/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 false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/nested9.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:59:21,451 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:59:21,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:59:21,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:59:21,505 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:59:21,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:59:21,519 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:59:21,523 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:59:21,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:59:21,530 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:59:21,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:59:21,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:59:21,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:59:21,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:59:21,542 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:59:21,544 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:59:21,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:59:21,548 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:59:21,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:59:21,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:59:21,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:59:21,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:59:21,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:59:21,566 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:59:21,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-27 21:59:21,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-27 21:59:21,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-27 21:59:21,575 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-27 21:59:21,576 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-27 21:59:21,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-27 21:59:21,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:59:21,585 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:59:21,587 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:59:21,588 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 [2020-08-27 21:59:21,635 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:59:21,635 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:59:21,637 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:59:21,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:59:21,638 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:59:21,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:59:21,639 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:59:21,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:59:21,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:59:21,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:59:21,640 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:59:21,641 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:59:21,641 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:59:21,641 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:59:21,642 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:59:21,642 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:59:21,642 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:59:21,642 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:59:21,642 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:59:21,642 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:59:21,643 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:59:21,643 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:59:21,643 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:59:21,643 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:59:21,643 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:59:21,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:59:21,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:59:21,644 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:59:21,644 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:59:21,645 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 -> false [2020-08-27 21:59:22,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:59:22,119 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:59:22,123 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:59:22,125 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:59:22,126 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:59:22,127 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested9.i [2020-08-27 21:59:22,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/699bc2477/f06f4205d3dc4b23a5c728a628fe1b4f/FLAGff511939a [2020-08-27 21:59:22,772 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:59:22,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/nested9.i [2020-08-27 21:59:22,780 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/699bc2477/f06f4205d3dc4b23a5c728a628fe1b4f/FLAGff511939a [2020-08-27 21:59:23,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/699bc2477/f06f4205d3dc4b23a5c728a628fe1b4f [2020-08-27 21:59:23,139 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:59:23,141 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:59:23,142 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:59:23,142 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:59:23,146 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:59:23,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:59:23" (1/1) ... [2020-08-27 21:59:23,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3786b6a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:59:23, skipping insertion in model container [2020-08-27 21:59:23,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:59:23" (1/1) ... [2020-08-27 21:59:23,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:59:23,195 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:59:23,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:59:23,499 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:59:23,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:59:23,544 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:59:23,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:59:23 WrapperNode [2020-08-27 21:59:23,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:59:23,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:59:23,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:59:23,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:59:23,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:59:23" (1/1) ... [2020-08-27 21:59:23,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:59:23" (1/1) ... [2020-08-27 21:59:23,705 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:59:23" (1/1) ... [2020-08-27 21:59:23,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:59:23" (1/1) ... [2020-08-27 21:59:23,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:59:23" (1/1) ... [2020-08-27 21:59:23,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:59:23" (1/1) ... [2020-08-27 21:59:23,733 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:59:23" (1/1) ... [2020-08-27 21:59:23,737 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:59:23,738 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:59:23,738 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:59:23,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:59:23,740 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:59:23" (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 [2020-08-27 21:59:23,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:59:23,832 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:59:23,833 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-27 21:59:23,833 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-27 21:59:23,834 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:59:23,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:59:23,835 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-27 21:59:23,835 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-27 21:59:23,835 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-27 21:59:23,836 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-27 21:59:23,836 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:59:23,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:59:23,837 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:59:24,130 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:59:24,131 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-27 21:59:24,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:59:24 BoogieIcfgContainer [2020-08-27 21:59:24,136 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:59:24,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:59:24,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:59:24,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:59:24,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:59:23" (1/3) ... [2020-08-27 21:59:24,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f4dad64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:59:24, skipping insertion in model container [2020-08-27 21:59:24,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:59:23" (2/3) ... [2020-08-27 21:59:24,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f4dad64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:59:24, skipping insertion in model container [2020-08-27 21:59:24,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:59:24" (3/3) ... [2020-08-27 21:59:24,147 INFO L109 eAbstractionObserver]: Analyzing ICFG nested9.i [2020-08-27 21:59:24,160 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:59:24,177 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:59:24,241 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:59:24,286 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:59:24,286 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:59:24,286 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:59:24,287 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:59:24,287 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:59:24,287 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:59:24,287 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:59:24,287 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:59:24,308 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-08-27 21:59:24,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-27 21:59:24,316 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:24,317 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:59:24,317 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:24,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:24,324 INFO L82 PathProgramCache]: Analyzing trace with hash 1671060194, now seen corresponding path program 1 times [2020-08-27 21:59:24,333 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:24,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067569131] [2020-08-27 21:59:24,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:24,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:59:24,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067569131] [2020-08-27 21:59:24,667 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:59:24,667 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-27 21:59:24,668 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79975591] [2020-08-27 21:59:24,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-27 21:59:24,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:24,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-27 21:59:24,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-08-27 21:59:24,696 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 8 states. [2020-08-27 21:59:25,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:25,141 INFO L93 Difference]: Finished difference Result 68 states and 95 transitions. [2020-08-27 21:59:25,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-27 21:59:25,143 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-08-27 21:59:25,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:25,155 INFO L225 Difference]: With dead ends: 68 [2020-08-27 21:59:25,156 INFO L226 Difference]: Without dead ends: 36 [2020-08-27 21:59:25,161 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 [2020-08-27 21:59:25,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-27 21:59:25,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 30. [2020-08-27 21:59:25,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-27 21:59:25,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2020-08-27 21:59:25,222 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 18 [2020-08-27 21:59:25,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:25,223 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2020-08-27 21:59:25,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-27 21:59:25,223 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2020-08-27 21:59:25,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-27 21:59:25,224 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:25,225 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] [2020-08-27 21:59:25,225 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:59:25,225 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:25,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:25,226 INFO L82 PathProgramCache]: Analyzing trace with hash -764881689, now seen corresponding path program 1 times [2020-08-27 21:59:25,227 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:25,227 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [360190603] [2020-08-27 21:59:25,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:25,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:25,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:25,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:25,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-27 21:59:25,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:25,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-27 21:59:25,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [360190603] [2020-08-27 21:59:25,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:59:25,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-27 21:59:25,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997059813] [2020-08-27 21:59:25,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-27 21:59:25,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:25,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-27 21:59:25,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-27 21:59:25,331 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 6 states. [2020-08-27 21:59:25,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:25,526 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2020-08-27 21:59:25,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-27 21:59:25,527 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-08-27 21:59:25,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:25,531 INFO L225 Difference]: With dead ends: 57 [2020-08-27 21:59:25,532 INFO L226 Difference]: Without dead ends: 38 [2020-08-27 21:59:25,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-08-27 21:59:25,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-27 21:59:25,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2020-08-27 21:59:25,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-08-27 21:59:25,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-08-27 21:59:25,544 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 25 [2020-08-27 21:59:25,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:25,544 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-08-27 21:59:25,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-27 21:59:25,545 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-08-27 21:59:25,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-27 21:59:25,546 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:25,546 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] [2020-08-27 21:59:25,547 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:59:25,547 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:25,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:25,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1134636734, now seen corresponding path program 1 times [2020-08-27 21:59:25,548 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:25,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272181192] [2020-08-27 21:59:25,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:25,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:25,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:25,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:25,686 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:59:25,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272181192] [2020-08-27 21:59:25,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:25,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-27 21:59:25,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894658574] [2020-08-27 21:59:25,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-27 21:59:25,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:25,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-27 21:59:25,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-08-27 21:59:25,692 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 7 states. [2020-08-27 21:59:25,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:25,996 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2020-08-27 21:59:25,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-27 21:59:25,996 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-08-27 21:59:25,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:25,998 INFO L225 Difference]: With dead ends: 70 [2020-08-27 21:59:25,998 INFO L226 Difference]: Without dead ends: 51 [2020-08-27 21:59:26,000 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 [2020-08-27 21:59:26,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-27 21:59:26,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 42. [2020-08-27 21:59:26,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-27 21:59:26,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-08-27 21:59:26,043 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 28 [2020-08-27 21:59:26,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:26,047 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-08-27 21:59:26,047 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-27 21:59:26,048 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-08-27 21:59:26,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-27 21:59:26,057 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:26,057 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] [2020-08-27 21:59:26,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-27 21:59:26,060 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:26,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:26,060 INFO L82 PathProgramCache]: Analyzing trace with hash 83931911, now seen corresponding path program 2 times [2020-08-27 21:59:26,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:26,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111409525] [2020-08-27 21:59:26,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:26,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:26,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-08-27 21:59:26,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:26,125 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-27 21:59:26,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111409525] [2020-08-27 21:59:26,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:26,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-27 21:59:26,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773473469] [2020-08-27 21:59:26,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-27 21:59:26,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:26,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-27 21:59:26,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-27 21:59:26,129 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 6 states. [2020-08-27 21:59:26,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:26,256 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-08-27 21:59:26,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-27 21:59:26,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-08-27 21:59:26,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:26,258 INFO L225 Difference]: With dead ends: 63 [2020-08-27 21:59:26,258 INFO L226 Difference]: Without dead ends: 44 [2020-08-27 21:59:26,259 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 [2020-08-27 21:59:26,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-27 21:59:26,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-08-27 21:59:26,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-27 21:59:26,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-08-27 21:59:26,270 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 31 [2020-08-27 21:59:26,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:26,271 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-08-27 21:59:26,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-27 21:59:26,271 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-08-27 21:59:26,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-27 21:59:26,273 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:26,273 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] [2020-08-27 21:59:26,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-27 21:59:26,273 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:26,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:26,274 INFO L82 PathProgramCache]: Analyzing trace with hash 848296232, now seen corresponding path program 1 times [2020-08-27 21:59:26,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:26,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079810801] [2020-08-27 21:59:26,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:26,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:26,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:26,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-27 21:59:26,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:26,357 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-08-27 21:59:26,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079810801] [2020-08-27 21:59:26,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:59:26,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-27 21:59:26,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729386737] [2020-08-27 21:59:26,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-27 21:59:26,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:26,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-27 21:59:26,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-27 21:59:26,363 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 5 states. [2020-08-27 21:59:26,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:26,465 INFO L93 Difference]: Finished difference Result 75 states and 89 transitions. [2020-08-27 21:59:26,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-27 21:59:26,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-08-27 21:59:26,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:26,467 INFO L225 Difference]: With dead ends: 75 [2020-08-27 21:59:26,468 INFO L226 Difference]: Without dead ends: 42 [2020-08-27 21:59:26,469 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 [2020-08-27 21:59:26,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-27 21:59:26,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-08-27 21:59:26,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-27 21:59:26,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-08-27 21:59:26,480 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 34 [2020-08-27 21:59:26,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:26,481 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-08-27 21:59:26,481 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-27 21:59:26,481 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-08-27 21:59:26,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-27 21:59:26,482 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:26,483 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] [2020-08-27 21:59:26,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-27 21:59:26,483 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:26,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:26,484 INFO L82 PathProgramCache]: Analyzing trace with hash -670641491, now seen corresponding path program 2 times [2020-08-27 21:59:26,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:26,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575648288] [2020-08-27 21:59:26,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:26,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:26,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:26,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:26,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:26,653 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 5 proven. 