/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:49:56,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:49:56,481 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:49:56,528 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:49:56,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:49:56,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:49:56,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:49:56,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:49:56,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:49:56,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:49:56,553 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:49:56,559 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:49:56,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:49:56,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:49:56,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:49:56,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:49:56,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:49:56,565 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:49:56,567 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:49:56,569 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:49:56,570 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:49:56,572 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:49:56,573 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:49:56,574 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:49:56,576 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 17:49:56,577 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 17:49:56,577 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 17:49:56,578 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 17:49:56,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 17:49:56,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 17:49:56,580 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 17:49:56,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 17:49:56,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 17:49:56,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 17:49:56,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 17:49:56,584 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 17:49:56,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 17:49:56,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 17:49:56,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:49:56,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:49:56,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:49:56,589 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 17:49:56,601 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:49:56,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:49:56,603 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:49:56,603 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:49:56,604 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:49:56,604 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:49:56,604 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:49:56,604 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:49:56,604 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:49:56,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:49:56,605 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:49:56,605 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:49:56,605 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:49:56,605 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:49:56,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:49:56,606 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:49:56,606 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:49:56,606 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:49:56,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:49:56,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:49:56,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:49:56,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:49:56,607 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:49:57,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:49:57,069 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:49:57,073 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:49:57,075 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:49:57,075 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:49:57,077 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-09-04 17:49:57,183 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53e71043d/12ff9cdbbac94e15a8a5dfc570ad8eb2/FLAGd293cf1fc [2020-09-04 17:49:57,782 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:49:57,783 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-new/count_by_1_variant.i [2020-09-04 17:49:57,792 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53e71043d/12ff9cdbbac94e15a8a5dfc570ad8eb2/FLAGd293cf1fc [2020-09-04 17:49:58,123 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53e71043d/12ff9cdbbac94e15a8a5dfc570ad8eb2 [2020-09-04 17:49:58,139 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:49:58,142 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:49:58,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:49:58,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:49:58,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:49:58,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:49:58" (1/1) ... [2020-09-04 17:49:58,154 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15ad6291 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:49:58, skipping insertion in model container [2020-09-04 17:49:58,154 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:49:58" (1/1) ... [2020-09-04 17:49:58,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:49:58,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:49:58,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:49:58,407 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:49:58,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:49:58,448 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:49:58,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:49:58 WrapperNode [2020-09-04 17:49:58,449 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:49:58,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:49:58,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:49:58,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:49:58,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:49:58" (1/1) ... [2020-09-04 17:49:58,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:49:58" (1/1) ... [2020-09-04 17:49:58,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:49:58" (1/1) ... [2020-09-04 17:49:58,471 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:49:58" (1/1) ... [2020-09-04 17:49:58,475 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:49:58" (1/1) ... [2020-09-04 17:49:58,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:49:58" (1/1) ... [2020-09-04 17:49:58,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:49:58" (1/1) ... [2020-09-04 17:49:58,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:49:58,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:49:58,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:49:58,486 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:49:58,488 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:49:58" (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 [2020-09-04 17:49:58,651 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:49:58,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:49:58,652 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:49:58,652 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:49:58,652 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:49:58,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:49:58,652 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:49:58,653 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:49:58,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:49:58,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:49:58,653 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:49:58,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:49:58,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:49:58,862 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:49:58,863 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 17:49:58,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:49:58 BoogieIcfgContainer [2020-09-04 17:49:58,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:49:58,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:49:58,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:49:58,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:49:58,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:49:58" (1/3) ... [2020-09-04 17:49:58,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22689ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:49:58, skipping insertion in model container [2020-09-04 17:49:58,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:49:58" (2/3) ... [2020-09-04 17:49:58,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22689ab5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:49:58, skipping insertion in model container [2020-09-04 17:49:58,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:49:58" (3/3) ... [2020-09-04 17:49:58,892 INFO L109 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2020-09-04 17:49:58,911 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:49:58,926 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:49:58,953 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:49:58,989 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:49:58,989 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:49:58,990 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:49:58,990 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:49:58,990 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:49:58,990 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:49:58,990 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:49:58,990 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:49:59,025 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-09-04 17:49:59,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-04 17:49:59,051 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:49:59,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:49:59,058 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:49:59,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:49:59,067 INFO L82 PathProgramCache]: Analyzing trace with hash 576660498, now seen corresponding path program 1 times [2020-09-04 17:49:59,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:49:59,078 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [821574543] [2020-09-04 17:49:59,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:49:59,157 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:49:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:59,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:49:59,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:59,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:49:59,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [821574543] [2020-09-04 17:49:59,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:49:59,387 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:49:59,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926256496] [2020-09-04 17:49:59,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:49:59,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:49:59,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:49:59,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:49:59,411 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 5 states. [2020-09-04 17:49:59,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:49:59,520 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2020-09-04 17:49:59,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:49:59,523 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-09-04 17:49:59,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:49:59,535 INFO L225 Difference]: With dead ends: 46 [2020-09-04 17:49:59,536 INFO L226 Difference]: Without dead ends: 25 [2020-09-04 17:49:59,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 17:49:59,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-04 17:49:59,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2020-09-04 17:49:59,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-04 17:49:59,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-09-04 17:49:59,598 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 11 [2020-09-04 17:49:59,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:49:59,599 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-09-04 17:49:59,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:49:59,599 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-09-04 17:49:59,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-04 17:49:59,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:49:59,601 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:49:59,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:49:59,602 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:49:59,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:49:59,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1548867886, now seen corresponding path program 1 times [2020-09-04 17:49:59,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:49:59,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [226021066] [2020-09-04 17:49:59,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:49:59,642 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:49:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:59,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:49:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:59,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:49:59,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:49:59,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:49:59,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [226021066] [2020-09-04 17:49:59,753 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:49:59,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 17:49:59,754 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728081207] [2020-09-04 17:49:59,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 17:49:59,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:49:59,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 17:49:59,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-04 17:49:59,756 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2020-09-04 17:49:59,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:49:59,870 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-09-04 17:49:59,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 17:49:59,871 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-09-04 17:49:59,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:49:59,873 INFO L225 Difference]: With dead ends: 36 [2020-09-04 17:49:59,873 INFO L226 Difference]: Without dead ends: 34 [2020-09-04 17:49:59,875 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-04 17:49:59,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-04 17:49:59,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-09-04 17:49:59,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-04 17:49:59,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-09-04 17:49:59,888 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 20 [2020-09-04 17:49:59,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:49:59,889 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-09-04 17:49:59,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 17:49:59,889 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-09-04 17:49:59,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-04 17:49:59,890 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:49:59,891 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:49:59,891 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:49:59,892 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:49:59,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:49:59,892 INFO L82 PathProgramCache]: Analyzing trace with hash -677174382, now seen corresponding path program 2 times [2020-09-04 17:49:59,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:49:59,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706472110] [2020-09-04 17:49:59,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:49:59,900 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:49:59,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:00,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:00,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:00,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:00,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:00,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:00,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:00,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:00,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706472110] [2020-09-04 17:50:00,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:00,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 17:50:00,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139265548] [2020-09-04 17:50:00,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 17:50:00,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:00,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 17:50:00,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-04 17:50:00,075 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 9 states. [2020-09-04 17:50:00,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:00,244 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-09-04 17:50:00,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 17:50:00,245 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-09-04 17:50:00,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:00,247 INFO L225 Difference]: With dead ends: 45 [2020-09-04 17:50:00,247 INFO L226 Difference]: Without dead ends: 43 [2020-09-04 17:50:00,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2020-09-04 17:50:00,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-04 17:50:00,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2020-09-04 17:50:00,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-04 17:50:00,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2020-09-04 17:50:00,261 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 29 [2020-09-04 17:50:00,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:00,262 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2020-09-04 17:50:00,262 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 17:50:00,262 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2020-09-04 17:50:00,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-04 17:50:00,264 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:00,264 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:00,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:50:00,265 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:00,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:00,265 INFO L82 PathProgramCache]: Analyzing trace with hash 785729966, now seen corresponding path program 3 times [2020-09-04 17:50:00,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:00,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1566298134] [2020-09-04 17:50:00,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:00,274 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:00,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:00,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:00,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:00,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:00,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:00,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:00,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:00,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1566298134] [2020-09-04 17:50:00,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:00,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 17:50:00,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082237377] [2020-09-04 17:50:00,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 17:50:00,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:00,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 17:50:00,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-04 17:50:00,476 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 11 states. [2020-09-04 17:50:00,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:00,658 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-09-04 17:50:00,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 17:50:00,659 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 38 [2020-09-04 17:50:00,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:00,660 INFO L225 Difference]: With dead ends: 54 [2020-09-04 17:50:00,661 INFO L226 Difference]: Without dead ends: 52 [2020-09-04 17:50:00,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-04 17:50:00,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-04 17:50:00,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-04 17:50:00,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-04 17:50:00,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-09-04 17:50:00,674 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 38 [2020-09-04 17:50:00,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:00,674 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-09-04 17:50:00,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 17:50:00,675 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-09-04 17:50:00,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-04 17:50:00,677 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:00,677 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:00,677 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 17:50:00,677 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:00,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:00,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1857438482, now seen corresponding path program 4 times [2020-09-04 17:50:00,678 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:00,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772650765] [2020-09-04 17:50:00,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:00,687 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:00,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:00,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:00,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:00,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:00,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:00,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:00,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:00,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:50:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:00,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:00,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772650765] [2020-09-04 17:50:00,873 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:00,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 17:50:00,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133946467] [2020-09-04 17:50:00,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 17:50:00,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:00,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 17:50:00,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-04 17:50:00,875 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 13 states. [2020-09-04 17:50:01,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:01,114 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2020-09-04 17:50:01,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-04 17:50:01,114 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 47 [2020-09-04 17:50:01,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:01,116 INFO L225 Difference]: With dead ends: 63 [2020-09-04 17:50:01,116 INFO L226 Difference]: Without dead ends: 61 [2020-09-04 17:50:01,117 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2020-09-04 17:50:01,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-04 17:50:01,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2020-09-04 17:50:01,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-04 17:50:01,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2020-09-04 17:50:01,129 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 47 [2020-09-04 17:50:01,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:01,129 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2020-09-04 17:50:01,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 17:50:01,130 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2020-09-04 17:50:01,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-04 17:50:01,131 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:01,132 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:01,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 17:50:01,132 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:01,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:01,133 INFO L82 PathProgramCache]: Analyzing trace with hash -426927570, now seen corresponding path program 5 times [2020-09-04 17:50:01,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:01,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1854731431] [2020-09-04 17:50:01,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:01,139 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:01,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:01,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:01,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:01,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:01,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:01,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:01,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:01,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:50:01,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:01,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:50:01,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:01,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:01,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1854731431] [2020-09-04 17:50:01,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:01,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-04 17:50:01,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598368011] [2020-09-04 17:50:01,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 17:50:01,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:01,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 17:50:01,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-09-04 17:50:01,429 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 15 states. [2020-09-04 17:50:01,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:01,734 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2020-09-04 17:50:01,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 17:50:01,734 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-04 17:50:01,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:01,736 INFO L225 Difference]: With dead ends: 72 [2020-09-04 17:50:01,736 INFO L226 Difference]: Without dead ends: 70 [2020-09-04 17:50:01,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=186, Invalid=464, Unknown=0, NotChecked=0, Total=650 [2020-09-04 17:50:01,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-04 17:50:01,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2020-09-04 17:50:01,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-04 17:50:01,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions. [2020-09-04 17:50:01,749 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 56 [2020-09-04 17:50:01,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:01,749 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions. [2020-09-04 17:50:01,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 17:50:01,750 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions. [2020-09-04 17:50:01,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-04 17:50:01,751 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:01,751 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:01,751 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 17:50:01,752 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:01,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:01,752 INFO L82 PathProgramCache]: Analyzing trace with hash -32472430, now seen corresponding path program 6 times [2020-09-04 17:50:01,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:01,753 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1336469595] [2020-09-04 17:50:01,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:01,759 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:01,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:01,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:01,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:01,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:01,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:01,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:50:01,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:01,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:50:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:01,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:50:01,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:01,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:01,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1336469595] [2020-09-04 17:50:01,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:01,975 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-04 17:50:01,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091617899] [2020-09-04 17:50:01,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-04 17:50:01,976 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:01,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-04 17:50:01,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-04 17:50:01,977 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 17 states. [2020-09-04 17:50:02,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:02,321 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2020-09-04 17:50:02,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-04 17:50:02,322 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2020-09-04 17:50:02,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:02,323 INFO L225 Difference]: With dead ends: 81 [2020-09-04 17:50:02,324 INFO L226 Difference]: Without dead ends: 79 [2020-09-04 17:50:02,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=251, Invalid=619, Unknown=0, NotChecked=0, Total=870 [2020-09-04 17:50:02,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-04 17:50:02,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2020-09-04 17:50:02,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-09-04 17:50:02,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2020-09-04 17:50:02,337 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 65 [2020-09-04 17:50:02,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:02,337 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2020-09-04 17:50:02,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-04 17:50:02,338 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2020-09-04 17:50:02,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-04 17:50:02,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:02,339 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:02,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 17:50:02,339 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:02,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:02,340 INFO L82 PathProgramCache]: Analyzing trace with hash 872598190, now seen corresponding path program 7 times [2020-09-04 17:50:02,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:02,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880020787] [2020-09-04 17:50:02,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:02,345 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:02,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:02,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:02,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:50:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:50:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:50:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:50:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:02,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:02,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880020787] [2020-09-04 17:50:02,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:02,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-09-04 17:50:02,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713571232] [2020-09-04 17:50:02,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-04 17:50:02,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:02,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-04 17:50:02,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-04 17:50:02,607 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 19 states. [2020-09-04 17:50:03,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:03,009 INFO L93 Difference]: Finished difference Result 90 states and 90 transitions. [2020-09-04 17:50:03,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-04 17:50:03,011 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 74 [2020-09-04 17:50:03,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:03,014 INFO L225 Difference]: With dead ends: 90 [2020-09-04 17:50:03,014 INFO L226 Difference]: Without dead ends: 88 [2020-09-04 17:50:03,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=326, Invalid=796, Unknown=0, NotChecked=0, Total=1122 [2020-09-04 17:50:03,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-04 17:50:03,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-09-04 17:50:03,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-04 17:50:03,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2020-09-04 17:50:03,040 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 74 [2020-09-04 17:50:03,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:03,040 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2020-09-04 17:50:03,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-04 17:50:03,042 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2020-09-04 17:50:03,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-04 17:50:03,043 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:03,043 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:03,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 17:50:03,043 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:03,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:03,046 INFO L82 PathProgramCache]: Analyzing trace with hash -299245038, now seen corresponding path program 8 times [2020-09-04 17:50:03,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:03,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71111086] [2020-09-04 17:50:03,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:03,059 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:03,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:03,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:03,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:03,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:03,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:03,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:03,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:50:03,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:03,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:50:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:03,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:50:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:03,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:50:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:03,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:50:03,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:03,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:03,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71111086] [2020-09-04 17:50:03,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:03,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-09-04 17:50:03,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363996379] [2020-09-04 17:50:03,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-04 17:50:03,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:03,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-04 17:50:03,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-04 17:50:03,372 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 21 states. [2020-09-04 17:50:03,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:03,770 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2020-09-04 17:50:03,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-04 17:50:03,771 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 83 [2020-09-04 17:50:03,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:03,773 INFO L225 Difference]: With dead ends: 99 [2020-09-04 17:50:03,774 INFO L226 Difference]: Without dead ends: 97 [2020-09-04 17:50:03,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=411, Invalid=995, Unknown=0, NotChecked=0, Total=1406 [2020-09-04 17:50:03,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-04 17:50:03,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 95. [2020-09-04 17:50:03,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-04 17:50:03,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2020-09-04 17:50:03,790 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 83 [2020-09-04 17:50:03,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:03,791 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2020-09-04 