:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:20:29,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:20:29,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:20:29,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:20:29,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:20:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:20:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 05:20:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 05:20:29,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 05:20:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:20:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-19 05:20:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-19 05:20:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-19 05:20:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 05:20:29,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-19 05:20:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 05:20:29,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 05:20:29,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-19 05:20:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-19 05:20:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-19 05:20:29,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-19 05:20:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-19 05:20:29,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-19 05:20:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-19 05:20:29,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-19 05:20:29,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-19 05:20:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-19 05:20:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-19 05:20:29,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-19 05:20:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-19 05:20:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-19 05:20:29,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-19 05:20:29,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-19 05:20:29,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-19 05:20:29,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-19 05:20:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-19 05:20:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-19 05:20:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-19 05:20:29,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-19 05:20:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-19 05:20:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-19 05:20:29,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-19 05:20:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-19 05:20:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-19 05:20:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-19 05:20:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-19 05:20:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-19 05:20:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-19 05:20:29,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-19 05:20:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-19 05:20:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-19 05:20:29,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-19 05:20:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-19 05:20:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-19 05:20:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-19 05:20:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-19 05:20:29,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-19 05:20:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-19 05:20:29,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-19 05:20:29,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-19 05:20:29,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-19 05:20:29,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-19 05:20:29,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-19 05:20:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-08-19 05:20:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-08-19 05:20:29,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-08-19 05:20:29,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-08-19 05:20:29,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-08-19 05:20:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-08-19 05:20:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 637 [2020-08-19 05:20:29,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-08-19 05:20:29,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-08-19 05:20:29,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-08-19 05:20:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-08-19 05:20:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2020-08-19 05:20:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-08-19 05:20:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 689 [2020-08-19 05:20:29,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-08-19 05:20:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-08-19 05:20:29,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2020-08-19 05:20:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2020-08-19 05:20:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-08-19 05:20:29,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 734 [2020-08-19 05:20:29,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 741 [2020-08-19 05:20:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-08-19 05:20:29,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-08-19 05:20:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-08-19 05:20:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2020-08-19 05:20:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-08-19 05:20:29,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 786 [2020-08-19 05:20:29,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 793 [2020-08-19 05:20:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 800 [2020-08-19 05:20:29,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 810 [2020-08-19 05:20:29,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2020-08-19 05:20:29,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 824 [2020-08-19 05:20:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-08-19 05:20:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-08-19 05:20:29,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 845 [2020-08-19 05:20:29,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 852 [2020-08-19 05:20:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-08-19 05:20:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:29,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 866 [2020-08-19 05:20:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:30,096 INFO L134 CoverageAnalysis]: Checked inductivity of 46810 backedges. 12737 proven. 5535 refuted. 0 times theorem prover too weak. 28538 trivial. 0 not checked. [2020-08-19 05:20:30,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433412039] [2020-08-19 05:20:30,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:30,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-19 05:20:30,097 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262001802] [2020-08-19 05:20:30,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-19 05:20:30,098 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:30,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-19 05:20:30,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=329, Unknown=0, NotChecked=0, Total=420 [2020-08-19 05:20:30,099 INFO L87 Difference]: Start difference. First operand 628 states and 725 transitions. Second operand 21 states. [2020-08-19 05:20:31,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 05:20:31,769 INFO L93 Difference]: Finished difference Result 891 states and 1026 transitions. [2020-08-19 05:20:31,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-08-19 05:20:31,770 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 877 [2020-08-19 05:20:31,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 05:20:31,774 INFO L225 Difference]: With dead ends: 891 [2020-08-19 05:20:31,774 INFO L226 Difference]: Without dead ends: 629 [2020-08-19 05:20:31,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 483 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1172, Invalid=2368, Unknown=0, NotChecked=0, Total=3540 [2020-08-19 05:20:31,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 629 states. [2020-08-19 05:20:31,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 629 to 628. [2020-08-19 05:20:31,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-08-19 05:20:31,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 724 transitions. [2020-08-19 05:20:31,859 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 724 transitions. Word has length 877 [2020-08-19 05:20:31,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 05:20:31,860 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 724 transitions. [2020-08-19 05:20:31,861 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-19 05:20:31,861 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 724 transitions. [2020-08-19 05:20:31,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 885 [2020-08-19 05:20:31,869 