16 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-08-27 21:59:26,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575648288] [2020-08-27 21:59:26,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:26,656 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-27 21:59:26,657 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691701238] [2020-08-27 21:59:26,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-27 21:59:26,658 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:26,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-27 21:59:26,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:59:26,664 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 10 states. [2020-08-27 21:59:27,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:27,009 INFO L93 Difference]: Finished difference Result 60 states and 67 transitions. [2020-08-27 21:59:27,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-27 21:59:27,010 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-08-27 21:59:27,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:27,012 INFO L225 Difference]: With dead ends: 60 [2020-08-27 21:59:27,012 INFO L226 Difference]: Without dead ends: 58 [2020-08-27 21:59:27,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-08-27 21:59:27,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-27 21:59:27,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2020-08-27 21:59:27,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-08-27 21:59:27,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-08-27 21:59:27,025 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 41 [2020-08-27 21:59:27,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:27,026 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-08-27 21:59:27,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-27 21:59:27,026 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-08-27 21:59:27,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-27 21:59:27,028 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:27,028 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] [2020-08-27 21:59:27,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-27 21:59:27,029 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:27,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:27,029 INFO L82 PathProgramCache]: Analyzing trace with hash 2015935239, now seen corresponding path program 3 times [2020-08-27 21:59:27,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:27,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1890830179] [2020-08-27 21:59:27,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:27,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:27,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:27,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:27,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:27,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:27,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:59:27,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:27,161 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 7 proven. 23 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-08-27 21:59:27,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1890830179] [2020-08-27 21:59:27,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:27,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-27 21:59:27,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785992348] [2020-08-27 21:59:27,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-27 21:59:27,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:27,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-27 21:59:27,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-08-27 21:59:27,164 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 10 states. [2020-08-27 21:59:27,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:27,409 INFO L93 Difference]: Finished difference Result 74 states and 83 transitions. [2020-08-27 21:59:27,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-27 21:59:27,410 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2020-08-27 21:59:27,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:27,411 INFO L225 Difference]: With dead ends: 74 [2020-08-27 21:59:27,411 INFO L226 Difference]: Without dead ends: 72 [2020-08-27 21:59:27,412 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 [2020-08-27 21:59:27,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-08-27 21:59:27,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 58. [2020-08-27 21:59:27,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-08-27 21:59:27,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2020-08-27 21:59:27,425 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 51 [2020-08-27 21:59:27,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:27,426 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2020-08-27 21:59:27,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-27 21:59:27,426 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2020-08-27 21:59:27,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-27 21:59:27,428 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:27,428 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] [2020-08-27 21:59:27,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-27 21:59:27,429 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:27,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:27,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1770393310, now seen corresponding path program 4 times [2020-08-27 21:59:27,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:27,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898549357] [2020-08-27 21:59:27,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:27,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:27,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:27,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:27,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:27,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:27,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-08-27 21:59:27,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:27,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:27,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:27,557 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 41 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-08-27 21:59:27,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898549357] [2020-08-27 21:59:27,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:27,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-27 21:59:27,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481669039] [2020-08-27 21:59:27,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-27 21:59:27,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:27,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-27 21:59:27,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-27 21:59:27,570 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 9 states. [2020-08-27 21:59:27,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:27,817 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2020-08-27 21:59:27,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-27 21:59:27,817 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 58 [2020-08-27 21:59:27,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:27,818 INFO L225 Difference]: With dead ends: 97 [2020-08-27 21:59:27,819 INFO L226 Difference]: Without dead ends: 61 [2020-08-27 21:59:27,823 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 [2020-08-27 21:59:27,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-08-27 21:59:27,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-08-27 21:59:27,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-08-27 21:59:27,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 66 transitions. [2020-08-27 21:59:27,850 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 66 transitions. Word has length 58 [2020-08-27 21:59:27,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:27,851 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 66 transitions. [2020-08-27 21:59:27,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-27 21:59:27,851 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 66 transitions. [2020-08-27 21:59:27,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-27 21:59:27,852 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:27,853 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] [2020-08-27 21:59:27,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-27 21:59:27,853 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:27,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:27,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1336799475, now seen corresponding path program 5 times [2020-08-27 21:59:27,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:27,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1733134798] [2020-08-27 21:59:27,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:28,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:28,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:28,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:28,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:59:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:28,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:28,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:28,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 21:59:28,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:28,096 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 16 proven. 54 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-08-27 21:59:28,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1733134798] [2020-08-27 21:59:28,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:28,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-27 21:59:28,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967155777] [2020-08-27 21:59:28,101 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:59:28,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:28,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:59:28,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:59:28,103 INFO L87 Difference]: Start difference. First operand 60 states and 66 transitions. Second operand 12 states. [2020-08-27 21:59:28,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:28,463 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2020-08-27 21:59:28,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-27 21:59:28,463 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 65 [2020-08-27 21:59:28,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:28,466 INFO L225 Difference]: With dead ends: 90 [2020-08-27 21:59:28,466 INFO L226 Difference]: Without dead ends: 88 [2020-08-27 21:59:28,467 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 [2020-08-27 21:59:28,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-08-27 21:59:28,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 71. [2020-08-27 21:59:28,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-08-27 21:59:28,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2020-08-27 21:59:28,479 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 65 [2020-08-27 21:59:28,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:28,480 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2020-08-27 21:59:28,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:59:28,480 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2020-08-27 21:59:28,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-08-27 21:59:28,481 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:28,482 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] [2020-08-27 21:59:28,482 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-27 21:59:28,482 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:28,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:28,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1858831946, now seen corresponding path program 6 times [2020-08-27 21:59:28,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:28,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002191140] [2020-08-27 21:59:28,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:28,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:28,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:28,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:28,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:28,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:59:28,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:28,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:28,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:28,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 21:59:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:28,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:59:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:28,645 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 30 proven. 62 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-08-27 21:59:28,646 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002191140] [2020-08-27 21:59:28,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:28,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-27 21:59:28,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732662009] [2020-08-27 21:59:28,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:59:28,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:28,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:59:28,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:59:28,648 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand 12 states. [2020-08-27 21:59:29,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:29,084 INFO L93 Difference]: Finished difference Result 141 states and 162 transitions. [2020-08-27 21:59:29,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-27 21:59:29,084 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 72 [2020-08-27 21:59:29,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:29,086 INFO L225 Difference]: With dead ends: 141 [2020-08-27 21:59:29,086 INFO L226 Difference]: Without dead ends: 96 [2020-08-27 21:59:29,087 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 [2020-08-27 21:59:29,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-08-27 21:59:29,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-08-27 21:59:29,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-08-27 21:59:29,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 109 transitions. [2020-08-27 21:59:29,104 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 109 transitions. Word has length 72 [2020-08-27 21:59:29,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:29,104 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 109 transitions. [2020-08-27 21:59:29,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:59:29,105 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 109 transitions. [2020-08-27 21:59:29,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-08-27 21:59:29,107 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:29,107 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] [2020-08-27 21:59:29,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-27 21:59:29,107 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:29,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:29,108 INFO L82 PathProgramCache]: Analyzing trace with hash 179803111, now seen corresponding path program 7 times [2020-08-27 21:59:29,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:29,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758107028] [2020-08-27 21:59:29,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:29,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:29,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:29,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:29,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:29,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:29,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:59:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:29,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:29,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:29,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 21:59:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:29,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-08-27 21:59:29,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:29,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:59:29,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:29,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-08-27 21:59:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:29,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-27 21:59:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:29,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:59:29,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:29,381 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 162 proven. 49 refuted. 0 times theorem prover too weak. 237 trivial. 0 not checked. [2020-08-27 21:59:29,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758107028] [2020-08-27 21:59:29,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:29,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-27 21:59:29,383 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673474016] [2020-08-27 21:59:29,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-27 21:59:29,384 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:29,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-27 21:59:29,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-08-27 21:59:29,385 INFO L87 Difference]: Start difference. First operand 95 states and 109 transitions. Second operand 11 states. [2020-08-27 21:59:29,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:29,728 INFO L93 Difference]: Finished difference Result 155 states and 179 transitions. [2020-08-27 21:59:29,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-27 21:59:29,729 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 109 [2020-08-27 21:59:29,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:29,731 INFO L225 Difference]: With dead ends: 155 [2020-08-27 21:59:29,731 INFO L226 Difference]: Without dead ends: 98 [2020-08-27 21:59:29,733 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 [2020-08-27 21:59:29,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-08-27 21:59:29,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2020-08-27 21:59:29,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-08-27 21:59:29,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 107 transitions. [2020-08-27 21:59:29,756 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 107 transitions. Word has length 109 [2020-08-27 21:59:29,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:29,756 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 107 transitions. [2020-08-27 21:59:29,756 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-27 21:59:29,757 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 107 transitions. [2020-08-27 21:59:29,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-08-27 21:59:29,759 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:29,759 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] [2020-08-27 21:59:29,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-27 21:59:29,760 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:29,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:29,760 INFO L82 PathProgramCache]: Analyzing trace with hash -888781782, now seen corresponding path program 8 times [2020-08-27 21:59:29,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:29,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31623198] [2020-08-27 21:59:29,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:29,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:29,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:29,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:29,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:29,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:29,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:29,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:59:29,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:29,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:29,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:29,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 21:59:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:29,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:59:29,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:29,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:59:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:29,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:59:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:29,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-08-27 21:59:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:29,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:59:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:29,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:59:29,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:29,993 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 182 proven. 62 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2020-08-27 21:59:29,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31623198] [2020-08-27 21:59:29,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:29,994 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-27 21:59:29,994 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235135520] [2020-08-27 21:59:29,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-27 21:59:29,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:29,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-27 21:59:29,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-27 21:59:29,996 INFO L87 Difference]: Start difference. First operand 95 states and 107 transitions. Second operand 11 states. [2020-08-27 21:59:30,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:30,330 INFO L93 Difference]: Finished difference Result 178 states and 205 transitions. [2020-08-27 21:59:30,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-27 21:59:30,330 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 116 [2020-08-27 21:59:30,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:30,332 INFO L225 Difference]: With dead ends: 178 [2020-08-27 21:59:30,332 INFO L226 Difference]: Without dead ends: 99 [2020-08-27 21:59:30,333 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=307, Unknown=0, NotChecked=0, Total=462 [2020-08-27 21:59:30,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-08-27 21:59:30,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2020-08-27 21:59:30,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-08-27 21:59:30,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 110 transitions. [2020-08-27 21:59:30,350 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 110 transitions. Word has length 116 [2020-08-27 21:59:30,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:30,351 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 110 transitions. [2020-08-27 21:59:30,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-27 21:59:30,351 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 110 transitions. [2020-08-27 21:59:30,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-08-27 21:59:30,353 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:30,353 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] [2020-08-27 21:59:30,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-27 21:59:30,354 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:30,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:30,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1465957677, now seen corresponding path program 9 times [2020-08-27 21:59:30,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:30,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187986659] [2020-08-27 21:59:30,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:30,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:30,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:30,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:30,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:30,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:30,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:30,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:59:30,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:30,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:30,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:30,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 21:59:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:30,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:59:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:30,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:59:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:30,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:59:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:30,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:59:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:30,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:59:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:30,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:59:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:30,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 21:59:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:30,565 INFO L134 CoverageAnalysis]: Checked inductivity of 611 backedges. 70 proven. 