17:50:03,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-04 17:50:03,791 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2020-09-04 17:50:03,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-09-04 17:50:03,792 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:03,793 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:03,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 17:50:03,793 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:03,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:03,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1245914322, now seen corresponding path program 9 times [2020-09-04 17:50:03,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:03,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057824138] [2020-09-04 17:50:03,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:03,801 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:04,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:04,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:04,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:04,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:04,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:50:04,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:04,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:50:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:04,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:50:04,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:04,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:50:04,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:04,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:50:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:04,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:50:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:04,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:04,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057824138] [2020-09-04 17:50:04,160 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:04,160 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-09-04 17:50:04,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609454064] [2020-09-04 17:50:04,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-04 17:50:04,161 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:04,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-04 17:50:04,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-09-04 17:50:04,163 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 23 states. [2020-09-04 17:50:04,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:04,725 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2020-09-04 17:50:04,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-04 17:50:04,725 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 92 [2020-09-04 17:50:04,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:04,727 INFO L225 Difference]: With dead ends: 108 [2020-09-04 17:50:04,727 INFO L226 Difference]: Without dead ends: 106 [2020-09-04 17:50:04,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=506, Invalid=1216, Unknown=0, NotChecked=0, Total=1722 [2020-09-04 17:50:04,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-04 17:50:04,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-09-04 17:50:04,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-04 17:50:04,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2020-09-04 17:50:04,753 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 92 [2020-09-04 17:50:04,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:04,759 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2020-09-04 17:50:04,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-04 17:50:04,759 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2020-09-04 17:50:04,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-09-04 17:50:04,761 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:04,766 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:04,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 17:50:04,767 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:04,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:04,767 INFO L82 PathProgramCache]: Analyzing trace with hash 2038063506, now seen corresponding path program 10 times [2020-09-04 17:50:04,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:04,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1325683513] [2020-09-04 17:50:04,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:04,777 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:05,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:05,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:05,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:05,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:05,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:05,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:05,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:05,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:50:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:05,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:50:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:05,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:50:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:05,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:50:05,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:05,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:50:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:05,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:50:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:05,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:50:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:05,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:05,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1325683513] [2020-09-04 17:50:05,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:05,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-09-04 17:50:05,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808410565] [2020-09-04 17:50:05,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-04 17:50:05,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:05,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-04 17:50:05,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-09-04 17:50:05,221 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 25 states. [2020-09-04 17:50:05,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:05,868 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions. [2020-09-04 17:50:05,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-04 17:50:05,869 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 101 [2020-09-04 17:50:05,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:05,871 INFO L225 Difference]: With dead ends: 117 [2020-09-04 17:50:05,871 INFO L226 Difference]: Without dead ends: 115 [2020-09-04 17:50:05,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=611, Invalid=1459, Unknown=0, NotChecked=0, Total=2070 [2020-09-04 17:50:05,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-04 17:50:05,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2020-09-04 17:50:05,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-09-04 17:50:05,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 113 transitions. [2020-09-04 17:50:05,884 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 113 transitions. Word has length 101 [2020-09-04 17:50:05,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:05,885 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 113 transitions. [2020-09-04 17:50:05,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-04 17:50:05,885 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 113 transitions. [2020-09-04 17:50:05,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-09-04 17:50:05,886 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:05,886 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:05,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 17:50:05,887 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:05,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:05,887 INFO L82 PathProgramCache]: Analyzing trace with hash 2017708974, now seen corresponding path program 11 times [2020-09-04 17:50:05,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:05,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179594769] [2020-09-04 17:50:05,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:05,897 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:06,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:06,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:06,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:06,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:06,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:06,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:06,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:06,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:06,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:50:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:06,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:50:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:06,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:50:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:06,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:50:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:06,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:50:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:06,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:50:06,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:06,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:50:06,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:06,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:50:06,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:06,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:06,320 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179594769] [2020-09-04 17:50:06,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:06,321 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2020-09-04 17:50:06,321 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886962910] [2020-09-04 17:50:06,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-04 17:50:06,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:06,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-04 17:50:06,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-09-04 17:50:06,323 INFO L87 Difference]: Start difference. First operand 113 states and 113 transitions. Second operand 27 states. [2020-09-04 17:50:07,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:07,152 INFO L93 Difference]: Finished difference Result 126 states and 126 transitions. [2020-09-04 17:50:07,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-04 17:50:07,153 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 110 [2020-09-04 17:50:07,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:07,154 INFO L225 Difference]: With dead ends: 126 [2020-09-04 17:50:07,154 INFO L226 Difference]: Without dead ends: 124 [2020-09-04 17:50:07,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=726, Invalid=1724, Unknown=0, NotChecked=0, Total=2450 [2020-09-04 17:50:07,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-04 17:50:07,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-09-04 17:50:07,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-04 17:50:07,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions. [2020-09-04 17:50:07,166 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 110 [2020-09-04 17:50:07,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:07,167 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions. [2020-09-04 17:50:07,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-04 17:50:07,167 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions. [2020-09-04 17:50:07,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-04 17:50:07,168 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:07,168 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:07,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 17:50:07,169 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:07,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:07,169 INFO L82 PathProgramCache]: Analyzing trace with hash 746193170, now seen corresponding path program 12 times [2020-09-04 17:50:07,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:07,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1732576262] [2020-09-04 17:50:07,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:07,174 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:07,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:07,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:07,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:07,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:07,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:07,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:07,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:50:07,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:07,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:50:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:07,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:50:07,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:07,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:50:07,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:07,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:50:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:07,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:50:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:07,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:50:07,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:07,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:50:07,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:07,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:50:07,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:07,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:07,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1732576262] [2020-09-04 17:50:07,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:07,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2020-09-04 17:50:07,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232868304] [2020-09-04 17:50:07,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-04 17:50:07,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:07,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-04 17:50:07,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=613, Unknown=0, NotChecked=0, Total=812 [2020-09-04 17:50:07,617 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 29 states. [2020-09-04 17:50:08,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:08,536 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions. [2020-09-04 17:50:08,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-04 17:50:08,536 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 119 [2020-09-04 17:50:08,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:08,538 INFO L225 Difference]: With dead ends: 135 [2020-09-04 17:50:08,538 INFO L226 Difference]: Without dead ends: 133 [2020-09-04 17:50:08,540 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 478 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=851, Invalid=2011, Unknown=0, NotChecked=0, Total=2862 [2020-09-04 17:50:08,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-09-04 17:50:08,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 131. [2020-09-04 17:50:08,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-09-04 17:50:08,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 131 transitions. [2020-09-04 17:50:08,550 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 131 transitions. Word has length 119 [2020-09-04 17:50:08,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:08,551 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 131 transitions. [2020-09-04 17:50:08,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-04 17:50:08,551 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 131 transitions. [2020-09-04 17:50:08,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-04 17:50:08,553 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:08,553 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:08,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 17:50:08,553 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:08,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:08,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1981783086, now seen corresponding path program 13 times [2020-09-04 17:50:08,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:08,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865188338] [2020-09-04 17:50:08,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:08,558 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:09,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:50:09,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:50:09,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:50:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:50:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:50:09,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:50:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:50:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:50:09,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:50:09,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:50:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:09,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:09,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865188338] [2020-09-04 17:50:09,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:09,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2020-09-04 17:50:09,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423195472] [2020-09-04 17:50:09,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-04 17:50:09,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:09,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-04 17:50:09,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=702, Unknown=0, NotChecked=0, Total=930 [2020-09-04 17:50:09,082 INFO L87 Difference]: Start difference. First operand 131 states and 131 transitions. Second operand 31 states. [2020-09-04 17:50:10,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:10,016 INFO L93 Difference]: Finished difference Result 144 states and 144 transitions. [2020-09-04 17:50:10,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-09-04 17:50:10,017 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 128 [2020-09-04 17:50:10,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:10,019 INFO L225 Difference]: With dead ends: 144 [2020-09-04 17:50:10,019 INFO L226 Difference]: Without dead ends: 142 [2020-09-04 17:50:10,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=986, Invalid=2320, Unknown=0, NotChecked=0, Total=3306 [2020-09-04 17:50:10,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-09-04 17:50:10,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-09-04 17:50:10,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-04 17:50:10,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions. [2020-09-04 17:50:10,037 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 128 [2020-09-04 17:50:10,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:10,038 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions. [2020-09-04 17:50:10,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-04 17:50:10,038 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions. [2020-09-04 17:50:10,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-04 17:50:10,041 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:10,042 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:10,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-04 17:50:10,042 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:10,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:10,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1705033874, now seen corresponding path program 14 times [2020-09-04 17:50:10,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:10,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1556742778] [2020-09-04 17:50:10,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:10,050 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:10,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:10,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:10,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:10,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:10,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:10,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:10,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:10,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:50:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:10,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:50:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:10,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:50:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:10,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:50:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:10,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:50:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:10,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:50:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:10,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:50:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:10,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:50:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:10,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:50:10,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:10,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:50:10,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:10,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:50:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:10,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1556742778] [2020-09-04 17:50:10,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:10,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2020-09-04 17:50:10,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644076938] [2020-09-04 17:50:10,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-09-04 17:50:10,734 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:10,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-09-04 17:50:10,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=259, Invalid=797, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 17:50:10,736 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 33 states. [2020-09-04 17:50:11,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:11,877 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions. [2020-09-04 17:50:11,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-09-04 17:50:11,877 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 137 [2020-09-04 17:50:11,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:11,879 INFO L225 Difference]: With dead ends: 153 [2020-09-04 17:50:11,879 INFO L226 Difference]: Without dead ends: 151 [2020-09-04 17:50:11,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 642 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1131, Invalid=2651, Unknown=0, NotChecked=0, Total=3782 [2020-09-04 17:50:11,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-09-04 17:50:11,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2020-09-04 17:50:11,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-09-04 17:50:11,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 149 transitions. [2020-09-04 17:50:11,901 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 149 transitions. Word has length 137 [2020-09-04 17:50:11,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:11,902 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 149 transitions. [2020-09-04 17:50:11,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-09-04 17:50:11,902 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 149 transitions. [2020-09-04 17:50:11,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-04 17:50:11,904 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:11,905 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:11,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-04 17:50:11,905 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:11,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:11,906 INFO L82 PathProgramCache]: Analyzing trace with hash 400051374, now seen corresponding path program 15 times [2020-09-04 17:50:11,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:11,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122700685] [2020-09-04 17:50:11,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:11,914 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:12,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:12,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:50:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:50:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:50:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:50:12,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:50:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:50:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:50:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:50:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:50:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:50:12,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:50:12,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:50:12,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:12,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:12,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122700685] [2020-09-04 17:50:12,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:12,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [35] imperfect sequences [] total 35 [2020-09-04 17:50:12,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691430139] [2020-09-04 17:50:12,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-09-04 17:50:12,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:12,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-09-04 17:50:12,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=292, Invalid=898, Unknown=0, NotChecked=0, Total=1190 [2020-09-04 17:50:12,760 INFO L87 Difference]: Start difference. First operand 149 states and 149 transitions. Second operand 35 states. [2020-09-04 17:50:13,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:13,847 INFO L93 Difference]: Finished difference Result 162 states and 162 transitions. [2020-09-04 17:50:13,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-09-04 17:50:13,848 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 146 [2020-09-04 17:50:13,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:13,852 INFO L225 Difference]: With dead ends: 162 [2020-09-04 17:50:13,852 INFO L226 Difference]: Without dead ends: 160 [2020-09-04 17:50:13,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 733 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1286, Invalid=3004, Unknown=0, NotChecked=0, Total=4290 [2020-09-04 17:50:13,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-09-04 17:50:13,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2020-09-04 17:50:13,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-04 17:50:13,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions. [2020-09-04 17:50:13,867 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 146 [2020-09-04 17:50:13,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:13,868 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions. [2020-09-04 17:50:13,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-09-04 17:50:13,868 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions. [2020-09-04 17:50:13,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-09-04 17:50:13,870 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:13,870 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:13,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-04 17:50:13,871 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:13,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:13,871 INFO L82 PathProgramCache]: Analyzing trace with hash -714694638, now seen corresponding path program 16 times [2020-09-04 17:50:13,871 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:13,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1604231339] [2020-09-04 17:50:13,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:13,877 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:14,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:14,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:14,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:14,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:14,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:14,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:14,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:50:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:14,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:50:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:14,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:50:14,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:14,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:50:14,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:14,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:50:14,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:14,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:50:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:14,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:50:14,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:14,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:50:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:14,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:50:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:14,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:50:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:14,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:50:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:14,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:50:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:14,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:50:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:14,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:14,739 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1604231339] [2020-09-04 17:50:14,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:14,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2020-09-04 17:50:14,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030812957] [2020-09-04 17:50:14,742 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-09-04 17:50:14,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:14,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-09-04 17:50:14,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=1005, Unknown=0, NotChecked=0, Total=1332 [2020-09-04 17:50:14,744 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 37 states. [2020-09-04 17:50:15,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:15,936 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions. [2020-09-04 17:50:15,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-09-04 17:50:15,936 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 155 [2020-09-04 17:50:15,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:15,939 INFO L225 Difference]: With dead ends: 171 [2020-09-04 17:50:15,939 INFO L226 Difference]: Without dead ends: 169 [2020-09-04 17:50:15,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1451, Invalid=3379, Unknown=0, NotChecked=0, Total=4830 [2020-09-04 17:50:15,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-09-04 17:50:15,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2020-09-04 17:50:15,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-09-04 17:50:15,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 167 transitions. [2020-09-04 17:50:15,951 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 167 transitions. Word has length 155 [2020-09-04 17:50:15,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:15,952 INFO L479 AbstractCegarLoop]: Abstraction has 167 states and 167 transitions. [2020-09-04 17:50:15,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-09-04 17:50:15,952 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 167 transitions. [2020-09-04 17:50:15,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-04 17:50:15,954 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:15,954 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:15,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-04 17:50:15,955 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:15,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:15,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1275732690, now seen corresponding path program 17 times [2020-09-04 17:50:15,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:15,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410999401] [2020-09-04 17:50:15,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:15,964 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:16,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:16,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:16,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:16,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:16,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:16,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:16,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:50:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:16,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:50:16,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:16,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:50:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:16,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:50:16,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:16,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:50:16,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:16,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:50:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:16,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:50:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:16,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:50:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:16,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:50:16,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:16,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:50:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:16,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:50:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:16,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:50:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:16,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:50:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:16,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:50:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:16,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:16,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410999401] [2020-09-04 17:50:16,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:16,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [] total 39 [2020-09-04 17:50:16,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933725079] [2020-09-04 17:50:16,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-09-04 17:50:16,840 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:16,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-09-04 17:50:16,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=364, Invalid=1118, Unknown=0, NotChecked=0, Total=1482 [2020-09-04 17:50:16,849 INFO L87 Difference]: Start difference. First operand 167 states and 167 transitions. Second operand 39 states. [2020-09-04 17:50:18,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:18,229 INFO L93 Difference]: Finished difference Result 180 states and 180 transitions. [2020-09-04 17:50:18,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-09-04 17:50:18,230 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 164 [2020-09-04 17:50:18,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:18,231 INFO L225 Difference]: With dead ends: 180 [2020-09-04 17:50:18,231 INFO L226 Difference]: Without dead ends: 178 [2020-09-04 17:50:18,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 933 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1626, Invalid=3776, Unknown=0, NotChecked=0, Total=5402 [2020-09-04 17:50:18,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-04 17:50:18,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 176. [2020-09-04 17:50:18,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-04 17:50:18,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 176 transitions. [2020-09-04 17:50:18,243 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 176 transitions. Word has length 164 [2020-09-04 17:50:18,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:18,244 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 176 transitions. [2020-09-04 17:50:18,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-09-04 17:50:18,244 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 176 transitions. [2020-09-04 17:50:18,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-09-04 17:50:18,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:18,246 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:18,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-04 17:50:18,247 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:18,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:18,247 INFO L82 PathProgramCache]: Analyzing trace