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 05:20:31,869 INFO L422 BasicCegarLoop]: trace histogram [114, 114, 114, 113, 113, 113, 113, 20, 19, 19, 7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 05:20:31,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-08-19 05:20:31,870 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 05:20:31,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 05:20:31,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1882081448, now seen corresponding path program 38 times [2020-08-19 05:20:31,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 05:20:31,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315441368] [2020-08-19 05:20:31,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 05:20:32,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 05:20:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 05:20:32,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-19 05:20:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-19 05:20:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-19 05:20:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-19 05:20:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-19 05:20:32,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-19 05:20:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-19 05:20:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-19 05:20:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-19 05:20:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-19 05:20:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-19 05:20:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-19 05:20:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-19 05:20:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-19 05:20:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-19 05:20:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-19 05:20:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-19 05:20:32,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-19 05:20:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-19 05:20:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-19 05:20:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-19 05:20:32,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-19 05:20:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-19 05:20:32,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-19 05:20:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-19 05:20:32,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-19 05:20:32,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-19 05:20:32,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-19 05:20:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-19 05:20:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-19 05:20:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-19 05:20:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-19 05:20:32,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-19 05:20:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-19 05:20:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-19 05:20:32,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-19 05:20:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-19 05:20:32,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-19 05:20:32,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-19 05:20:32,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-19 05:20:32,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-19 05:20:32,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-19 05:20:32,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-19 05:20:32,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-19 05:20:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-19 05:20:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-19 05:20:32,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-19 05:20:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-19 05:20:32,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-19 05:20:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-19 05:20:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-19 05:20:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-19 05:20:32,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-19 05:20:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-19 05:20:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-19 05:20:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-19 05:20:32,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-19 05:20:32,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-19 05:20:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-19 05:20:32,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-19 05:20:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-19 05:20:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-19 05:20:32,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-19 05:20:32,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-19 05:20:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-19 05:20:32,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-19 05:20:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-19 05:20:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-19 05:20:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-19 05:20:32,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-19 05:20:32,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-19 05:20:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-19 05:20:32,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-19 05:20:32,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-08-19 05:20:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-08-19 05:20:32,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-08-19 05:20:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-08-19 05:20:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-08-19 05:20:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 630 [2020-08-19 05:20:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 637 [2020-08-19 05:20:32,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-08-19 05:20:32,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-08-19 05:20:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-08-19 05:20:32,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-08-19 05:20:32,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2020-08-19 05:20:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-08-19 05:20:32,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 689 [2020-08-19 05:20:32,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-08-19 05:20:32,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-08-19 05:20:32,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2020-08-19 05:20:32,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2020-08-19 05:20:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 727 [2020-08-19 05:20:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 734 [2020-08-19 05:20:32,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 741 [2020-08-19 05:20:32,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 748 [2020-08-19 05:20:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-08-19 05:20:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-08-19 05:20:32,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2020-08-19 05:20:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-08-19 05:20:32,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 786 [2020-08-19 05:20:32,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 793 [2020-08-19 05:20:32,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 800 [2020-08-19 05:20:32,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 807 [2020-08-19 05:20:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2020-08-19 05:20:32,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 824 [2020-08-19 05:20:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-08-19 05:20:32,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-08-19 05:20:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 845 [2020-08-19 05:20:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 852 [2020-08-19 05:20:32,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-08-19 05:20:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 866 [2020-08-19 05:20:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 873 [2020-08-19 05:20:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 05:20:32,894 INFO L134 CoverageAnalysis]: Checked inductivity of 47617 backedges. 10782 proven. 8093 refuted. 0 times theorem prover too weak. 28742 trivial. 0 not checked. [2020-08-19 05:20:32,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315441368] [2020-08-19 05:20:32,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 05:20:32,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-19 05:20:32,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187459294] [2020-08-19 05:20:32,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-19 05:20:32,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 05:20:32,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-19 05:20:32,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2020-08-19 05:20:32,896 INFO L87 Difference]: Start difference. First operand 628 states and 724 transitions. Second operand 23 states.