217 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2020-08-27 21:59:30,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187986659] [2020-08-27 21:59:30,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:30,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-27 21:59:30,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96853786] [2020-08-27 21:59:30,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-27 21:59:30,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:30,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-27 21:59:30,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-08-27 21:59:30,568 INFO L87 Difference]: Start difference. First operand 98 states and 110 transitions. Second operand 14 states. [2020-08-27 21:59:31,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:31,009 INFO L93 Difference]: Finished difference Result 136 states and 149 transitions. [2020-08-27 21:59:31,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-27 21:59:31,010 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 123 [2020-08-27 21:59:31,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:31,012 INFO L225 Difference]: With dead ends: 136 [2020-08-27 21:59:31,012 INFO L226 Difference]: Without dead ends: 134 [2020-08-27 21:59:31,013 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 [2020-08-27 21:59:31,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-08-27 21:59:31,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 125. [2020-08-27 21:59:31,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-08-27 21:59:31,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 137 transitions. [2020-08-27 21:59:31,030 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 137 transitions. Word has length 123 [2020-08-27 21:59:31,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:31,031 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 137 transitions. [2020-08-27 21:59:31,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-27 21:59:31,031 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 137 transitions. [2020-08-27 21:59:31,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-08-27 21:59:31,033 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:31,033 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] [2020-08-27 21:59:31,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-27 21:59:31,034 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:31,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:31,034 INFO L82 PathProgramCache]: Analyzing trace with hash -1688384554, now seen corresponding path program 10 times [2020-08-27 21:59:31,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:31,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640685123] [2020-08-27 21:59:31,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:31,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:31,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:31,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:31,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:31,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:59:31,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:31,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:31,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 21:59:31,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:31,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:59:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:31,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:59:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:31,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:59:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:31,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:59:31,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:31,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:59:31,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:31,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:59:31,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:31,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 21:59:31,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:31,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 21:59:31,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:31,271 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 61 proven. 271 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2020-08-27 21:59:31,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640685123] [2020-08-27 21:59:31,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:31,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-27 21:59:31,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830949414] [2020-08-27 21:59:31,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-27 21:59:31,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:31,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-27 21:59:31,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-08-27 21:59:31,274 INFO L87 Difference]: Start difference. First operand 125 states and 137 transitions. Second operand 14 states. [2020-08-27 21:59:32,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:32,033 INFO L93 Difference]: Finished difference Result 234 states and 273 transitions. [2020-08-27 21:59:32,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-27 21:59:32,034 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 130 [2020-08-27 21:59:32,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:32,041 INFO L225 Difference]: With dead ends: 234 [2020-08-27 21:59:32,041 INFO L226 Difference]: Without dead ends: 171 [2020-08-27 21:59:32,043 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 [2020-08-27 21:59:32,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-08-27 21:59:32,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 153. [2020-08-27 21:59:32,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-27 21:59:32,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 174 transitions. [2020-08-27 21:59:32,087 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 174 transitions. Word has length 130 [2020-08-27 21:59:32,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:32,087 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 174 transitions. [2020-08-27 21:59:32,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-27 21:59:32,088 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 174 transitions. [2020-08-27 21:59:32,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-08-27 21:59:32,090 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:32,090 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] [2020-08-27 21:59:32,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-27 21:59:32,090 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:32,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:32,091 INFO L82 PathProgramCache]: Analyzing trace with hash -840848228, now seen corresponding path program 11 times [2020-08-27 21:59:32,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:32,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2134392735] [2020-08-27 21:59:32,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:32,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:32,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:32,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:32,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:32,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:32,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:59:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:32,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:32,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:32,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 21:59:32,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:32,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:59:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:32,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:59:32,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:32,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:59:32,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:32,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:59:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:32,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:59:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:32,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:59:32,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:32,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 21:59:32,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:32,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-08-27 21:59:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:32,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:59:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:32,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-27 21:59:32,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:32,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 21:59:32,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:32,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 284 proven. 205 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2020-08-27 21:59:32,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2134392735] [2020-08-27 21:59:32,348 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:32,348 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-27 21:59:32,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045712130] [2020-08-27 21:59:32,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-27 21:59:32,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:32,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-27 21:59:32,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-08-27 21:59:32,351 INFO L87 Difference]: Start difference. First operand 153 states and 174 transitions. Second operand 13 states. [2020-08-27 21:59:32,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:32,928 INFO L93 Difference]: Finished difference Result 218 states and 247 transitions. [2020-08-27 21:59:32,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-27 21:59:32,929 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 154 [2020-08-27 21:59:32,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:32,931 INFO L225 Difference]: With dead ends: 218 [2020-08-27 21:59:32,931 INFO L226 Difference]: Without dead ends: 155 [2020-08-27 21:59:32,932 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 [2020-08-27 21:59:32,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-08-27 21:59:32,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2020-08-27 21:59:32,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-27 21:59:32,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 172 transitions. [2020-08-27 21:59:32,967 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 172 transitions. Word has length 154 [2020-08-27 21:59:32,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:32,967 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 172 transitions. [2020-08-27 21:59:32,967 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-27 21:59:32,968 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 172 transitions. [2020-08-27 21:59:32,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-08-27 21:59:32,972 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:32,972 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] [2020-08-27 21:59:32,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-08-27 21:59:32,973 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:32,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:32,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1311982393, now seen corresponding path program 12 times [2020-08-27 21:59:32,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:32,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917496513] [2020-08-27 21:59:32,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:33,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:33,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:33,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:33,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:33,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:59:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:33,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:33,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:33,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 21:59:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:33,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:59:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:33,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:59:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:33,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:59:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:33,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:59:33,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:33,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:59:33,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:33,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:59:33,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:33,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 21:59:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:33,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 21:59:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:33,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:59:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:33,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-27 21:59:33,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:33,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 21:59:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:33,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-27 21:59:33,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:33,345 INFO L134 CoverageAnalysis]: Checked inductivity of 1175 backedges. 80 proven. 422 refuted. 0 times theorem prover too weak. 673 trivial. 0 not checked. [2020-08-27 21:59:33,346 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917496513] [2020-08-27 21:59:33,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:33,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-27 21:59:33,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591208563] [2020-08-27 21:59:33,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-27 21:59:33,351 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:33,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-27 21:59:33,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-08-27 21:59:33,352 INFO L87 Difference]: Start difference. First operand 153 states and 172 transitions. Second operand 15 states. [2020-08-27 21:59:33,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:33,910 INFO L93 Difference]: Finished difference Result 184 states and 207 transitions. [2020-08-27 21:59:33,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-08-27 21:59:33,912 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 161 [2020-08-27 21:59:33,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:33,917 INFO L225 Difference]: With dead ends: 184 [2020-08-27 21:59:33,917 INFO L226 Difference]: Without dead ends: 182 [2020-08-27 21:59:33,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=188, Invalid=568, Unknown=0, NotChecked=0, Total=756 [2020-08-27 21:59:33,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-08-27 21:59:33,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 167. [2020-08-27 21:59:33,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-08-27 21:59:33,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 188 transitions. [2020-08-27 21:59:33,941 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 188 transitions. Word has length 161 [2020-08-27 21:59:33,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:33,942 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 188 transitions. [2020-08-27 21:59:33,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-27 21:59:33,942 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 188 transitions. [2020-08-27 21:59:33,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-08-27 21:59:33,947 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:33,947 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] [2020-08-27 21:59:33,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-08-27 21:59:33,948 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:33,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:33,948 INFO L82 PathProgramCache]: Analyzing trace with hash -1425986384, now seen corresponding path program 13 times [2020-08-27 21:59:33,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:33,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707584223] [2020-08-27 21:59:33,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:34,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:34,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:34,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:34,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:34,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:34,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:59:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:34,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:34,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 21:59:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:34,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:59:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:34,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:59:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:34,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:59:34,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:34,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:59:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:34,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:59:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:34,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:59:34,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:34,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 21:59:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:34,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 21:59:34,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:34,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:59:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:34,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-27 21:59:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:34,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 21:59:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:34,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-27 21:59:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:34,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-27 21:59:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:34,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1303 backedges. 89 proven. 521 refuted. 0 times theorem prover too weak. 693 trivial. 0 not checked. [2020-08-27 21:59:34,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707584223] [2020-08-27 21:59:34,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:34,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-27 21:59:34,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47390101] [2020-08-27 21:59:34,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-27 21:59:34,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:34,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-27 21:59:34,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-08-27 21:59:34,294 INFO L87 Difference]: Start difference. First operand 167 states and 188 transitions. Second operand 16 states. [2020-08-27 21:59:35,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:35,323 INFO L93 Difference]: Finished difference Result 295 states and 344 transitions. [2020-08-27 21:59:35,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-08-27 21:59:35,324 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 168 [2020-08-27 21:59:35,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:35,326 INFO L225 Difference]: With dead ends: 295 [2020-08-27 21:59:35,326 INFO L226 Difference]: Without dead ends: 218 [2020-08-27 21:59:35,328 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 [2020-08-27 21:59:35,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-08-27 21:59:35,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 187. [2020-08-27 21:59:35,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-08-27 21:59:35,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 216 transitions. [2020-08-27 21:59:35,353 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 216 transitions. Word has length 168 [2020-08-27 21:59:35,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:35,354 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 216 transitions. [2020-08-27 21:59:35,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-27 21:59:35,354 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 216 transitions. [2020-08-27 21:59:35,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-08-27 21:59:35,357 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:35,357 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] [2020-08-27 21:59:35,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-08-27 21:59:35,358 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:35,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:35,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1410050128, now seen corresponding path program 14 times [2020-08-27 21:59:35,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:35,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [910035116] [2020-08-27 21:59:35,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:35,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:35,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:59:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 21:59:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:59:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:59:35,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:59:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:59:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:59:35,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:59:35,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 21:59:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 21:59:35,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:59:35,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-27 21:59:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 21:59:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-27 21:59:35,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-08-27 21:59:35,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-27 21:59:35,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-27 21:59:35,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-08-27 21:59:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-08-27 21:59:35,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-27 21:59:35,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-27 21:59:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-27 21:59:35,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:35,645 INFO L134 CoverageAnalysis]: Checked inductivity of 2506 backedges. 707 proven. 405 refuted. 0 times theorem prover too weak. 1394 trivial. 0 not checked. [2020-08-27 21:59:35,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [910035116] [2020-08-27 21:59:35,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:35,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-27 21:59:35,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580265296] [2020-08-27 21:59:35,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-27 21:59:35,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:35,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-27 21:59:35,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-08-27 21:59:35,648 INFO L87 Difference]: Start difference. First operand 187 states and 216 transitions. Second operand 15 states. [2020-08-27 21:59:36,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:36,462 INFO L93 Difference]: Finished difference Result 304 states and 358 transitions. [2020-08-27 21:59:36,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-27 21:59:36,463 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 226 [2020-08-27 21:59:36,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:36,465 INFO L225 Difference]: With dead ends: 304 [2020-08-27 21:59:36,465 INFO L226 Difference]: Without dead ends: 209 [2020-08-27 21:59:36,466 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 [2020-08-27 21:59:36,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-08-27 21:59:36,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 202. [2020-08-27 21:59:36,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-08-27 21:59:36,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 235 transitions. [2020-08-27 21:59:36,491 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 235 transitions. Word has length 226 [2020-08-27 21:59:36,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:36,492 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 235 transitions. [2020-08-27 21:59:36,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-27 21:59:36,492 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 235 transitions. [2020-08-27 21:59:36,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-08-27 21:59:36,495 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:36,495 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] [2020-08-27 21:59:36,496 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-08-27 21:59:36,496 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:36,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:36,496 INFO L82 PathProgramCache]: Analyzing trace with hash 400238009, now seen corresponding path program 15 times [2020-08-27 21:59:36,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:36,497 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399672378] [2020-08-27 21:59:36,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:36,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:36,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:59:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 21:59:36,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:59:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:59:36,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:59:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:59:36,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:59:36,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:59:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 21:59:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 21:59:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:59:36,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-27 21:59:36,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 21:59:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-27 21:59:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-27 21:59:36,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-27 21:59:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-27 21:59:36,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-27 21:59:36,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-08-27 21:59:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-27 21:59:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-27 21:59:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-27 21:59:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-27 21:59:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:36,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2692 backedges. 