with hash -29122670, now seen corresponding path program 18 times [2020-09-04 17:50:18,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:18,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999795624] [2020-09-04 17:50:18,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:18,257 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:19,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:19,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:19,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:19,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:19,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:19,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:19,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:19,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:50:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:19,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:50:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:19,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:50:19,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:19,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:50:19,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:19,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:50:19,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:19,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:50:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:19,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:50:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:19,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:50:19,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:19,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:50:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:19,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:50:19,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:19,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:50:19,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:19,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:50:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:19,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:50:19,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:19,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:50:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:19,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:50:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:19,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:19,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999795624] [2020-09-04 17:50:19,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:19,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [41] imperfect sequences [] total 41 [2020-09-04 17:50:19,202 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484542541] [2020-09-04 17:50:19,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-09-04 17:50:19,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:19,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-09-04 17:50:19,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=403, Invalid=1237, Unknown=0, NotChecked=0, Total=1640 [2020-09-04 17:50:19,205 INFO L87 Difference]: Start difference. First operand 176 states and 176 transitions. Second operand 41 states. [2020-09-04 17:50:20,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:20,755 INFO L93 Difference]: Finished difference Result 189 states and 189 transitions. [2020-09-04 17:50:20,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-09-04 17:50:20,756 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 173 [2020-09-04 17:50:20,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:20,758 INFO L225 Difference]: With dead ends: 189 [2020-09-04 17:50:20,758 INFO L226 Difference]: Without dead ends: 187 [2020-09-04 17:50:20,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1042 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1811, Invalid=4195, Unknown=0, NotChecked=0, Total=6006 [2020-09-04 17:50:20,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-09-04 17:50:20,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2020-09-04 17:50:20,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-09-04 17:50:20,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 185 transitions. [2020-09-04 17:50:20,771 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 185 transitions. Word has length 173 [2020-09-04 17:50:20,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:20,772 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 185 transitions. [2020-09-04 17:50:20,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-09-04 17:50:20,772 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 185 transitions. [2020-09-04 17:50:20,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-04 17:50:20,774 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:20,774 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:20,775 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-04 17:50:20,775 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:20,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:20,775 INFO L82 PathProgramCache]: Analyzing trace with hash 251678126, now seen corresponding path program 19 times [2020-09-04 17:50:20,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:20,776 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247021351] [2020-09-04 17:50:20,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:20,785 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:21,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:21,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:21,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:21,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:21,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:21,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:50:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:21,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:50:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:21,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:50:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:21,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:50:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:21,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:50:21,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:21,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:50:21,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:21,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:50:21,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:21,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:50:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:21,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:50:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:21,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:50:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:21,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:50:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:21,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:50:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:21,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:50:21,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:21,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:50:21,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:21,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:50:21,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:21,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:50:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:21,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:21,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [247021351] [2020-09-04 17:50:21,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:21,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [43] imperfect sequences [] total 43 [2020-09-04 17:50:21,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892064217] [2020-09-04 17:50:21,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-09-04 17:50:21,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:21,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-09-04 17:50:21,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=444, Invalid=1362, Unknown=0, NotChecked=0, Total=1806 [2020-09-04 17:50:21,851 INFO L87 Difference]: Start difference. First operand 185 states and 185 transitions. Second operand 43 states. [2020-09-04 17:50:23,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:23,580 INFO L93 Difference]: Finished difference Result 198 states and 198 transitions. [2020-09-04 17:50:23,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-09-04 17:50:23,581 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 182 [2020-09-04 17:50:23,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:23,582 INFO L225 Difference]: With dead ends: 198 [2020-09-04 17:50:23,583 INFO L226 Difference]: Without dead ends: 196 [2020-09-04 17:50:23,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1157 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=2006, Invalid=4636, Unknown=0, NotChecked=0, Total=6642 [2020-09-04 17:50:23,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-09-04 17:50:23,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2020-09-04 17:50:23,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-09-04 17:50:23,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 194 transitions. [2020-09-04 17:50:23,599 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 194 transitions. Word has length 182 [2020-09-04 17:50:23,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:23,600 INFO L479 AbstractCegarLoop]: Abstraction has 194 states and 194 transitions. [2020-09-04 17:50:23,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-09-04 17:50:23,600 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 194 transitions. [2020-09-04 17:50:23,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-09-04 17:50:23,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:23,603 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:23,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-04 17:50:23,604 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:23,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:23,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1263550702, now seen corresponding path program 20 times [2020-09-04 17:50:23,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:23,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2065786058] [2020-09-04 17:50:23,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:23,617 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:24,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:24,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:24,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:24,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:24,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:24,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:24,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:50:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:24,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:50:24,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:24,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:50:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:24,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:50:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:24,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:50:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:24,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:50:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:24,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:50:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:24,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:50:24,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:24,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:50:24,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:24,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:50:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:24,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:50:24,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:24,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:50:24,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:24,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:50:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:24,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:50:24,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:24,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:50:24,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:24,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:50:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:24,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:50:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:24,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:24,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2065786058] [2020-09-04 17:50:24,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:24,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [] total 45 [2020-09-04 17:50:24,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758414710] [2020-09-04 17:50:24,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-09-04 17:50:24,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:24,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-09-04 17:50:24,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=487, Invalid=1493, Unknown=0, NotChecked=0, Total=1980 [2020-09-04 17:50:24,765 INFO L87 Difference]: Start difference. First operand 194 states and 194 transitions. Second operand 45 states. [2020-09-04 17:50:26,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:26,655 INFO L93 Difference]: Finished difference Result 207 states and 207 transitions. [2020-09-04 17:50:26,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-09-04 17:50:26,655 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 191 [2020-09-04 17:50:26,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:26,657 INFO L225 Difference]: With dead ends: 207 [2020-09-04 17:50:26,657 INFO L226 Difference]: Without dead ends: 205 [2020-09-04 17:50:26,659 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1278 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=2211, Invalid=5099, Unknown=0, NotChecked=0, Total=7310 [2020-09-04 17:50:26,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2020-09-04 17:50:26,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 203. [2020-09-04 17:50:26,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-09-04 17:50:26,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 203 transitions. [2020-09-04 17:50:26,669 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 203 transitions. Word has length 191 [2020-09-04 17:50:26,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:26,670 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 203 transitions. [2020-09-04 17:50:26,670 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-09-04 17:50:26,670 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 203 transitions. [2020-09-04 17:50:26,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-09-04 17:50:26,672 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:26,672 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 21, 21, 21, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:26,672 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-09-04 17:50:26,672 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:26,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:26,673 INFO L82 PathProgramCache]: Analyzing trace with hash -612393426, now seen corresponding path program 21 times [2020-09-04 17:50:26,673 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:26,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699080510] [2020-09-04 17:50:26,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:26,684 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:27,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:27,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:27,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:50:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:50:27,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:50:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:50:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:50:27,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:50:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:50:27,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:50:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:50:27,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:50:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:50:27,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:50:27,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:50:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:50:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:50:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:50:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:50:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:50:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:27,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:27,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699080510] [2020-09-04 17:50:27,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:27,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [47] imperfect sequences [] total 47 [2020-09-04 17:50:27,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208698644] [2020-09-04 17:50:27,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-09-04 17:50:27,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:27,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-09-04 17:50:27,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=532, Invalid=1630, Unknown=0, NotChecked=0, Total=2162 [2020-09-04 17:50:27,913 INFO L87 Difference]: Start difference. First operand 203 states and 203 transitions. Second operand 47 states. [2020-09-04 17:50:30,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:30,032 INFO L93 Difference]: Finished difference Result 216 states and 216 transitions. [2020-09-04 17:50:30,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-09-04 17:50:30,034 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 200 [2020-09-04 17:50:30,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:30,036 INFO L225 Difference]: With dead ends: 216 [2020-09-04 17:50:30,037 INFO L226 Difference]: Without dead ends: 214 [2020-09-04 17:50:30,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1405 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2426, Invalid=5584, Unknown=0, NotChecked=0, Total=8010 [2020-09-04 17:50:30,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-09-04 17:50:30,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 212. [2020-09-04 17:50:30,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-04 17:50:30,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 212 transitions. [2020-09-04 17:50:30,050 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 212 transitions. Word has length 200 [2020-09-04 17:50:30,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:30,051 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 212 transitions. [2020-09-04 17:50:30,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-09-04 17:50:30,051 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 212 transitions. [2020-09-04 17:50:30,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-04 17:50:30,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:30,053 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:30,053 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-09-04 17:50:30,053 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:30,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:30,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1625096558, now seen corresponding path program 22 times [2020-09-04 17:50:30,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:30,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772681797] [2020-09-04 17:50:30,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:30,063 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:31,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:50:31,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:50:31,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:50:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:50:31,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:50:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:50:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:50:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:50:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:50:31,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:50:31,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:50:31,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:50:31,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:50:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:50:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:50:31,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:50:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:50:31,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:50:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:50:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:31,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:31,452 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772681797] [2020-09-04 17:50:31,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:31,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [49] imperfect sequences [] total 49 [2020-09-04 17:50:31,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521869582] [2020-09-04 17:50:31,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-09-04 17:50:31,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:31,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-09-04 17:50:31,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=579, Invalid=1773, Unknown=0, NotChecked=0, Total=2352 [2020-09-04 17:50:31,454 INFO L87 Difference]: Start difference. First operand 212 states and 212 transitions. Second operand 49 states. [2020-09-04 17:50:33,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:33,759 INFO L93 Difference]: Finished difference Result 225 states and 225 transitions. [2020-09-04 17:50:33,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-09-04 17:50:33,760 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 209 [2020-09-04 17:50:33,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:33,762 INFO L225 Difference]: With dead ends: 225 [2020-09-04 17:50:33,762 INFO L226 Difference]: Without dead ends: 223 [2020-09-04 17:50:33,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1538 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2651, Invalid=6091, Unknown=0, NotChecked=0, Total=8742 [2020-09-04 17:50:33,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2020-09-04 17:50:33,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 221. [2020-09-04 17:50:33,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-09-04 17:50:33,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 221 transitions. [2020-09-04 17:50:33,776 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 221 transitions. Word has length 209 [2020-09-04 17:50:33,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:33,777 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 221 transitions. [2020-09-04 17:50:33,777 INFO L480 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-09-04 17:50:33,777 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 221 transitions. [2020-09-04 17:50:33,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-09-04 17:50:33,779 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:33,779 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:33,779 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-09-04 17:50:33,780 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:33,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:33,780 INFO L82 PathProgramCache]: Analyzing trace with hash 972803758, now seen corresponding path program 23 times [2020-09-04 17:50:33,780 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:33,781 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460808369] [2020-09-04 17:50:33,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:33,785 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:33,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:35,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:50:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:50:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:50:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:50:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:50:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:50:35,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:50:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:50:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:50:35,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:50:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:50:35,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:50:35,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:50:35,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:50:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:50:35,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:50:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:50:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:50:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:50:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:50:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:35,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:35,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460808369] [2020-09-04 17:50:35,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:35,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [51] imperfect sequences [] total 51 [2020-09-04 17:50:35,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829813876] [2020-09-04 17:50:35,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-09-04 17:50:35,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:35,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-09-04 17:50:35,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=628, Invalid=1922, Unknown=0, NotChecked=0, Total=2550 [2020-09-04 17:50:35,223 INFO L87 Difference]: Start difference. First operand 221 states and 221 transitions. Second operand 51 states. [2020-09-04 17:50:37,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:37,667 INFO L93 Difference]: Finished difference Result 234 states and 234 transitions. [2020-09-04 17:50:37,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-09-04 17:50:37,668 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 218 [2020-09-04 17:50:37,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:37,670 INFO L225 Difference]: With dead ends: 234 [2020-09-04 17:50:37,670 INFO L226 Difference]: Without dead ends: 232 [2020-09-04 17:50:37,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1677 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2886, Invalid=6620, Unknown=0, NotChecked=0, Total=9506 [2020-09-04 17:50:37,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-09-04 17:50:37,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 230. [2020-09-04 17:50:37,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-09-04 17:50:37,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 230 transitions. [2020-09-04 17:50:37,684 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 230 transitions. Word has length 218 [2020-09-04 17:50:37,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:37,685 INFO L479 AbstractCegarLoop]: Abstraction has 230 states and 230 transitions. [2020-09-04 17:50:37,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-09-04 17:50:37,685 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 230 transitions. [2020-09-04 17:50:37,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-09-04 17:50:37,686 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:37,687 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:37,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-09-04 17:50:37,687 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:37,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:37,688 INFO L82 PathProgramCache]: Analyzing trace with hash -1240113646, now seen corresponding path program 24 times [2020-09-04 17:50:37,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:37,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431504898] [2020-09-04 17:50:37,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:37,695 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:39,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:39,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:50:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:50:39,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:50:39,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:50:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:50:39,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:50:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:50:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:50:39,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:50:39,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:50:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:50:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:50:39,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:50:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:50:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:50:39,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:50:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:50:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:50:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:50:39,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:50:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:50:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:39,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:39,298 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431504898] [2020-09-04 17:50:39,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:39,299 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [53] imperfect sequences [] total 53 [2020-09-04 17:50:39,299 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500515993] [2020-09-04 17:50:39,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-09-04 17:50:39,300 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:39,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-09-04 17:50:39,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=679, Invalid=2077, Unknown=0, NotChecked=0, Total=2756 [2020-09-04 17:50:39,301 INFO L87 Difference]: Start difference. First operand 230 states and 230 transitions. Second operand 53 states. [2020-09-04 17:50:41,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:41,931 INFO L93 Difference]: Finished difference Result 243 states and 243 transitions. [2020-09-04 17:50:41,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-09-04 17:50:41,931 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 227 [2020-09-04 17:50:41,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:41,934 INFO L225 Difference]: With dead ends: 243 [2020-09-04 17:50:41,934 INFO L226 Difference]: Without dead ends: 241 [2020-09-04 17:50:41,938 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1822 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=3131, Invalid=7171, Unknown=0, NotChecked=0, Total=10302 [2020-09-04 17:50:41,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-09-04 17:50:41,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 239. [2020-09-04 17:50:41,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-09-04 17:50:41,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2020-09-04 17:50:41,958 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 227 [2020-09-04 17:50:41,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:41,958 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2020-09-04 17:50:41,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-09-04 17:50:41,959 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2020-09-04 17:50:41,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-09-04 17:50:41,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:41,960 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:41,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-09-04 17:50:41,961 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:41,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:41,961 INFO L82 PathProgramCache]: Analyzing trace with hash 956096302, now seen corresponding path program 25 times [2020-09-04 17:50:41,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:41,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275316141] [2020-09-04 17:50:41,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:41,970 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:42,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:43,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:50:43,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:50:43,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:50:43,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:50:43,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:50:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:50:43,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:50:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:50:43,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:50:43,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:50:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:50:43,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:50:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:50:43,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:50:43,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:50:43,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:50:43,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:50:43,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:50:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:50:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:50:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:50:43,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:50:43,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:43,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:43,715 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275316141] [2020-09-04 17:50:43,716 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:43,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [55] imperfect sequences [] total 55 [2020-09-04 17:50:43,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239955986] [2020-09-04 17:50:43,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-09-04 17:50:43,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:43,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-09-04 17:50:43,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=732, Invalid=2238, Unknown=0, NotChecked=0, Total=2970 [2020-09-04 17:50:43,719 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand 55 states. [2020-09-04 17:50:46,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:46,774 INFO L93 Difference]: Finished difference Result 252 states and 252 transitions. [2020-09-04 17:50:46,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2020-09-04 17:50:46,774 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 236 [2020-09-04 17:50:46,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:46,776 INFO L225 Difference]: With dead ends: 252 [2020-09-04 17:50:46,777 INFO L226 Difference]: Without dead ends: 250 [2020-09-04 17:50:46,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1973 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=3386, Invalid=7744, Unknown=0, NotChecked=0, Total=11130 [2020-09-04 17:50:46,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-09-04 17:50:46,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 248. [2020-09-04 17:50:46,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-09-04 17:50:46,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 248 transitions. [2020-09-04 17:50:46,791 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 248 transitions. Word has length 236 [2020-09-04 17:50:46,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:46,792 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 248 transitions. [2020-09-04 17:50:46,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-09-04 17:50:46,792 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 248 transitions. [2020-09-04 17:50:46,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-09-04 17:50:46,794 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:46,794 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:46,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-09-04 17:50:46,795 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:46,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:46,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1006707310, now seen corresponding path program 26 times [2020-09-04 17:50:46,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:46,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295459595] [2020-09-04 17:50:46,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:46,805 