833 proven. 226 refuted. 0 times theorem prover too weak. 1633 trivial. 0 not checked. [2020-08-27 21:59:36,767 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399672378] [2020-08-27 21:59:36,767 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:36,767 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-27 21:59:36,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602384295] [2020-08-27 21:59:36,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-27 21:59:36,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:36,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-27 21:59:36,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-08-27 21:59:36,768 INFO L87 Difference]: Start difference. First operand 202 states and 235 transitions. Second operand 13 states. [2020-08-27 21:59:37,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:37,350 INFO L93 Difference]: Finished difference Result 356 states and 421 transitions. [2020-08-27 21:59:37,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-27 21:59:37,351 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 233 [2020-08-27 21:59:37,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:37,353 INFO L225 Difference]: With dead ends: 356 [2020-08-27 21:59:37,353 INFO L226 Difference]: Without dead ends: 203 [2020-08-27 21:59:37,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=247, Invalid=509, Unknown=0, NotChecked=0, Total=756 [2020-08-27 21:59:37,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-08-27 21:59:37,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 202. [2020-08-27 21:59:37,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-08-27 21:59:37,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 232 transitions. [2020-08-27 21:59:37,380 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 232 transitions. Word has length 233 [2020-08-27 21:59:37,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:37,381 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 232 transitions. [2020-08-27 21:59:37,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-27 21:59:37,381 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 232 transitions. [2020-08-27 21:59:37,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-08-27 21:59:37,385 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:37,385 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] [2020-08-27 21:59:37,385 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-08-27 21:59:37,386 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:37,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:37,386 INFO L82 PathProgramCache]: Analyzing trace with hash 1039853412, now seen corresponding path program 16 times [2020-08-27 21:59:37,386 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:37,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1146797222] [2020-08-27 21:59:37,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:37,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:59:37,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 21:59:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:59:37,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:59:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:59:37,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:59:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:59:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:59:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 21:59:37,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 21:59:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:59:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-27 21:59:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 21:59:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-27 21:59:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-27 21:59:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-27 21:59:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-27 21:59:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-27 21:59:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-27 21:59:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-27 21:59:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-27 21:59:37,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-27 21:59:37,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-27 21:59:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-27 21:59:37,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:37,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2885 backedges. 116 proven. 1050 refuted. 0 times theorem prover too weak. 1719 trivial. 0 not checked. [2020-08-27 21:59:37,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1146797222] [2020-08-27 21:59:37,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:37,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-27 21:59:37,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77562678] [2020-08-27 21:59:37,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-27 21:59:37,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:37,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-27 21:59:37,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-08-27 21:59:37,725 INFO L87 Difference]: Start difference. First operand 202 states and 232 transitions. Second operand 16 states. [2020-08-27 21:59:39,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:39,060 INFO L93 Difference]: Finished difference Result 398 states and 480 transitions. [2020-08-27 21:59:39,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-27 21:59:39,061 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 240 [2020-08-27 21:59:39,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:39,064 INFO L225 Difference]: With dead ends: 398 [2020-08-27 21:59:39,064 INFO L226 Difference]: Without dead ends: 306 [2020-08-27 21:59:39,066 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1088 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=903, Invalid=2403, Unknown=0, NotChecked=0, Total=3306 [2020-08-27 21:59:39,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-08-27 21:59:39,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 267. [2020-08-27 21:59:39,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-08-27 21:59:39,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 318 transitions. [2020-08-27 21:59:39,101 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 318 transitions. Word has length 240 [2020-08-27 21:59:39,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:39,102 INFO L479 AbstractCegarLoop]: Abstraction has 267 states and 318 transitions. [2020-08-27 21:59:39,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-27 21:59:39,102 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 318 transitions. [2020-08-27 21:59:39,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-08-27 21:59:39,104 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:39,104 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] [2020-08-27 21:59:39,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-08-27 21:59:39,105 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:39,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:39,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1581346975, now seen corresponding path program 17 times [2020-08-27 21:59:39,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:39,106 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452349908] [2020-08-27 21:59:39,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:39,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:39,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:59:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 21:59:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:59:39,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:59:39,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:59:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:59:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:59:39,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:59:39,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 21:59:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 21:59:39,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:59:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-27 21:59:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 21:59:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-27 21:59:39,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-27 21:59:39,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-27 21:59:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-27 21:59:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-27 21:59:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-27 21:59:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-27 21:59:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-27 21:59:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-27 21:59:39,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-27 21:59:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-08-27 21:59:39,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-27 21:59:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-27 21:59:39,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-27 21:59:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-27 21:59:39,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:39,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3785 backedges. 937 proven. 633 refuted. 0 times theorem prover too weak. 2215 trivial. 0 not checked. [2020-08-27 21:59:39,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452349908] [2020-08-27 21:59:39,489 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:39,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-27 21:59:39,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518705809] [2020-08-27 21:59:39,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-27 21:59:39,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:39,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-27 21:59:39,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-08-27 21:59:39,492 INFO L87 Difference]: Start difference. First operand 267 states and 318 transitions. Second operand 15 states. [2020-08-27 21:59:40,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:40,434 INFO L93 Difference]: Finished difference Result 461 states and 558 transitions. [2020-08-27 21:59:40,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-27 21:59:40,434 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 271 [2020-08-27 21:59:40,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:40,437 INFO L225 Difference]: With dead ends: 461 [2020-08-27 21:59:40,437 INFO L226 Difference]: Without dead ends: 286 [2020-08-27 21:59:40,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=396, Invalid=794, Unknown=0, NotChecked=0, Total=1190 [2020-08-27 21:59:40,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-08-27 21:59:40,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 239. [2020-08-27 21:59:40,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-08-27 21:59:40,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 278 transitions. [2020-08-27 21:59:40,487 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 278 transitions. Word has length 271 [2020-08-27 21:59:40,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:40,488 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 278 transitions. [2020-08-27 21:59:40,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-27 21:59:40,488 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 278 transitions. [2020-08-27 21:59:40,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-08-27 21:59:40,490 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:40,490 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] [2020-08-27 21:59:40,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-08-27 21:59:40,491 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:40,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:40,491 INFO L82 PathProgramCache]: Analyzing trace with hash -2078560834, now seen corresponding path program 18 times [2020-08-27 21:59:40,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:40,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871772403] [2020-08-27 21:59:40,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:40,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:59:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 21:59:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:59:40,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:59:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:59:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:59:40,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:59:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:59:40,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 21:59:40,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 21:59:40,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:59:40,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-27 21:59:40,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 21:59:40,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-27 21:59:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-27 21:59:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-27 21:59:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-27 21:59:40,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-27 21:59:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-27 21:59:40,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-27 21:59:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-27 21:59:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-27 21:59:40,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-27 21:59:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-27 21:59:40,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-27 21:59:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-27 21:59:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-27 21:59:40,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-27 21:59:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-27 21:59:40,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:40,932 INFO L134 CoverageAnalysis]: Checked inductivity of 4014 backedges. 429 proven. 1177 refuted. 0 times theorem prover too weak. 2408 trivial. 0 not checked. [2020-08-27 21:59:40,933 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871772403] [2020-08-27 21:59:40,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:40,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-27 21:59:40,933 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688809008] [2020-08-27 21:59:40,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-27 21:59:40,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:40,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-27 21:59:40,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2020-08-27 21:59:40,935 INFO L87 Difference]: Start difference. First operand 239 states and 278 transitions. Second operand 17 states. [2020-08-27 21:59:41,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:41,687 INFO L93 Difference]: Finished difference Result 312 states and 355 transitions. [2020-08-27 21:59:41,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-27 21:59:41,690 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 278 [2020-08-27 21:59:41,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:41,692 INFO L225 Difference]: With dead ends: 312 [2020-08-27 21:59:41,692 INFO L226 Difference]: Without dead ends: 310 [2020-08-27 21:59:41,693 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 [2020-08-27 21:59:41,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2020-08-27 21:59:41,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 295. [2020-08-27 21:59:41,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-08-27 21:59:41,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 336 transitions. [2020-08-27 21:59:41,728 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 336 transitions. Word has length 278 [2020-08-27 21:59:41,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:41,729 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 336 transitions. [2020-08-27 21:59:41,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-27 21:59:41,729 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 336 transitions. [2020-08-27 21:59:41,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2020-08-27 21:59:41,731 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:41,731 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] [2020-08-27 21:59:41,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-08-27 21:59:41,732 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:41,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:41,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1263938933, now seen corresponding path program 19 times [2020-08-27 21:59:41,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:41,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680252906] [2020-08-27 21:59:41,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:42,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:59:42,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 21:59:42,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:59:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:59:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:59:42,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:59:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:59:42,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:59:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 21:59:42,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 21:59:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:59:42,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-27 21:59:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 21:59:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-27 21:59:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-27 21:59:42,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-27 21:59:42,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-27 21:59:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-27 21:59:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-27 21:59:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-27 21:59:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-27 21:59:42,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-27 21:59:42,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-27 21:59:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-27 21:59:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-27 21:59:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-27 21:59:42,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-27 21:59:42,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-27 21:59:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-27 21:59:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-27 21:59:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:42,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4250 backedges. 150 proven. 1638 refuted. 0 times theorem prover too weak. 2462 trivial. 0 not checked. [2020-08-27 21:59:42,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680252906] [2020-08-27 21:59:42,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:42,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-27 21:59:42,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833333409] [2020-08-27 21:59:42,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-27 21:59:42,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:42,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-27 21:59:42,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-08-27 21:59:42,180 INFO L87 Difference]: Start difference. First operand 295 states and 336 transitions. Second operand 18 states. [2020-08-27 21:59:43,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:43,798 INFO L93 Difference]: Finished difference Result 501 states and 595 transitions. [2020-08-27 21:59:43,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-08-27 21:59:43,799 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 285 [2020-08-27 21:59:43,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:43,802 INFO L225 Difference]: With dead ends: 501 [2020-08-27 21:59:43,802 INFO L226 Difference]: Without dead ends: 410 [2020-08-27 21:59:43,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1519 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1240, Invalid=3182, Unknown=0, NotChecked=0, Total=4422 [2020-08-27 21:59:43,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-08-27 21:59:43,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 316. [2020-08-27 21:59:43,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-08-27 21:59:43,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 365 transitions. [2020-08-27 21:59:43,852 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 365 transitions. Word has length 285 [2020-08-27 21:59:43,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:43,853 INFO L479 AbstractCegarLoop]: Abstraction has 316 states and 365 transitions. [2020-08-27 21:59:43,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-27 21:59:43,854 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 365 transitions. [2020-08-27 21:59:43,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-08-27 21:59:43,857 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:43,857 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] [2020-08-27 21:59:43,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-08-27 21:59:43,858 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:43,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:43,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1910860175, now seen corresponding path program 20 times [2020-08-27 21:59:43,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:43,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421092207] [2020-08-27 21:59:43,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:44,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:44,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:59:44,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 21:59:44,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:59:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:59:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:59:44,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:59:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:59:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:59:44,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 21:59:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 21:59:44,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:59:44,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-27 21:59:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 21:59:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-27 21:59:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-27 21:59:44,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-27 21:59:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-27 21:59:44,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-27 21:59:44,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-27 21:59:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-27 21:59:44,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-27 21:59:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-27 21:59:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-27 21:59:44,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-27 21:59:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-27 21:59:44,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-27 21:59:44,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-27 21:59:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-27 21:59:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-27 21:59:44,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-08-27 21:59:44,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-27 21:59:44,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-27 21:59:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-27 21:59:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-27 21:59:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-27 21:59:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:44,376 INFO L134 CoverageAnalysis]: Checked inductivity of 5603 backedges. 1239 proven. 1145 refuted. 0 times theorem prover too weak. 3219 trivial. 0 not checked. [2020-08-27 21:59:44,377 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421092207] [2020-08-27 21:59:44,377 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:44,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-27 21:59:44,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690998697] [2020-08-27 21:59:44,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-27 21:59:44,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:44,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-27 21:59:44,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-08-27 21:59:44,380 INFO L87 Difference]: Start difference. First operand 316 states and 365 transitions. Second operand 17 states. [2020-08-27 21:59:45,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:45,382 INFO L93 Difference]: Finished difference Result 538 states and 640 transitions. [2020-08-27 21:59:45,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-08-27 21:59:45,383 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 323 [2020-08-27 21:59:45,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:45,385 INFO L225 Difference]: With dead ends: 538 [2020-08-27 21:59:45,385 INFO L226 Difference]: Without dead ends: 340 [2020-08-27 21:59:45,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=633, Invalid=1259, Unknown=0, NotChecked=0, Total=1892 [2020-08-27 21:59:45,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-08-27 21:59:45,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 334. [2020-08-27 21:59:45,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-08-27 21:59:45,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 387 transitions. [2020-08-27 21:59:45,436 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 387 transitions. Word has length 323 [2020-08-27 21:59:45,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:45,437 INFO L479 AbstractCegarLoop]: Abstraction has 334 states and 387 transitions. [2020-08-27 21:59:45,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-27 21:59:45,438 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 387 transitions. [2020-08-27 21:59:45,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-08-27 21:59:45,443 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:45,443 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] [2020-08-27 21:59:45,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-08-27 21:59:45,445 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:45,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:45,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1089690308, now seen corresponding path program 21 times [2020-08-27 21:59:45,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:45,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774509240] [2020-08-27 21:59:45,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:45,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:59:45,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:45,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 21:59:45,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:59:45,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:59:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:59:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:59:45,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:59:45,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:59:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 21:59:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 21:59:45,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:59:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-27 21:59:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 21:59:45,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-27 21:59:45,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-27 21:59:45,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-27 21:59:45,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-27 21:59:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-27 21:59:45,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-27 21:59:45,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-27 21:59:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-27 21:59:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-27 21:59:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-27 21:59:45,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-27 21:59:45,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-27 21:59:45,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-27 21:59:45,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-27 21:59:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-27 21:59:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-27 21:59:45,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-27 21:59:45,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-27 21:59:45,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-27 21:59:45,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-27 21:59:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-27 21:59:45,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-27 21:59:45,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:45,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-27 21:59:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:46,037 INFO L134 CoverageAnalysis]: Checked inductivity of 5882 backedges. 443 proven. 2023 refuted. 0 times theorem prover too weak. 3416 trivial. 0 not checked. [2020-08-27 21:59:46,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774509240] [2020-08-27 21:59:46,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:46,038 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-27 21:59:46,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672482472] [2020-08-27 21:59:46,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-27 21:59:46,039 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:46,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-27 21:59:46,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-08-27 21:59:46,040 INFO L87 Difference]: Start difference. First operand 334 states and 387 transitions. Second operand 15 states. [2020-08-27 21:59:47,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:47,019 INFO L93 Difference]: Finished difference Result 490 states and 557 transitions. [2020-08-27 21:59:47,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-08-27 21:59:47,020 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 330 [2020-08-27 21:59:47,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:47,024 INFO L225 Difference]: With dead ends: 490 [2020-08-27 21:59:47,024 INFO L226 Difference]: Without dead ends: 488 [2020-08-27 21:59:47,025 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 [2020-08-27 21:59:47,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2020-08-27 21:59:47,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 443. [2020-08-27 21:59:47,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-08-27 21:59:47,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 510 transitions. [2020-08-27 21:59:47,105 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 510 transitions. Word has length 330 [2020-08-27 21:59:47,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:47,106 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 510 transitions. [2020-08-27 21:59:47,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-27 21:59:47,106 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 510 transitions. [2020-08-27 21:59:47,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2020-08-27 21:59:47,112 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:47,112 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] [2020-08-27 21:59:47,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-08-27 21:59:47,113 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:47,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:47,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1713724203, now seen corresponding path program 22 times [2020-08-27 21:59:47,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:47,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990934429] [2020-08-27 21:59:47,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:47,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:59:47,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 21:59:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:59:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:59:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:59:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:59:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:59:47,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:59:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 21:59:47,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 21:59:47,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:59:47,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-27 21:59:47,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 21:59:47,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-27 21:59:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-27 21:59:47,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-27 21:59:47,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-27 21:59:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-27 21:59:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-27 21:59:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-27 21:59:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-27 21:59:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-27 21:59:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-27 21:59:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-27 21:59:47,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-27 21:59:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-27 21:59:47,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-27 21:59:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-27 21:59:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-27 21:59:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-27 21:59:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-27 21:59:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-27 21:59:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-27 21:59:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-27 21:59:47,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-27 21:59:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-27 21:59:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-08-27 21:59:47,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-08-27 21:59:47,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-08-27 21:59:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-08-27 21:59:47,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-08-27 21:59:47,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-08-27 21:59:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:47,781 INFO L134 CoverageAnalysis]: Checked inductivity of 7781 backedges. 455 proven. 2337 refuted. 0 times theorem prover too weak. 4989 trivial. 0 not checked. [2020-08-27 21:59:47,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990934429] [2020-08-27 21:59:47,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:47,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-08-27 21:59:47,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19312991] [2020-08-27 21:59:47,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-08-27 21:59:47,783 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:47,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-08-27 21:59:47,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2020-08-27 21:59:47,784 INFO L87 Difference]: Start difference. First operand 443 states and 510 transitions. Second operand 18 states. [2020-08-27 21:59:48,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:48,540 INFO L93 Difference]: Finished difference Result 503 states and 584 transitions. [2020-08-27 21:59:48,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-27 21:59:48,540 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 375 [2020-08-27 21:59:48,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:48,543 INFO L225 Difference]: With dead ends: 503 [2020-08-27 21:59:48,544 INFO L226 Difference]: Without dead ends: 501 [2020-08-27 21:59:48,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=287, Invalid=835, Unknown=0, NotChecked=0, Total=1122 [2020-08-27 21:59:48,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2020-08-27 21:59:48,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 457. [2020-08-27 21:59:48,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 457 states. [2020-08-27 21:59:48,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 526 transitions. [2020-08-27 21:59:48,599 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 526 transitions. Word has length 375 [2020-08-27 21:59:48,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:48,600 INFO L479 AbstractCegarLoop]: Abstraction has 457 states and 526 transitions. [2020-08-27 21:59:48,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-08-27 21:59:48,600 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 526 transitions. [2020-08-27 21:59:48,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-08-27 21:59:48,604 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:48,604 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] [2020-08-27 21:59:48,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-08-27 21:59:48,604 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:48,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:48,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1934385026, now seen corresponding path program 23 times [2020-08-27 21:59:48,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:48,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [32732667] [2020-08-27 21:59:48,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:59:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 21:59:48,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:59:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:59:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:59:48,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:59:48,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:59:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:59:48,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 21:59:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 21:59:48,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:59:48,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-27 21:59:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 21:59:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-27 21:59:48,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-27 21:59:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-27 21:59:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-27 21:59:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-27 21:59:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-27 21:59:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-27 21:59:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-27 21:59:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-27 21:59:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-27 21:59:48,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-27 21:59:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-27 21:59:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-27 21:59:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-27 21:59:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-27 21:59:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-27 21:59:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-27 21:59:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-27 21:59:48,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-27 21:59:48,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-27 21:59:48,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-27 21:59:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-27 21:59:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-27 21:59:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-08-27 21:59:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 336 [2020-08-27 21:59:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2020-08-27 21:59:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-08-27 21:59:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-08-27 21:59:48,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 364 [2020-08-27 21:59:48,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:48,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-08-27 21:59:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:49,082 INFO L134 CoverageAnalysis]: Checked inductivity of 8110 backedges. 1646 proven. 1795 refuted. 0 times theorem prover too weak. 4669 trivial. 0 not checked. [2020-08-27 21:59:49,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [32732667] [2020-08-27 21:59:49,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:49,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-27 21:59:49,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935036006] [2020-08-27 21:59:49,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-27 21:59:49,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:49,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-27 21:59:49,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-08-27 21:59:49,084 INFO L87 Difference]: Start difference. First operand 457 states and 526 transitions. Second operand 13 states. [2020-08-27 21:59:49,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:49,691 INFO L93 Difference]: Finished difference Result 947 states and 1112 transitions. [2020-08-27 21:59:49,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-27 21:59:49,692 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 382 [2020-08-27 21:59:49,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:49,695 INFO L225 Difference]: With dead ends: 947 [2020-08-27 21:59:49,696 INFO L226 Difference]: Without dead ends: 506 [2020-08-27 21:59:49,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=345, Invalid=711, Unknown=0, NotChecked=0, Total=1056 [2020-08-27 21:59:49,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-08-27 21:59:49,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 503. [2020-08-27 21:59:49,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 503 states. [2020-08-27 21:59:49,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 595 transitions. [2020-08-27 21:59:49,754 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 595 transitions. Word has length 382 [2020-08-27 21:59:49,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:49,754 INFO L479 AbstractCegarLoop]: Abstraction has 503 states and 595 transitions. [2020-08-27 21:59:49,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-27 21:59:49,754 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 595 transitions. [2020-08-27 21:59:49,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-08-27 21:59:49,758 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:49,759 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] [2020-08-27 21:59:49,759 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-08-27 21:59:49,759 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:49,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:49,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1577141198, now seen corresponding path program 24 times [2020-08-27 21:59:49,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:49,760 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988536211] [2020-08-27 21:59:49,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:49,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:49,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:49,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:49,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:49,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:59:49,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:49,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:49,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:49,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 21:59:49,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:49,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:59:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:49,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:59:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:49,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:59:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:49,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:59:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:49,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:59:49,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:49,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:59:50,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 21:59:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 21:59:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:59:50,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-27 21:59:50,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 21:59:50,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-27 21:59:50,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-27 21:59:50,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-27 21:59:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-27 21:59:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-27 21:59:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-27 21:59:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-27 21:59:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-27 21:59:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-27 21:59:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-27 21:59:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-27 21:59:50,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-08-27 21:59:50,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-08-27 21:59:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2020-08-27 21:59:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2020-08-27 21:59:50,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2020-08-27 21:59:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-08-27 21:59:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-27 21:59:50,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-27 21:59:50,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-08-27 21:59:50,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-08-27 21:59:50,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-08-27 21:59:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-08-27 21:59:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-08-27 21:59:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-27 21:59:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-27 21:59:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-08-27 21:59:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-08-27 21:59:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-08-27 21:59:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-27 21:59:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-27 21:59:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-27 21:59:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-27 21:59:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-08-27 21:59:50,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-27 21:59:50,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-27 21:59:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-27 21:59:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-27 21:59:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-27 21:59:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,190 INFO L134 CoverageAnalysis]: Checked inductivity of 11597 backedges. 3275 proven. 704 refuted. 0 times theorem prover too weak. 7618 trivial. 