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:46,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:50:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:50:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:50:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:50:48,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:50:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:50:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:50:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:50:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:50:48,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:50:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:50:48,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:50:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:50:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:50:48,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:50:48,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:50:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:50:48,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:50:48,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:50:48,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:50:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:50:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:50:48,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:50:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:48,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:48,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295459595] [2020-09-04 17:50:48,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:48,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [] total 57 [2020-09-04 17:50:48,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019547412] [2020-09-04 17:50:48,565 INFO L459 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-09-04 17:50:48,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:48,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-09-04 17:50:48,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=787, Invalid=2405, Unknown=0, NotChecked=0, Total=3192 [2020-09-04 17:50:48,567 INFO L87 Difference]: Start difference. First operand 248 states and 248 transitions. Second operand 57 states. [2020-09-04 17:50:51,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:51,677 INFO L93 Difference]: Finished difference Result 261 states and 261 transitions. [2020-09-04 17:50:51,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-09-04 17:50:51,677 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 245 [2020-09-04 17:50:51,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:51,680 INFO L225 Difference]: With dead ends: 261 [2020-09-04 17:50:51,680 INFO L226 Difference]: Without dead ends: 259 [2020-09-04 17:50:51,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2130 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3651, Invalid=8339, Unknown=0, NotChecked=0, Total=11990 [2020-09-04 17:50:51,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-09-04 17:50:51,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 257. [2020-09-04 17:50:51,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2020-09-04 17:50:51,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 257 transitions. [2020-09-04 17:50:51,694 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 257 transitions. Word has length 245 [2020-09-04 17:50:51,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:51,694 INFO L479 AbstractCegarLoop]: Abstraction has 257 states and 257 transitions. [2020-09-04 17:50:51,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-09-04 17:50:51,695 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 257 transitions. [2020-09-04 17:50:51,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-09-04 17:50:51,696 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:51,696 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:51,697 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-09-04 17:50:51,697 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:51,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:51,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1426771886, now seen corresponding path program 27 times [2020-09-04 17:50:51,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:51,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1777096468] [2020-09-04 17:50:51,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:51,712 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:53,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:53,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:53,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:53,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:50:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:50:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:50:53,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:50:53,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:50:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:50:53,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:50:53,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:50:53,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:50:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:50:53,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:50:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:50:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:50:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:50:53,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:50:53,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:50:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:50:53,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:50:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:50:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:50:53,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:50:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:50:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:50:53,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:50:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:53,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:53,722 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1777096468] [2020-09-04 17:50:53,722 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:53,723 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [59] imperfect sequences [] total 59 [2020-09-04 17:50:53,723 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521226918] [2020-09-04 17:50:53,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-09-04 17:50:53,723 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:53,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-09-04 17:50:53,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=844, Invalid=2578, Unknown=0, NotChecked=0, Total=3422 [2020-09-04 17:50:53,724 INFO L87 Difference]: Start difference. First operand 257 states and 257 transitions. Second operand 59 states. [2020-09-04 17:50:57,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:50:57,368 INFO L93 Difference]: Finished difference Result 270 states and 270 transitions. [2020-09-04 17:50:57,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2020-09-04 17:50:57,369 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 254 [2020-09-04 17:50:57,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:50:57,371 INFO L225 Difference]: With dead ends: 270 [2020-09-04 17:50:57,371 INFO L226 Difference]: Without dead ends: 268 [2020-09-04 17:50:57,372 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2293 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3926, Invalid=8956, Unknown=0, NotChecked=0, Total=12882 [2020-09-04 17:50:57,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-09-04 17:50:57,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 266. [2020-09-04 17:50:57,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-09-04 17:50:57,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 266 transitions. [2020-09-04 17:50:57,388 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 266 transitions. Word has length 254 [2020-09-04 17:50:57,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:50:57,389 INFO L479 AbstractCegarLoop]: Abstraction has 266 states and 266 transitions. [2020-09-04 17:50:57,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-09-04 17:50:57,389 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 266 transitions. [2020-09-04 17:50:57,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-04 17:50:57,391 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:50:57,391 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:50:57,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-09-04 17:50:57,391 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:50:57,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:50:57,392 INFO L82 PathProgramCache]: Analyzing trace with hash -447251182, now seen corresponding path program 28 times [2020-09-04 17:50:57,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:50:57,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699877579] [2020-09-04 17:50:57,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:50:57,398 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:50:57,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:50:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:50:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:50:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:50:59,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:50:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:50:59,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:50:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:50:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:50:59,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:50:59,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:50:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:50:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:50:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:50:59,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:50:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:50:59,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:50:59,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:50:59,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:50:59,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:50:59,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:50:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:50:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:50:59,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:50:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:50:59,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:50:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:50:59,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:50:59,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:50:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:50:59,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:50:59,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699877579] [2020-09-04 17:50:59,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:50:59,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [] total 61 [2020-09-04 17:50:59,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715876374] [2020-09-04 17:50:59,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-09-04 17:50:59,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:50:59,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-09-04 17:50:59,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=903, Invalid=2757, Unknown=0, NotChecked=0, Total=3660 [2020-09-04 17:50:59,499 INFO L87 Difference]: Start difference. First operand 266 states and 266 transitions. Second operand 61 states. [2020-09-04 17:51:03,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:51:03,174 INFO L93 Difference]: Finished difference Result 279 states and 279 transitions. [2020-09-04 17:51:03,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 90 states. [2020-09-04 17:51:03,175 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 263 [2020-09-04 17:51:03,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:51:03,177 INFO L225 Difference]: With dead ends: 279 [2020-09-04 17:51:03,177 INFO L226 Difference]: Without dead ends: 277 [2020-09-04 17:51:03,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2462 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=4211, Invalid=9595, Unknown=0, NotChecked=0, Total=13806 [2020-09-04 17:51:03,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-09-04 17:51:03,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 275. [2020-09-04 17:51:03,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-09-04 17:51:03,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 275 transitions. [2020-09-04 17:51:03,190 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 275 transitions. Word has length 263 [2020-09-04 17:51:03,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:51:03,191 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 275 transitions. [2020-09-04 17:51:03,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-09-04 17:51:03,191 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 275 transitions. [2020-09-04 17:51:03,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-09-04 17:51:03,193 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:51:03,193 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:51:03,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-09-04 17:51:03,194 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:51:03,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:51:03,194 INFO L82 PathProgramCache]: Analyzing trace with hash -122838994, now seen corresponding path program 29 times [2020-09-04 17:51:03,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:51:03,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1330088375] [2020-09-04 17:51:03,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:51:03,200 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:51:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:51:05,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:51:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:51:05,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:51:05,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:51:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:51:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:51:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:51:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:51:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:51:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:51:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:51:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:51:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:51:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:51:05,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:51:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:51:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:51:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:51:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:51:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:51:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:51:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:51:05,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:51:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:51:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:51:05,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:51:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:51:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:51:05,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:51:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:05,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:51:05,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1330088375] [2020-09-04 17:51:05,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:51:05,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [] total 63 [2020-09-04 17:51:05,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318109762] [2020-09-04 17:51:05,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-09-04 17:51:05,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:51:05,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-09-04 17:51:05,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=964, Invalid=2942, Unknown=0, NotChecked=0, Total=3906 [2020-09-04 17:51:05,446 INFO L87 Difference]: Start difference. First operand 275 states and 275 transitions. Second operand 63 states. [2020-09-04 17:51:09,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:51:09,368 INFO L93 Difference]: Finished difference Result 288 states and 288 transitions. [2020-09-04 17:51:09,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2020-09-04 17:51:09,372 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 272 [2020-09-04 17:51:09,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:51:09,375 INFO L225 Difference]: With dead ends: 288 [2020-09-04 17:51:09,375 INFO L226 Difference]: Without dead ends: 286 [2020-09-04 17:51:09,376 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2637 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4506, Invalid=10256, Unknown=0, NotChecked=0, Total=14762 [2020-09-04 17:51:09,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-09-04 17:51:09,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 284. [2020-09-04 17:51:09,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 284 states. [2020-09-04 17:51:09,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 284 transitions. [2020-09-04 17:51:09,390 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 284 transitions. Word has length 272 [2020-09-04 17:51:09,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:51:09,391 INFO L479 AbstractCegarLoop]: Abstraction has 284 states and 284 transitions. [2020-09-04 17:51:09,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-09-04 17:51:09,391 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 284 transitions. [2020-09-04 17:51:09,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-09-04 17:51:09,394 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:51:09,394 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:51:09,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-09-04 17:51:09,398 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:51:09,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:51:09,398 INFO L82 PathProgramCache]: Analyzing trace with hash 144129170, now seen corresponding path program 30 times [2020-09-04 17:51:09,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:51:09,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515090561] [2020-09-04 17:51:09,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:51:09,412 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:51:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:51:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:51:11,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:51:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:51:11,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:51:11,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:51:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:51:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:51:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:51:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:51:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:51:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:51:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:51:11,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:51:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:51:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:51:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:51:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:51:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:51:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:51:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:51:11,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:51:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:51:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:51:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:51:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:51:11,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:51:11,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:51:11,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:51:11,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:51:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:51:11,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:11,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:51:11,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515090561] [2020-09-04 17:51:11,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:51:11,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [65] imperfect sequences [] total 65 [2020-09-04 17:51:11,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187569107] [2020-09-04 17:51:11,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-09-04 17:51:11,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:51:11,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-09-04 17:51:11,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1027, Invalid=3133, Unknown=0, NotChecked=0, Total=4160 [2020-09-04 17:51:11,830 INFO L87 Difference]: Start difference. First operand 284 states and 284 transitions. Second operand 65 states. [2020-09-04 17:51:16,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:51:16,254 INFO L93 Difference]: Finished difference Result 297 states and 297 transitions. [2020-09-04 17:51:16,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2020-09-04 17:51:16,262 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 281 [2020-09-04 17:51:16,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:51:16,264 INFO L225 Difference]: With dead ends: 297 [2020-09-04 17:51:16,264 INFO L226 Difference]: Without dead ends: 295 [2020-09-04 17:51:16,265 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2818 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=4811, Invalid=10939, Unknown=0, NotChecked=0, Total=15750 [2020-09-04 17:51:16,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-09-04 17:51:16,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 293. [2020-09-04 17:51:16,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-09-04 17:51:16,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 293 transitions. [2020-09-04 17:51:16,278 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 293 transitions. Word has length 281 [2020-09-04 17:51:16,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:51:16,278 INFO L479 AbstractCegarLoop]: Abstraction has 293 states and 293 transitions. [2020-09-04 17:51:16,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-09-04 17:51:16,279 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 293 transitions. [2020-09-04 17:51:16,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-09-04 17:51:16,281 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:51:16,281 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 31, 31, 31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:51:16,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-09-04 17:51:16,282 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:51:16,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:51:16,282 INFO L82 PathProgramCache]: Analyzing trace with hash -59944786, now seen corresponding path program 31 times [2020-09-04 17:51:16,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:51:16,283 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222286695] [2020-09-04 17:51:16,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:51:16,292 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:51:16,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:51:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:51:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:51:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:51:18,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:51:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:51:18,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:51:18,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:51:18,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:51:18,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:51:18,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:51:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:51:18,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:51:18,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:51:18,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:51:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:51:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:51:18,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:51:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:51:18,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:51:18,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:51:18,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:51:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:51:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:51:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:51:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:51:18,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:51:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:51:18,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:51:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:51:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:51:18,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:51:18,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:18,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:51:18,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222286695] [2020-09-04 17:51:18,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:51:18,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [] total 67 [2020-09-04 17:51:18,952 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335159046] [2020-09-04 17:51:18,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-09-04 17:51:18,953 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:51:18,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-09-04 17:51:18,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1092, Invalid=3330, Unknown=0, NotChecked=0, Total=4422 [2020-09-04 17:51:18,954 INFO L87 Difference]: Start difference. First operand 293 states and 293 transitions. Second operand 67 states. [2020-09-04 17:51:23,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:51:23,461 INFO L93 Difference]: Finished difference Result 306 states and 306 transitions. [2020-09-04 17:51:23,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 99 states. [2020-09-04 17:51:23,462 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 290 [2020-09-04 17:51:23,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:51:23,464 INFO L225 Difference]: With dead ends: 306 [2020-09-04 17:51:23,464 INFO L226 Difference]: Without dead ends: 304 [2020-09-04 17:51:23,466 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3005 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=5126, Invalid=11644, Unknown=0, NotChecked=0, Total=16770 [2020-09-04 17:51:23,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2020-09-04 17:51:23,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 302. [2020-09-04 17:51:23,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-09-04 17:51:23,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 302 transitions. [2020-09-04 17:51:23,479 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 302 transitions. Word has length 290 [2020-09-04 17:51:23,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:51:23,480 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 302 transitions. [2020-09-04 17:51:23,480 INFO L480 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-09-04 17:51:23,480 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 302 transitions. [2020-09-04 17:51:23,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2020-09-04 17:51:23,482 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:51:23,483 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:51:23,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-09-04 17:51:23,483 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:51:23,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:51:23,483 INFO L82 PathProgramCache]: Analyzing trace with hash 1849039890, now seen corresponding path program 32 times [2020-09-04 17:51:23,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:51:23,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201580960] [2020-09-04 17:51:23,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:51:23,500 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:51:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:51:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:51:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:51:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:51:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:51:26,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:51:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:51:26,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:51:26,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:51:26,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:51:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:51:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:51:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:51:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:51:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:51:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:51:26,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:51:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:51:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:51:26,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:51:26,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:51:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:51:26,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:51:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:51:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:51:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:51:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:51:26,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:51:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:51:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:51:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:51:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:51:26,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:51:26,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:51:26,375 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201580960] [2020-09-04 17:51:26,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:51:26,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [69] imperfect sequences [] total 69 [2020-09-04 17:51:26,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018277836] [2020-09-04 17:51:26,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-09-04 17:51:26,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:51:26,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-09-04 17:51:26,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1159, Invalid=3533, Unknown=0, NotChecked=0, Total=4692 [2020-09-04 17:51:26,378 INFO L87 Difference]: Start difference. First operand 302 states and 302 transitions. Second operand 69 states. [2020-09-04 17:51:31,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:51:31,213 INFO L93 Difference]: Finished difference Result 315 states and 315 transitions. [2020-09-04 17:51:31,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2020-09-04 17:51:31,214 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 299 [2020-09-04 17:51:31,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:51:31,216 INFO L225 Difference]: With dead ends: 315 [2020-09-04 17:51:31,217 INFO L226 Difference]: Without dead ends: 313 [2020-09-04 17:51:31,218 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3198 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=5451, Invalid=12371, Unknown=0, NotChecked=0, Total=17822 [2020-09-04 17:51:31,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2020-09-04 17:51:31,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 311. [2020-09-04 17:51:31,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-09-04 17:51:31,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 311 transitions. [2020-09-04 17:51:31,230 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 311 transitions. Word has length 299 [2020-09-04 17:51:31,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:51:31,230 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 311 transitions. [2020-09-04 17:51:31,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-09-04 17:51:31,230 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 311 transitions. [2020-09-04 17:51:31,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-09-04 17:51:31,232 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:51:31,233 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:51:31,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-09-04 17:51:31,233 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:51:31,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:51:31,235 INFO L82 PathProgramCache]: Analyzing trace with hash 651288878, now seen corresponding path program 33 times [2020-09-04 17:51:31,235 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:51:31,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436440434] [2020-09-04 17:51:31,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:51:31,239 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:51:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:51:34,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:51:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:51:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:51:34,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:51:34,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:51:34,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:51:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:51:34,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:51:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:51:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:51:34,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:51:34,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:51:34,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:51:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:51:34,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:51:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:51:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:51:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:51:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:51:34,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:51:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:51:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:51:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:51:34,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:51:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:51:34,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:51:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:51:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:51:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:51:34,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:51:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:51:34,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:51:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 17:51:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:34,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:51:34,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436440434] [2020-09-04 17:51:34,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:51:34,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [71] imperfect sequences [] total 71 [2020-09-04 17:51:34,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072800798] [2020-09-04 17:51:34,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-09-04 17:51:34,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:51:34,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-09-04 17:51:34,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1228, Invalid=3742, Unknown=0, NotChecked=0, Total=4970 [2020-09-04 17:51:34,250 INFO L87 Difference]: Start difference. First operand 311 states and 311 transitions. Second operand 71 states. [2020-09-04 17:51:39,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:51:39,738 INFO L93 Difference]: Finished difference Result 324 states and 324 transitions. [2020-09-04 17:51:39,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2020-09-04 17:51:39,739 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 308 [2020-09-04 17:51:39,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:51:39,742 INFO L225 Difference]: With dead ends: 324 [2020-09-04 17:51:39,742 INFO L226 Difference]: Without dead ends: 322 [2020-09-04 17:51:39,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3397 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=5786, Invalid=13120, Unknown=0, NotChecked=0, Total=18906 [2020-09-04 17:51:39,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-09-04 17:51:39,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 320. [2020-09-04 17:51:39,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 320 states. [2020-09-04 17:51:39,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 320 transitions. [2020-09-04 17:51:39,758 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 320 transitions. Word has length 308 [2020-09-04 17:51:39,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:51:39,758 INFO L479 AbstractCegarLoop]: Abstraction has 320 states and 320 transitions. [2020-09-04 17:51:39,758 INFO L480 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-09-04 17:51:39,759 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 320 transitions. [2020-09-04 17:51:39,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-09-04 17:51:39,761 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:51:39,761 