0 not checked. [2020-08-27 21:59:50,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988536211] [2020-08-27 21:59:50,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:50,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-27 21:59:50,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425886000] [2020-08-27 21:59:50,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-27 21:59:50,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:50,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-27 21:59:50,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-08-27 21:59:50,193 INFO L87 Difference]: Start difference. First operand 503 states and 595 transitions. Second operand 11 states. [2020-08-27 21:59:50,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:50,654 INFO L93 Difference]: Finished difference Result 702 states and 825 transitions. [2020-08-27 21:59:50,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-27 21:59:50,655 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 454 [2020-08-27 21:59:50,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:50,658 INFO L225 Difference]: With dead ends: 702 [2020-08-27 21:59:50,658 INFO L226 Difference]: Without dead ends: 412 [2020-08-27 21:59:50,660 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 [2020-08-27 21:59:50,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-27 21:59:50,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2020-08-27 21:59:50,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-08-27 21:59:50,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 473 transitions. [2020-08-27 21:59:50,714 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 473 transitions. Word has length 454 [2020-08-27 21:59:50,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:50,715 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 473 transitions. [2020-08-27 21:59:50,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-27 21:59:50,715 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 473 transitions. [2020-08-27 21:59:50,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 500 [2020-08-27 21:59:50,720 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:50,720 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] [2020-08-27 21:59:50,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-08-27 21:59:50,720 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:50,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:50,721 INFO L82 PathProgramCache]: Analyzing trace with hash 389126169, now seen corresponding path program 25 times [2020-08-27 21:59:50,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:50,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512518884] [2020-08-27 21:59:50,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:50,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:50,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:50,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:50,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:59:50,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 21:59:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:59:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:59:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:59:50,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:59:50,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:59:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:59:50,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 21:59:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 21:59:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:59:50,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:50,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-27 21:59:50,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 21:59:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-27 21:59:51,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-27 21:59:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-27 21:59:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-27 21:59:51,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-27 21:59:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-27 21:59:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-27 21:59:51,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-27 21:59:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-27 21:59:51,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-27 21:59:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-27 21:59:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-27 21:59:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-27 21:59:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-27 21:59:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-27 21:59:51,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-27 21:59:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-27 21:59:51,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-08-27 21:59:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-08-27 21:59:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-08-27 21:59:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 308 [2020-08-27 21:59:51,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-08-27 21:59:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-08-27 21:59:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-08-27 21:59:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-27 21:59:51,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-27 21:59:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-08-27 21:59:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-08-27 21:59:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-08-27 21:59:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-27 21:59:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-27 21:59:51,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-27 21:59:51,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-27 21:59:51,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-08-27 21:59:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-27 21:59:51,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-27 21:59:51,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-27 21:59:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-27 21:59:51,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-08-27 21:59:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-08-27 21:59:51,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-08-27 21:59:51,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-27 21:59:51,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-27 21:59:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-27 21:59:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-27 21:59:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:51,298 INFO L134 CoverageAnalysis]: Checked inductivity of 14212 backedges. 3869 proven. 1294 refuted. 0 times theorem prover too weak. 9049 trivial. 0 not checked. [2020-08-27 21:59:51,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512518884] [2020-08-27 21:59:51,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:51,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-27 21:59:51,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826328803] [2020-08-27 21:59:51,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-27 21:59:51,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:51,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-27 21:59:51,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-08-27 21:59:51,302 INFO L87 Difference]: Start difference. First operand 412 states and 473 transitions. Second operand 12 states. [2020-08-27 21:59:51,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:51,820 INFO L93 Difference]: Finished difference Result 611 states and 701 transitions. [2020-08-27 21:59:51,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-08-27 21:59:51,821 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 499 [2020-08-27 21:59:51,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:51,824 INFO L225 Difference]: With dead ends: 611 [2020-08-27 21:59:51,824 INFO L226 Difference]: Without dead ends: 412 [2020-08-27 21:59:51,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=247, Invalid=455, Unknown=0, NotChecked=0, Total=702 [2020-08-27 21:59:51,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-08-27 21:59:51,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 412. [2020-08-27 21:59:51,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-08-27 21:59:51,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 471 transitions. [2020-08-27 21:59:51,877 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 471 transitions. Word has length 499 [2020-08-27 21:59:51,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:51,877 INFO L479 AbstractCegarLoop]: Abstraction has 412 states and 471 transitions. [2020-08-27 21:59:51,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-27 21:59:51,878 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 471 transitions. [2020-08-27 21:59:51,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2020-08-27 21:59:51,882 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:51,883 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] [2020-08-27 21:59:51,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-08-27 21:59:51,883 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:51,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:51,883 INFO L82 PathProgramCache]: Analyzing trace with hash 206006162, now seen corresponding path program 26 times [2020-08-27 21:59:51,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:51,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566831524] [2020-08-27 21:59:51,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:59:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 21:59:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:59:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:59:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:59:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:59:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:59:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:59:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 21:59:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 21:59:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:59:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-27 21:59:52,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 21:59:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-27 21:59:52,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-27 21:59:52,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-27 21:59:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-27 21:59:52,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-27 21:59:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-27 21:59:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-27 21:59:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-27 21:59:52,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-27 21:59:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-27 21:59:52,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-27 21:59:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-27 21:59:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-27 21:59:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-27 21:59:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-27 21:59:52,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-27 21:59:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-27 21:59:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-27 21:59:52,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-27 21:59:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-27 21:59:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-27 21:59:52,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-27 21:59:52,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-27 21:59:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2020-08-27 21:59:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-27 21:59:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-27 21:59:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-27 21:59:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 363 [2020-08-27 21:59:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-08-27 21:59:52,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-27 21:59:52,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-27 21:59:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-27 21:59:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 401 [2020-08-27 21:59:52,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-08-27 21:59:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-27 21:59:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-27 21:59:52,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-27 21:59:52,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-27 21:59:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 446 [2020-08-27 21:59:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-08-27 21:59:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-08-27 21:59:52,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-27 21:59:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-27 21:59:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-27 21:59:52,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-08-27 21:59:52,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2020-08-27 21:59:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2020-08-27 21:59:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-08-27 21:59:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-08-27 21:59:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-27 21:59:52,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-27 21:59:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:52,682 INFO L134 CoverageAnalysis]: Checked inductivity of 17094 backedges. 4741 proven. 1771 refuted. 0 times theorem prover too weak. 10582 trivial. 0 not checked. [2020-08-27 21:59:52,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566831524] [2020-08-27 21:59:52,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:52,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-27 21:59:52,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290493252] [2020-08-27 21:59:52,683 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-27 21:59:52,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:52,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-27 21:59:52,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2020-08-27 21:59:52,684 INFO L87 Difference]: Start difference. First operand 412 states and 471 transitions. Second operand 19 states. [2020-08-27 21:59:54,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:54,224 INFO L93 Difference]: Finished difference Result 617 states and 706 transitions. [2020-08-27 21:59:54,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-27 21:59:54,225 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 544 [2020-08-27 21:59:54,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:54,228 INFO L225 Difference]: With dead ends: 617 [2020-08-27 21:59:54,228 INFO L226 Difference]: Without dead ends: 416 [2020-08-27 21:59:54,230 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=965, Invalid=1897, Unknown=0, NotChecked=0, Total=2862 [2020-08-27 21:59:54,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2020-08-27 21:59:54,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 416. [2020-08-27 21:59:54,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-27 21:59:54,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 474 transitions. [2020-08-27 21:59:54,281 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 474 transitions. Word has length 544 [2020-08-27 21:59:54,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:54,281 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 474 transitions. [2020-08-27 21:59:54,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-27 21:59:54,281 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 474 transitions. [2020-08-27 21:59:54,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2020-08-27 21:59:54,286 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:54,286 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] [2020-08-27 21:59:54,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-08-27 21:59:54,287 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:54,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:54,287 INFO L82 PathProgramCache]: Analyzing trace with hash 22704138, now seen corresponding path program 27 times [2020-08-27 21:59:54,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:54,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393062476] [2020-08-27 21:59:54,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:54,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:59:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 21:59:54,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:59:54,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:59:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:59:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:59:54,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:59:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:59:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 21:59:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 21:59:54,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:59:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-27 21:59:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 21:59:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-27 21:59:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-27 21:59:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-27 21:59:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-27 21:59:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-27 21:59:54,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-27 21:59:54,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-27 21:59:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-27 21:59:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-27 21:59:54,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-27 21:59:54,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-27 21:59:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-27 21:59:54,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-27 21:59:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-27 21:59:54,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-27 21:59:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-27 21:59:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-27 21:59:54,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-27 21:59:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-27 21:59:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-27 21:59:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-27 21:59:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-27 21:59:54,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-27 21:59:54,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-27 21:59:54,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-27 21:59:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-27 21:59:54,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-27 21:59:54,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-27 21:59:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 370 [2020-08-27 21:59:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-27 21:59:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-27 21:59:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-27 21:59:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-27 21:59:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-08-27 21:59:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-27 21:59:54,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-27 21:59:54,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-27 21:59:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-27 21:59:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-27 21:59:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 453 [2020-08-27 21:59:54,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-08-27 21:59:54,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-27 21:59:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-27 21:59:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-27 21:59:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-27 21:59:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-27 21:59:54,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 505 [2020-08-27 21:59:54,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-08-27 21:59:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-08-27 21:59:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-27 21:59:54,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-27 21:59:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-27 21:59:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-27 21:59:54,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:54,877 INFO L134 CoverageAnalysis]: Checked inductivity of 18075 backedges. 5945 proven. 607 refuted. 0 times theorem prover too weak. 11523 trivial. 0 not checked. [2020-08-27 21:59:54,877 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393062476] [2020-08-27 21:59:54,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:54,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-27 21:59:54,878 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796004687] [2020-08-27 21:59:54,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-27 21:59:54,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:54,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-27 21:59:54,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-08-27 21:59:54,879 INFO L87 Difference]: Start difference. First operand 416 states and 474 transitions. Second operand 15 states. [2020-08-27 21:59:55,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:55,683 INFO L93 Difference]: Finished difference Result 618 states and 703 transitions. [2020-08-27 21:59:55,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-27 21:59:55,684 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 558 [2020-08-27 21:59:55,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:55,687 INFO L225 Difference]: With dead ends: 618 [2020-08-27 21:59:55,687 INFO L226 Difference]: Without dead ends: 417 [2020-08-27 21:59:55,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=341, Invalid=715, Unknown=0, NotChecked=0, Total=1056 [2020-08-27 21:59:55,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-27 21:59:55,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 416. [2020-08-27 21:59:55,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-27 21:59:55,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 473 transitions. [2020-08-27 21:59:55,741 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 473 transitions. Word has length 558 [2020-08-27 21:59:55,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:55,742 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 473 transitions. [2020-08-27 21:59:55,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-27 21:59:55,742 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 473 transitions. [2020-08-27 21:59:55,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 566 [2020-08-27 21:59:55,748 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:55,748 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] [2020-08-27 21:59:55,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-08-27 21:59:55,748 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:55,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:55,749 INFO L82 PathProgramCache]: Analyzing trace with hash -289471297, now seen corresponding path program 28 times [2020-08-27 21:59:55,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:55,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354151146] [2020-08-27 21:59:55,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:59:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 21:59:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:59:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:59:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:59:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:59:56,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:59:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:59:56,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 21:59:56,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 21:59:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:59:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-27 21:59:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 21:59:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-27 21:59:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-27 21:59:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-27 21:59:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-27 21:59:56,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-27 21:59:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-27 21:59:56,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-27 21:59:56,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-27 21:59:56,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-27 21:59:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-27 21:59:56,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-27 21:59:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-27 21:59:56,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-27 21:59:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-27 21:59:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-27 21:59:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-27 21:59:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-27 21:59:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-27 21:59:56,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-27 21:59:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-27 21:59:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-27 21:59:56,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-27 21:59:56,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-27 21:59:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-27 21:59:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-27 21:59:56,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-27 21:59:56,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-27 21:59:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-27 21:59:56,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-27 21:59:56,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-27 21:59:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-27 21:59:56,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-27 21:59:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-27 21:59:56,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-27 21:59:56,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 415 [2020-08-27 21:59:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-27 21:59:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-27 21:59:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-27 21:59:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-27 21:59:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-27 21:59:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 460 [2020-08-27 21:59:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-27 21:59:56,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-27 21:59:56,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-27 21:59:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-27 21:59:56,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-27 21:59:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-27 21:59:56,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 512 [2020-08-27 21:59:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-08-27 21:59:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-27 21:59:56,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-27 21:59:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-27 21:59:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-27 21:59:56,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-27 21:59:56,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:56,609 INFO L134 CoverageAnalysis]: Checked inductivity of 18576 backedges. 