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:51:39,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-09-04 17:51:39,762 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:51:39,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:51:39,762 INFO L82 PathProgramCache]: Analyzing trace with hash 682367890, now seen corresponding path program 34 times [2020-09-04 17:51:39,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:51:39,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513279259] [2020-09-04 17:51:39,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:51:39,776 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:51:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:51:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:51:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:51:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:51:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:51:42,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:51:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:51:42,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:51:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:51:42,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:51:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:51:42,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:51:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:51:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:51:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:51:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:51:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:51:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:51:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:51:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:51:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:51:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:51:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:51:42,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:51:42,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:51:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:51:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:51:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:51:42,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:51:42,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:51:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:51:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:51:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:51:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 17:51:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:51:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:42,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:51:42,998 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513279259] [2020-09-04 17:51:42,998 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:51:42,998 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [73] imperfect sequences [] total 73 [2020-09-04 17:51:42,998 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735939637] [2020-09-04 17:51:42,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-09-04 17:51:42,999 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:51:43,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-09-04 17:51:43,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1299, Invalid=3957, Unknown=0, NotChecked=0, Total=5256 [2020-09-04 17:51:43,000 INFO L87 Difference]: Start difference. First operand 320 states and 320 transitions. Second operand 73 states. [2020-09-04 17:51:48,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:51:48,672 INFO L93 Difference]: Finished difference Result 333 states and 333 transitions. [2020-09-04 17:51:48,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2020-09-04 17:51:48,673 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 317 [2020-09-04 17:51:48,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:51:48,676 INFO L225 Difference]: With dead ends: 333 [2020-09-04 17:51:48,677 INFO L226 Difference]: Without dead ends: 331 [2020-09-04 17:51:48,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3602 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=6131, Invalid=13891, Unknown=0, NotChecked=0, Total=20022 [2020-09-04 17:51:48,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-09-04 17:51:48,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 329. [2020-09-04 17:51:48,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-09-04 17:51:48,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 329 transitions. [2020-09-04 17:51:48,691 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 329 transitions. Word has length 317 [2020-09-04 17:51:48,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:51:48,692 INFO L479 AbstractCegarLoop]: Abstraction has 329 states and 329 transitions. [2020-09-04 17:51:48,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-09-04 17:51:48,692 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 329 transitions. [2020-09-04 17:51:48,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-09-04 17:51:48,694 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:51:48,694 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:51:48,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-09-04 17:51:48,695 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:51:48,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:51:48,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1402777170, now seen corresponding path program 35 times [2020-09-04 17:51:48,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:51:48,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384500564] [2020-09-04 17:51:48,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:51:48,700 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:51:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:51:52,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:51:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:51:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:51:52,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:51:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:51:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:51:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:51:52,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:51:52,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:51:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:51:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:51:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:51:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:51:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:51:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:51:52,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:51:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:51:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:51:52,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:51:52,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:51:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:51:52,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:51:52,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:51:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:51:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:51:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:51:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:51:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:51:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:51:52,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:51:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:51:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:51:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 17:51:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:51:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 17:51:52,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:51:52,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:51:52,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384500564] [2020-09-04 17:51:52,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:51:52,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [75] imperfect sequences [] total 75 [2020-09-04 17:51:52,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911696819] [2020-09-04 17:51:52,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-09-04 17:51:52,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:51:52,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-09-04 17:51:52,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1372, Invalid=4178, Unknown=0, NotChecked=0, Total=5550 [2020-09-04 17:51:52,264 INFO L87 Difference]: Start difference. First operand 329 states and 329 transitions. Second operand 75 states. [2020-09-04 17:51:58,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:51:58,469 INFO L93 Difference]: Finished difference Result 342 states and 342 transitions. [2020-09-04 17:51:58,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2020-09-04 17:51:58,470 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 326 [2020-09-04 17:51:58,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:51:58,473 INFO L225 Difference]: With dead ends: 342 [2020-09-04 17:51:58,473 INFO L226 Difference]: Without dead ends: 340 [2020-09-04 17:51:58,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3813 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=6486, Invalid=14684, Unknown=0, NotChecked=0, Total=21170 [2020-09-04 17:51:58,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2020-09-04 17:51:58,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 338. [2020-09-04 17:51:58,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-09-04 17:51:58,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 338 transitions. [2020-09-04 17:51:58,488 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 338 transitions. Word has length 326 [2020-09-04 17:51:58,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:51:58,489 INFO L479 AbstractCegarLoop]: Abstraction has 338 states and 338 transitions. [2020-09-04 17:51:58,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-09-04 17:51:58,489 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 338 transitions. [2020-09-04 17:51:58,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-09-04 17:51:58,492 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:51:58,492 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:51:58,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-09-04 17:51:58,492 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:51:58,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:51:58,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1670300910, now seen corresponding path program 36 times [2020-09-04 17:51:58,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:51:58,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558156920] [2020-09-04 17:51:58,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:51:58,502 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:51:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:52:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:52:02,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:52:02,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:52:02,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:52:02,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:52:02,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:52:02,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:52:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:52:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:52:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:52:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:52:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:52:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:52:02,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:52:02,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:52:02,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:52:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:52:02,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:52:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:52:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:52:02,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:52:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:52:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:52:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:52:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:52:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:52:02,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:52:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:52:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:52:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:52:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:52:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:52:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 17:52:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:52:02,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 17:52:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:52:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:02,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:52:02,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558156920] [2020-09-04 17:52:02,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:52:02,317 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [] total 77 [2020-09-04 17:52:02,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12907353] [2020-09-04 17:52:02,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-09-04 17:52:02,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:52:02,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-09-04 17:52:02,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1447, Invalid=4405, Unknown=0, NotChecked=0, Total=5852 [2020-09-04 17:52:02,319 INFO L87 Difference]: Start difference. First operand 338 states and 338 transitions. Second operand 77 states. [2020-09-04 17:52:08,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:52:08,714 INFO L93 Difference]: Finished difference Result 351 states and 351 transitions. [2020-09-04 17:52:08,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 114 states. [2020-09-04 17:52:08,715 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 335 [2020-09-04 17:52:08,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:52:08,717 INFO L225 Difference]: With dead ends: 351 [2020-09-04 17:52:08,717 INFO L226 Difference]: Without dead ends: 349 [2020-09-04 17:52:08,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4030 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=6851, Invalid=15499, Unknown=0, NotChecked=0, Total=22350 [2020-09-04 17:52:08,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-09-04 17:52:08,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 347. [2020-09-04 17:52:08,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 347 states. [2020-09-04 17:52:08,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 347 transitions. [2020-09-04 17:52:08,732 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 347 transitions. Word has length 335 [2020-09-04 17:52:08,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:52:08,733 INFO L479 AbstractCegarLoop]: Abstraction has 347 states and 347 transitions. [2020-09-04 17:52:08,733 INFO L480 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-09-04 17:52:08,733 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 347 transitions. [2020-09-04 17:52:08,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2020-09-04 17:52:08,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:52:08,736 INFO L422 BasicCegarLoop]: trace histogram [38, 38, 38, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:52:08,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-09-04 17:52:08,737 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:52:08,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:52:08,737 INFO L82 PathProgramCache]: Analyzing trace with hash -1347837394, now seen corresponding path program 37 times [2020-09-04 17:52:08,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:52:08,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118605918] [2020-09-04 17:52:08,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:52:08,749 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:52:08,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:52:12,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:52:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:52:12,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:52:12,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:52:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:52:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:52:12,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:52:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:52:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:52:12,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:52:12,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:52:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:52:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:52:12,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:52:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:52:12,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:52:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:52:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:52:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:52:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:52:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:52:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:52:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:52:12,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:52:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:52:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:52:12,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:52:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:52:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:52:12,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:52:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:52:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:52:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 17:52:12,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:52:12,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 17:52:12,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:52:12,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 17:52:12,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:12,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:52:12,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118605918] [2020-09-04 17:52:12,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:52:12,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [79] imperfect sequences [] total 79 [2020-09-04 17:52:12,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893030320] [2020-09-04 17:52:12,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-09-04 17:52:12,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:52:12,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-09-04 17:52:12,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1524, Invalid=4638, Unknown=0, NotChecked=0, Total=6162 [2020-09-04 17:52:12,902 INFO L87 Difference]: Start difference. First operand 347 states and 347 transitions. Second operand 79 states. [2020-09-04 17:52:19,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:52:19,491 INFO L93 Difference]: Finished difference Result 360 states and 360 transitions. [2020-09-04 17:52:19,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2020-09-04 17:52:19,493 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 344 [2020-09-04 17:52:19,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:52:19,495 INFO L225 Difference]: With dead ends: 360 [2020-09-04 17:52:19,495 INFO L226 Difference]: Without dead ends: 358 [2020-09-04 17:52:19,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4253 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=7226, Invalid=16336, Unknown=0, NotChecked=0, Total=23562 [2020-09-04 17:52:19,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2020-09-04 17:52:19,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 356. [2020-09-04 17:52:19,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2020-09-04 17:52:19,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 356 transitions. [2020-09-04 17:52:19,509 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 356 transitions. Word has length 344 [2020-09-04 17:52:19,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:52:19,510 INFO L479 AbstractCegarLoop]: Abstraction has 356 states and 356 transitions. [2020-09-04 17:52:19,510 INFO L480 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-09-04 17:52:19,510 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 356 transitions. [2020-09-04 17:52:19,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-09-04 17:52:19,512 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:52:19,513 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 39, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:52:19,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-09-04 17:52:19,513 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:52:19,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:52:19,514 INFO L82 PathProgramCache]: Analyzing trace with hash -165230, now seen corresponding path program 38 times [2020-09-04 17:52:19,514 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:52:19,514 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2038013808] [2020-09-04 17:52:19,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:52:19,524 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:52:19,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:52:23,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:52:23,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:52:23,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:52:23,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:52:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:52:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:52:23,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:52:23,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:52:23,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:52:23,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:52:23,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:52:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:52:23,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:52:23,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:52:23,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:52:23,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:52:23,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:52:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:52:23,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:52:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:52:23,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:52:23,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:52:23,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:52:23,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:52:23,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:52:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:52:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:52:23,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:52:23,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:52:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:52:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:52:23,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:52:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 17:52:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:52:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 17:52:23,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:52:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 17:52:23,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:52:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:23,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:52:23,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2038013808] [2020-09-04 17:52:23,762 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:52:23,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [81] imperfect sequences [] total 81 [2020-09-04 17:52:23,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436434219] [2020-09-04 17:52:23,763 INFO L459 AbstractCegarLoop]: Interpolant automaton has 81 states [2020-09-04 17:52:23,763 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:52:23,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 81 interpolants. [2020-09-04 17:52:23,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1603, Invalid=4877, Unknown=0, NotChecked=0, Total=6480 [2020-09-04 17:52:23,764 INFO L87 Difference]: Start difference. First operand 356 states and 356 transitions. Second operand 81 states. [2020-09-04 17:52:30,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:52:30,839 INFO L93 Difference]: Finished difference Result 369 states and 369 transitions. [2020-09-04 17:52:30,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2020-09-04 17:52:30,840 INFO L78 Accepts]: Start accepts. Automaton has 81 states. Word has length 353 [2020-09-04 17:52:30,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:52:30,842 INFO L225 Difference]: With dead ends: 369 [2020-09-04 17:52:30,842 INFO L226 Difference]: Without dead ends: 367 [2020-09-04 17:52:30,843 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4482 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=7611, Invalid=17195, Unknown=0, NotChecked=0, Total=24806 [2020-09-04 17:52:30,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-09-04 17:52:30,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2020-09-04 17:52:30,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365 states. [2020-09-04 17:52:30,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 365 transitions. [2020-09-04 17:52:30,857 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 365 transitions. Word has length 353 [2020-09-04 17:52:30,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:52:30,858 INFO L479 AbstractCegarLoop]: Abstraction has 365 states and 365 transitions. [2020-09-04 17:52:30,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 81 states. [2020-09-04 17:52:30,858 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 365 transitions. [2020-09-04 17:52:30,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-09-04 17:52:30,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:52:30,861 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 39, 39, 39, 39, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:52:30,861 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-09-04 17:52:30,862 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:52:30,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:52:30,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1054027090, now seen corresponding path program 39 times [2020-09-04 17:52:30,862 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:52:30,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664649415] [2020-09-04 17:52:30,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:52:30,871 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:52:30,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:52:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:52:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:52:35,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:52:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:52:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:52:35,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:52:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:52:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:52:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:52:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:52:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:52:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:52:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:52:35,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:52:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:52:35,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:52:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:52:35,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:52:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:52:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:52:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:52:35,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:52:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:52:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:52:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:52:35,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:52:35,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:52:35,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:52:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:52:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:52:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:52:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:52:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 17:52:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:52:35,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 17:52:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:52:35,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 17:52:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:52:35,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 17:52:35,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:35,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:52:35,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664649415] [2020-09-04 17:52:35,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:52:35,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [83] imperfect sequences [] total 83 [2020-09-04 17:52:35,510 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811328797] [2020-09-04 17:52:35,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 83 states [2020-09-04 17:52:35,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:52:35,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2020-09-04 17:52:35,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1684, Invalid=5122, Unknown=0, NotChecked=0, Total=6806 [2020-09-04 17:52:35,512 INFO L87 Difference]: Start difference. First operand 365 states and 365 transitions. Second operand 83 states. [2020-09-04 17:52:43,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:52:43,657 INFO L93 Difference]: Finished difference Result 378 states and 378 transitions. [2020-09-04 17:52:43,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 123 states. [2020-09-04 17:52:43,658 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 362 [2020-09-04 17:52:43,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:52:43,661 INFO L225 Difference]: With dead ends: 378 [2020-09-04 17:52:43,661 INFO L226 Difference]: Without dead ends: 376 [2020-09-04 17:52:43,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4717 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=8006, Invalid=18076, Unknown=0, NotChecked=0, Total=26082 [2020-09-04 17:52:43,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-09-04 17:52:43,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 374. [2020-09-04 17:52:43,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 374 states. [2020-09-04 17:52:43,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 374 transitions. [2020-09-04 17:52:43,677 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 374 transitions. Word has length 362 [2020-09-04 17:52:43,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:52:43,678 INFO L479 AbstractCegarLoop]: Abstraction has 374 states and 374 transitions. [2020-09-04 17:52:43,678 INFO L480 AbstractCegarLoop]: Interpolant automaton has 83 states. [2020-09-04 17:52:43,678 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 374 transitions. [2020-09-04 17:52:43,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 372 [2020-09-04 17:52:43,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:52:43,681 INFO L422 BasicCegarLoop]: trace histogram [41, 41, 41, 40, 40, 40, 40, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:52:43,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-09-04 17:52:43,682 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:52:43,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:52:43,682 INFO L82 PathProgramCache]: Analyzing trace with hash -607593966, now seen corresponding path program 40 times [2020-09-04 17:52:43,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:52:43,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833315064] [2020-09-04 17:52:43,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:52:43,694 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:52:43,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:52:48,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:52:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:52:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:52:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:52:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:52:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:52:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:52:48,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:52:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:52:48,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:52:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:52:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:52:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:52:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:52:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:52:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:52:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:52:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:52:48,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:52:48,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:52:48,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:52:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:52:48,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:52:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:52:48,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:52:48,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:52:48,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:52:48,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:52:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:52:48,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:52:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:52:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:52:48,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 17:52:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:52:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 17:52:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:52:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 17:52:48,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:52:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 17:52:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 17:52:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:52:48,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:52:48,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833315064] [2020-09-04 17:52:48,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:52:48,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [85] imperfect sequences [] total 85 [2020-09-04 17:52:48,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949537149] [2020-09-04 17:52:48,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 85 states [2020-09-04 17:52:48,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:52:48,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2020-09-04 17:52:48,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1767, Invalid=5373, Unknown=0, NotChecked=0, Total=7140 [2020-09-04 17:52:48,899 INFO L87 Difference]: Start difference. First operand 374 states and 374 transitions. Second operand 85 states. [2020-09-04 17:52:58,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:52:58,008 INFO L93 Difference]: Finished difference Result 387 states and 387 transitions. [2020-09-04 17:52:58,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2020-09-04 17:52:58,009 INFO L78 Accepts]: Start accepts. Automaton has 85 states. Word has length 371 [2020-09-04 17:52:58,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:52:58,012 INFO L225 Difference]: With dead ends: 387 [2020-09-04 17:52:58,012 INFO L226 Difference]: Without dead ends: 385 [2020-09-04 17:52:58,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4958 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=8411, Invalid=18979, Unknown=0, NotChecked=0, Total=27390 [2020-09-04 17:52:58,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2020-09-04 17:52:58,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 383. [2020-09-04 17:52:58,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 383 states. [2020-09-04 17:52:58,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 383 transitions. [2020-09-04 17:52:58,028 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 383 transitions. Word has length 371 [2020-09-04 17:52:58,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:52:58,029 INFO L479 AbstractCegarLoop]: Abstraction has 383 states and 383 transitions. [2020-09-04 17:52:58,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 85 states. [2020-09-04 17:52:58,029 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 383 transitions. [2020-09-04 17:52:58,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2020-09-04 17:52:58,032 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:52:58,033 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 42, 41, 41, 41, 41, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:52:58,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-09-04 17:52:58,033 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:52:58,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:52:58,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1601495854, now seen corresponding path program 41 times [2020-09-04 17:52:58,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:52:58,034 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010519570] [2020-09-04 17:52:58,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:52:58,043 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:52:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:53:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:53:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:53:03,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:53:03,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:53:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:53:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:53:03,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:53:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:53:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:53:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:53:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:53:03,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:53:03,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:53:03,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:53:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:53:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:53:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:53:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:53:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:53:03,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:53:03,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:53:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:53:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:53:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:53:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:53:03,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:53:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:53:03,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:53:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:53:03,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:53:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:53:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:53:03,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 17:53:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:53:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 17:53:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:53:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 17:53:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:53:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 17:53:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 17:53:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 17:53:03,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:03,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:53:03,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010519570] [2020-09-04 17:53:03,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:53:03,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [87] imperfect sequences [] total 87 [2020-09-04 17:53:03,919 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094424690] [2020-09-04 17:53:03,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 87 states [2020-09-04 17:53:03,920 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:53:03,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 87 interpolants. [2020-09-04 17:53:03,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1852, Invalid=5630, Unknown=0, NotChecked=0, Total=7482 [2020-09-04 17:53:03,921 INFO L87 Difference]: Start difference. First operand 383 states and 383 transitions. Second operand 87 states. [2020-09-04 17:53:12,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:53:12,879 INFO L93 Difference]: Finished difference Result 396 states and 396 transitions. [2020-09-04 17:53:12,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2020-09-04 17:53:12,881 INFO L78 Accepts]: Start accepts. Automaton has 87 states. Word has length 380 [2020-09-04 17:53:12,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:53:12,884 INFO L225 Difference]: With dead ends: 396 [2020-09-04 17:53:12,884 INFO L226 Difference]: Without dead ends: 394 [2020-09-04 17:53:12,886 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 168 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5205 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=8826, Invalid=19904, Unknown=0, NotChecked=0, Total=28730 [2020-09-04 17:53:12,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2020-09-04 17:53:12,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 392. [2020-09-04 17:53:12,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-09-04 17:53:12,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 392 transitions. [2020-09-04 17:53:12,901 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 392 transitions. Word has length 380 [2020-09-04 17:53:12,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:53:12,902 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 392 transitions. [2020-09-04 17:53:12,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 87 states. [2020-09-04 17:53:12,902 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 392 transitions. [2020-09-04 17:53:12,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-09-04 17:53:12,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:53:12,906 INFO L422 BasicCegarLoop]: trace histogram [43, 43, 43, 42, 42, 42, 42, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:53:12,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-09-04 17:53:12,906 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:53:12,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:53:12,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1974773358, now seen corresponding path program 42 times [2020-09-04 17:53:12,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:53:12,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1017342466] [2020-09-04 17:53:12,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:53:12,919 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:53:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:53:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:53:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:53:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:53:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:53:18,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:53:18,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:53:18,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:53:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:53:18,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:53:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:53:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:53:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:53:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:53:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:53:18,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:53:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:53:18,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:53:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:53:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:53:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:53:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:53:18,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:53:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:53:18,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:53:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:53:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:53:18,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:53:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:53:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:53:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:53:18,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:53:18,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:53:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 17:53:18,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:53:18,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 17:53:18,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:53:18,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 17:53:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:53:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 17:53:18,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 17:53:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:18,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 17:53:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:19,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 17:53:19,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:19,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:53:19,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1017342466] [2020-09-04 17:53:19,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:53:19,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [89] imperfect sequences [] total 89 [2020-09-04 17:53:19,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464634134] [2020-09-04 17:53:19,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 89 states [2020-09-04 17:53:19,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:53:19,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 89 interpolants. [2020-09-04 17:53:19,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1939, Invalid=5893, Unknown=0, NotChecked=0, Total=7832 [2020-09-04 17:53:19,074 INFO L87 Difference]: Start difference. First operand 392 states and 392 transitions. Second operand 89 states. [2020-09-04 17:53:29,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:53:29,586 INFO L93 Difference]: Finished difference Result 405 states and 405 transitions. [2020-09-04 17:53:29,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2020-09-04 17:53:29,587 INFO L78 Accepts]: Start accepts. Automaton has 89 states. Word has length 389 [2020-09-04 17:53:29,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:53:29,590 INFO L225 Difference]: With dead ends: 405 [2020-09-04 17:53:29,590 INFO L226 Difference]: Without dead ends: 403 [2020-09-04 17:53:29,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5458 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=9251, Invalid=20851, Unknown=0, NotChecked=0, Total=30102 [2020-09-04 17:53:29,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-09-04 17:53:29,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 401. [2020-09-04 17:53:29,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 401 states. [2020-09-04 17:53:29,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 401 transitions. [2020-09-04 17:53:29,606 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 401 transitions. Word has length 389 [2020-09-04 17:53:29,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:53:29,607 INFO L479 AbstractCegarLoop]: Abstraction has 401 states and 401 transitions. [2020-09-04 17:53:29,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 89 states. [2020-09-04 17:53:29,608 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 401 transitions. [2020-09-04 17:53:29,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-09-04 17:53:29,612 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:53:29,612 INFO L422 BasicCegarLoop]: trace histogram [44, 44, 44, 43, 43, 43, 43, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:53:29,612 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-09-04 17:53:29,612 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:53:29,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:53:29,613 INFO L82 PathProgramCache]: Analyzing trace with hash 1997132718, now seen corresponding path program 43 times [2020-09-04 17:53:29,613 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:53:29,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669537815] [2020-09-04 17:53:29,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:53:29,620 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:53:29,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:53:36,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:53:36,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:53:36,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:53:36,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:53:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:53:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:53:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:53:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:53:36,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:53:36,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:53:36,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:53:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:53:36,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:53:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:53:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:53:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:53:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:53:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:53:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:53:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:53:36,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:53:36,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:53:36,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:53:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:53:36,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:53:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:53:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:53:36,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:53:36,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:53:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:53:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:53:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:53:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 17:53:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:53:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 17:53:36,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:53:36,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 17:53:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:53:36,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 17:53:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 17:53:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 17:53:36,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 17:53:36,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 17:53:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:36,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:53:36,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669537815] [2020-09-04 17:53:36,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:53:36,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [91] imperfect sequences [] total 91 [2020-09-04 17:53:36,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643589220] [2020-09-04 17:53:36,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-09-04 17:53:36,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:53:36,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-09-04 17:53:36,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2028, Invalid=6162, Unknown=0, NotChecked=0, Total=8190 [2020-09-04 17:53:36,608 INFO L87 Difference]: Start difference. First operand 401 states and 401 transitions. Second operand 91 states. [2020-09-04 17:53:48,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:53:48,254 INFO L93 Difference]: Finished difference Result 414 states and 414 transitions. [2020-09-04 17:53:48,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 135 states. [2020-09-04 17:53:48,256 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 398 [2020-09-04 17:53:48,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:53:48,259 INFO L225 Difference]: With dead ends: 414 [2020-09-04 17:53:48,260 INFO L226 Difference]: Without dead ends: 412 [2020-09-04 17:53:48,261 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5717 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=9686, Invalid=21820, Unknown=0, NotChecked=0, Total=31506 [2020-09-04 17:53:48,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2020-09-04 17:53:48,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 410. [2020-09-04 17:53:48,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 410 states. [2020-09-04 17:53:48,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 410 transitions. [2020-09-04 17:53:48,275 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 410 transitions. Word has length 398 [2020-09-04 17:53:48,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:53:48,275 INFO L479 AbstractCegarLoop]: Abstraction has 410 states and 410 transitions. [2020-09-04 17:53:48,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-09-04 17:53:48,276 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 410 transitions. [2020-09-04 17:53:48,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408 [2020-09-04 17:53:48,279 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:53:48,279 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 45, 44, 44, 44, 44, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:53:48,279 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-09-04 17:53:48,280 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:53:48,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:53:48,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1208157934, now seen corresponding path program 44 times [2020-09-04 17:53:48,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:53:48,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538139488] [2020-09-04 17:53:48,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:53:48,286 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:53:48,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:53:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:53:55,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:53:55,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:53:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:53:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:53:55,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:53:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:53:55,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:53:55,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:53:55,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:53:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:53:55,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:53:55,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:53:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:53:55,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:53:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:53:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:53:55,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:53:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:53:55,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:53:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:53:55,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:53:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:53:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:53:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:53:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:53:55,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:53:55,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:53:55,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:53:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:53:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:53:55,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:53:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 17:53:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:53:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 17:53:55,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:53:55,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 17:53:55,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:53:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 17:53:55,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 17:53:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 17:53:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 17:53:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 17:53:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 17:53:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:53:55,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:53:55,423 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538139488] [2020-09-04 17:53:55,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:53:55,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [93] imperfect sequences [] total 93 [2020-09-04 17:53:55,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38985549] [2020-09-04 17:53:55,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 93 states [2020-09-04 17:53:55,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:53:55,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 93 interpolants. [2020-09-04 17:53:55,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2119, Invalid=6437, Unknown=0, NotChecked=0, Total=8556 [2020-09-04 17:53:55,425 INFO L87 Difference]: Start difference. First operand 410 states and 410 transitions. Second operand 93 states. [2020-09-04 17:54:06,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:54:06,571 INFO L93 Difference]: Finished difference Result 423 states and 423 transitions. [2020-09-04 17:54:06,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 138 states. [2020-09-04 17:54:06,572 INFO L78 Accepts]: Start accepts. Automaton has 93 states. Word has length 407 [2020-09-04 17:54:06,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:54:06,576 INFO L225 Difference]: With dead ends: 423 [2020-09-04 17:54:06,576 INFO L226 Difference]: Without dead ends: 421 [2020-09-04 17:54:06,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5982 ImplicationChecksByTransitivity, 16.2s TimeCoverageRelationStatistics Valid=10131, Invalid=22811, Unknown=0, NotChecked=0, Total=32942 [2020-09-04 17:54:06,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-09-04 17:54:06,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 419. [2020-09-04 17:54:06,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 419 states. [2020-09-04 17:54:06,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 419 states to 419 states and 419 transitions. [2020-09-04 17:54:06,591 INFO L78 Accepts]: Start accepts. Automaton has 419 states and 419 transitions. Word has length 407 [2020-09-04 17:54:06,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:54:06,592 INFO L479 AbstractCegarLoop]: Abstraction has 419 states and 419 transitions. [2020-09-04 17:54:06,592 INFO L480 AbstractCegarLoop]: Interpolant automaton has 93 states. [2020-09-04 17:54:06,592 INFO L276 IsEmpty]: Start isEmpty. Operand 419 states and 419 transitions. [2020-09-04 17:54:06,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 417 [2020-09-04 17:54:06,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:54:06,596 INFO L422 BasicCegarLoop]: trace histogram [46, 46, 46, 45, 45, 45, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:54:06,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-09-04 17:54:06,596 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:54:06,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:54:06,597 INFO L82 PathProgramCache]: Analyzing trace with hash -495737810, now seen corresponding path program 45 times [2020-09-04 17:54:06,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:54:06,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680709366] [2020-09-04 17:54:06,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:54:06,608 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:54:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:54:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:54:14,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:54:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:54:14,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:54:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:54:14,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:54:14,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:54:14,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:54:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:54:14,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:54:14,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:54:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:54:14,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:54:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:54:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:54:14,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:54:14,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:54:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:54:14,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:54:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:54:14,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:54:14,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:54:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:54:14,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:54:14,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:54:14,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:54:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:54:14,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:54:14,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:54:14,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:54:14,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:54:14,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:54:14,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 17:54:14,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:54:14,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 17:54:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:54:14,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 17:54:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:54:14,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 17:54:14,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 17:54:14,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 17:54:14,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 17:54:14,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 17:54:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 17:54:14,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 17:54:14,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:14,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:54:14,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680709366] [2020-09-04 17:54:14,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:54:14,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [95] imperfect sequences [] total 95 [2020-09-04 17:54:14,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915331182] [2020-09-04 17:54:14,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 95 states [2020-09-04 17:54:14,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:54:14,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 95 interpolants. [2020-09-04 17:54:14,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2212, Invalid=6718, Unknown=0, NotChecked=0, Total=8930 [2020-09-04 17:54:14,223 INFO L87 Difference]: Start difference. First operand 419 states and 419 transitions. Second operand 95 states. [2020-09-04 17:54:28,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:54:28,317 INFO L93 Difference]: Finished difference Result 432 states and 432 transitions. [2020-09-04 17:54:28,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2020-09-04 17:54:28,319 INFO L78 Accepts]: Start accepts. Automaton has 95 states. Word has length 416 [2020-09-04 17:54:28,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:54:28,322 INFO L225 Difference]: With dead ends: 432 [2020-09-04 17:54:28,322 INFO L226 Difference]: Without dead ends: 430 [2020-09-04 17:54:28,324 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6253 ImplicationChecksByTransitivity, 18.5s TimeCoverageRelationStatistics Valid=10586, Invalid=23824, Unknown=0, NotChecked=0, Total=34410 [2020-09-04 17:54:28,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-09-04 17:54:28,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 428. [2020-09-04 17:54:28,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428 states. [2020-09-04 17:54:28,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 428 transitions. [2020-09-04 17:54:28,337 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 428 transitions. Word has length 416 [2020-09-04 17:54:28,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:54:28,338 INFO L479 AbstractCegarLoop]: Abstraction has 428 states and 428 transitions. [2020-09-04 17:54:28,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 95 states. [2020-09-04 17:54:28,339 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 428 transitions. [2020-09-04 17:54:28,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-09-04 17:54:28,342 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:54:28,342 INFO L422 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:54:28,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-09-04 17:54:28,343 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:54:28,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:54:28,343 INFO L82 PathProgramCache]: Analyzing trace with hash -480921454, now seen corresponding path program 46 times [2020-09-04 17:54:28,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:54:28,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1612489424] [2020-09-04 17:54:28,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:54:28,355 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:54:28,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:54:36,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:54:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:54:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:54:36,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:54:36,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:54:36,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:54:36,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:54:36,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:54:36,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:54:36,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:54:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:54:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:54:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:54:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:54:36,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:54:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:54:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:54:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:54:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:54:36,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:54:36,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:54:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:54:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:54:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:54:36,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:54:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:54:36,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:54:36,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:54:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:54:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:54:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:54:36,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:54:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 17:54:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:54:36,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 17:54:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:54:36,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 17:54:36,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:54:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 17:54:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 17:54:36,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 17:54:36,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 17:54:36,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 17:54:36,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 17:54:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 17:54:36,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 17:54:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:54:36,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:54:36,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1612489424] [2020-09-04 17:54:36,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:54:36,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2020-09-04 17:54:36,884 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827629283] [2020-09-04 17:54:36,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 97 states [2020-09-04 17:54:36,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:54:36,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2020-09-04 17:54:36,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2307, Invalid=7005, Unknown=0, NotChecked=0, Total=9312 [2020-09-04 17:54:36,885 INFO L87 Difference]: Start difference. First operand 428 states and 428 transitions. Second operand 97 states. [2020-09-04 17:54:53,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:54:53,071 INFO L93 Difference]: Finished difference Result 441 states and 441 transitions. [2020-09-04 17:54:53,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 144 states. [2020-09-04 17:54:53,073 INFO L78 Accepts]: Start accepts. Automaton has 97 states. Word has length 425 [2020-09-04 17:54:53,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:54:53,077 INFO L225 Difference]: With dead ends: 441 [2020-09-04 17:54:53,078 INFO L226 Difference]: Without dead ends: 439 [2020-09-04 17:54:53,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 188 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6530 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=11051, Invalid=24859, Unknown=0, NotChecked=0, Total=35910 [2020-09-04 17:54:53,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-09-04 17:54:53,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 437. [2020-09-04 17:54:53,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-09-04 17:54:53,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 437 transitions. [2020-09-04 17:54:53,098 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 437 transitions. Word has length 425 [2020-09-04 17:54:53,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:54:53,099 INFO L479 AbstractCegarLoop]: Abstraction has 437 states and 437 transitions. [2020-09-04 17:54:53,099 INFO L480 AbstractCegarLoop]: Interpolant automaton has 97 states. [2020-09-04 17:54:53,099 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 437 transitions. [2020-09-04 17:54:53,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-09-04 17:54:53,103 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:54:53,104 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 48, 47, 47, 47, 47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:54:53,104 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-09-04 17:54:53,104 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:54:53,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:54:53,105 INFO L82 PathProgramCache]: Analyzing trace with hash -365275986, now seen corresponding path program 47 times [2020-09-04 17:54:53,105 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:54:53,105 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1073381746] [2020-09-04 17:54:53,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:54:53,114 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:54:53,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:55:02,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:55:02,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:55:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:55:02,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:55:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:55:02,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:55:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:55:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:55:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:55:02,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:55:02,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:55:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:55:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:55:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:55:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:55:02,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:55:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:55:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:55:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:55:02,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:55:02,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:55:02,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:55:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:55:02,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:55:02,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:55:02,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:55:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:55:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:55:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:55:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:55:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:55:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:55:02,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 