5565 proven. 1561 refuted. 0 times theorem prover too weak. 11450 trivial. 0 not checked. [2020-08-27 21:59:56,610 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354151146] [2020-08-27 21:59:56,610 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:56,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-08-27 21:59:56,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246516606] [2020-08-27 21:59:56,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-08-27 21:59:56,612 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:56,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-08-27 21:59:56,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2020-08-27 21:59:56,613 INFO L87 Difference]: Start difference. First operand 416 states and 473 transitions. Second operand 17 states. [2020-08-27 21:59:57,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:57,594 INFO L93 Difference]: Finished difference Result 618 states and 701 transitions. [2020-08-27 21:59:57,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-27 21:59:57,595 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 565 [2020-08-27 21:59:57,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:57,598 INFO L225 Difference]: With dead ends: 618 [2020-08-27 21:59:57,598 INFO L226 Difference]: Without dead ends: 417 [2020-08-27 21:59:57,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=568, Invalid=1154, Unknown=0, NotChecked=0, Total=1722 [2020-08-27 21:59:57,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2020-08-27 21:59:57,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 416. [2020-08-27 21:59:57,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 416 states. [2020-08-27 21:59:57,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 472 transitions. [2020-08-27 21:59:57,654 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 472 transitions. Word has length 565 [2020-08-27 21:59:57,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:57,655 INFO L479 AbstractCegarLoop]: Abstraction has 416 states and 472 transitions. [2020-08-27 21:59:57,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-08-27 21:59:57,655 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 472 transitions. [2020-08-27 21:59:57,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 573 [2020-08-27 21:59:57,659 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:57,660 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] [2020-08-27 21:59:57,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-08-27 21:59:57,660 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:57,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:57,661 INFO L82 PathProgramCache]: Analyzing trace with hash 126799646, now seen corresponding path program 29 times [2020-08-27 21:59:57,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:57,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941889758] [2020-08-27 21:59:57,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:59:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:59:58,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 21:59:58,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 21:59:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 21:59:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 21:59:58,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 21:59:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 21:59:58,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 21:59:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 21:59:58,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 21:59:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 21:59:58,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 21:59:58,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 21:59:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 21:59:58,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 21:59:58,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-27 21:59:58,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 21:59:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-27 21:59:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-27 21:59:58,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-27 21:59:58,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-27 21:59:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-27 21:59:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-27 21:59:58,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-27 21:59:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-27 21:59:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-27 21:59:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-27 21:59:58,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-27 21:59:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-27 21:59:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-27 21:59:58,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-27 21:59:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-27 21:59:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-27 21:59:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-27 21:59:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-27 21:59:58,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-27 21:59:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-27 21:59:58,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-27 21:59:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-27 21:59:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-27 21:59:58,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-27 21:59:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-27 21:59:58,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-27 21:59:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-27 21:59:58,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-27 21:59:58,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-27 21:59:58,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-27 21:59:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-27 21:59:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-27 21:59:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-27 21:59:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-27 21:59:58,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-27 21:59:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-27 21:59:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-27 21:59:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-27 21:59:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-27 21:59:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-27 21:59:58,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-27 21:59:58,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 467 [2020-08-27 21:59:58,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-27 21:59:58,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-27 21:59:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-27 21:59:58,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-27 21:59:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-27 21:59:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-27 21:59:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 519 [2020-08-27 21:59:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-27 21:59:58,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-27 21:59:58,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-27 21:59:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-27 21:59:58,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-27 21:59:58,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-27 21:59:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:59:58,373 INFO L134 CoverageAnalysis]: Checked inductivity of 19084 backedges. 4945 proven. 2699 refuted. 0 times theorem prover too weak. 11440 trivial. 0 not checked. [2020-08-27 21:59:58,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941889758] [2020-08-27 21:59:58,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 21:59:58,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-08-27 21:59:58,374 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749365615] [2020-08-27 21:59:58,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-08-27 21:59:58,375 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:59:58,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-08-27 21:59:58,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-08-27 21:59:58,375 INFO L87 Difference]: Start difference. First operand 416 states and 472 transitions. Second operand 19 states. [2020-08-27 21:59:59,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:59:59,824 INFO L93 Difference]: Finished difference Result 620 states and 702 transitions. [2020-08-27 21:59:59,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-08-27 21:59:59,825 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 572 [2020-08-27 21:59:59,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:59:59,828 INFO L225 Difference]: With dead ends: 620 [2020-08-27 21:59:59,828 INFO L226 Difference]: Without dead ends: 419 [2020-08-27 21:59:59,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 357 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=886, Invalid=1766, Unknown=0, NotChecked=0, Total=2652 [2020-08-27 21:59:59,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2020-08-27 21:59:59,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 418. [2020-08-27 21:59:59,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 418 states. [2020-08-27 21:59:59,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 474 transitions. [2020-08-27 21:59:59,879 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 474 transitions. Word has length 572 [2020-08-27 21:59:59,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:59:59,880 INFO L479 AbstractCegarLoop]: Abstraction has 418 states and 474 transitions. [2020-08-27 21:59:59,880 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-08-27 21:59:59,880 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 474 transitions. [2020-08-27 21:59:59,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2020-08-27 21:59:59,885 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:59:59,885 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] [2020-08-27 21:59:59,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-08-27 21:59:59,885 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:59:59,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:59:59,886 INFO L82 PathProgramCache]: Analyzing trace with hash -847775853, now seen corresponding path program 30 times [2020-08-27 21:59:59,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:59:59,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632466304] [2020-08-27 21:59:59,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:00:00,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:00:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 22:00:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 22:00:00,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 22:00:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 22:00:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 22:00:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 22:00:00,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 22:00:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 22:00:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 22:00:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 22:00:00,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 22:00:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 22:00:00,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 22:00:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 22:00:00,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-27 22:00:00,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 22:00:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-27 22:00:00,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-27 22:00:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-27 22:00:00,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-27 22:00:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-27 22:00:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-27 22:00:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-27 22:00:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-27 22:00:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-27 22:00:00,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-27 22:00:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-27 22:00:00,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-27 22:00:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-27 22:00:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-27 22:00:00,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-27 22:00:00,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-27 22:00:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-27 22:00:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-27 22:00:00,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-27 22:00:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-27 22:00:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-27 22:00:00,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-27 22:00:00,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-27 22:00:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-27 22:00:00,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-27 22:00:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-27 22:00:00,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-27 22:00:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-27 22:00:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-27 22:00:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-27 22:00:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-27 22:00:00,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-27 22:00:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-27 22:00:00,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-27 22:00:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-27 22:00:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-27 22:00:00,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-27 22:00:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-27 22:00:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-27 22:00:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-27 22:00:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-27 22:00:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-27 22:00:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-27 22:00:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-27 22:00:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-27 22:00:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-27 22:00:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-27 22:00:00,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-27 22:00:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-27 22:00:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-27 22:00:00,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-27 22:00:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-27 22:00:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-27 22:00:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-27 22:00:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-27 22:00:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-27 22:00:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 19599 backedges. 2008 proven. 5249 refuted. 0 times theorem prover too weak. 12342 trivial. 0 not checked. [2020-08-27 22:00:00,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632466304] [2020-08-27 22:00:00,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 22:00:00,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-08-27 22:00:00,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523905915] [2020-08-27 22:00:00,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-08-27 22:00:00,709 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:00:00,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-08-27 22:00:00,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=300, Unknown=0, NotChecked=0, Total=380 [2020-08-27 22:00:00,710 INFO L87 Difference]: Start difference. First operand 418 states and 474 transitions. Second operand 20 states. [2020-08-27 22:00:01,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:00:01,667 INFO L93 Difference]: Finished difference Result 504 states and 565 transitions. [2020-08-27 22:00:01,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-27 22:00:01,668 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 579 [2020-08-27 22:00:01,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:00:01,671 INFO L225 Difference]: With dead ends: 504 [2020-08-27 22:00:01,671 INFO L226 Difference]: Without dead ends: 502 [2020-08-27 22:00:01,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=365, Invalid=1041, Unknown=0, NotChecked=0, Total=1406 [2020-08-27 22:00:01,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-08-27 22:00:01,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 478. [2020-08-27 22:00:01,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-27 22:00:01,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 538 transitions. [2020-08-27 22:00:01,742 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 538 transitions. Word has length 579 [2020-08-27 22:00:01,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:00:01,743 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 538 transitions. [2020-08-27 22:00:01,743 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-08-27 22:00:01,743 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 538 transitions. [2020-08-27 22:00:01,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 587 [2020-08-27 22:00:01,750 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:00:01,751 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] [2020-08-27 22:00:01,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-08-27 22:00:01,751 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:00:01,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:00:01,752 INFO L82 PathProgramCache]: Analyzing trace with hash 267632406, now seen corresponding path program 31 times [2020-08-27 22:00:01,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:00:01,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235192518] [2020-08-27 22:00:01,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:00:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:00:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 22:00:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 22:00:02,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 22:00:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 22:00:02,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 22:00:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 22:00:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 22:00:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 22:00:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 22:00:02,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 22:00:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 22:00:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 22:00:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 22:00:02,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 22:00:02,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-27 22:00:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 22:00:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-27 22:00:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-27 22:00:02,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-27 22:00:02,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-27 22:00:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-27 22:00:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-27 22:00:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-27 22:00:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-27 22:00:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-27 22:00:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-27 22:00:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-27 22:00:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-27 22:00:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-27 22:00:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-27 22:00:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-27 22:00:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-27 22:00:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-27 22:00:02,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-27 22:00:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-27 22:00:02,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-27 22:00:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-27 22:00:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-27 22:00:02,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-27 22:00:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-27 22:00:02,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-27 22:00:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-27 22:00:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-27 22:00:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-27 22:00:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-27 22:00:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-27 22:00:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-27 22:00:02,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-27 22:00:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-27 22:00:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-27 22:00:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-27 22:00:02,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-27 22:00:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-27 22:00:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-27 22:00:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-27 22:00:02,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-27 22:00:02,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-27 22:00:02,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-27 22:00:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-27 22:00:02,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-27 22:00:02,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-27 22:00:02,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-27 22:00:02,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-27 22:00:02,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-27 22:00:02,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-27 22:00:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 526 [2020-08-27 22:00:02,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-27 22:00:02,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-27 22:00:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-27 22:00:02,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-27 22:00:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-27 22:00:02,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-27 22:00:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-27 22:00:02,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:02,631 INFO L134 CoverageAnalysis]: Checked inductivity of 20121 backedges. 4227 proven. 4030 refuted. 0 times theorem prover too weak. 11864 trivial. 