17:55:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:55:02,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 17:55:02,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:55:02,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 17:55:02,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:55:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 17:55:02,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 17:55:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 17:55:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 17:55:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 17:55:02,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 17:55:02,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 17:55:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 17:55:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:02,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-09-04 17:55:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:03,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:55:03,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1073381746] [2020-09-04 17:55:03,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:55:03,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [99] imperfect sequences [] total 99 [2020-09-04 17:55:03,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691270248] [2020-09-04 17:55:03,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 99 states [2020-09-04 17:55:03,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:55:03,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 99 interpolants. [2020-09-04 17:55:03,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2404, Invalid=7298, Unknown=0, NotChecked=0, Total=9702 [2020-09-04 17:55:03,012 INFO L87 Difference]: Start difference. First operand 437 states and 437 transitions. Second operand 99 states. [2020-09-04 17:55:20,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:55:20,624 INFO L93 Difference]: Finished difference Result 450 states and 450 transitions. [2020-09-04 17:55:20,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2020-09-04 17:55:20,627 INFO L78 Accepts]: Start accepts. Automaton has 99 states. Word has length 434 [2020-09-04 17:55:20,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:55:20,631 INFO L225 Difference]: With dead ends: 450 [2020-09-04 17:55:20,631 INFO L226 Difference]: Without dead ends: 448 [2020-09-04 17:55:20,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6813 ImplicationChecksByTransitivity, 22.6s TimeCoverageRelationStatistics Valid=11526, Invalid=25916, Unknown=0, NotChecked=0, Total=37442 [2020-09-04 17:55:20,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-09-04 17:55:20,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 446. [2020-09-04 17:55:20,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2020-09-04 17:55:20,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 446 transitions. [2020-09-04 17:55:20,665 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 446 transitions. Word has length 434 [2020-09-04 17:55:20,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:55:20,666 INFO L479 AbstractCegarLoop]: Abstraction has 446 states and 446 transitions. [2020-09-04 17:55:20,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 99 states. [2020-09-04 17:55:20,667 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 446 transitions. [2020-09-04 17:55:20,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 444 [2020-09-04 17:55:20,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:55:20,674 INFO L422 BasicCegarLoop]: trace histogram [49, 49, 49, 48, 48, 48, 48, 48, 48, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:55:20,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-09-04 17:55:20,675 INFO L427 AbstractCegarLoop]: === Iteration 49 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:55:20,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:55:20,675 INFO L82 PathProgramCache]: Analyzing trace with hash -590505966, now seen corresponding path program 48 times [2020-09-04 17:55:20,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:55:20,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [661356332] [2020-09-04 17:55:20,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:55:20,687 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:55:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:55:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:55:32,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:55:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:55:32,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:55:32,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:55:32,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:55:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:55:32,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:55:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:55:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:55:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:55:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:55:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:55:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:55:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:55:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:55:32,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:55:32,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:55:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:55:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:55:32,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:55:32,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:55:32,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:55:32,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:55:32,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:55:32,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:55:32,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:55:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:55:32,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:55:32,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:55:32,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:55:32,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:55:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 17:55:32,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:55:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 17:55:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:55:32,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 17:55:32,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:55:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 17:55:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 17:55:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 17:55:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 17:55:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 17:55:32,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 17:55:32,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 17:55:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 17:55:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-09-04 17:55:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 17:55:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:55:32,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:55:32,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [661356332] [2020-09-04 17:55:32,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:55:32,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [101] imperfect sequences [] total 101 [2020-09-04 17:55:32,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189259840] [2020-09-04 17:55:32,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 101 states [2020-09-04 17:55:32,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:55:32,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2020-09-04 17:55:32,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2503, Invalid=7597, Unknown=0, NotChecked=0, Total=10100 [2020-09-04 17:55:32,988 INFO L87 Difference]: Start difference. First operand 446 states and 446 transitions. Second operand 101 states. [2020-09-04 17:55:53,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:55:53,144 INFO L93 Difference]: Finished difference Result 459 states and 459 transitions. [2020-09-04 17:55:53,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2020-09-04 17:55:53,147 INFO L78 Accepts]: Start accepts. Automaton has 101 states. Word has length 443 [2020-09-04 17:55:53,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:55:53,150 INFO L225 Difference]: With dead ends: 459 [2020-09-04 17:55:53,150 INFO L226 Difference]: Without dead ends: 457 [2020-09-04 17:55:53,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7102 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=12011, Invalid=26995, Unknown=0, NotChecked=0, Total=39006 [2020-09-04 17:55:53,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-09-04 17:55:53,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 455. [2020-09-04 17:55:53,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 455 states. [2020-09-04 17:55:53,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 455 transitions. [2020-09-04 17:55:53,163 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 455 transitions. Word has length 443 [2020-09-04 17:55:53,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:55:53,163 INFO L479 AbstractCegarLoop]: Abstraction has 455 states and 455 transitions. [2020-09-04 17:55:53,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 101 states. [2020-09-04 17:55:53,163 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 455 transitions. [2020-09-04 17:55:53,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2020-09-04 17:55:53,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:55:53,166 INFO L422 BasicCegarLoop]: trace histogram [50, 50, 50, 49, 49, 49, 49, 49, 49, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:55:53,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-09-04 17:55:53,166 INFO L427 AbstractCegarLoop]: === Iteration 50 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:55:53,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:55:53,166 INFO L82 PathProgramCache]: Analyzing trace with hash -991566546, now seen corresponding path program 49 times [2020-09-04 17:55:53,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:55:53,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537191985] [2020-09-04 17:55:53,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:55:53,175 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:55:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:56:05,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:56:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:56:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:56:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:56:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:56:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:56:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:56:05,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:56:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:56:05,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:56:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:56:05,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:56:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:56:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:56:05,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:56:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:56:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:56:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:56:05,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:56:05,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:56:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:56:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:56:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:56:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:56:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:56:05,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:56:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:56:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:56:05,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:56:05,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:56:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:56:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:56:05,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 17:56:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:56:05,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 17:56:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:56:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 17:56:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:56:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 17:56:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 17:56:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 17:56:05,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 17:56:05,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 17:56:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 17:56:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 17:56:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 17:56:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-09-04 17:56:05,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 17:56:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-09-04 17:56:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:05,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:56:05,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1537191985] [2020-09-04 17:56:05,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:56:05,944 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [103] imperfect sequences [] total 103 [2020-09-04 17:56:05,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294985438] [2020-09-04 17:56:05,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 103 states [2020-09-04 17:56:05,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:56:05,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2020-09-04 17:56:05,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2604, Invalid=7902, Unknown=0, NotChecked=0, Total=10506 [2020-09-04 17:56:05,946 INFO L87 Difference]: Start difference. First operand 455 states and 455 transitions. Second operand 103 states. [2020-09-04 17:56:25,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:56:25,731 INFO L93 Difference]: Finished difference Result 468 states and 468 transitions. [2020-09-04 17:56:25,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2020-09-04 17:56:25,733 INFO L78 Accepts]: Start accepts. Automaton has 103 states. Word has length 452 [2020-09-04 17:56:25,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:56:25,736 INFO L225 Difference]: With dead ends: 468 [2020-09-04 17:56:25,736 INFO L226 Difference]: Without dead ends: 466 [2020-09-04 17:56:25,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 200 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7397 ImplicationChecksByTransitivity, 27.4s TimeCoverageRelationStatistics Valid=12506, Invalid=28096, Unknown=0, NotChecked=0, Total=40602 [2020-09-04 17:56:25,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 466 states. [2020-09-04 17:56:25,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 466 to 464. [2020-09-04 17:56:25,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 464 states. [2020-09-04 17:56:25,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 464 states to 464 states and 464 transitions. [2020-09-04 17:56:25,749 INFO L78 Accepts]: Start accepts. Automaton has 464 states and 464 transitions. Word has length 452 [2020-09-04 17:56:25,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:56:25,750 INFO L479 AbstractCegarLoop]: Abstraction has 464 states and 464 transitions. [2020-09-04 17:56:25,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 103 states. [2020-09-04 17:56:25,750 INFO L276 IsEmpty]: Start isEmpty. Operand 464 states and 464 transitions. [2020-09-04 17:56:25,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-09-04 17:56:25,753 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:56:25,754 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 51, 50, 50, 50, 50, 50, 50, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:56:25,754 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-09-04 17:56:25,754 INFO L427 AbstractCegarLoop]: === Iteration 51 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:56:25,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:56:25,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1188861842, now seen corresponding path program 50 times [2020-09-04 17:56:25,755 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:56:25,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548609985] [2020-09-04 17:56:25,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:56:25,764 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:56:26,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:56:37,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:56:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:56:37,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:56:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:56:37,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:56:37,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:56:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:56:37,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:56:37,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:56:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:56:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:56:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:56:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:56:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:56:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:56:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:56:37,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:56:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:56:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:56:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:56:37,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:56:37,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:56:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:56:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:56:37,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:56:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:56:37,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:56:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:56:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:56:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:56:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:56:37,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:56:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 17:56:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:56:37,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 17:56:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:56:37,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 17:56:37,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:56:37,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 17:56:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 17:56:37,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 17:56:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 17:56:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 17:56:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 17:56:37,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 17:56:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 17:56:37,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-09-04 17:56:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 17:56:37,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-09-04 17:56:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 17:56:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:56:37,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:56:37,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548609985] [2020-09-04 17:56:37,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:56:37,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [105] imperfect sequences [] total 105 [2020-09-04 17:56:37,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201676735] [2020-09-04 17:56:37,983 INFO L459 AbstractCegarLoop]: Interpolant automaton has 105 states [2020-09-04 17:56:37,984 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:56:37,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 105 interpolants. [2020-09-04 17:56:37,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2707, Invalid=8213, Unknown=0, NotChecked=0, Total=10920 [2020-09-04 17:56:37,984 INFO L87 Difference]: Start difference. First operand 464 states and 464 transitions. Second operand 105 states. [2020-09-04 17:56:58,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:56:58,737 INFO L93 Difference]: Finished difference Result 477 states and 477 transitions. [2020-09-04 17:56:58,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2020-09-04 17:56:58,739 INFO L78 Accepts]: Start accepts. Automaton has 105 states. Word has length 461 [2020-09-04 17:56:58,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:56:58,743 INFO L225 Difference]: With dead ends: 477 [2020-09-04 17:56:58,744 INFO L226 Difference]: Without dead ends: 475 [2020-09-04 17:56:58,745 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 204 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7698 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=13011, Invalid=29219, Unknown=0, NotChecked=0, Total=42230 [2020-09-04 17:56:58,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2020-09-04 17:56:58,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 473. [2020-09-04 17:56:58,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-09-04 17:56:58,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 473 transitions. [2020-09-04 17:56:58,758 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 473 transitions. Word has length 461 [2020-09-04 17:56:58,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:56:58,759 INFO L479 AbstractCegarLoop]: Abstraction has 473 states and 473 transitions. [2020-09-04 17:56:58,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 105 states. [2020-09-04 17:56:58,759 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 473 transitions. [2020-09-04 17:56:58,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-09-04 17:56:58,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:56:58,764 INFO L422 BasicCegarLoop]: trace histogram [52, 52, 52, 51, 51, 51, 51, 51, 51, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:56:58,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-09-04 17:56:58,764 INFO L427 AbstractCegarLoop]: === Iteration 52 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:56:58,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:56:58,765 INFO L82 PathProgramCache]: Analyzing trace with hash 385766830, now seen corresponding path program 51 times [2020-09-04 17:56:58,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:56:58,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569095540] [2020-09-04 17:56:58,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:56:58,777 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:56:58,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:57:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:57:11,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:57:11,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:57:11,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:57:11,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:57:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:57:11,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:57:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:57:11,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:57:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:57:11,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:57:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:57:11,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:57:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:57:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:57:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:57:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:57:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:57:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:57:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:57:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:57:11,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:57:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:57:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:57:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:57:11,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:57:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:57:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:57:11,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:57:11,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:57:11,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:57:11,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:57:11,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 17:57:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:57:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 17:57:11,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:57:11,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 17:57:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:57:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 17:57:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 17:57:11,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 17:57:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 17:57:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 17:57:11,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 17:57:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 17:57:11,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 17:57:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-09-04 17:57:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 17:57:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-09-04 17:57:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 17:57:11,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-09-04 17:57:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:57:11,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569095540] [2020-09-04 17:57:11,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:57:11,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [107] imperfect sequences [] total 107 [2020-09-04 17:57:11,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640299413] [2020-09-04 17:57:11,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 107 states [2020-09-04 17:57:11,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:57:11,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 107 interpolants. [2020-09-04 17:57:11,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2812, Invalid=8530, Unknown=0, NotChecked=0, Total=11342 [2020-09-04 17:57:11,476 INFO L87 Difference]: Start difference. First operand 473 states and 473 transitions. Second operand 107 states. [2020-09-04 17:57:31,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:57:31,982 INFO L93 Difference]: Finished difference Result 486 states and 486 transitions. [2020-09-04 17:57:31,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2020-09-04 17:57:31,987 INFO L78 Accepts]: Start accepts. Automaton has 107 states. Word has length 470 [2020-09-04 17:57:31,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:57:31,989 INFO L225 Difference]: With dead ends: 486 [2020-09-04 17:57:31,990 INFO L226 Difference]: Without dead ends: 484 [2020-09-04 17:57:31,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 208 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8005 ImplicationChecksByTransitivity, 29.1s TimeCoverageRelationStatistics Valid=13526, Invalid=30364, Unknown=0, NotChecked=0, Total=43890 [2020-09-04 17:57:31,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-09-04 17:57:32,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 482. [2020-09-04 17:57:32,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482 states. [2020-09-04 17:57:32,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 482 transitions. [2020-09-04 17:57:32,004 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 482 transitions. Word has length 470 [2020-09-04 17:57:32,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:57:32,005 INFO L479 AbstractCegarLoop]: Abstraction has 482 states and 482 transitions. [2020-09-04 17:57:32,005 INFO L480 AbstractCegarLoop]: Interpolant automaton has 107 states. [2020-09-04 17:57:32,005 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 482 transitions. [2020-09-04 17:57:32,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2020-09-04 17:57:32,008 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:57:32,009 INFO L422 BasicCegarLoop]: trace histogram [53, 53, 53, 52, 52, 52, 52, 52, 52, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:57:32,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-09-04 17:57:32,009 INFO L427 AbstractCegarLoop]: === Iteration 53 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:57:32,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:57:32,010 INFO L82 PathProgramCache]: Analyzing trace with hash 368752402, now seen corresponding path program 52 times [2020-09-04 17:57:32,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:57:32,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176624103] [2020-09-04 17:57:32,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:57:32,017 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:57:32,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:57:45,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:57:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:57:45,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:57:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:57:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:57:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:57:45,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:57:45,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:57:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:57:45,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:57:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:57:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:57:45,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:57:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:57:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:57:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:57:45,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:57:45,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:57:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:57:45,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:57:45,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:57:45,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:57:45,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:57:45,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:57:45,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:57:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:57:45,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:57:45,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:57:45,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:57:45,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:57:45,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:57:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:57:45,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 17:57:45,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:57:45,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 17:57:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:57:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 17:57:45,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:57:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 17:57:45,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 17:57:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 17:57:45,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 17:57:45,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 17:57:45,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 17:57:45,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 17:57:45,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 17:57:45,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-09-04 17:57:45,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 17:57:45,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-09-04 17:57:45,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 17:57:45,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-09-04 17:57:45,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-09-04 17:57:45,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:57:45,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:57:45,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176624103] [2020-09-04 17:57:45,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:57:45,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [109] imperfect sequences [] total 109 [2020-09-04 17:57:45,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19455103] [2020-09-04 17:57:45,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 109 states [2020-09-04 17:57:45,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:57:45,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 109 interpolants. [2020-09-04 17:57:45,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2919, Invalid=8853, Unknown=0, NotChecked=0, Total=11772 [2020-09-04 17:57:45,423 INFO L87 Difference]: Start difference. First operand 482 states and 482 transitions. Second operand 109 states. [2020-09-04 17:58:10,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:58:10,822 INFO L93 Difference]: Finished difference Result 495 states and 495 transitions. [2020-09-04 17:58:10,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 162 states. [2020-09-04 17:58:10,824 INFO L78 Accepts]: Start accepts. Automaton has 109 states. Word has length 479 [2020-09-04 17:58:10,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:58:10,827 INFO L225 Difference]: With dead ends: 495 [2020-09-04 17:58:10,827 INFO L226 Difference]: Without dead ends: 493 [2020-09-04 17:58:10,829 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8318 ImplicationChecksByTransitivity, 31.6s TimeCoverageRelationStatistics Valid=14051, Invalid=31531, Unknown=0, NotChecked=0, Total=45582 [2020-09-04 17:58:10,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-09-04 17:58:10,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 491. [2020-09-04 17:58:10,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 491 states. [2020-09-04 17:58:10,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 491 transitions. [2020-09-04 17:58:10,842 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 491 transitions. Word has length 479 [2020-09-04 17:58:10,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:58:10,842 INFO L479 AbstractCegarLoop]: Abstraction has 491 states and 491 transitions. [2020-09-04 17:58:10,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 109 states. [2020-09-04 17:58:10,842 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 491 transitions. [2020-09-04 17:58:10,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2020-09-04 17:58:10,845 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:58:10,845 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 54, 53, 53, 53, 53, 53, 53, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:58:10,846 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-09-04 17:58:10,846 INFO L427 AbstractCegarLoop]: === Iteration 54 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:58:10,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:58:10,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1930143278, now seen corresponding path program 53 times [2020-09-04 17:58:10,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:58:10,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1082710722] [2020-09-04 17:58:10,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:58:10,854 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:58:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:58:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:58:24,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:58:24,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:58:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:58:24,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:58:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:58:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:58:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:58:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:58:24,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:58:24,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:58:24,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:58:24,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:58:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:58:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:58:24,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:58:24,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:58:24,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:58:24,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:58:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:58:24,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:58:24,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:58:24,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:58:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:58:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:58:24,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:58:24,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:58:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:58:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:58:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:58:24,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:58:24,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:58:24,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 17:58:24,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:58:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 17:58:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:58:24,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 17:58:24,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:58:24,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 17:58:24,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 17:58:24,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 17:58:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 17:58:24,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 17:58:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 17:58:24,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 17:58:24,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 17:58:24,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-09-04 17:58:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 17:58:24,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-09-04 17:58:24,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 17:58:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-09-04 17:58:24,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-09-04 17:58:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:24,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-09-04 17:58:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:25,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:58:25,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1082710722] [2020-09-04 17:58:25,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:58:25,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [111] imperfect sequences [] total 111 [2020-09-04 17:58:25,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024138951] [2020-09-04 17:58:25,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 111 states [2020-09-04 17:58:25,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:58:25,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 111 interpolants. [2020-09-04 17:58:25,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3028, Invalid=9182, Unknown=0, NotChecked=0, Total=12210 [2020-09-04 17:58:25,017 INFO L87 Difference]: Start difference. First operand 491 states and 491 transitions. Second operand 111 states. [2020-09-04 17:58:51,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:58:51,814 INFO L93 Difference]: Finished difference Result 504 states and 504 transitions. [2020-09-04 17:58:51,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 165 states. [2020-09-04 17:58:51,817 INFO L78 Accepts]: Start accepts. Automaton has 111 states. Word has length 488 [2020-09-04 17:58:51,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:58:51,821 INFO L225 Difference]: With dead ends: 504 [2020-09-04 17:58:51,822 INFO L226 Difference]: Without dead ends: 502 [2020-09-04 17:58:51,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 216 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8637 ImplicationChecksByTransitivity, 34.5s TimeCoverageRelationStatistics Valid=14586, Invalid=32720, Unknown=0, NotChecked=0, Total=47306 [2020-09-04 17:58:51,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-09-04 17:58:51,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 500. [2020-09-04 17:58:51,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 500 states. [2020-09-04 17:58:51,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 500 states to 500 states and 500 transitions. [2020-09-04 17:58:51,834 INFO L78 Accepts]: Start accepts. Automaton has 500 states and 500 transitions. Word has length 488 [2020-09-04 17:58:51,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:58:51,835 INFO L479 AbstractCegarLoop]: Abstraction has 500 states and 500 transitions. [2020-09-04 17:58:51,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 111 states. [2020-09-04 17:58:51,835 INFO L276 IsEmpty]: Start isEmpty. Operand 500 states and 500 transitions. [2020-09-04 17:58:51,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2020-09-04 17:58:51,838 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:58:51,838 INFO L422 BasicCegarLoop]: trace histogram [55, 55, 55, 54, 54, 54, 54, 54, 54, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:58:51,838 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-09-04 17:58:51,838 INFO L427 AbstractCegarLoop]: === Iteration 55 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:58:51,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:58:51,838 INFO L82 PathProgramCache]: Analyzing trace with hash 278918802, now seen corresponding path program 54 times [2020-09-04 17:58:51,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:58:51,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006205094] [2020-09-04 17:58:51,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:58:51,851 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:58:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:59:05,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:59:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:59:05,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:59:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:59:05,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:59:05,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:59:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:59:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:59:05,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:59:05,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:59:05,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:59:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:59:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:59:05,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:59:05,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:59:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:59:05,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:59:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:59:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:59:05,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:59:05,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:59:05,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:59:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:59:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:59:05,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:59:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:59:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:59:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:59:05,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:59:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:59:05,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 17:59:05,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:59:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 17:59:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:59:05,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 17:59:05,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:59:05,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 17:59:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 17:59:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 17:59:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 17:59:05,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 17:59:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 17:59:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 17:59:05,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 17:59:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-09-04 17:59:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 17:59:05,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-09-04 17:59:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 17:59:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-09-04 17:59:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-09-04 17:59:05,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-09-04 17:59:05,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:05,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-09-04 17:59:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:06,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:59:06,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006205094] [2020-09-04 17:59:06,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:06,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [113] imperfect sequences [] total 113 [2020-09-04 17:59:06,104 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657944620] [2020-09-04 17:59:06,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 113 states [2020-09-04 17:59:06,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:06,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 113 interpolants. [2020-09-04 17:59:06,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3139, Invalid=9517, Unknown=0, NotChecked=0, Total=12656 [2020-09-04 17:59:06,106 INFO L87 Difference]: Start difference. First operand 500 states and 500 transitions. Second operand 113 states. [2020-09-04 17:59:35,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:35,390 INFO L93 Difference]: Finished difference Result 513 states and 513 transitions. [2020-09-04 17:59:35,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 168 states. [2020-09-04 17:59:35,394 INFO L78 Accepts]: Start accepts. Automaton has 113 states. Word has length 497 [2020-09-04 17:59:35,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:35,397 INFO L225 Difference]: With dead ends: 513 [2020-09-04 17:59:35,397 INFO L226 Difference]: Without dead ends: 511 [2020-09-04 17:59:35,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 220 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8962 ImplicationChecksByTransitivity, 36.8s TimeCoverageRelationStatistics Valid=15131, Invalid=33931, Unknown=0, NotChecked=0, Total=49062 [2020-09-04 17:59:35,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-09-04 17:59:35,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 509. [2020-09-04 17:59:35,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 509 states. [2020-09-04 17:59:35,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 509 states to 509 states and 509 transitions. [2020-09-04 17:59:35,411 INFO L78 Accepts]: Start accepts. Automaton has 509 states and 509 transitions. Word has length 497 [2020-09-04 17:59:35,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:35,411 INFO L479 AbstractCegarLoop]: Abstraction has 509 states and 509 transitions. [2020-09-04 17:59:35,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 113 states. [2020-09-04 17:59:35,411 INFO L276 IsEmpty]: Start isEmpty. Operand 509 states and 509 transitions. [2020-09-04 17:59:35,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2020-09-04 17:59:35,414 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:35,414 INFO L422 BasicCegarLoop]: trace histogram [56, 56, 56, 55, 55, 55, 55, 55, 55, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:59:35,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-09-04 17:59:35,414 INFO L427 AbstractCegarLoop]: === Iteration 56 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:35,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:35,415 INFO L82 PathProgramCache]: Analyzing trace with hash -644491602, now seen corresponding path program 55 times [2020-09-04 17:59:35,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:35,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1059631819] [2020-09-04 17:59:35,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:35,422 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 17:59:52,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:59:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 17:59:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 17:59:52,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 17:59:52,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 17:59:52,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 17:59:52,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 17:59:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 17:59:52,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 17:59:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 17:59:52,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 17:59:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 17:59:52,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 17:59:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 17:59:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 17:59:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 17:59:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 17:59:52,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 17:59:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 17:59:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 17:59:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 17:59:52,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 17:59:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 17:59:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 17:59:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 17:59:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 17:59:52,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 17:59:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:59:52,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:59:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 17:59:52,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 17:59:52,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 17:59:52,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 17:59:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 17:59:52,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 17:59:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 17:59:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 17:59:52,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 17:59:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 17:59:52,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 17:59:52,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 17:59:52,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 17:59:52,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 17:59:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 17:59:52,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-09-04 17:59:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 17:59:52,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-09-04 17:59:52,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 17:59:52,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-09-04 17:59:52,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-09-04 17:59:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-09-04 17:59:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-09-04 17:59:52,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-09-04 17:59:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:59:52,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1059631819] [2020-09-04 17:59:52,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:52,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [115] imperfect sequences [] total 115 [2020-09-04 17:59:52,975 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626212022] [2020-09-04 17:59:52,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 115 states [2020-09-04 17:59:52,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:52,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 115 interpolants. [2020-09-04 17:59:52,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3252, Invalid=9858, Unknown=0, NotChecked=0, Total=13110 [2020-09-04 17:59:52,976 INFO L87 Difference]: Start difference. First operand 509 states and 509 transitions. Second operand 115 states. [2020-09-04 18:00:22,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:00:22,933 INFO L93 Difference]: Finished difference Result 522 states and 522 transitions. [2020-09-04 18:00:22,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 171 states. [2020-09-04 18:00:22,937 INFO L78 Accepts]: Start accepts. Automaton has 115 states. Word has length 506 [2020-09-04 18:00:22,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:00:22,940 INFO L225 Difference]: With dead ends: 522 [2020-09-04 18:00:22,941 INFO L226 Difference]: Without dead ends: 520 [2020-09-04 18:00:22,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9293 ImplicationChecksByTransitivity, 40.2s TimeCoverageRelationStatistics Valid=15686, Invalid=35164, Unknown=0, NotChecked=0, Total=50850 [2020-09-04 18:00:22,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2020-09-04 18:00:22,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 518. [2020-09-04 18:00:22,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 518 states. [2020-09-04 18:00:22,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 518 transitions. [2020-09-04 18:00:22,960 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 518 transitions. Word has length 506 [2020-09-04 18:00:22,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:00:22,961 INFO L479 AbstractCegarLoop]: Abstraction has 518 states and 518 transitions. [2020-09-04 18:00:22,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 115 states. [2020-09-04 18:00:22,961 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 518 transitions. [2020-09-04 18:00:22,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 516 [2020-09-04 18:00:22,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:00:22,966 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 57, 56, 56, 56, 56, 56, 56, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:00:22,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-09-04 18:00:22,966 INFO L427 AbstractCegarLoop]: === Iteration 57 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:00:22,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:00:22,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1329878546, now seen corresponding path program 56 times [2020-09-04 18:00:22,967 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:00:22,967 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124515807] [2020-09-04 18:00:22,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:00:22,977 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:00:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:41,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 18:00:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 18:00:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 18:00:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 18:00:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 18:00:41,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 18:00:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 18:00:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 18:00:41,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 18:00:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 18:00:41,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 18:00:41,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 18:00:41,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 18:00:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 18:00:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 18:00:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 18:00:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 18:00:41,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 18:00:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 18:00:41,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 18:00:41,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 18:00:41,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 18:00:41,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 18:00:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 18:00:41,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 18:00:41,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 18:00:41,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 18:00:41,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 18:00:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 18:00:41,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 18:00:41,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 18:00:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 18:00:41,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 18:00:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 18:00:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 18:00:41,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 18:00:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 18:00:41,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 18:00:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 18:00:41,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 18:00:41,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 18:00:41,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 18:00:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 18:00:41,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 18:00:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 18:00:41,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-09-04 18:00:41,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 18:00:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-09-04 18:00:41,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 18:00:41,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-09-04 18:00:41,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-09-04 18:00:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-09-04 18:00:41,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-09-04 18:00:41,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-09-04 18:00:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-09-04 18:00:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:41,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 18:00:41,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124515807] [2020-09-04 18:00:41,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:00:41,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [117] imperfect sequences [] total 117 [2020-09-04 18:00:41,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281262246] [2020-09-04 18:00:41,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 117 states [2020-09-04 18:00:41,614 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:00:41,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 117 interpolants. [2020-09-04 18:00:41,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3367, Invalid=10205, Unknown=0, NotChecked=0, Total=13572 [2020-09-04 18:00:41,615 INFO L87 Difference]: Start difference. First operand 518 states and 518 transitions. Second operand 117 states. [2020-09-04 18:01:10,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:01:10,320 INFO L93 Difference]: Finished difference Result 531 states and 531 transitions. [2020-09-04 18:01:10,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2020-09-04 18:01:10,324 INFO L78 Accepts]: Start accepts. Automaton has 117 states. Word has length 515 [2020-09-04 18:01:10,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:01:10,327 INFO L225 Difference]: With dead ends: 531 [2020-09-04 18:01:10,327 INFO L226 Difference]: Without dead ends: 529 [2020-09-04 18:01:10,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9630 ImplicationChecksByTransitivity, 42.6s TimeCoverageRelationStatistics Valid=16251, Invalid=36419, Unknown=0, NotChecked=0, Total=52670 [2020-09-04 18:01:10,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-09-04 18:01:10,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 527. [2020-09-04 18:01:10,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 527 states. [2020-09-04 18:01:10,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 527 transitions. [2020-09-04 18:01:10,343 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 527 transitions. Word has length 515 [2020-09-04 18:01:10,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:01:10,343 INFO L479 AbstractCegarLoop]: Abstraction has 527 states and 527 transitions. [2020-09-04 18:01:10,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 117 states. [2020-09-04 18:01:10,343 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 527 transitions. [2020-09-04 18:01:10,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 525 [2020-09-04 18:01:10,346 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:01:10,347 INFO L422 BasicCegarLoop]: trace histogram [58, 58, 58, 57, 57, 57, 57, 57, 57, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:01:10,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-09-04 18:01:10,347 INFO L427 AbstractCegarLoop]: === Iteration 58 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:01:10,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:01:10,347 INFO L82 PathProgramCache]: Analyzing trace with hash 958719790, now seen corresponding path program 57 times [2020-09-04 18:01:10,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:01:10,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [848112126] [2020-09-04 18:01:10,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:01:10,353 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:01:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:01:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 18:01:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 18:01:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:01:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 18:01:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 18:01:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 18:01:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 18:01:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 18:01:30,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 18:01:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 18:01:30,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 18:01:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 18:01:30,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 18:01:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 18:01:30,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 18:01:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 18:01:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 18:01:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 18:01:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 18:01:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 18:01:30,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 18:01:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 18:01:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 18:01:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 18:01:30,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 18:01:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 18:01:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 18:01:30,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 18:01:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 18:01:30,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 18:01:30,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 18:01:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 18:01:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 18:01:30,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 18:01:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 18:01:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 18:01:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 18:01:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 18:01:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 18:01:30,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 18:01:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 18:01:30,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 18:01:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 18:01:30,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 18:01:30,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 18:01:30,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 18:01:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-09-04 18:01:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 18:01:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-09-04 18:01:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 18:01:30,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-09-04 18:01:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-09-04 18:01:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-09-04 18:01:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-09-04 18:01:30,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-09-04 18:01:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-09-04 18:01:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2020-09-04 18:01:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:30,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 18:01:30,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [848112126] [2020-09-04 18:01:30,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:01:30,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [119] imperfect sequences [] total 119 [2020-09-04 18:01:30,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027892857] [2020-09-04 18:01:30,410 INFO L459 AbstractCegarLoop]: Interpolant automaton has 119 states [2020-09-04 18:01:30,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:01:30,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 119 interpolants. [2020-09-04 18:01:30,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3484, Invalid=10558, Unknown=0, NotChecked=0, Total=14042 [2020-09-04 18:01:30,411 INFO L87 Difference]: Start difference. First operand 527 states and 527 transitions. Second operand 119 states. [2020-09-04 18:01:57,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:01:57,305 INFO L93 Difference]: Finished difference Result 540 states and 540 transitions. [2020-09-04 18:01:57,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2020-09-04 18:01:57,307 INFO L78 Accepts]: Start accepts. Automaton has 119 states. Word has length 524 [2020-09-04 18:01:57,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:01:57,311 INFO L225 Difference]: With dead ends: 540 [2020-09-04 18:01:57,311 INFO L226 Difference]: Without dead ends: 538 [2020-09-04 18:01:57,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9973 ImplicationChecksByTransitivity, 40.6s TimeCoverageRelationStatistics Valid=16826, Invalid=37696, Unknown=0, NotChecked=0, Total=54522 [2020-09-04 18:01:57,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2020-09-04 18:01:57,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 536. [2020-09-04 18:01:57,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 536 states. [2020-09-04 18:01:57,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 536 transitions. [2020-09-04 18:01:57,327 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 536 transitions. Word has length 524 [2020-09-04 18:01:57,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:01:57,327 INFO L479 AbstractCegarLoop]: Abstraction has 536 states and 536 transitions. [2020-09-04 18:01:57,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 119 states. [2020-09-04 18:01:57,328 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 536 transitions. [2020-09-04 18:01:57,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2020-09-04 18:01:57,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:01:57,331 INFO L422 BasicCegarLoop]: trace histogram [59, 59, 59, 58, 58, 58, 58, 58, 58, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:01:57,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-09-04 18:01:57,331 INFO L427 AbstractCegarLoop]: === Iteration 59 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:01:57,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:01:57,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1134570094, now seen corresponding path program 58 times [2020-09-04 18:01:57,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:01:57,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138434882] [2020-09-04 18:01:57,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:01:57,341 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:01:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:02:12,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-04 18:02:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 18:02:12,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:02:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 18:02:12,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-04 18:02:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-09-04 18:02:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-09-04 18:02:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-09-04 18:02:12,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 18:02:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-09-04 18:02:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-04 18:02:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-09-04 18:02:12,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-04 18:02:12,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-09-04 18:02:12,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-09-04 18:02:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-09-04 18:02:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-09-04 18:02:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-09-04 18:02:12,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-09-04 18:02:12,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-09-04 18:02:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2020-09-04 18:02:12,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 18:02:12,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2020-09-04 18:02:12,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2020-09-04 18:02:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 18:02:12,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 18:02:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 18:02:12,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 18:02:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 18:02:12,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 18:02:12,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 18:02:12,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 286 [2020-09-04 18:02:12,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-09-04 18:02:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-09-04 18:02:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2020-09-04 18:02:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2020-09-04 18:02:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2020-09-04 18:02:12,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-09-04 18:02:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-09-04 18:02:12,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 358 [2020-09-04 18:02:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 367 [2020-09-04 18:02:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-09-04 18:02:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 385 [2020-09-04 18:02:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2020-09-04 18:02:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-09-04 18:02:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-09-04 18:02:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-09-04 18:02:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 430 [2020-09-04 18:02:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 439 [2020-09-04 18:02:12,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 448 [2020-09-04 18:02:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 457 [2020-09-04 18:02:12,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 466 [2020-09-04 18:02:12,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-09-04 18:02:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-09-04 18:02:12,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 493 [2020-09-04 18:02:12,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 502 [2020-09-04 18:02:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 511 [2020-09-04 18:02:12,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 520 [2020-09-04 18:02:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:02:12,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 18:02:12,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138434882] [2020-09-04 18:02:12,319 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:02:12,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [121] imperfect sequences [] total 121 [2020-09-04 18:02:12,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144853462] [2020-09-04 18:02:12,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 121 states [2020-09-04 18:02:12,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:02:12,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 121 interpolants. [2020-09-04 18:02:12,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3603, Invalid=10917, Unknown=0, NotChecked=0, Total=14520 [2020-09-04 18:02:12,320 INFO L87 Difference]: Start difference. First operand 536 states and 536 transitions. Second operand 121 states.