0 not checked. [2020-08-27 22:00:02,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235192518] [2020-08-27 22:00:02,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 22:00:02,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-27 22:00:02,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642402774] [2020-08-27 22:00:02,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-27 22:00:02,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:00:02,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-27 22:00:02,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2020-08-27 22:00:02,634 INFO L87 Difference]: Start difference. First operand 478 states and 538 transitions. Second operand 21 states. [2020-08-27 22:00:04,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:00:04,645 INFO L93 Difference]: Finished difference Result 714 states and 810 transitions. [2020-08-27 22:00:04,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-08-27 22:00:04,645 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 586 [2020-08-27 22:00:04,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:00:04,648 INFO L225 Difference]: With dead ends: 714 [2020-08-27 22:00:04,648 INFO L226 Difference]: Without dead ends: 479 [2020-08-27 22:00:04,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1311, Invalid=2595, Unknown=0, NotChecked=0, Total=3906 [2020-08-27 22:00:04,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2020-08-27 22:00:04,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 478. [2020-08-27 22:00:04,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-08-27 22:00:04,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 536 transitions. [2020-08-27 22:00:04,708 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 536 transitions. Word has length 586 [2020-08-27 22:00:04,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:00:04,709 INFO L479 AbstractCegarLoop]: Abstraction has 478 states and 536 transitions. [2020-08-27 22:00:04,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-27 22:00:04,709 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 536 transitions. [2020-08-27 22:00:04,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 594 [2020-08-27 22:00:04,716 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:00:04,716 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] [2020-08-27 22:00:04,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-08-27 22:00:04,716 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:00:04,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:00:04,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1197037185, now seen corresponding path program 32 times [2020-08-27 22:00:04,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:00:04,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101365011] [2020-08-27 22:00:04,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:00:04,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:00:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 22:00:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 22:00:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 22:00:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 22:00:05,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 22:00:05,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 22:00:05,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 22:00:05,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 22:00:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 22:00:05,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 22:00:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 22:00:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 22:00:05,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 22:00:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 22:00:05,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-27 22:00:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 22:00:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-27 22:00:05,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-27 22:00:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-27 22:00:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-27 22:00:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-27 22:00:05,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-27 22:00:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-27 22:00:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-27 22:00:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-27 22:00:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-27 22:00:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-27 22:00:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-27 22:00:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-27 22:00:05,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-27 22:00:05,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-27 22:00:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-27 22:00:05,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-27 22:00:05,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-27 22:00:05,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-27 22:00:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-27 22:00:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-27 22:00:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-27 22:00:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-27 22:00:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-27 22:00:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-27 22:00:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-27 22:00:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-27 22:00:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-27 22:00:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-27 22:00:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-27 22:00:05,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-27 22:00:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-27 22:00:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-27 22:00:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-27 22:00:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-27 22:00:05,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-27 22:00:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-27 22:00:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-27 22:00:05,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-27 22:00:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-27 22:00:05,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-27 22:00:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-27 22:00:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-27 22:00:05,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-27 22:00:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-27 22:00:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-27 22:00:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-27 22:00:05,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-27 22:00:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-27 22:00:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-27 22:00:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-27 22:00:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-27 22:00:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-27 22:00:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-27 22:00:05,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-27 22:00:05,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-27 22:00:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-27 22:00:05,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-27 22:00:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:05,813 INFO L134 CoverageAnalysis]: Checked inductivity of 20650 backedges. 2012 proven. 5637 refuted. 0 times theorem prover too weak. 13001 trivial. 0 not checked. [2020-08-27 22:00:05,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101365011] [2020-08-27 22:00:05,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 22:00:05,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-27 22:00:05,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316786730] [2020-08-27 22:00:05,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-27 22:00:05,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:00:05,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-27 22:00:05,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-08-27 22:00:05,816 INFO L87 Difference]: Start difference. First operand 478 states and 536 transitions. Second operand 21 states. [2020-08-27 22:00:06,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:00:06,829 INFO L93 Difference]: Finished difference Result 537 states and 603 transitions. [2020-08-27 22:00:06,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-08-27 22:00:06,830 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 593 [2020-08-27 22:00:06,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:00:06,833 INFO L225 Difference]: With dead ends: 537 [2020-08-27 22:00:06,833 INFO L226 Difference]: Without dead ends: 535 [2020-08-27 22:00:06,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=409, Invalid=1151, Unknown=0, NotChecked=0, Total=1560 [2020-08-27 22:00:06,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2020-08-27 22:00:06,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 505. [2020-08-27 22:00:06,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2020-08-27 22:00:06,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 570 transitions. [2020-08-27 22:00:06,893 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 570 transitions. Word has length 593 [2020-08-27 22:00:06,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:00:06,893 INFO L479 AbstractCegarLoop]: Abstraction has 505 states and 570 transitions. [2020-08-27 22:00:06,893 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-27 22:00:06,893 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 570 transitions. [2020-08-27 22:00:06,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2020-08-27 22:00:06,898 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:00:06,898 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] [2020-08-27 22:00:06,898 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-08-27 22:00:06,898 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:00:06,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:00:06,899 INFO L82 PathProgramCache]: Analyzing trace with hash 1218530218, now seen corresponding path program 33 times [2020-08-27 22:00:06,899 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:00:06,899 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674572107] [2020-08-27 22:00:06,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:00:07,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:00:07,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 22:00:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 22:00:07,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 22:00:07,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 22:00:07,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 22:00:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 22:00:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 22:00:07,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 22:00:07,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 22:00:07,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 22:00:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 22:00:07,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 22:00:07,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 22:00:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 22:00:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-27 22:00:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 22:00:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-27 22:00:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-27 22:00:07,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-27 22:00:07,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-27 22:00:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-27 22:00:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-27 22:00:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-27 22:00:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-27 22:00:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-27 22:00:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-27 22:00:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-27 22:00:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-27 22:00:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-27 22:00:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-27 22:00:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-27 22:00:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-27 22:00:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-27 22:00:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-27 22:00:07,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-27 22:00:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-27 22:00:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-27 22:00:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-27 22:00:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-27 22:00:07,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-27 22:00:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-27 22:00:07,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-27 22:00:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-27 22:00:07,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-27 22:00:07,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-27 22:00:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-27 22:00:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-27 22:00:07,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-27 22:00:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-27 22:00:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-27 22:00:07,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-27 22:00:07,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-27 22:00:07,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-27 22:00:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-27 22:00:07,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-27 22:00:07,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-27 22:00:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-27 22:00:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-27 22:00:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-27 22:00:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-27 22:00:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-27 22:00:07,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-27 22:00:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-27 22:00:07,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-27 22:00:07,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-27 22:00:07,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-27 22:00:07,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-27 22:00:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-27 22:00:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-27 22:00:07,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-27 22:00:07,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-27 22:00:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-27 22:00:07,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-27 22:00:07,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-27 22:00:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 589 [2020-08-27 22:00:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:07,811 INFO L134 CoverageAnalysis]: Checked inductivity of 21186 backedges. 342 proven. 8400 refuted. 0 times theorem prover too weak. 12444 trivial. 0 not checked. [2020-08-27 22:00:07,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674572107] [2020-08-27 22:00:07,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 22:00:07,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-08-27 22:00:07,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769262454] [2020-08-27 22:00:07,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-08-27 22:00:07,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:00:07,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-08-27 22:00:07,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2020-08-27 22:00:07,814 INFO L87 Difference]: Start difference. First operand 505 states and 570 transitions. Second operand 24 states. [2020-08-27 22:00:11,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 22:00:11,513 INFO L93 Difference]: Finished difference Result 898 states and 1049 transitions. [2020-08-27 22:00:11,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-08-27 22:00:11,514 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 600 [2020-08-27 22:00:11,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 22:00:11,517 INFO L225 Difference]: With dead ends: 898 [2020-08-27 22:00:11,517 INFO L226 Difference]: Without dead ends: 631 [2020-08-27 22:00:11,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5052 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=3553, Invalid=8879, Unknown=0, NotChecked=0, Total=12432 [2020-08-27 22:00:11,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-08-27 22:00:11,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 628. [2020-08-27 22:00:11,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-08-27 22:00:11,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 730 transitions. [2020-08-27 22:00:11,588 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 730 transitions. Word has length 600 [2020-08-27 22:00:11,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 22:00:11,588 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 730 transitions. [2020-08-27 22:00:11,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-08-27 22:00:11,588 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 730 transitions. [2020-08-27 22:00:11,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 857 [2020-08-27 22:00:11,596 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 22:00:11,597 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] [2020-08-27 22:00:11,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-08-27 22:00:11,597 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 22:00:11,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 22:00:11,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1731219376, now seen corresponding path program 34 times [2020-08-27 22:00:11,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 22:00:11,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382566192] [2020-08-27 22:00:11,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 22:00:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 22:00:12,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-27 22:00:12,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-27 22:00:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-27 22:00:12,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-08-27 22:00:12,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-08-27 22:00:12,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-08-27 22:00:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-08-27 22:00:12,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-08-27 22:00:12,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-08-27 22:00:12,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-08-27 22:00:12,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-08-27 22:00:12,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-08-27 22:00:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-08-27 22:00:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-08-27 22:00:12,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-08-27 22:00:12,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-08-27 22:00:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-08-27 22:00:12,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-08-27 22:00:12,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-08-27 22:00:12,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-08-27 22:00:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-08-27 22:00:12,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-08-27 22:00:12,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-08-27 22:00:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-08-27 22:00:12,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-08-27 22:00:12,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-08-27 22:00:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-08-27 22:00:12,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-08-27 22:00:12,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-08-27 22:00:12,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2020-08-27 22:00:12,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-08-27 22:00:12,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-08-27 22:00:12,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2020-08-27 22:00:12,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-08-27 22:00:12,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-08-27 22:00:12,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-08-27 22:00:12,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-08-27 22:00:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2020-08-27 22:00:12,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-08-27 22:00:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-08-27 22:00:12,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2020-08-27 22:00:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 346 [2020-08-27 22:00:12,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-08-27 22:00:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-08-27 22:00:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-08-27 22:00:12,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 377 [2020-08-27 22:00:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2020-08-27 22:00:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-08-27 22:00:12,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 398 [2020-08-27 22:00:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-08-27 22:00:12,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-08-27 22:00:12,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 422 [2020-08-27 22:00:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 429 [2020-08-27 22:00:12,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 436 [2020-08-27 22:00:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 443 [2020-08-27 22:00:12,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 450 [2020-08-27 22:00:12,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-08-27 22:00:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 464 [2020-08-27 22:00:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 474 [2020-08-27 22:00:12,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2020-08-27 22:00:12,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 488 [2020-08-27 22:00:12,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 495 [2020-08-27 22:00:12,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-08-27 22:00:12,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 509 [2020-08-27 22:00:12,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-08-27 22:00:12,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-08-27 22:00:12,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-08-27 22:00:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 540 [2020-08-27 22:00:12,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 547 [2020-08-27 22:00:12,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 554 [2020-08-27 22:00:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-08-27 22:00:12,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 568 [2020-08-27 22:00:12,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-08-27 22:00:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 582 [2020-08-27 22:00:12,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 595 [2020-08-27 22:00:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-08-27 22:00:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 609 [2020-08-27 22:00:12,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 616 [2020-08-27 22:00:12,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 623 [2020-08-27 22:00:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-08-27 22:00:12,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 640 [2020-08-27 22:00:12,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 647 [2020-08-27 22:00:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 654 [2020-08-27 22:00:12,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 661 [2020-08-27 22:00:12,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-08-27 22:00:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-08-27 22:00:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 685 [2020-08-27 22:00:12,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 692 [2020-08-27 22:00:12,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 699 [2020-08-27 22:00:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 706 [2020-08-27 22:00:12,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 713 [2020-08-27 22:00:12,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 720 [2020-08-27 22:00:12,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 730 [2020-08-27 22:00:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 737 [2020-08-27 22:00:12,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 744 [2020-08-27 22:00:12,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 751 [2020-08-27 22:00:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-08-27 22:00:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 765 [2020-08-27 22:00:12,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 772 [2020-08-27 22:00:12,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-08-27 22:00:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 789 [2020-08-27 22:00:12,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-08-27 22:00:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 803 [2020-08-27 22:00:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 810 [2020-08-27 22:00:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 817 [2020-08-27 22:00:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 824 [2020-08-27 22:00:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-08-27 22:00:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-08-27 22:00:12,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 845 [2020-08-27 22:00:12,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 22:00:12,848 INFO L134 CoverageAnalysis]: Checked inductivity of 44431 backedges. 11950 proven. 5563 refuted. 0 times theorem prover too weak. 26918 trivial. 0 not checked. [2020-08-27 22:00:12,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382566192] [2020-08-27 22:00:12,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-27 22:00:12,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-08-27 22:00:12,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621887254] [2020-08-27 22:00:12,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-08-27 22:00:12,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 22:00:12,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-08-27 22:00:12,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2020-08-27 22:00:12,851 INFO L87 Difference]: Start difference. First operand 628 states and 730 transitions. Second operand 23 states.